CN205749746U - A kind of DTU test gimulator and DTU test system - Google Patents

Abstract

The utility model discloses a DTU test simulator and a DTU test system. The test simulator comprises: an impulse response module connected with the DTU and used to generate a corresponding pulse control signal based on the pulse signal sent by the DTU; The DTU and the impulse response module are connected to generate a corresponding position signal based on the impulse control signal, so that the position signal received by the DTU can be sent to the DTU after the DTU receives the position signal The corresponding relationship of the pulse signal determines whether the DTU passes the pulse feedback module of the test. When the switch remote control fails, the DTU test simulator is used to test the DTU. When it is determined that the switch remote control failure is caused by the DTU, there is no need to stop the switch equipment, thereby reducing the number of outage switch equipment and the need for switches. The number of times the equipment is tested greatly reduces the workload and improves work efficiency.

Description

A kind of DTU test simulator and DTU test system

technical field

The utility model relates to the technical field of power distribution automation, in particular to a DTU test simulator and a DTU test system.

Background technique

With the increase in the number of distribution automation terminals (DTUs) that need to be operated in the distribution network, the workload of DTU operation and maintenance and elimination of defects will also increase.

At present, for the operation and maintenance work of DTU, usually when the remote control of the switch fails, the switchgear is shut down once, and the switchgear and DTU are checked and repaired respectively, so as to determine the remote control of the switch caused by the switchgear and DTU. Failed equipment; however, the inventor of the utility model found that in actual operation, the switch remote control failure caused by DTU failure usually accounts for the majority. Simultaneous investigation and maintenance of switchgear and DTU will lead to increased workload and lower work efficiency.

To sum up, there is a problem of low work efficiency in the technical solutions for implementing DTU operation, maintenance and defect elimination in the prior art.

Utility model content

The purpose of the utility model is to provide a DTU test simulator and a DTU test system, which are used to solve the problem of low work efficiency in the technical solutions for realizing DTU operation, maintenance and defect elimination in the prior art.

In order to achieve the above object, the utility model provides the following technical solutions:

A DTU test simulator, including:

An impulse response module that is connected to the DTU and is used to generate a corresponding impulse control signal based on the impulse signal sent by the DTU;

and respectively connected with the DTU and the impulse response module, for generating a corresponding position signal based on the pulse control signal, so that after the DTU receives the position signal, it can be used based on the position signal received by the DTU and the The corresponding relationship of the pulse signal sent by the DTU determines whether the DTU passes the pulse feedback module of the test.

Preferably, the impulse response module includes a first relay, a second relay and a third relay, the two ends of the first relay are respectively connected to the positive pole and the negative pole of the power supply of the DTU, and the second relay is connected to the At the same time of the pulse feedback module, its two ends are respectively connected to the closing pulse output end of the DTU and the negative pole of the power supply, and the two ends of the third relay are respectively connected to the opening pulse output end of the DTU and the power supply Negative connection, between the second relay and the closing pulse output terminal also includes a first switch connected to the first relay and a third switch connected to the third relay, the first switch connected One end of the second relay is also connected to the positive pole of the power supply through a second switch connected to the second relay.

Preferably, one end of the first relay connected to the negative pole of the power supply is also connected to the positive pole of the first diode, and one end of the first relay connected to the positive pole of the power supply is also connected to the negative pole of the first diode ; One end of the second relay connected to the negative pole of the power supply is also connected to the positive pole of the second diode, and one end of the second relay connected to the closing pulse output end is also connected to the negative pole of the second diode ; One end of the third relay connected to the negative pole of the power supply is also connected to the positive pole of the third diode, and one end of the third relay connected to the output terminal of the opening pulse signal is also connected to the negative pole of the third diode connect.

Preferably, the pulse feedback module includes a closing control switch and an opening control switch both connected to the second relay, and both ends of the closing control switch and the opening control switch are respectively connected to the DTU The negative pole of the power supply and the position signal receiving end are connected.

