CN117630547A - Distribution network automation terminal testing device - Google Patents
Distribution network automation terminal testing device Download PDFInfo
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- CN117630547A CN117630547A CN202311645985.9A CN202311645985A CN117630547A CN 117630547 A CN117630547 A CN 117630547A CN 202311645985 A CN202311645985 A CN 202311645985A CN 117630547 A CN117630547 A CN 117630547A
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 86
- 238000004088 simulation Methods 0.000 claims abstract description 31
- 230000004044 response Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000007935 neutral effect Effects 0.000 claims description 12
- 238000004146 energy storage Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 6
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- 238000012986 modification Methods 0.000 description 2
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- 238000012544 monitoring process Methods 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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Abstract
The invention discloses a distribution network automatic terminal testing device. The device comprises: the device comprises a control module, a detection switching module, a voltage detection module, a fault simulation module and a relay module. The voltage detection module is connected between the detection switching module and the control module; the fault simulation module, the relay module and the detection switching module are all connected to the control module; the detection switching module is used for switching a connection path between the voltage detection module and the distribution network automation terminal; the voltage detection module is used for detecting whether each connecting channel is provided with remote control signal output or not; the relay module comprises an output interface and at least one relay unit; the control module is used for controlling the fault simulation module to simulate the fault condition of the distribution network and controlling the detection switching module to switch the connection path; and controlling the relay unit to output a response signal according to the remote control signal so as to test the distribution network automation terminal. The embodiment of the invention can be suitable for testing various distribution network automation terminals, improves the testing efficiency and reduces the testing cost.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a distribution network automatic terminal testing device.
Background
The distribution network automation terminal is an important component in the power system, and the functions of the distribution network automation terminal cover the aspects of real-time monitoring, control, protection, optimization of the operation of the power distribution network and the like. The distribution network automation terminal can timely discover abnormal conditions in the power grid, such as overload, short circuit and other faults through real-time monitoring of parameters such as current, voltage, frequency and the like, so that corresponding measures are taken for protection, the expansion of faults is prevented, and the stable operation of the power system is ensured.
However, the model types of distribution network automation terminals are different, and the distribution network automation terminals used by the distribution network automation terminals may be different in different parts of the power system. In the prior art, different testing devices are needed for testing different distribution network automation terminals, the cost for testing is high, and the testing efficiency is low.
Disclosure of Invention
The invention provides a distribution network automatic terminal testing device, which is used for improving the testing efficiency and reducing the testing cost.
The distribution network automation terminal testing device comprises: the device comprises a control module, a detection switching module, a voltage detection module, a fault simulation module and a relay module;
the voltage detection module is connected between the detection switching module and the control module; the detection switching module is also connected with the control module; the detection switching module is used for switching a connection path between the voltage detection module and the distribution network automation terminal; the voltage detection module is used for detecting whether each connecting channel between the distribution network automation terminal and the voltage detection module has remote control signal output or not;
the fault simulation module is connected with the control module; the relay module comprises an output interface and at least one relay unit; the control end of the relay unit is connected with the control module; the signal output end of the relay unit is connected with the output interface; the output interface is used for connecting the distribution network automation terminal; the control module is used for controlling the fault simulation module to simulate the fault condition of the distribution network and controlling the detection switching module to switch the connection path; and controlling the relay unit to output a response signal according to the remote control signal so as to test the distribution network automation terminal.
Optionally, the detection switching module includes: detecting a switching unit and an input interface;
the input end of the detection switching unit is connected with the input interface; the output end of the detection switching unit is connected with the voltage detection module; the control end of the detection switching unit is connected with the control module;
the detection switching unit is used for switching the connection path between the input interface and the distribution network automation terminal according to the control of the control module so as to control the connection path between the voltage detection module and the distribution network automation terminal.
Optionally, the detection switching unit includes a plurality of input ends, and the input interface includes a plurality of function ends connected with the plurality of input ends of the detection switching unit in a one-to-one correspondence manner;
the plurality of functional ends of the input interface include: the remote control opening public end, the remote control closing public end, the protection opening public end and the protection closing end.
