CN114397528A - Logic action test method and device for remote spare power automatic switching device - Google Patents
Logic action test method and device for remote spare power automatic switching device Download PDFInfo
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- CN114397528A CN114397528A CN202210100256.4A CN202210100256A CN114397528A CN 114397528 A CN114397528 A CN 114397528A CN 202210100256 A CN202210100256 A CN 202210100256A CN 114397528 A CN114397528 A CN 114397528A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention provides a logic action test method and device for a remote spare power automatic switching device. The method comprises the following steps: after a first spare power automatic switching logic action testing device located in a first transformer substation sends a voltage loss instruction to a second spare power automatic switching logic action testing device located in a second transformer substation, a first voltage loss voltage is output to a first remote spare power automatic switching device located in the first transformer substation; if the first automatic backup power switching logic action test device detects a tripping signal sent by the first remote automatic backup power switching device, disconnecting a line between a position monitoring interface of a first breaker of the first remote automatic backup power switching device and a direct-current positive power supply of a first transformer substation; the second spare power automatic switching logic action testing device outputs a second voltage loss voltage after receiving the voltage loss instruction; and if the second spare power automatic switching logic action testing device detects that the second remote spare power automatic switching device sends a switching-on signal, switching on a line between a position monitoring interface of a second breaker of the second remote spare power automatic switching device and a direct-current positive power supply of a second transformer substation.
Description
Technical Field
The invention relates to the field of power supply systems, in particular to a method and a device for testing logic actions of a remote spare power automatic switching device.
Background
The automatic standby power switching devices are all called automatic standby power switching devices and are applied to transformer substations. The bus of the transformer substation is usually supplied with power by at least two power supply lines, one power supply line is in an operating state, the other power supply line is in a standby state, and when the power supply line in the operating state loses power, the backup automatic switching device can be connected into the power supply line in the standby state, so that the transformer substation cannot lose power. The remote spare power automatic switching device is a spare power automatic switching device which is designed aiming at the characteristics of a hand-in-hand structure power grid and is reconstructed on the basis of a conventional spare power automatic switching device. The remote automatic backup power switching device is applied to two substations which are located at different places, and when one of the two substations is in voltage loss, the power supply line is switched for the substations through the matching action of the remote automatic backup power switching devices respectively located at the two substations, so that the power supply safety of the substations is guaranteed.
In order to ensure the operation safety of the power grid, the spare power automatic switching system needs to be tested so as to carry out relevant inspection on the action processing logic of the spare power automatic switching device. However, since the serial power supply of the power grid involves a plurality of substations, and the buses and lines usually associated with the backup power automatic switching devices are in an operating state, the actual power failure check cannot be performed. Therefore, the mode of simulating the working conditions is usually adopted for inspection, and for the remote spare power automatic switching devices related to a plurality of substations, how to accurately simulate the field conditions of the power failure of the substation, and reduce errors caused by manual operation in the inspection process is a technical problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention provides a logic action testing method and device for a remote spare power automatic switching device, and aims to overcome the defects that in the prior art, when the field condition of a power failure of a transformer substation is simulated manually, errors are caused by manual operation, and the power failure of the transformer substation is difficult to simulate accurately.
The embodiment of the invention provides a logic action test method of a remote spare power automatic switching device, which comprises the following steps:
after a first spare power automatic switching logic action testing device located in a first transformer substation sends a voltage loss instruction for indicating the second spare power automatic switching logic action testing device to output a second voltage loss voltage to a second spare power automatic switching logic action testing device located in a second transformer substation, a first voltage loss voltage is output to a first remote spare power automatic switching device located in the first transformer substation; if the first spare power automatic switching logic action test device detects a tripping signal which is sent by the first remote spare power automatic switching device and aims at a first circuit breaker located in the first transformer substation, disconnecting a line between a position monitoring interface of the first circuit breaker of the first remote spare power automatic switching device and a direct-current positive power supply located in the first transformer substation; the tripping signal is used for indicating the first circuit breaker to disconnect a power supply source of the first substation from a first power supply line for supplying power to each device in the first substation, and the tripping signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage; after receiving the voltage loss instruction sent by the first spare power automatic switching logic action test device, the second spare power automatic switching logic action test device outputs a second voltage loss voltage to the second remote spare power automatic switching device; if the second spare power automatic switching logic action testing device detects a switching-on signal which is sent by the second remote spare power automatic switching device and aims at a second circuit breaker located in the second transformer substation, a circuit between a position monitoring interface of the second circuit breaker of the second remote spare power automatic switching device and a direct-current positive power supply located in the second transformer substation is switched on; the switching-on signal is used for indicating the second circuit breaker to be communicated with a power supply source of the second transformer substation to supply power to a second power supply line of each device in the second transformer substation, and the switching-on signal is sent by the second remote automatic bus transfer device based on the second voltage loss voltage and a switching-on instruction sent by the first remote automatic bus transfer device.