Preferably, the pulse feedback module further includes a grounding control switch, the two ends of the grounding control switch are respectively connected to the negative pole of the power supply of the DTU and the position signal receiving end.

Preferably, the DTU test simulator is connected to the DTU through a cable.

A DTU test system includes a DTU and a DTU test simulator as described in any one of the above.

Preferably, the DTU includes a set of indicator lights, the set of indicator lights is connected to the DTU test simulator, and the corresponding indicator lights are lit under the action of the position signal.

Preferably, the DTU includes a voice broadcast module, the voice broadcast module is connected with the DTU test simulator, and performs corresponding voice broadcast under the action of the position signal.

Preferably, the DTU includes a display module, the display module is connected to the DTU test simulator, and displays corresponding content under the action of the position signal.

The utility model provides a DTU test simulator and a DTU test system, wherein the test simulator includes: an impulse response module connected to the DTU for generating a corresponding pulse control signal based on the pulse signal sent by the DTU; and Respectively connected with the DTU and the impulse response module, for generating a corresponding position signal based on the impulse control signal, so that after the DTU receives the position signal, it can be used based on the position signal received by the DTU and the The correspondence between the pulse signals sent by the DTU determines whether the DTU passes the pulse feedback module of the test. Using the above-mentioned DTU test simulator disclosed in the present application, when it is determined that the position signal received by the DTU corresponds to the pulse signal sent by the DTU, it is determined that the DTU passes the test; otherwise, it is determined that the DTU fails the test. Thus, when the remote control of the switch fails, the above-mentioned DTU test simulator is used to test the DTU. If the DTU passes the test, the failure of the remote control of the switch is not caused by the DTU. At this time, the test of the switchgear is carried out by decommissioning the switchgear; If the DTU fails the test, the switch remote control failure is caused by the DTU, and there is no need to stop the switchgear, let alone test the switchgear, thereby reducing the number of times the switchgear is shut down and the number of tests on the switchgear is greatly reduced. Reduced workload and improved work efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the structural representation of a kind of DTU test simulator that the utility model embodiment provides;

Fig. 2 is the first structural representation of the impulse response module in a kind of DTU test simulator that the utility model embodiment provides;

Fig. 3 is the second structural representation of the impulse response module in a kind of DTU test simulator that the utility model embodiment provides;

Fig. 4 is the first structural representation of the pulse feedback module in a kind of DTU test simulator that the utility model embodiment provides;

Fig. 5 is a second structural schematic diagram of a pulse feedback module in a DTU test simulator provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1 to Fig. 5, the specific implementation of a kind of DTU test simulator provided for the utility model embodiment, wherein, 11 represents impulse response module, 12 represents impulse feedback module, K1 represents the first relay, K2 represents the first Two relays, K3 represents the third relay, K1:1 represents the first switch, K2:1 represents the second switch, K3:1 represents the third switch, D1 represents the first diode, D2 represents the second diode, D3 Indicates the third diode, 133 indicates the opening pulse signal output terminal, 103 indicates the closing pulse signal output terminal, 102 and 802 indicate the negative pole of the power supply, 101 indicates the positive pole of the power supply, K2:2 indicates the closing control switch, K2:3 indicates Opening control switch, T represents the grounding control switch, 803, 805 and 807 represent different interfaces of the signal receiving end of the DTU, in addition, some connection methods in the implementation mode, such as the connection between the first relay and the first switch, the connection between the second relay and the The connection between the second switch, the opening control switch and the closing control switch, the connection between the third relay and the third switch, etc. are not shown in the figure.

Please refer to Fig. 1, it has shown the structural representation of a kind of DTU test simulator that the utility model embodiment provides, can comprise:

Connected with the DTU, the impulse response module 11 for generating a corresponding impulse control signal based on the impulse signal sent by the DTU;

and respectively connected with the DTU and the impulse response module, for generating a corresponding position signal based on the pulse control signal, so that after the DTU receives the position signal, it can be used based on the position signal received by the DTU and the The corresponding relationship of the pulse signal sent by the DTU determines whether the DTU passes the pulse feedback module 12 of the test.