Optionally, the fault simulation module includes: the system comprises an alternating current constant current output unit, a voltage output unit and a distribution network output interface;
the alternating current constant current output unit is connected between the control module and the distribution network output interface; the voltage output unit is connected between the control module and the distribution network output interface;
the alternating current constant current output unit is used for outputting analog current so as to simulate the fault condition of the distribution network current; the voltage output unit is used for outputting analog voltage so as to simulate the voltage fault condition of the distribution network; the distribution network output interface is used for connecting the distribution network automation terminal.
Optionally, the analog current is a 50 hz current; the analog voltage is a 50 hz voltage.
Optionally, the distribution network output interface includes: a current live wire end, a current neutral wire end, a voltage live wire end and a voltage neutral wire end;
the current live wire end and the current neutral wire end are connected to the alternating current constant current output unit; the voltage neutral terminal and the voltage live terminal are connected to the voltage output unit.
Optionally, the output interface includes: a common terminal and at least one output terminal;
the output end is connected with the signal output end of the corresponding relay unit; the common terminal is connected with the common terminal of the relay unit.
Optionally, the apparatus further comprises: an operation panel and a display module;
the operation panel and the display module are connected to the control module.
Optionally, the apparatus further comprises: the power supply module is used for supplying power to the control module and the fault simulation module, and the control module is also used for supplying power to the detection switching module, the voltage detection module and the relay module.
Optionally, the power module includes: an energy storage unit and a conversion unit;
the input end of the conversion unit is connected with the energy storage unit; the first output end of the conversion unit is connected with the control module; the second output end of the conversion unit is connected with the fault simulation module;
the energy storage unit is used for storing electric energy; the conversion unit is used for providing different power supply voltages for the control module and the fault simulation module.
According to the embodiment of the invention, the fault condition of the distribution network is simulated through the fault simulation module, the control module detects the connection path between the switching module and the voltage detection module, the voltage detection module detects the remote control signal sent by the distribution network automation terminal, and the relay unit responds to the remote control signal, so that the test of the distribution network automation terminal is realized. The distribution network automatic terminal testing device provided by the embodiment of the invention can be suitable for testing various types of distribution network automatic terminals, improves the testing efficiency and reduces the testing cost.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a testing device for an automatic terminal of a distribution network according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another distribution network automation terminal testing device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another distribution network automation terminal testing device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention provides a distribution network automatic terminal testing device. The device can be applied to a power system to test the distribution network automation terminal in the power system. Fig. 1 is a schematic diagram of a distribution network automation terminal testing device according to an embodiment of the present invention. Referring to fig. 1, the apparatus includes: a control module 110, a detection switching module 120, a voltage detection module 130, a fault simulation module 140, and a relay module 150.
The voltage detection module 130 is connected between the detection switching module 120 and the control module 110; the detection switching module 120 is also connected with the control module 110; the detection switching module 120 is configured to switch a connection path between the voltage detection module 130 and the distribution network automation terminal 160; the voltage detection module 130 is configured to detect whether each connection path between the distribution network automation terminal 160 and the voltage detection module 130 has a remote control signal output; the fault simulation module 140 is connected with the control module 110; the relay module 150 includes an output interface 151 and at least one relay unit 152; the control end IO of the relay unit 152 is connected with the control module 110; the signal output end of the relay unit 152 is connected with the output interface 151; the output interface 151 is used for connecting with the distribution network automation terminal 160; the control module 110 is configured to control the fault simulation module 140 to simulate a distribution network fault condition, and control the detection switching module 120 to switch a connection path; and controlling the relay unit 152 to output a response signal according to the remote control signal to test the distribution network automation terminal 160.
Specifically, when testing the distribution network automation terminal 160, it is necessary to remove the original connection line of the distribution network automation terminal 160 and connect the distribution network automation terminal 160 to the distribution network automation terminal testing device. The distribution network automation terminal 160 can be tested after the connection between the distribution network automation terminal 160 and the distribution network automation terminal testing device is completed.