In some embodiments, the first backup power automatic switching logic action test device outputting the first voltage loss voltage comprises: and the voltage loss simulation unit of the first spare power automatic switching logic action test device outputs a first voltage loss voltage to the voltage acquisition interface of the first remote spare power automatic switching device, and the first remote spare power automatic switching device is instructed to send the trip signal according to the first voltage loss voltage detected by the voltage acquisition interface.
In some embodiments, the outputting the second voltage loss voltage by the second backup power automatic switching logic action test device comprises: and the voltage loss simulation unit of the second spare power automatic switching logic action test device outputs a second voltage loss voltage to the voltage acquisition interface of the second remote spare power automatic switching device, and instructs the second remote spare power automatic switching device to send the switching-on signal according to the second voltage loss voltage detected by the voltage acquisition interface.
In some embodiments, the first backup automatic switching logic action test device sets the working mode of the first backup automatic switching logic action test device to be the local working mode in response to detecting the setting operation of the local working mode; and the second spare power automatic switching logic action test device responds to the detected setting operation of the remote working mode and sets the working mode of the second spare power automatic switching logic action test device to the remote working mode.
In some embodiments, the first automatic backup power switching logic action test device displays prompt information for indicating that a tripping signal sent by the first remote automatic backup power switching logic action test device is received; and the second spare power automatic switching logic action testing device displays prompt information for indicating that a closing signal sent by the second remote spare power automatic switching device is received.
The embodiment of the invention provides a first spare power automatic switching logic action testing device, which is positioned in a first transformer substation and comprises:
the voltage loss instruction sending unit is used for sending a voltage loss instruction to a second spare power automatic switching logic action testing device located in a second transformer substation, and the voltage loss instruction is an instruction for indicating the second spare power automatic switching logic action testing device to output a second voltage loss voltage; the first voltage loss simulation unit is used for outputting a first voltage loss voltage to a first remote spare power automatic switching device to be tested; the trip signal detection unit is used for detecting a trip signal of the first remote spare power automatic switching device to be tested aiming at a first circuit breaker located in the first substation; the tripping signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage; and the circuit breaker disconnection state simulation unit is used for disconnecting a line between a position monitoring interface of a first circuit breaker of the first remote spare power automatic switching device to be tested and a direct-current positive power supply of the first transformer substation.
In some embodiments, the first backup power automatic switching logic action test device further comprises a first control unit, the breaker open state simulation unit comprises an electromagnetic relay, the electromagnetic relay comprises a node pair, and a first node of the node pair is connected with a direct current positive power supply; a second node in the node pair is connected with a position monitoring interface of a first circuit breaker of the first remote spare power automatic switching device to be tested; the circuit for disconnecting the position monitoring interface of the first breaker of the first remote spare power automatic switching device to be tested and the direct current positive power supply of the first transformer substation comprises: the first control unit drives the electromagnetic relay to disconnect a connection line between the first node and the second node.
In some embodiments, the trip signal detection unit includes an optocoupler relay.
In some embodiments, the first no-voltage simulation unit comprises a controllable alternating current air switch and relay protection tester; the input end of the controllable alternating current air switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current air switch is connected with the voltage acquisition interface of the first remote spare power automatic switching device.