It should be noted that, in a DTU test simulator provided by an embodiment of the present invention, the pulse signal may include a closing pulse signal and an opening pulse signal, and correspondingly, the position signal may include a closing position signal and an opening position signal. Signals, etc. Of course, other settings can also be made according to actual needs. Specifically, after the DTU test simulator receives the pulse signal sent by the DTU, the corresponding position signal is obtained through the response of the pulse response module and the pulse feedback module to the signal, and the position signal is sent to the DTU, and the staff or the DTU Or the pre-set judging device determines whether the position signal corresponds to the pulse signal sent by it. Of course, other settings can also be made to judge the correspondence between the above two signals according to actual needs. When the two are determined to be corresponding signals , it proves that the DTU has passed the test, that is, it can normally realize the remote control switch function; when it is determined that the two are not corresponding signals, it proves that the DTU has failed the test, that is, it cannot normally realize the remote control switch function. Take the pulse signal as the closing pulse signal as an example. If the position signal received by the DTU is the closing position signal, that is, the closing pulse signal sent and the closing position signal received are both signals corresponding to the closing operation. It is determined that the sent pulse signal and the received position signal are corresponding signals; if the position signal received by the DTU is not the closing position signal, that is, the sent closing pulse signal and the received position signal are not both corresponding to the closing operation signal, it is determined that the sent pulse signal and the received position signal are not corresponding signals.

Utilize above-mentioned DTU test emulator disclosed in the present application, when switch remote control fails, utilize above-mentioned DTU test emulator to realize the test for DTU, if DTU passes the test, then switch remote control failure is not caused by DTU, this time through decommissioning The switchgear is tested for the switchgear; if the DTU fails the test, the failure of the switch remote control is caused by the DTU, and there is no need to stop the switchgear, and there is no need to test the switchgear, thereby reducing the number of outage switchgear and the The number of times the switchgear is tested greatly reduces the workload and improves work efficiency.

In addition, it should be noted that for the installation and commissioning of the DTU, in the existing technology, it is usually necessary to stop the corresponding switchgear in the distribution network and complete the on-site opening and closing debugging from the DTU to the switchgear. Finally, the switchgear is decommissioned to complete the remote control joint debugging of the master station-DTU-switchgear. It can be seen that the whole debugging process needs to decommission the switchgear twice, but in actual work, it is very important to decommission the switchgear Difficult things, it is necessary to arrange the outage plan 2 weeks in advance, and at the same time, repeated switching operations in multiple outages of switchgear greatly increase the workload of the operation and maintenance team, and the time spent on two outages of switchgear accounts for 20% of the commissioning process. About 70%, that is, it takes a long time, resulting in low work efficiency. Using the above-mentioned DTU test simulator disclosed in this application, after the whole ring communication transformation is completed and the conditions are met, there is no need to stop the switchgear, but directly use the DTU test simulator to complete the corresponding debugging work, that is, the master station-DTU-switchgear The remote joint debugging work of the main station-DTU-DTU test simulator is changed to the remote joint debugging work of the main station-DTU-DTU test simulator, thereby reducing the number of outages of the switchgear, saving time and greatly reducing the workload, thereby improving work efficiency.

At the same time, using the above-mentioned DTU test simulator disclosed in the present application to complete the DTU test has the advantages of simple operation, high applicability and reliability, and greatly reduces the labor cost due to the reduced workload.

A kind of DTU test simulator that the embodiment of the present invention provides, the structure diagram of described impulse response module is shown in Figure 2, can comprise first relay, second relay and the 3rd relay, the two ends of described first relay respectively connected to the positive pole of the power supply and the negative pole of the power supply of the DTU, while the second relay is connected to the pulse feedback module, its two ends are also respectively connected to the closing pulse output end of the DTU and the negative pole of the power supply. Both ends of the third relay are respectively connected to the opening pulse output end of the DTU and the negative pole of the power supply, and a second relay connected to the first relay is also included between the second relay and the closing pulse output end. A switch and a third switch connected to the third relay, one end of the first switch connected to the second relay is also connected to the positive pole of the power supply through the second switch connected to the second relay.

