CN104113135B - Accident transformer station interval failure fast positioning method - Google Patents

Abstract

A kind of accident transformer station interval failure fast positioning method; the protection separating brake outlet signal of the protection device being spaced by each for transformer station bar passes to transformer station's main frame and concentrator station main frame with measure and control device switch sub-gate signal through network simultaneously, synthesizes interval accident resultant signal according to AND gate logic；By grave gas actuating signal, load-carrying Gas Signal, main transformer high-pressure side and low-side switch sub-gate signal is had to synthesize according to AND gate logic；The actuating signal hauling oneself willingly into protection device divided with bus connection switch, switching signal synthesizes according to AND gate logic；Full station accident resultant signal is synthesized according still further to disjunction gate logic；It is fabricated to forward table input database；Being set to eject immediately and eject after key frame ejection by the trigger condition that each transformer station key frame and interval split screen eject on concentrator station main frame, multiple picture layereds arrange.Provide the benefit that convenient operation, intuitive display, just can trigger monitoring station main frame when protection act causes separating brake and eject key frame and split screen.

Description

Rapid positioning method for interval faults in accidental substations

technical field

The invention relates to a rapid positioning method for interval faults in accidental substations.

Background technique

With the development of automation equipment, unattended substations are becoming more and more popular. During the operation of several unattended substations, a centralized control center is required to conduct unified scheduling of these substations. The operators of the centralized control center need to face the monitoring computer every day. , monitor and control all substations in the area.

Due to the different sizes of the areas, the operators of the centralized control center usually monitor and control dozens of substations at the same time. Find the substation where the accident occurred in the ten substations, and then search for the bay sub-screen where the switch is opened among dozens of bay lines in the substation, and finally perform a restorative operation on the bay switch according to the regulations. In the previous method of displaying interval screens, it is necessary to repeat multiple operations to find faulty substation interval screens, which wastes a lot of time and affects work efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a convenient operation and intuitive display. When the protection action (the protection exit signal is generated at this time) causes the opening (the switch opening signal is generated at this time), the corresponding interval accident total signal will be generated. And the total accident signal of the whole station, triggering the main screen of the monitoring station host to pop up the main screen and sub-screen, and when multiple substations have an opening fault, multiple fault interval screens can be popped up and displayed in layers, and the fault can be quickly located and searched Rapid fault location method for bay faults in accidental substations.

Technical solution of the present invention is:

A method for quickly locating interval faults in an accidental substation, the steps of which are as follows:

1. The protection opening and exit signals of the protection devices in each bay of the substation and the corresponding measurement and control device switch opening signals are transmitted to the substation host and the centralized control station host through the network at the same time, and are synthesized into corresponding intervals according to the "AND" gate logic accident signal;

2. The substation transformer heavy gas action signal is combined with the corresponding main transformer high-voltage side switch opening signal and main transformer low-voltage side switch opening signal through the substation host and centralized control station host according to the "AND" logic, and the substation transformer has The load-bearing gas signal and the corresponding main transformer high-voltage side switch opening signal and main transformer low-voltage side switch opening signal are synthesized by the substation host and centralized control station host according to the "AND" gate logic;

3. The action signal of the substation standby automatic switching protection device is combined with the bus tie switch opening and closing signals through the substation host and the centralized control station host according to the "AND" gate logic;

4. The substation host and centralized control station host will synthesize the signals synthesized according to the logic of "AND" gate into the total accident signal of the whole station according to the logic of "OR gate";

5. Make the general accident signal of the whole station, the general accident signal of each interval, and all the hard contact signals and soft signals of each interval in the substation into a forwarding table in sequence and enter it into the substation host database and the centralized control station host database;

6. On the host computer of the centralized control station, set the trigger condition for the pop-up of the main wiring diagram screen of each substation to pop up immediately when the total accident signal of the substation is received; set the pop-up condition of the split wiring diagram sub-screen of the substation to After receiving the total interval accident signal of the corresponding bay, the corresponding bay wiring diagram sub-screen pops up after the main wiring diagram screen of the substation pops up; when the main wiring diagram screen pops up, it occupies the left half of the main screen display, and the bay wiring diagram sub-screen pops up Then it occupies the right half of the main screen display, and when multiple screens pop up, they are arranged in layers, the latest pop-up screen is at the bottom, and so on; the monitoring screens of other non-failure substations will automatically switch to the backup screen .

In the host computer of the substation and the centralized control station, the hold time of the total accident signal of the whole station is 3 seconds, and it will automatically reset after 3 seconds. When a certain line of a substation is opened, the remote centralized control center will immediately pop up the picture of the corresponding interval of the substation according to the total accident signal of the substation. When the switch is opened, multiple accident total signals will be generated, and multiple identical screens will pop up on the side of the centralized control station, which will affect the normal monitoring of the operating personnel; When other switches in the substation are subsequently opened, the centralized control center cannot pop up the picture of the opening line, which affects the normal work of the operators.

The present invention adds the total accident and interval accident total signals in the forwarding table on the substation side, and combines the opening and exit signals of the protection device in the substation with the opening and closing signals of the switch. ) causes the opening of the gate (at this time, the switch opening signal is generated) will generate the corresponding interval accident total signal and the whole station accident total signal, triggering the main screen of the monitoring station host to pop up the main screen and sub-screen, prompting the operators of the centralized control station The corresponding processing is carried out, and the artificial closing or opening operation will not trigger the main signal of the interval accident, so it will not affect the normal work of the remote operator.