The embodiment of the invention provides a second spare power automatic switching logic action testing device, which is positioned in a second transformer substation and comprises:
the voltage loss instruction receiving unit is used for receiving a voltage loss instruction sent by a first spare power automatic switching logic action testing device located in a first transformer substation, and the voltage loss instruction is an instruction of the first spare power automatic switching logic action testing device for indicating a second spare power automatic switching logic action testing device to output a second voltage loss voltage; the second voltage loss simulation unit is used for outputting a second voltage loss voltage to a second remote spare power automatic switching device to be tested; the switching-on signal detection unit is used for detecting a switching-on signal which is sent by the second remote spare power automatic switching device to be tested and aims at a second circuit breaker located in the second transformer substation; the switching-on signal is sent by the second remote spare power automatic switching device based on the second voltage loss voltage and a switching-on instruction sent by the first remote spare power automatic switching device. And the circuit breaker closing state simulation unit is used for closing a line between a position monitoring interface of a second circuit breaker of the second remote spare power automatic switching device to be tested and a direct-current positive power supply of the second transformer substation.
Therefore, the invention provides a method and a system for testing the logic action of the remote automatic backup power switching device, so as to accurately and efficiently complete the inspection of the remote automatic backup power switching device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of an application scenario of a method for testing a logic operation of a remote automatic backup power switching device according to a preferred embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a method for testing logic operation of the remote automatic backup power switching device according to a preferred embodiment of the present invention;
fig. 3 is a block diagram of a first testing apparatus for testing the logic operation of the backup power automatic switching device according to a preferred embodiment of the present invention;
fig. 4 is a block diagram of a second testing apparatus for testing the logic operation of the backup power automatic switching device according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of an application scenario of a method for testing a logic operation of a remote automatic backup power switching device according to a preferred embodiment of the present invention.
As shown in fig. 1, the substations 1 to N located at N different locations are hand-in-hand looped network connections, and an open-loop operation mode is adopted. N may be any non-0 integer, for example, 2 or 3, or may be other values, and is not limited by the description of the present invention.
As shown in fig. 1, each substation is equipped with at least one remote automatic spare power switching device. The automatic backup power switching devices are all called as automatic standby power switching devices, and when a power supply of the transformer substation fails, the automatic backup power switching devices switch available power supplies for the transformer substation, so that the transformer substation can continue to operate normally. The remote automatic backup power switching device can be a spare automatic power switching device which is reconstructed on the basis of a conventional spare automatic power switching device and designed according to the characteristics of a power grid with a hand-in-hand structure, and a plurality of sets of devices are matched with each other to jointly protect the power supply safety of a power system.
As shown in fig. 1, there is a common incoming line between any two substations, and the lines are respectively controlled by switches (e.g. circuit breakers) of the two substations, for example, switch K1-2 is controlled by substation 1, and switch K2-2 is controlled by substation 2.
As shown in fig. 1, each substation is equipped with at least one power supply, wherein the power supply equipped in the substation 1 may be an operating power supply, and the operating power supply supplies power to each device in the substation 1, and the substation 1 supplies power to each device in the substation 2 by collinearity, and so on.
Under the condition that the operating power supply of the substation 1 can normally supply power, the corresponding breaker K1-1 is in a closed state, and in the substations 2-N, the breakers K2-1-KN-1 corresponding to the power supply are in an open state.
In some embodiments, the method described in the present invention may be used, when the power supply of the substation is operating normally, to use the backup automatic switching device logic operation test device to simulate the operating condition, that is, when the power supply of the substation fails, to complete the test of the logic operation of the remote backup automatic switching device. Please refer to fig. 2 for a detailed testing method, which is not described herein.
Fig. 2 is a flowchart illustrating a method for testing logic operation of a remote automatic backup power switching device according to a preferred embodiment of the invention.
As shown in fig. 2, the method for testing the logic operation of the remote automatic backup power switching device may include the following steps.
Step 210, a first backup power automatic switching logic action testing device located in a first substation sends a voltage loss instruction to a second backup power automatic switching logic action testing device located in a second substation.
The first substation may be a substation located at an open loop point among a plurality of substations connected by a hand-ring network connection, for example, the substation 1 shown in fig. 1. The second substation may be a substation located at a non-open loop point among a plurality of substations connected by a hand-ring network connection, for example, substation 2 shown in fig. 1.
In some embodiments, the first backup automatic switching logic action test device sets the operation mode of the first backup automatic switching logic action test device to the in-place operation mode in response to detecting the setting operation of the in-place operation mode.
