JP2013201836A - Trial charge result determination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trial charge result determination device for enabling a person on duty to easily determine a trial charge result when a power transmission line failure occurs.SOLUTION: A trial charge result determination unit 52 checks whether or not information satisfying a criterion in each procedure of trial charge determination procedures exists in A and B substation breaker "on"/"off" information Iand I, A and B substation failure class information Iand I, and A and B substation device operation information Iand Istored in a memory 55 in time series order; and determines a trial charge result is which of "trial charge success", "final break by failure duration", "final break by a new failure", and "final break by A substation breaker non-operation" on the basis of existence of the information satisfying the criterion in each procedure.

Description

  The present invention relates to a trial charge result discriminating apparatus, and more particularly, to a trial charge result discriminating apparatus suitable for quickly eliminating a supply trouble at the time of a power transmission line accident.

Conventionally, in an electric power company, for example, when an accident (ground fault or short-circuit accident) occurs in the transmission line laid between the A substation and the B substation shown in FIG. 5, each of the A substation and the B substation The installed protective relays 14 and 24 detect the occurrence of an accident based on the fault currents from the current transformers (CT) 11 and 21 installed on the A substation side and the B substation side of the transmission line, respectively. Thus, the cause circuit is disconnected by blocking the circuit breakers (CB) 12 and 22 respectively installed on the A substation side and the B substation side of the transmission line.
The automatic restoration device (ARE) 15 installed in the A substation outputs a circuit breaker “ON” command signal to the circuit breaker 12 after a few seconds when the circuit breaker “OFF” signal is input from the circuit breaker 12. Then, after carrying out the trial charging of the power transmission line, it becomes a ready state for 3 minutes (this is a preparation time for the next accident, and even if a new accident occurs during this preparation time, the automatic recovery device 15 is shut off. Since the device “ON” command signal is not output, final shut-off (FT) is performed by the automatic recovery device.)

  When the trial charging by the automatic recovery device 15 at the A substation is successful, the transmission line “charge” information is output from the charging determination device 23 installed at the B substation to the automatic recovery device 25 installed at the B substation. When the power line “charge” information is input from the charge determination device 23, the automatic recovery device 25 outputs a circuit breaker “ON” command signal to the circuit breaker 22 after a few seconds have elapsed, and after turning on the circuit breaker 22, Get ready for 3 minutes.

In addition, the A substation circuit breaker 12, the charging determination device 13, the protective relay 14 and the automatic recovery device 15 are connected to the A substation circuit breaker “ON” / “OFF” information I _Aa and the A substation blackout / charge information I _Ab. , A substation accident type (ground fault or short circuit) information I _Ac and A substation device operation information I _Ad (see FIG. 1) is a remote monitoring control device (TC) 16 (hereinafter referred to as “telecon 16”). To the information collection and distribution device (DX) 30 installed at the control relay station.
Similarly, the circuit breaker 22, the charge determination device 23, the protective relay 24, and the automatic recovery device 25 installed in the B substation are connected to the B substation circuit breaker “ON” / “OFF” information I _Ba , B substation blackout / Charging information I _Bb , B substation accident type information I _Bc, and B substation device operation information I _Bd (see FIG. 1) are collected and distributed via a remote monitoring control device 26 (hereinafter referred to as “telecon 26”). Each is transmitted to the device 30.

The information collection / distribution device 30 includes the A substation circuit breaker “ON” / “OFF” information I _Aa , A substation blackout / charge information I _Ab , A substation accident type information I _Ac and A transmitted from the telecon 16. Substation device operation information I _Ad and B substation circuit breaker “ON” / “OFF” information I _Ba , B substation blackout / charge information I _Bb , B substation accident type information I _Bc and The B substation device operation information I _Bd is transmitted to the control station system 40 installed in the control station.

When receiving the information from the information collection and distribution device 30, the reception / processing device 41 of the control center system 40 stores the received information in the database (DB) 43 and displays the information on the display device 42 in chronological order.
At this time, the same information is transmitted to the control station system 40 from other substations (for example, the C substation, the D substation, and the E substation) via the information collection / distribution device 30, so 6 stores information on the C substation, the D substation, and the E substation, and the display device 42 includes, for example, information on the A substation and the B substation as shown in FIG. The information of E substation is also displayed in order of time series.

  Therefore, the duty of the control station looks for the information of the A substation and the B substation from the information displayed on the display device 42 together with the information of the C substation, the D substation, and the E substation. As shown in FIGS. 7 (a) to 7 (d), only the information of the A substation and the B substation is arranged in the head in time series order, and the result of trial charging on the transmission line between the A substation and the B substation (trial Whether the charging succeeds, the final interruption due to the continuing accident, the final interruption due to the occurrence of a new accident, or the final interruption due to the operation of the A substation breaker) is confirmed.

  In addition, in the following patent document 1, the present applicant represents in more detail display colors and patterns of a power transmission line, a busbar, a switch, and the like on a screen representing a system state, and prohibits an erroneous operation of a charging / discharging operation. In order to provide a display function, means for inputting on / off states of power system switches, grounding locations, accident facilities, etc., system state determining means for determining system state based on power system information, and system state determination Display processing means for outputting a system diagram and system status to the display device based on the determination result by the means, the display processing means displays the system line so that the power system can be identified, and is connected to one of the power systems. A system line that is in a charged state is displayed as a first charge pattern indicating charging, and a system line that is not connected to any power system but is being charged is a second charging pattern that indicates a single power source. Na It proposes a power system monitoring and control system which is adapted to show aggregate system condition to the system line.