It should be noted that the first relay is connected with the first switch to control the switch state of the first switch, the second relay is connected with the second switch to control the switch state of the second switch, and the third relay is connected with the third switch to control the switch state of the second switch. The switching state of the three switches. Among them, the first relay is a power supply relay for checking the power supply of the DTU, thereby increasing the operational safety, the second relay is a closing relay, and the third relay is an opening relay. Specifically, the pulse signal can include a closing pulse signal and opening pulse signal, and the first switch and the second switch can be normally open switches, and the third switch can be normally closed switches, thus, the working principle of the above impulse response module can be:

Remote control closing operation: the closing pulse output terminal of the DTU sends a closing pulse signal, and at the same time the DTU opens the power supply. Due to the opening of the power supply, the first relay works, that is, the first switch is controlled to close, and the third switch is a normally closed switch. Therefore, The second relay circuit is turned on, and the second relay receives the closing pulse signal and acts, that is, controls the second relay to close to realize self-holding, and sends a closing pulse control signal to control the pulse feedback module in the closing pulse Under the action of the control signal, the corresponding closing position signal is generated to complete the remote closing operation;

Remote control opening process: the opening pulse output terminal of the DTU sends the opening pulse signal (at this time, the DTU has opened the operating power supply, that is, the first switch is in the closed state), the third relay receives the opening pulse signal and acts, that is, controls the first switch. The three relays are disconnected, the circuit of the second relay is disconnected, the second relay resets, the second switch is disconnected, and an opening pulse control signal is sent to control the pulse feedback module to generate a corresponding branching pulse under the action of the switching pulse signal. Brake position signal, to complete the remote control opening operation.

Thus, through the setting of the above-mentioned impulse response module, the response to the impulse signal is realized, and the corresponding impulse control signal is generated, so as to realize the control of the impulse feedback module by using the impulse control signal, and complete the corresponding operation.

In addition, in the above-mentioned impulse response module, as shown in FIG. 3, one end of the first relay connected to the negative pole of the power supply may also be connected to the positive pole of the first diode, and one end of the first relay connected to the positive pole of the power supply It can also be connected to the negative pole of the first diode; one end of the second relay connected to the negative pole of the power supply can also be connected to the positive pole of the second diode, and the second relay is connected to the closing pulse output One end of the terminal can also be connected to the negative pole of the second diode; one end of the third relay connected to the negative pole of the power supply can also be connected to the positive pole of the third diode, and the third relay is connected to the opening One end of the pulse signal output end may also be connected to the cathode of the third diode. The function of the above three diodes, that is, the first diode, the second diode and the third diode is to prevent the inductive coil of the corresponding relay from having a reverse relatively high voltage at the moment of power failure. Damage to the equipment, because this voltage may be several times higher than the voltage of the power supply, which is likely to cause other equipment in the line to fail to work normally or even break down and damage the equipment (such as burning out the transistor of the relay). Therefore, with the above-mentioned three reverse diodes, a discharge path is given to the reverse voltage at the moment the relay is powered off, thereby preventing the voltage from damaging the equipment.

A kind of DTU test simulator that the embodiment of the present invention provides, described pulse feedback module can be shown in Figure 4, can comprise the closing control switch and opening control switch that all are connected with described second relay, described closing Both ends of the gate control switch and the gate opening control switch are respectively connected to the negative pole of the power supply and the position signal receiving end of the DTU.