The distribution network failure conditions are various in the daily operation of the distribution network automation terminal 160, and the failure response strategies that the distribution network automation terminal 160 needs to execute are different in different distribution network failures. Thus, at the time of testing, the control module 110 controls the fault simulation module 140 to simulate different distribution network fault conditions to see if the distribution network automation terminal 160 can execute corresponding fault response policies for the simulated different fault conditions.
After the distribution network automation terminal 160 detects the fault condition simulated by the fault simulation module 140, the distribution network automation terminal 160 executes a corresponding fault response strategy according to the detected distribution network fault condition, and sends a remote control signal to the corresponding switching device according to the fault response strategy. It should be noted that, the remote control signal sent by the distribution network automation terminal 160 includes a closing command and a separating command, and in different fault conditions, the remote control signals sent by the distribution network automation terminal 160 to the switching devices are also different.
The control module 110 controls the detection switching module 120 to conduct the connection path between the voltage detection module 130 and the distribution network automation terminal 160 in a circulating manner so as to detect the signal output of each remote control signal output port of the distribution network automation terminal 160, thereby realizing the adaptation of different distribution network automation terminals 160. The remote control signal may be a level signal, for example. When the voltage detection module 130 detects the remote control signal, the voltage detection module 130 generates a first control signal and transmits the first control signal to the control module 110. The control module 110 generates a second control signal according to the first control signal and transmits the second control signal to the relay unit 152 corresponding to the connection path detected at this time. The relay unit 152 generates a response signal after receiving the second control signal, and outputs the response signal to the distribution network automation terminal 160 through the output interface 151, so as to implement a test on the distribution network automation terminal 160. It should be noted that the return signal includes a closing signal and an opening signal, the closing signal corresponds to a closing command of the remote control signal, and the opening signal corresponds to an opening command of the remote control signal. Illustratively, whether the fault response policies performed by the distribution network automation terminal 160 for the simulated different fault conditions are correct or not may be verified by the control module 110.
In the embodiment of the invention, the fault simulation module 140 simulates the fault condition of the distribution network, the control module 110 detects the switching module 120 to switch the connection path between the distribution network automation terminal 160 and the voltage detection module 130, the voltage detection module 130 detects the remote control signal sent by the distribution network automation terminal 160 and the relay unit 152 responds to the remote control signal, thereby realizing the test of the distribution network automation terminal 160. The distribution network automation terminal testing device provided by the embodiment of the invention can be suitable for testing various types of distribution network automation terminals 160, improves the testing efficiency and reduces the testing cost.
Fig. 2 is a schematic diagram of another distribution network automation terminal testing device according to an embodiment of the present invention. Optionally, referring to fig. 2, on the basis of the above embodiment, the detection switching module 120 includes: a detection switching unit 122 and an input interface 121.
The input end of the detection switching unit 122 is connected with the input interface 121; the output end of the detection switching unit 122 is connected with the voltage detection module 130; the control end of the detection switching unit 122 is connected with the control module 110; the detection switching unit 122 is configured to switch the connection path between the input interface 121 and the distribution network automation terminal 160 according to the control of the control module 110, so as to control the connection path between the voltage detection module 130 and the distribution network automation terminal 160.
Specifically, each remote control signal output port of the distribution network automation terminal 160 is connected to an input interface 121, and a plurality of connection paths are provided between the input interface 121 and the detection switching unit 122. The control module 110 controls the conduction between each connection path and the voltage detection module 130 through the detection switching unit 122, so as to realize the signal detection of each remote control signal output port of the distribution network automation terminal 160 by the voltage detection module 130.
Fig. 3 is a schematic diagram of another distribution network automation terminal testing device according to an embodiment of the present invention. Alternatively, referring to fig. 3, the detection switching unit 122 includes a plurality of input terminals, and the input interface 121 includes a plurality of function terminals connected to the plurality of input terminals of the detection switching unit 122 in a one-to-one correspondence manner. The plurality of functional ends of the input interface 121 include: remote control opening common terminal 1211, remote control opening terminal 1212, remote control closing common terminal 1213, remote control closing terminal 1214, protection opening common terminal 1215, protection opening terminal 1216, protection closing common terminal 1217, and protection closing terminal 1218.