JP 2009-153270 A

  However, as described above, since information on a large number of substations is displayed in time series on the display device 42 of the control station system 40, the shift staff can display information on the A substation and the B substation from among them. There was a problem that it took time to sort.

In addition, in the case of unsuccessful trial charging due to continued accidents, as shown in Fig. 7 (b), it will eventually become "9:12:23 A substation transmission line ARE final shut-off (FT)", but automatic recovery Even if a new accident occurs while the devices 15 and 25 are not ready, as shown in Fig. 9 (c), "9:13:01 A substation transmission line ARE final shut-off (FT)" and " 9:13:01 B substation transmission line ARE final shut-off (FT) "and automatic recovery devices 15 and 25 are activated, but the test charging is not performed due to the malfunction of the A substation breaker 12 In addition, it becomes "9:13:01 A substation transmission line ARE final interruption (FT)".
Therefore, if the information on the A and B substations arranged in the head is as shown in (b) in the figure, the duty shifter will indicate that “the final interruption has occurred” → “Continue accident or new accident. → “Accident occurred after trial charging at substation A” → “Unsuccessful trial charging due to accident continuation” → “Customer power outage continued, so power was transmitted from other routes If the information of substation A and substation B arranged in the head is as shown in (c) of the figure, “Final interruption occurred” → “Continue accident or new accident” → “B circuit breaker 22 at substation (mating end) is in place” → “Test charging unsuccessful due to new accident (power failure)” → “Okay, turn off A circuit breaker 12 at substation A” The information of A substation and B substation arranged in my head is shown in the figure (d). If so, “Final interruption occurred” → “Accident continuation or new accident occurred?” → “A substation circuit breaker 12 is not installed” → “A substation circuit breaker 12 not operating The trial charge is unsuccessful. ”→“ Yes, let's try manually charging the A substation circuit breaker 12 ”and the result of the trial charge at the A substation in charge is unsuccessful. As a result of being confused as to whether it was a trial charge for a new accident (final interruption due to a new accident occurrence) or a trial charge (final interruption due to circuit breaker inoperative at substation A), If the trial charge is not implemented yet, if the trial charge is performed again promptly, the trouble of supply can be solved at an early stage. there were.

  Here, in the receiving / processing device 41 of the control station system 40, only the information of the A substation and the B substation is selected from the information of a large number of substations and shown in FIGS. 8 (a) to 8 (d). In this way, the method of displaying on the display device 42 in order of time series is also conceivable. However, in such a method, the former problem (problem in which it takes time for the duty staff to select the information of the A substation and the B substation) However, there is a problem that the latter problem (problem that the duty on the duty is lost) cannot be solved.

  An object of the present invention is to provide a trial charge result discriminating apparatus capable of facilitating judgment by a shift worker of a trial charge result at the time of a power transmission line accident.

The trial charging result determination apparatus of the present invention is a trial charging performed at the first substation when an accident occurs in the transmission line laid between the first substation and the second substation. A test charging result discriminating device (10) for discriminating a result, wherein the first substation is transmitted from a first circuit breaker (12) installed on the first substation side of the transmission line. Station breaker “ON” / “OFF” information (I _Aa ), first substation accident type information (I _Ac ) transmitted from the first protective relay (14) installed in the first substation ) And the first substation device operation information (I _Ad ) transmitted from the first automatic recovery device (15) installed in the first substation and the second substation side of the transmission line The second substation circuit breaker “ON” / “OFF” information (I _Ba ) transmitted from the second circuit breaker (22) installed in ), Second substation accident type information ( _IBc ) transmitted from the second protective relay (24) installed in the second substation, and second information installed in the second substation. A second substation device operation information (I _Bd ) transmitted from the automatic recovery device (25) in the time series in order, and the first time stored in the memory in the time series order And the second substation circuit breaker “ON” / “OFF” information, the first and second substation fault type information, and the first and second substation device operation information. Check whether there is information satisfying the judgment criteria in each procedure, and depending on the presence or absence of information satisfying the judgment criteria in each procedure, the result of the trial charge is “successful trial charge”, “final interruption due to accident continuation”, “new "Final break due to accident" and "First breaker immobility" A trial charge result discriminating unit (52) for discriminating whether it is "final shut-off by" and an external display device (in accordance with an instruction from the trial charge result discriminating unit) 42), and a display control unit (53) for displaying on the screen.
Here, the trial charge determination procedure checks the presence or absence of the first information indicating the final interruption, and if there is no first information, the first step of determining “trial charge success” (S11, If there is the first information (S12), and a second step (S13) for checking whether or not there is second information indicating that the first circuit breaker has been turned on before the final circuit break. ) And the second information indicates that the second circuit breaker was turned on after the first circuit breaker was turned on before the final break. In the third step (S14) for checking the presence / absence of information, and when the third information is not present, an accident occurs in the transmission line after the first circuit breaker 12 is turned on before the final interruption. A fourth step (S15) for checking the presence or absence of the fourth information indicating that it has occurred; If there is information, a fifth step (S16) for checking whether or not there is fifth information indicating that the first automatic recovery device has been activated before the final shut-off, and the fifth step If there is information, it indicates that the first breaker was cut off after an accident occurred on the transmission line after the first breaker was turned on before the final break. The sixth step (S17, S18) for determining whether or not the sixth information is present and determining that the sixth information is present is “final interruption due to accident continuation”; If there is information 3, 7th information indicating that an accident has occurred in the transmission line after the first and second circuit breakers were turned on before the final interruption. If there is a seventh step (S19) for checking the presence and the seventh information, There was an eighth step (S20) for checking whether or not there is eighth information indicating that both the first and second automatic recovery devices were activated before the final shutdown, and the eighth information. In some cases, both the first and second circuit breakers were interrupted after an accident occurred in the transmission line after both the first and second circuit breakers were turned on before the final circuit break. A ninth step (S21, S22) for determining whether or not there is the ninth information indicating that this is the case and if the ninth information is present, the second step If the second information is not present in step 1, the presence or absence of the tenth information indicating that the first automatic recovery device has been activated is checked before the final shutdown. If the first breaker is judged as “final break due to non-operation of the first breaker” 10 steps (S23, S24) may be included.
When the display control unit displays the test charge determination result in the test charge result determination unit on the display device, information on the basis of the test charge determination result in the first to tenth information is also provided. The first to tenth steps may be arranged in order and displayed on the display device.
When the display control unit displays the test charge determination result in the test charge result determination unit on the display device, the first and second substation breakers “ON” and “ The “off” information, the first and second substation accident type information, and the first and second substation device operation information may be displayed on the display device in chronological order.
When the trial charge result discriminating unit discriminates "final interruption due to a new accident" or "final interruption due to the first circuit breaker not operating", the first circuit breaker is turned on to retry the transmission line. You may further comprise the circuit breaker insertion signal output part (54) for implementing charging.