Description of drawings

Fig. 1 is the generation schematic diagram of accident general signal of the present invention;

Fig. 2 is a schematic diagram of part of the content of the forwarding table of the present invention;

Fig. 3 is a schematic diagram of drawing and generating by the host computer of the centralized control station of the present invention.

detailed description

As shown in the figure, the rapid location method of interval faults in the accidental substation, the steps are as follows:

1. As shown in Figure 1, the protection opening and exit signals of the protection devices of each interval (interval 1, interval 2...interval n) of the substation and the corresponding measurement and control device switch opening signal are simultaneously transmitted to the substation host and the collector through the network. The host computer of the control station synthesizes the corresponding interval accident total signal according to the logic of the "AND" gate.

2. The substation transformer heavy gas action signal is combined with the corresponding main transformer high-voltage side switch opening signal and main transformer low-voltage side switch opening signal through the substation host and centralized control station host according to the "AND" logic, and the substation transformer has The load-bearing gas signal and the corresponding main transformer high-voltage side switch opening signal and main transformer low-voltage side switch opening signal are synthesized by the substation host and the centralized control station host according to the "AND" logic; in this embodiment, there are two transformers in one substation , respectively No. 1 transformer and No. 2 transformer.

3. The action signal of the automatic switching protection device of the substation and the opening and closing signal of the bus tie switch are synthesized by the substation host and the centralized control station host according to the "AND" gate logic.

4. The substation mainframe and centralized control station mainframe will synthesize the signals synthesized according to the "AND" logic according to the "OR gate" logic into the total station accident signal; in the substation mainframe and centralized control station mainframe, the total station accident signal The hold time of the signal is 3 seconds, and it will automatically reset after 3 seconds.

5. Make the total accident signal of the whole station, the general accident signal of each interval, and all the hard contact signals and soft signals of each interval in the substation into a forwarding table in sequence, as shown in Figure 2, and enter it into the substation host database and centralized control station host database.

6. On the host computer of the centralized control station, set the trigger condition for the pop-up of the main wiring diagram screen of each substation to pop up immediately when the total accident signal of the substation is received; set the pop-up condition of the split wiring diagram sub-screen of the substation to After receiving the total interval accident signal of the corresponding bay, the corresponding bay wiring diagram sub-screen pops up after the main wiring diagram screen of the substation pops up; when the main wiring diagram screen pops up, it occupies the left half of the main screen display, and the bay wiring diagram sub-screen pops up Then it occupies the right half of the main screen display, and when multiple screens pop up, they are arranged in layers, the latest pop-up screen is at the bottom, and so on; the monitoring screens of other non-failure substations will automatically switch to the backup screen . In Fig. 3, the centralized control station mainframe receives the total accident total of substation 1, the total accident total of substation 2, the total accident total of substation n total station, the total accident total of substation 1 interval, the sum total of accidents of substation 2 interval and the total accident total of substation n interval, and the corresponding pop-up Substation 1, substation 2, substation n main wiring diagram and substation 1, substation 2, substation n interval circuit diagram.

Claims (2)

1. an accident transformer station interval failure fast positioning method, is characterized in that step is as follows:

1), the protection separating brake outlet signal of the protection device being spaced by each for transformer station bar switchs sub-gate signal through net with corresponding measure and control device Network passes to transformer station's main frame and concentrator station main frame simultaneously, by transformer station's main frame and concentrator station main frame by each protection separating brake outlet signal with Corresponding measure and control device switch sub-gate signal synthesizes the interval accident resultant signal of correspondence respectively according to AND gate logic；

2), substation transformer grave gas actuating signal is divided with corresponding main transformer high side switch sub-gate signal and main transformer low-side switch Lock signal synthesizes according to AND gate logic through transformer station's main frame and concentrator station main frame simultaneously, and substation transformer has load-carrying gas Signal and corresponding main transformer high side switch sub-gate signal and main transformer low-side switch sub-gate signal are through transformer station's main frame and concentrator station master Machine synthesizes according to AND gate logic；

3), the actuating signal of transformer substation spare power automatic switching protection device and bus connection switch divided, switching signal is through transformer station's main frame and concentrator station master Machine synthesizes according to AND gate logic；

4), by transformer station's main frame and concentrator station main frame, each signal synthesized according to AND gate logic is synthesized according to disjunction gate logic Full station accident resultant signal；

5), by all hard contact point signal and the soft signal at interval each in station accident resultant signal entirely, each interval accident resultant signal and transformer station It is fabricated to forward table typing transformer station host data base and concentrator station host data base in order；

6), on concentrator station main frame, it is set to receive the complete of this transformer station by the trigger condition that each Substation Bus Arrangement figure picture ejects Stand accident resultant signal time eject immediately；By the ejection condition setting of the interval wiring diagram split screen of this transformer station for receiving accordingly between Every interval accident resultant signal, after the main wiring diagram picture of transformer station ejects, eject corresponding interval wiring diagram split screen again；Main Wiring diagram picture occupies the left-half that main screen shows when ejecting, interval wiring diagram split screen occupies after ejecting The right half part that main screen shows, and when eject multiple picture time according to hierarchal arrangement, the picture of up-to-date ejection at the bottom, The like；The supervision picture of the transformer station that other do not break down will be automatically switched on standby screen.

Accident transformer station the most according to claim 1 interval failure fast positioning method, is characterized in that in transformer station's main frame and collection control In station host, the retention time of full station accident resultant signal is 3 seconds, automatic resetting after 3 seconds.