Optionally, with continued reference to fig. 3, the fault simulation module 140 includes: an alternating current constant current output unit 141, a voltage output unit 142 and a distribution network output interface 143.
The alternating current constant current output unit 141 is connected between the control module 110 and the distribution network output interface 143; the voltage output unit 142 is connected between the control module 110 and the distribution network output interface 143; the ac constant current output unit 141 is configured to output an analog current to simulate a distribution network current fault condition; the voltage output unit 142 is configured to output an analog voltage to simulate a distribution network voltage fault condition; the distribution network output interface 143 is used to connect the distribution network automation terminal 160.
In particular, distribution network faults can be broadly divided into current faults and voltage faults. When current fault test in distribution network faults is performed for the distribution network automation terminal 160, the control module 110 controls the alternating current constant current output unit 141 to simulate fault current; when the voltage fault test in the distribution network fault is performed with respect to the distribution network automation terminal 160, the control module 110 controls the voltage output unit 142 to perform the simulation of the fault current. When the current fault test is performed, the distribution network automation terminal test device and the distribution network automation terminal 160 form a loop, and the current in the loop is always an analog current output by the ac constant current output unit 121.
On the basis of the above embodiments, alternatively, the analog current output by the ac constant current output unit 141 is a 50 hz current; the analog voltage output by the voltage output unit 142 is a 50 hz voltage.
Optionally, with continued reference to fig. 3, the distribution network output interface 143 includes: current hot terminal 1431, current neutral terminal 1432, voltage hot terminal 1433, and voltage neutral terminal 1434. The current live terminal 1431 and the current neutral terminal 1432 are connected to the ac constant current output unit 141; the voltage hot terminal 1433 and the voltage neutral terminal 1434 are connected to the voltage output unit 142.
Optionally, with continued reference to fig. 3, the output interface 151 includes: a common terminal 1511 and at least one output terminal 1512. The output terminal 1512 is connected to the signal output terminal NO of the corresponding relay unit 152; the common terminal 1511 is connected to the common terminal COM of the relay unit 152.
Optionally, with continued reference to fig. 3, based on the foregoing embodiments, the apparatus further includes: an operation panel 170 and a display module 180. The operation panel 170 and the display module 180 are connected to the control module 110. Illustratively, the operation panel 170 may be used for a user to change the testing policy according to a different distribution network automation terminal 160, and the display module 180 may be used for displaying the current testing state.
On the basis of the above embodiments, optionally, in combination with fig. 1 and 3, the apparatus further includes: the power module 190, the power module 190 is used for supplying power to the control module 110 and the fault simulation module 140, and the control module 110 is further used for supplying power to the detection switching module 120, the voltage detection module 130 and the relay module 150.
Optionally, with continued reference to fig. 3, the power module 190 includes: an energy storage unit 191 and a conversion unit 192.
An input end of the conversion unit 192 is connected with the energy storage unit 191; a first output terminal of the conversion unit 192 is connected to the control module 110; a second output terminal of the conversion unit 192 is connected to the fault simulation module 140; the energy storage unit 191 is used to store electric energy; the conversion unit 192 is configured to provide different supply voltages to the control module 110 and the fault simulation module 140.
The energy storage unit 191 may be a lithium battery, other energy storage devices, or power generation devices, for example, which is not limited in this embodiment. Specifically, the control module 110 and the fault simulation module 140 in the distribution network automation terminal test device have different input voltage requirements, so the conversion unit 192 is disposed in the distribution network automation terminal test device to provide different voltages to the control module 110 and the fault simulation module 140.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. An automatic terminal test device for a distribution network, which is characterized by comprising: the device comprises a control module, a detection switching module, a voltage detection module, a fault simulation module and a relay module;
the voltage detection module is connected between the detection switching module and the control module; the detection switching module is also connected with the control module; the detection switching module is used for switching a connection path between the voltage detection module and the distribution network automation terminal; the voltage detection module is used for detecting whether each connecting channel between the distribution network automation terminal and the voltage detection module has remote control signal output or not;
the fault simulation module is connected with the control module; the relay module comprises an output interface and at least one relay unit; the control end of the relay unit is connected with the control module; the signal output end of the relay unit is connected with the output interface; the output interface is used for connecting the distribution network automation terminal; the control module is used for controlling the fault simulation module to simulate the fault condition of the distribution network and controlling the detection switching module to switch the connection path; and controlling the relay unit to output a response signal according to the remote control signal so as to test the distribution network automation terminal.