The trial charge result discrimination device of the present invention has the following effects.
(1) First and second substation breaker “on” / “off” information, first and second substation fault type information, and first and second substations stored in memory in time series order By making the trial charge result discriminating section check whether there is information that satisfies the judgment criteria in each procedure of the trial charging discrimination procedure in the device operation information, the trial charging is performed depending on the presence or absence of information that satisfies the judgment criteria in each procedure. Let the trial charge result discriminating unit determine whether the result is “successful trial charge”, “final interruption due to accident continuation”, “final interruption due to new accident”, or “final interruption due to first circuit breaker malfunction” Therefore, it is possible to easily determine the result of the trial charging in the case of a power transmission line accident by the duty staff.
(2) It is possible to reduce the factors for judging duty on duty and to quickly resolve supply problems and to prevent human errors.
(3) As a secondary effect, customer satisfaction can be improved through stable power supply.

It is a figure which shows the structure of the trial charge result determination apparatus 50 by one Example of this invention. 3 is a flowchart for explaining the operation of a trial charge result determination unit 52 shown in FIG. It is a figure which shows an example of the display on the display apparatus 42 by the trial charge result determination apparatus 50 shown in FIG. It is a figure which shows the other example of the display on the display apparatus 42 by the trial charge result determination apparatus 50 shown in FIG. It is a figure which shows the connection state of the various apparatuses for demonstrating the conventional trial charge result determination method. It is a figure which shows an example of the display screen of the display apparatus 42 of the control center system 40 shown in FIG. It is a figure for demonstrating the problem of the conventional trial charge result discrimination method. It is a figure which shows an example which selected and displayed the information of A substation and B substation on the display apparatus 42 of the control station system 40 shown in FIG. 5 in order of time series.

  A and B substation circuit breaker “ON” and “OFF” information sent from A and B substations, A and B substation accident type information, and A substation and The B substation device operation information is made to check whether or not there is information satisfying the judgment criteria in each procedure of the trial charging judgment procedure, and the trial charging is performed depending on the presence or absence of information satisfying the judgment criteria in each procedure. Whether the result of the test is “successful trial charge”, “final shutdown due to continuing accident”, “final shutdown due to new accident”, or “final shutdown due to circuit breaker inoperative at substation A” Realized by making it discriminate.

Embodiments of a test charge result determination apparatus according to the present invention will be described below with reference to the drawings.
The trial charge result discriminating apparatus 50 according to an embodiment of the present invention is built in the control center system 40 shown in FIG. 5, and as shown in FIG. Unit 52, display control unit 53, circuit breaker closing signal output unit 54, and memory 55.

Here, according to the information collection instruction signal from the trial charge result discriminating unit 52, the information collecting unit 51 discriminates the trial charge result from the information of a large number of substations stored in the database 43 (see FIG. 5). Necessary information (for example, when determining the result of trial charging at A substation, A substation circuit breaker “ON” / “OFF” information I _Aa , A substation blackout / charge information I _Ab , A substation Accident type information I _Ac , A substation equipment operation information I _Ad , B substation circuit breaker “on” / “off” information I _Ba , B substation power outage / charge information I _Bb , B substation accident type information I _Bc, B substation device operation information I _Bd ) is read and stored in the memory 55 in chronological order.
In addition, when the information collection unit 51 stores information necessary for determining the trial charge result in the memory 55, the information collection unit 51 outputs an information collection completion signal to the trial charge result determination unit 52.

  For example, when a test charge result determination instruction signal for instructing determination of a test charge result at the A substation is input by a duty member using an input device (not shown), the test charge result determination unit 52 is as follows. Operate.