It should be noted that the opening control switch and the closing control switch are respectively connected to the second relay in the pulse feedback module and are controlled by the second relay. Specifically, the working principle of the above-mentioned pulse feedback module can be as follows: when the pulse signal is a closing pulse signal, the second relay generates a corresponding closing pulse control signal, and the closing control switch closes after receiving the closing pulse control signal, The opening control switch opens after receiving the closing pulse control signal, which generates a closing position signal, and the DTU detects the above actions of the opening control switch and the closing control switch, that is, receives the closing position signal; when the pulse signal is the opening position signal When the pulse signal is received, the second relay generates the corresponding opening pulse control signal, the closing control switch opens after receiving the opening pulse control signal, and the opening control switch closes after receiving the opening pulse control signal, that is, the opening position signal is generated , the DTU detects the above-mentioned actions of the opening control switch and the closing control switch, that is, it receives the opening position signal. Thus, the process of generating a corresponding position signal under the action of the pulse control signal is realized.

In addition, specifically, the closing position switch can be a normally open switch, and the opening control switch can be a normally closed switch. Of course, other settings can also be made according to actual needs, all within the protection scope of the present invention.

It should be noted that the above-mentioned pulse feedback module may also include a grounding control switch, as shown in FIG. 5 , the two ends of the grounding control switch are respectively connected to the negative pole of the power supply and the position signal receiving end of the DTU.

The grounding control switch can be specifically a normally open switch, which can directly receive an external grounding control signal, and then close under the action of the control signal, that is, generate a grounding position signal. The DTU detects the above-mentioned action of the grounding control switch, that is, receives Grounding position signal, and corresponding operation, and then complete the remote grounding operation. Therefore, the staff can determine whether the DTU has passed the test according to the corresponding relationship between the operation of the DTU, that is, the grounding control signal input from the outside world, that is, if the operation completed by the DTU is a grounding operation, it means that the DTU has passed the test; Passed the test. In addition, the DTU needs to pass the tests here and above to pass the test, and if one fails, it means that it has failed the test.

It should be noted that the DTU test simulator and the DTU can be connected through a cable. Of course, other settings can also be made according to actual needs, all of which are within the protection scope of the present utility model.

In the production process of the above-mentioned DTU test simulator, the following steps can be included: design a complete circuit structure diagram, design and manufacture a circuit board based on the circuit structure diagram, solder relays and switches and other components, and package the DTU including the above-mentioned circuit board Test the simulator and complete the production.

Corresponding to the above-mentioned DTU test simulator, the embodiment of the utility model also provides a DTU test system, which may include a DTU and a DTU test simulator as described in any one of the above.

Wherein, the DTU may include a set of indicator lights, the set of indicator lights is connected to the DTU test simulator, and the corresponding indicator lights are lit under the action of the position signal.

Specifically, the number of lights included in the indicator light group can be the same as the number of types of position signals. When the DTU receives the position signal, it can control the indicator light corresponding to the position signal to be on, and other indicator lights to be off. For example, the position signal includes The closing position signal, the opening position signal and the grounding position signal, the indicator group includes three indicator lights. When the DTU receives the closing position signal, the indicator light corresponding to the closing operation is on, and the other indicator lights are off. When the DTU When the opening position signal is received, the indicator light corresponding to the opening operation is on, and the other indicator lights are off. When the DTU receives the grounding position signal, the indicator light corresponding to the grounding operation is on, and the other indicator lights are off.

In the above DTU test system, the DTU may include a voice broadcast module, the voice broadcast module is connected with the DTU test simulator, and performs corresponding voice broadcast under the action of the position signal.

Specifically, the voice broadcast module broadcasts the voice corresponding to the position signal. If the position signal received by the DTU is the closing position signal, the voice broadcast module broadcasts the "closing" voice.

In the above DTU test system, the DTU may include a display module, which is connected to the DTU test simulator, and displays corresponding content under the action of the position signal.

Specifically, the display module displays the content corresponding to the position signal. If the position signal received by the DTU is a closing position signal, the display module displays the words "closing".

Through one or more of the above indicator group, voice broadcast module and display module, the staff can intuitively and quickly know the type of position signal received by the DTU, and then judge the corresponding relationship between the pulse signal sent by the DTU and the position signal. Further judge whether the DTU can pass the test.