2. The distribution network automation terminal test device according to claim 1, wherein the detection switching module comprises: detecting a switching unit and an input interface;
the input end of the detection switching unit is connected with the input interface; the output end of the detection switching unit is connected with the voltage detection module; the control end of the detection switching unit is connected with the control module;
the detection switching unit is used for switching the connection path between the input interface and the distribution network automation terminal according to the control of the control module so as to control the connection path between the voltage detection module and the distribution network automation terminal.
3. The distribution network automation terminal test device according to claim 2, wherein the detection switching unit comprises a plurality of input ends, and the input interface comprises a plurality of function ends which are connected with the plurality of input ends of the detection switching unit in a one-to-one correspondence manner;
the plurality of functional ends of the input interface include: the remote control opening public end, the remote control closing public end, the protection opening public end and the protection closing end.
4. The distribution network automated terminal test equipment of claim 1, wherein the fault simulation module comprises: the system comprises an alternating current constant current output unit, a voltage output unit and a distribution network output interface;
the alternating current constant current output unit is connected between the control module and the distribution network output interface; the voltage output unit is connected between the control module and the distribution network output interface;
the alternating current constant current output unit is used for outputting analog current so as to simulate the fault condition of the distribution network current; the voltage output unit is used for outputting analog voltage so as to simulate the voltage fault condition of the distribution network; the distribution network output interface is used for connecting the distribution network automation terminal.
5. The distribution network automated terminal test equipment of claim 4, wherein the analog current is a 50 hz current; the analog voltage is a 50 hz voltage.
6. The distribution network automated terminal test equipment of claim 4, wherein the distribution network output interface comprises: a current live wire end, a current neutral wire end, a voltage live wire end and a voltage neutral wire end;
the current live wire end and the current neutral wire end are connected to the alternating current constant current output unit; the voltage neutral terminal and the voltage live terminal are connected to the voltage output unit.
7. The distribution network automated terminal test equipment of claim 1, wherein the output interface comprises: a common terminal and at least one output terminal;
the output end is connected with the signal output end of the corresponding relay unit; the common terminal is connected with the common terminal of the relay unit.
8. The distribution network automated terminal test equipment of claim 1, further comprising: an operation panel and a display module;
the operation panel and the display module are connected to the control module.
9. The distribution network automated terminal test equipment of claim 1, further comprising: the power supply module is used for supplying power to the control module and the fault simulation module, and the control module is also used for supplying power to the detection switching module, the voltage detection module and the relay module.
10. The distribution network automated terminal test equipment of claim 9, wherein the power module comprises: an energy storage unit and a conversion unit;
the input end of the conversion unit is connected with the energy storage unit; the first output end of the conversion unit is connected with the control module; the second output end of the conversion unit is connected with the fault simulation module;
the energy storage unit is used for storing electric energy; the conversion unit is used for providing different power supply voltages for the control module and the fault simulation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311645985.9A CN117630547A (en) | 2023-11-30 | 2023-11-30 | Distribution network automation terminal testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311645985.9A CN117630547A (en) | 2023-11-30 | 2023-11-30 | Distribution network automation terminal testing device |
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| CN117630547A true CN117630547A (en) | 2024-03-01 |
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| CN202311645985.9A Pending CN117630547A (en) | 2023-11-30 | 2023-11-30 | Distribution network automation terminal testing device |
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| CN (1) | CN117630547A (en) |
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