First, the trial charging result discrimination unit 52 discriminates the trial charging result at the A substation when an accident occurs in the transmission line between the A substation and the B substation using “A substation” and “B substation” as keywords. The information collection instruction signal is output to the information collection unit 51 for instructing to read out information necessary for the storage from the database 43 and store it in the memory 55 in time series.
As a result, A substation circuit breaker “ON” / “OFF” information I _Aa , A substation power outage / charge information I _Ab , A substation accident type information I _Ac , A substation equipment operation information I _Ad , B substation Circuit breaker “ON” / “OFF” information I _Ba , B substation power failure / charge information I _Bb , B substation accident type information I _Bc and B substation device operation information I _Bd are read from the database 43 and stored in the memory 55. Are stored in chronological order.

  When the information collection completion signal is input from the information collection unit 51, the trial charge result determination unit 52 searches the memory 55 to check whether there is information indicating the final interruption at the A substation and the B substation (FIG. 2). Step S11).

  As a result, when there is no such information, the trial charging result determination unit 52 determines that “trial charging is successful” (step S12) and displays the trial charging determination result on the display device 42. The controller 53 is instructed.

  On the other hand, when there is such information, the trial charging result determination unit 52 checks whether there is information indicating that the circuit breaker 12 of the A substation has been turned on before the final interruption (step S13). .

  As a result, when there is such information, the trial charging result determination unit 52 turns on the breaker 22 of the B substation after turning on the breaker 12 of the A substation before the final interruption. The presence or absence of information indicating that it has been checked is checked (step S14).

  As a result, if there is no such information, the trial charge result determination unit 52 has confirmed that an accident occurred in this transmission line after the circuit breaker 12 of the A substation was turned on before the final interruption. The presence or absence of information indicating that is checked (step S15).

  As a result, when such information is present, the trial charging result determination unit 52 checks whether there is information indicating that the automatic recovery device 15 of the A substation has been activated before the final interruption (step S1). S16).

  As a result, when there is such information, the trial charge result determination unit 52 causes an accident to occur in the transmission line after the circuit breaker 12 of the A substation is turned on before the final interruption. After this accident occurs, the presence or absence of information indicating that the circuit breaker 12 of the A substation has been disconnected is examined (step S17).

  As a result, when such information is present, the trial charge result determination unit 52 determines that “final interruption due to accident continuation” (step S18), together with information based on the trial charge determination result. The display control unit 53 is instructed to display on the display device 42.

  When there is such information in step S14 described above, the trial charge result determination unit 52 determines that the circuit breakers 12 and 22 of the A substation and the B substation are turned on before the final interruption. The presence or absence of information indicating that an accident has occurred in the power transmission line is checked (step S19).

  As a result, when there is such information, the trial charge result determination unit 52 indicates that both the automatic recovery devices 15 and 25 of the A substation and the B substation have been activated before the final interruption. The presence or absence of information is checked (step S20).

  As a result, when there is such information, the trial charging result determination unit 52 determines that the power transmission line after the circuit breakers 12 and 22 of the A substation and the B substation are turned on before the final interruption. Then, after this accident occurs, it is checked whether or not there is information indicating that the circuit breakers 12 and 22 of the A substation and the B substation are both shut off (step S21).

As a result, when there is such information, the trial charging result determination unit 52 determines that “final interruption due to a new accident” (step S22), and also uses information based on the trial charging determination result as a basis. The display control unit 53 is instructed to display on the display device 42.
Further, the trial charging result determination unit 52 outputs a circuit breaker closing instruction signal to the circuit breaker closing signal output unit 54 in order to turn on the circuit breaker 12 of the A substation and perform retrial charging of the transmission line.

  When there is no such information in step S13 described above, the trial charge result determination unit 52 checks whether there is information indicating that the automatic recovery device 15 of the A substation has been activated before the final interruption ( Step S23).

As a result, when there is such information, the trial charge result determination unit 52 determines that “the final shutdown is due to the malfunction of the breaker 12 of the A substation” (step S24), and the trial charge determination result. Is displayed on the display device 42 together with information on the basis thereof.
Further, the trial charging result determination unit 52 outputs a circuit breaker closing instruction signal to the circuit breaker closing signal output unit 54 in order to turn on the circuit breaker 12 of the A substation and perform retrial charging of the transmission line.

  The display control unit 53 displays the trial charge determination result in the trial charge result determination unit 52 and the information on the basis thereof on the display device 42 according to the instruction of the test charge result determination unit 52.

  The circuit breaker closing signal output unit 54 outputs the circuit breaker closing instruction signal to the circuit breaker 12 of the A substation in response to the circuit breaker closing instruction signal from the trial charging result determination unit 52.

  Next, with respect to the trial charging result judgment operation in the trial charging result judgment unit 52, an example in which a ground fault occurs at 9:12:10 in the transmission line between the A substation and the B substation shown in FIG. Will be described in detail.

(1) Successful trial charging If a ground fault occurs at 9:12:10 in the transmission line between the A substation and the B substation, the protective relays 14 and 24 of the A substation and the B substation (FIG. 5). ) Detects the occurrence of a ground fault on the basis of the fault current from the instrument current transformers 11 and 21 and shuts off the circuit breakers 12 and 22 respectively, and “9:12:10 A substation accident type information I _Ac and B substation accident type information I _Bc indicating “occurred” are transmitted to the telecons 16 and 26, respectively.

When the circuit breakers 12 and 22 are cut off at 9:12:11 by the protective relays 14 and 24, respectively, the circuit breakers 12 and 22 output a circuit breaker “off” signal to the automatic recovery devices 15 and 25, respectively. , A substation circuit breaker “ON” / “OFF” information _IAa and B substation circuit breakers “ON” / “OFF” indicating that “the circuit breakers 12, 22 were interrupted at 9:12:11” Information I _Ba is transmitted to telecons 16 and 26, respectively.