In addition, taking the DTU including the indicator light group as an example to illustrate, using the above-mentioned DTU test simulator to complete the corresponding test experiment can include the following steps:

1. Connect the DTU test simulator to the DTU;

2. Closing test, close the power circuit breaker on the DTU, that is, open the power supply, press the closing button, and then send a closing pulse signal, if the indicator light corresponding to the closing operation is on, it means that the closing test is successful, otherwise, then Indicates that the closing experiment failed;

3. Opening test, close the power switch on the DTU, that is, open the power supply, press the opening button, and the opening pulse signal will be sent out. If the indicator light corresponding to the opening operation is on, it means that the opening test is successful, otherwise, it means The opening test failed;

4. Grounding test, press the grounding button outside to send a grounding operation signal to the DTU test simulator. If the indicator light corresponding to the grounding operation on the DTU is on, it means that the grounding test is successful, otherwise, it means that the grounding test has failed.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a DTU test gimulator, it is characterised in that including:

Being connected with DTU, the pulse signal for sending based on described DTU generates the impulse response model of corresponding pulse control signal Block；

And be connected with described DTU and described impulse response module respectively, for generating corresponding position based on described pulse control signal Confidence number, to supply the position signalling received based on described DTU to send out with described DTU after described DTU receives described position signalling The corresponding relation of the pulse signal sent determines that whether this DTU is by the pulse feedback module of test.

Simulator the most according to claim 1, it is characterised in that described impulse response module include the first relay, Two relays and the 3rd relay, the two ends of described first relay are respectively with the positive source of described DTU and power cathode even Connecing, while described second relay connects described pulse feedback module, its two ends are defeated with the closing pulse of described DTU the most respectively Go out end and described power cathode connect, the two ends of described 3rd relay respectively with separating brake pulse output end and the institute of described DTU State power cathode to connect, also include between described second relay and described closing pulse outfan with described first relay even The first switch connect and the 3rd switch being connected with described 3rd relay, described first switch connects described second relay One end is connected with described positive source also by the second switch being connected with described second relay.

Simulator the most according to claim 2, it is characterised in that described first relay connects the one of described power cathode End also positive pole with the first diode is connected, and one end of the described first relay described positive source of connection is also with the described 1st The negative pole of pole pipe connects；Described second relay connects one end also positive pole with the second diode of described power cathode and is connected, Described second relay connects one end also negative pole with described second diode of described closing pulse outfan and is connected；Described Three relays connect one end also positive pole with the 3rd diode of described power cathodes and are connected, described in described 3rd relay connects One end of separating brake pulse signal output end also negative pole with described 3rd diode is connected.

Simulator the most according to claim 2, it is characterised in that described pulse feedback module includes all continuing with described second Shutting-brake control switch and separating brake that electrical equipment connects control switch, and described shutting-brake control switch and described separating brake control the two ends of switch It is connected with power cathode and the position signalling receiving terminal of described DTU respectively.

Simulator the most according to claim 4, it is characterised in that described pulse feedback module also includes that ground connection controls to open Closing, described ground connection controls the two ends of switch and is connected with power cathode and the position signalling receiving terminal of described DTU respectively.

Simulator the most according to claim 5, it is characterised in that pass through between described DTU test gimulator and described DTU Cable connects.

7. a DTU tests system, it is characterised in that include that DTU and the DTU as described in any one of claim 1 to 6 tests mould Intend device.

DTU the most according to claim 7 tests system, it is characterised in that described DTU includes display lamp group, described instruction Lamp group is connected with described DTU test gimulator, and lights the display lamp of correspondence under the effect of described position signalling.

DTU the most according to claim 7 tests system, it is characterised in that described DTU includes voice broadcast module, described Voice broadcast module is connected with described DTU test gimulator, and carries out broadcasting of corresponding voice under the effect of described position signalling Report.

DTU the most according to claim 7 tests system, it is characterised in that described DTU includes display module, described display Module is connected with described DTU test gimulator, and carries out the display of corresponding content under the effect of described position signalling.