The automatic recovery device 15 of the A substation starts when a circuit breaker “OFF” signal is input from the circuit breaker 12, and outputs a circuit breaker “ON” command signal to the circuit breaker 12 after about 9 seconds. While performing the trial charging of the electric wire, A substation device operation information I _Ad indicating that “the automatic restoration device 15 has been activated” is transmitted to the telecon 16.

When the circuit breaker 12 is turned on at 9:12:20 by the automatic recovery device 15, the circuit breaker 12 turns into an A substation circuit breaker indicating “the circuit breaker 12 was turned on at 9:12:20”. The “ON” / “OFF” information I _Aa is transmitted to the telecon 16.

  When the trial charging by the automatic recovery device 15 is successful, the power transmission line “charge” information is output from the charging determination device 23 to the automatic recovery device 25 at the B substation. An “ON” command signal is output to the circuit breaker 22 and the circuit breaker 22 is turned on.

When the circuit breaker 22 is turned on at 9:12:30 by the automatic recovery device 25, the circuit breaker 22 turns into a B substation circuit breaker indicating "the circuit breaker 12 was turned on at 9:12:30" “On” / “Off” information I _Ba is transmitted to the telecon 16.

  As described above, the information shown in FIG. 7A is stored in the database 43 of the control station system 40 together with the information of the other substations. When the trial charge result discrimination instruction signal to be input is input to the trial charge result discrimination unit 52, the information shown in the figure is read from the database 43 by the information collection unit 51 and stored in the memory 55.

As a result, since the information stored in the memory 55 does not include information indicating the final interruption at the A substation and the B substation (No in Step S11), the trial charge result determination unit 52 displays the trial charge result. A margin of about 30 seconds is secured as a margin for confirmation (hereinafter the same applies), and “9:13:00 Trial charge successful” is determined (step S12), and the trial charge determination result is displayed on the display device 42. The display control unit 53 is instructed as follows.
As a result, as shown in FIG. 3A, only the trial charge determination result “9:13:00 Successful trial charge” is displayed on the display device 42. Can be easily recognized.

(2) In the case of final interruption due to accident continuation If a ground fault occurs at 9:12:10 on the transmission line between A and B substations, protective relays 14 and 24 at A and B substations In addition to detecting the occurrence of a ground fault on the basis of the fault current from the current transformers 11 and 21 for the instrument, the circuit breakers 12 and 22 are shut off, respectively, and “a ground fault occurred at 9:12:10” A substation accident type information I _Ac and B substation accident type information I _Bc are transmitted to the telecons 16 and 26, respectively.

When the circuit breakers 12 and 22 are cut off at 9:12:11 by the protective relays 14 and 24, respectively, the circuit breakers 12 and 22 output a circuit breaker “off” signal to the automatic recovery devices 15 and 25, respectively. , A substation circuit breaker “ON” / “OFF” information _IAa and B substation circuit breakers “ON” / “OFF” indicating that “the circuit breakers 12, 22 were interrupted at 9:12:11” Information I _Ba is transmitted to telecons 16 and 26, respectively.

The automatic recovery device 15 of the A substation starts when a circuit breaker “OFF” signal is input from the circuit breaker 12, and outputs a circuit breaker “ON” command signal to the circuit breaker 12 after about 9 seconds. While performing the trial charging of the electric wire, A substation apparatus operation information I _Ad indicating that “the automatic restoration apparatus 15 is activated at 9:12:11” is transmitted to the telecon 16.

When the circuit breaker 12 is turned on at 9:12:20 by the automatic recovery device 15, the circuit breaker 12 turns into an A substation circuit breaker indicating “the circuit breaker 12 was turned on at 9:12:20”. The “ON” / “OFF” information I _Aa is transmitted to the telecon 16.

If the ground fault has continued, the fault current from the instrument current transformer 11 will flow for more than 2 seconds. Therefore, the protective relay 14 at the A substation detects the occurrence of the ground fault again and shuts off the circuit breaker 12. In addition, A substation accident type information I _Ac indicating that a ground fault has occurred at 9:12:22 is transmitted to the telecon 16.

When the circuit breaker 12 is interrupted at 9:12:23 by the protective relay 14, the circuit breaker 12 outputs a circuit breaker “OFF” signal to the automatic recovery device 15 and “breaks at 9:12:23”. A substation circuit breaker “ON” / “OFF” information I _Aa indicating that the device 12 has been cut off is transmitted to the telecon 16.

When the circuit breaker “OFF” signal is input from the circuit breaker 12, the automatic recovery device 15 returns the A substation device operation information I _Ad indicating that the circuit breaker 12 was finally shut down at _9:12:23 . Transmit to the telecon 16.

  As described above, the information shown in FIG. 7B is stored in the database 43 of the control station system 40 together with the information of other substations. When the trial charge result discrimination instruction signal to be input is input to the trial charge result discrimination unit 52, the information shown in the figure is read from the database 43 by the information collection unit 51 and stored in the memory 55.

As a result, the information stored in the memory 55 includes the A substation apparatus operation information I _Ad indicating that “the circuit breaker 12 has finally shut down at 9:12:23” (Yes in step S11). A substation circuit breaker “ON” / “OFF” information I _Aa indicating that “the circuit breaker 12 was turned on at 9:12:20” is present (Yes in step S13), and 9:12 There is no B substation circuit breaker “ON” / “OFF” information I _Ba indicating that “the circuit breaker 22 has been turned on” after 20 seconds (No in step S14), and “at 9:12:22” A substation accident type information I _Ac indicating that a ground fault has occurred (Yes in step S15), and A substation indicating that the automatic recovery device 15 has started at 9:12:11 place the apparatus operation information I along with the _Ad is present (step The determination in S16 Yes), the determination in order to "9 o'clock breaker 12 is interrupted 12 minutes 23 seconds" A substation breaker indicating that "ON" - "OFF" information I _Aa is present (step S17 Yes), the trial charge result discrimination unit 52 discriminates “final interruption due to accident continuation” (step S18), and displays the trial charge discrimination result and the information on the basis on the display device 42 in the order of determination. The controller 53 is instructed.
As a result, as shown in FIG. 3 (b), the display 42 displays the information on which the determinations of steps S11, S13, and S15 to A17 are based on the determination order instead of the chronological order. Since the discrimination result “9:12:52 A substation final shut-off” is displayed, the on-duty can easily recognize that the shut-down is due to continued accidents.

(3) In case of final interruption due to a new accident If a ground fault occurs at 9:12:10 on the transmission line between the A substation and the B substation, the protective relays 14 and 24 of the A substation and the B substation are In addition to detecting the occurrence of a ground fault on the basis of the fault current from the current transformers 11 and 21 for the instrument, the circuit breakers 12 and 22 are shut off, respectively, and “a ground fault occurred at 9:12:10” A substation accident type information I _Ac and B substation accident type information I _Bc are transmitted to the telecons 16 and 26, respectively.

When the circuit breakers 12 and 22 are cut off at 9:12:11 by the protective relays 14 and 24, respectively, the circuit breakers 12 and 22 output a circuit breaker “off” signal to the automatic recovery devices 15 and 25, respectively. , A substation circuit breaker “ON” / “OFF” information _IAa and B substation circuit breakers “ON” / “OFF” indicating that “the circuit breakers 12, 22 were interrupted at 9:12:11” Information I _Ba is transmitted to telecons 16 and 26, respectively.

The automatic recovery device 15 of the A substation starts when a circuit breaker “OFF” signal is input from the circuit breaker 12, and outputs a circuit breaker “ON” command signal to the circuit breaker 12 after about 9 seconds. While performing the trial charging of the electric wire, A substation apparatus operation information I _Ad indicating that “the automatic restoration apparatus 15 is activated at 9:12:11” is transmitted to the telecon 16.

When the circuit breaker 12 is turned on at 9:12:20 by the automatic recovery device 15, the circuit breaker 12 turns into an A substation circuit breaker indicating “the circuit breaker 12 was turned on at 9:12:20”. The “ON” / “OFF” information I _Aa is transmitted to the telecon 16.

If the short-circuit accident is resolved at this time, the transmission line “charge” information is output from the charging determination device 23 of the B substation to the automatic recovery device 25 of the B substation. After the elapse of time, a circuit breaker “ON” command signal is output to the circuit breaker 12 and B substation device operation information I _Bd indicating “the automatic recovery device 25 is activated at 9:12:20” is transmitted to the telecon 26. To do.

When the circuit breaker 22 is turned on at 9:12:25 by the automatic recovery device 25, the circuit breaker 22 is switched to the B substation circuit breaker indicating that the circuit breaker 22 was turned on at 9:12:25. “On” / “Off” information I _Ba is transmitted to the telecon 26.

After that, when a new ground fault occurs in the transmission line between the A substation and the B substation at 9:13:00, the protective relays 14 and 24 of the A substation and the B substation are A new ground fault occurrence is detected based on the fault currents from 11 and 21 and the circuit breakers 12 and 22 are shut off, respectively, and A indicating that a ground fault has occurred at 9:13:00 Substation accident type information I _Ac and B substation accident type information I _Bc are transmitted to telecons 16 and 26, respectively.

When the circuit breakers 12 and 22 are disconnected at 9:13:01 by the protective relays 14 and 24, the circuit breakers 12 and 22 output a circuit breaker “off” signal to the automatic recovery devices 15 and 25, respectively. A substation circuit breaker “ON” / “OFF” information _IAa and B substation circuit breakers “ON” / “OFF” indicating that “the circuit breakers 12, 22 were interrupted at 9:13:01” Information I _Ba is transmitted to telecons 16 and 26, respectively.

The automatic restoration devices 15 and 25, when the circuit breaker “off” signal is input from the circuit breakers 12 and 22, the A substation indicating that the circuit breakers 12 and 22 were finally shut down at 9:13:01 The device operation information I _Ad and the B substation device operation information I _Bd are transmitted to the telecons 16 and 26, respectively.

  As described above, the information shown in FIG. 7C is stored in the database 43 of the control station system 40 together with the information of other substations. When the trial charge result discrimination instruction signal to be input is input to the trial charge result discrimination unit 52, the information shown in the figure is read from the database 43 by the information collection unit 51 of the trial charge result judgment device 50 and stored in the memory 55. Is done.

As a result, the information stored in the memory 55 includes A substation device operation information I _Ad and B substation device operation information I indicating that the circuit breakers 12 and 13 were finally shut down at _{9:13:01. Bd} is present (Yes in step S11), and A substation circuit breaker “ON” / “OFF” information I _Aa indicating “the circuit breaker 12 was turned on at 9:12:20” is present (step The determination in S13 is Yes), and there is B substation circuit breaker “ON” / “OFF” information I _Ba indicating that “the circuit breaker 22 was turned on at 9:12:25” (the determination in Step S14 is Yes) ), There is A substation accident type information I _Ac and B substation accident type information I _Bc indicating that a ground fault has occurred at _9:13:00 (Yes in step S19), “9 Automatic recovery device 15 starts at 12:11 The "possible automatic recovery device 25 was" that together there is a B substation device operation information I _Bd indicating the start A substation device operation information I _Ad and "9 o'clock 12 minutes 20 seconds showing a (the determination in step S20 Yes), A substation circuit breaker “ON” / “OFF” information I _Aa indicating that “the circuit breaker 12 was cut off at 9:13:01” and “9:13:01” Since there is B substation circuit breaker “ON” / “OFF” information I _Ba indicating that it has been cut off (the determination in step S21 is Yes), the trial charging result determination unit 52 indicates that “the final interruption due to a new accident” At the same time (step S22), the display control unit 53 is instructed to display the result of trial charge determination and the information based on the result on the display device 42 in the order of determination.
Thereby, as shown in FIG.3 (c), after the information used as the basis of determination of step S11, S13, S14, S19-A21 was displayed on the display apparatus 42 in order of determination instead of time series order. The test charge determination result “9:13:30 A Substation Transmission Line New Accident (Test Charge Not Implemented)” is displayed, so the on-duty staff can easily recognize the final interruption due to the continued new accident it can.

Further, the trial charging result determination unit 52 outputs a circuit breaker closing instruction signal to the circuit breaker closing signal output unit 54 in order to turn on the circuit breaker 12 and perform retrial charging of the transmission line. The circuit breaker closing signal output unit 54 outputs a circuit breaker closing signal to the circuit breaker 12 in response to the circuit breaker closing instruction signal.
As a result, it is possible to eliminate the trouble of the duty staff manually turning on the circuit breaker 12 and performing retrial charging of the transmission line.

(4) In case of final interruption due to circuit breaker 15 non-operation If a ground fault occurs at 9:12:10 on the transmission line between A substation and B substation, protective relay 14 of A substation and B substation , 24 detects the occurrence of a ground fault on the basis of the fault current from the current transformers 11 and 21 and shuts off the circuit breakers 12 and 22 respectively, and “9:12:10 A substation accident type information I _Ac and B substation accident type information I _Bc indicating “occurred” are transmitted to the telecons 16 and 26, respectively.

When the circuit breakers 12 and 22 are cut off at 9:12:11 by the protective relays 14 and 24, respectively, the circuit breakers 12 and 22 output a circuit breaker “off” signal to the automatic recovery devices 15 and 25, respectively. , A substation circuit breaker “ON” / “OFF” information _IAa and B substation circuit breakers “ON” / “OFF” indicating that “the circuit breakers 12, 22 were interrupted at 9:12:11” Information I _Ba is transmitted to telecons 16 and 26, respectively.

The automatic recovery device 15 of the A substation starts when a circuit breaker “OFF” signal is input from the circuit breaker 12, and outputs a circuit breaker “ON” command signal to the circuit breaker 12 after about 9 seconds. While performing the trial charging of the electric wire, A substation apparatus operation information I _Ad indicating that “the automatic restoration apparatus 15 is activated at 9:12:11” is transmitted to the telecon 16.

If the circuit breaker 12 remains disconnected at this time, the automatic recovery device 15 of the substation A does not receive the circuit breaker “ON” signal from the circuit breaker 12 indefinitely, and therefore, “9:13:01 A substation apparatus operation information I _Ad indicating that “the terminal has been finally shut down” is transmitted to the telecon 16.

  As described above, the information shown in FIG. 7 (d) is stored in the database 43 of the control station system 40 together with the information of other substations. When the trial charge result discrimination instruction signal to be input is input to the trial charge result discrimination unit 52, the information shown in the figure is read from the database 43 by the information collection unit 51 of the trial charge result judgment device 50 and stored in the memory 55. Is done.

As a result, the information stored in the memory 55 includes A substation device operation information I _Ad indicating that the circuit breaker 12 was finally shut down at 9:13:01 (Yes in step S11). 9:13:01 Before the A substation circuit breaker “ON” / “OFF” information I _Aa indicating that “the circuit breaker 12 was turned on” is not present (No in step S13), “9 Because there is A substation device operation information I _Ad indicating that the automatic recovery device 15 is activated at 12:11:12 (Yes in step S23), the test charge result determination unit 52 determines that the circuit breaker 12 In addition, the display control unit 53 is instructed to display the trial charge determination result and the information based on the result on the display device 42 in the order of determination.
As a result, as shown in FIG. 3D, the information on which the determinations of steps S11, S13, and S23 are displayed on the display device 42 in the determination order instead of the time series order, and then the trial charge determination result. Since “9:13:30 A substation, transmission line trial charging is not performed” is displayed, the shift staff can easily recognize that the circuit breaker 12 is in the final shutdown.

Further, the trial charging result determination unit 52 outputs a circuit breaker closing instruction signal to the circuit breaker closing signal output unit 54 in order to turn on the circuit breaker 12 and perform retrial charging of the transmission line. The circuit breaker closing signal output unit 54 outputs a circuit breaker closing signal to the circuit breaker 12 in response to the circuit breaker closing instruction signal.
As a result, it is possible to eliminate the trouble of the duty staff manually turning on the circuit breaker 12 and performing retrial charging of the transmission line.

  In order to confirm the situation from the occurrence of the accident in the transmission line between the A substation and the B substation in time series, the duty shifter is stored in the memory 55 as shown in FIGS. 4 (a) to 4 (d). The test charge determination result in the test charge result determination unit 52 may be displayed after the displayed information is arranged in time series. Also in this case, since the trial charge determination result in the trial charge result determination unit 52 is displayed on the last line, the shift staff can easily determine the trial charge result.

11, 21 Current transformers 12, 22 Breakers 13, 23 Charge determination devices 14, 24 Protective relays 15, 25 Automatic recovery devices 16, 26 Telecons 30 Information collection / distribution devices 40 Control station systems 41 Reception / processing devices 42 Display Device 43 Database 50 Trial charging result discriminating device 51 Information collecting unit 52 Trial charging result discriminating unit 53 Display control unit 54 Breaker closing signal output unit 55 Memory I _Aa A Substation circuit breaker “ON” / “OFF” information I _Ab A Substation blackout / charge information I _Ac A Substation accident type information I _Ad A Substation equipment operation information I _Ba B Substation circuit breaker “On” / “Off” information I _Bb B Substation blackout / charge information I _Bc B Substation Accident type information I _Bd B substation equipment operation information S11 to S24

Claims (5)

Trial charging result discrimination for discriminating the result of trial charging carried out at the first substation when an accident occurs in a transmission line laid between the first substation and the second substation A device (10) comprising:
First substation circuit breaker “ON” / “OFF” information (I _Aa ) transmitted from the first circuit breaker (12) installed on the first substation side of the transmission line, the first First substation accident type information (I _Ac ) transmitted from the first protective relay (14) installed in one substation and the first automatic recovery device installed in the first substation The first substation device operation information (I _Ad ) transmitted from (15) and the second circuit breaker (22) installed on the second substation side of the transmission line. 2 substation breaker “on” / “off” information (I _Ba ), second substation accident type information transmitted from the second protective relay (24) installed in the second substation (I _Bc) and the second converter station transmitted from the second second automatic recovery apparatus installed in the substation (25) And置動operation information memory for storing (I _Bd) in chronological order (55),
The first and second substation circuit breaker “on” / “off” information, the first and second substation fault type information, and the first and second substations stored in the memory in time series order. It is checked whether there is information satisfying the judgment criteria in each procedure of the trial charging determination procedure in the station apparatus operation information, and the result of the trial charging is “test charging successful” depending on the presence or absence of information satisfying the judgment criteria in each procedure. ”,“ Final interruption due to accident continuation ”,“ Final interruption due to new accident ”and“ Final interruption due to malfunction of the first circuit breaker ” ,
A display control unit (53) for causing the external display device (42) to display a test charge determination result in the test charge result determination unit according to an instruction of the test charge result determination unit;
A test charge result discriminating apparatus comprising: The trial charge determination procedure is:
The first step (S11, S12) for determining whether or not the first information indicating the final shut-off is present.
If there is the first information, a second step (S13) for checking whether or not there is second information indicating that the first circuit breaker has been turned on before the final interruption;
If the second information is present, the presence / absence of third information indicating that the second circuit breaker has been turned on after the first circuit breaker has been turned on before the final break. A third step (S14) for checking
If the third information is not present, the presence or absence of fourth information indicating that an accident has occurred in the power transmission line after the first circuit breaker 12 is turned on before the final interruption. A fourth step (S15) for checking;
If there is the fourth information, a fifth step (S16) for checking whether or not there is fifth information indicating that the first automatic recovery device has been activated before the final shutdown;
When the fifth information is present, the first circuit breaker is cut off after an accident occurs in the transmission line after the first circuit breaker is turned on before the final interruption. A sixth step (S17, S18) for checking whether or not there is sixth information indicating that, and if the sixth information is present, determining "final interruption due to accident continuation";
If there is the third information in the third step, an accident has occurred in the power transmission line after the first and second circuit breakers were turned on before the final interruption. A seventh step (S19) for checking the presence or absence of seventh information indicating
If there is the seventh information, an eighth step (8) for checking whether or not there is eighth information indicating that both the first and second automatic recovery devices have been activated before the final shut-off. S20)
If the eighth information is present, the first and second after the first and second circuit breakers are turned on before the final interruption and after an accident has occurred in the transmission line. The ninth step (S21, S21, S9) is performed to check whether or not there is ninth information indicating that both of the circuit breakers have been interrupted. S22)
If there is no second information in the second step, the presence or absence of tenth information indicating that the first automatic recovery device has been activated before the final shut-off is checked. If there is the information, the tenth step (S23, S24) for discriminating that "the final break due to the first breaker malfunction",
The trial charge result discriminating apparatus according to claim 1, comprising:   When the display control unit displays the test charge determination result in the test charge result determination unit on the display device, information on the basis of the test charge determination result in the first to tenth information is also provided. 3. The trial charge result determination apparatus according to claim 2, wherein the display is arranged on the display device in order of the first to tenth steps.   When the display control unit displays the test charge determination result in the test charge result determination unit on the display device, the first and second substation breakers “ON” and “ 3. The "off" information, the first and second substation accident type information, and the first and second substation device operation information are also displayed on the display device in chronological order. Trial charging result discrimination device.   When the trial charge result discriminating unit discriminates "final interruption due to a new accident" or "final interruption due to the first circuit breaker not operating", the first circuit breaker is turned on to retry the transmission line. The test charge result discriminating device according to any one of claims 1 to 4, further comprising a circuit breaker closing signal output unit (54) for performing charging.

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