And the second spare power automatic switching logic action testing device responds to the detected setting operation of the remote working mode and sets the working mode of the second spare power automatic switching logic action testing device to the remote working mode. The local working mode is the working mode of the spare power automatic switching logic action testing device when the substation is operated by a person on duty on the spot. The remote working mode is the working mode of the spare power automatic switching logic action testing device when the transformer substation is unattended. For example, an operator can enable the first backup power automatic switching logic operation testing device to send a voltage loss instruction to the second backup power automatic switching logic operation testing device through a key and delay to output a voltage loss voltage, so that execution of a testing program is started, the second backup power automatic switching logic operation testing device waits for receiving the voltage loss instruction sent by the first backup power automatic switching logic operation testing device, and execution of the testing program is started according to the voltage loss instruction.
The backup automatic switching device logic operation testing device may be a device for testing whether a logic operation of a remote backup automatic switching device is correct. The first backup power automatic switching logic action testing device and the second backup power automatic switching logic action testing device may be backup power automatic switching logic action testing devices located at different substations, for example, the first backup power automatic switching logic action testing device is located at the first substation, and the second backup power automatic switching logic action testing device is located at the second substation.
The voltage loss command is a command for instructing the other backup power automatic switching logic operation test devices to output a voltage loss voltage. In some embodiments, the voltage loss instruction is used for instructing the second backup power automatic switching logic action test device to output a second voltage loss voltage.
The voltage loss voltage is a voltage that reduces the output of the power supply excessively when the power supply fails for some reason.
The first backup power automatic switching logic action testing device can send a voltage loss instruction to the first backup power automatic switching logic action testing device in various modes. In some embodiments, the first backup power automatic switching logic operation testing device may transmit the voltage loss instruction through a 4G communication module provided in the device. The first backup power automatic switching logic operation testing device may also transmit the voltage loss instruction through other manners, for example, a 5G communication module, which is not limited by the description herein.
In step 220, the first backup power automatic switching logic operation testing device outputs a first voltage loss.
The logic action of the first remote automatic backup power switching device and the second remote automatic backup power switching device is as follows:
after detecting the first voltage loss voltage, a first remote spare power automatic switching device located at the first substation performs the following actions: 1. the tripping signal is sent to a first circuit breaker located in a first substation, and the first circuit breaker is used for connecting a power supply source of the first substation to a first power supply line for supplying power to all devices in the first substation. The first circuit breaker cuts off a first power supply line after receiving a tripping signal; 2. after the first remote automatic backup switching device detects that the first breaker is in a disconnected state, the power supply source with the fault is confirmed to be cut off, and then a closing instruction is sent to a second remote automatic backup switching device located in a second transformer substation through an optical fiber. And the closing instruction is used for indicating the second remote spare power automatic switching device to start the power supply of the second transformer substation.
Because the speed of the optical fiber transmission instruction is high, the time difference between the time point when the second remote spare power automatic switching device located in the second substation detects the collinear voltage loss voltage between the first substation and the second substation and the time point when the closing instruction is received is small, the second remote spare power automatic switching device can determine that the power supply of the first substation fails according to the closing instruction and the collinear voltage loss voltage, and the power supply of the second substation needs to be put into use, so that the power supply can provide power for each device of the second substation and each device of the first substation.
In some embodiments of the present invention, the method is to test the first remote automatic backup power switching device and the second remote automatic backup power switching device under a simulated condition. In order to avoid that the interval time between the second remote backup automatic switching device detecting the second voltage loss voltage and receiving the closing instruction sent by the first remote backup automatic switching device is too long, and to perform line maintenance according to the logical action of the second remote backup automatic switching device (for example, to perform maintenance on the inlet wire shared between the first substation and the second substation to determine the cause of the fault), it is necessary to synchronize the time point at which the first backup automatic switching logical action test device outputs the first voltage loss voltage and the time point at which the second backup automatic switching logical action test device outputs the second voltage loss voltage, so that the second remote backup automatic switching device can detect the second voltage loss voltage and receive the closing instruction sent by the first remote backup automatic switching device within a short time interval, thereby making the expected logical action.
In some embodiments of the method according to the present invention, the first backup automatic switching logic operation testing device and the second backup automatic switching logic operation testing device transmit the voltage-loss command in a wireless manner, and the transmission time of the voltage-loss command is longer than the transmission time of the switching-on command transmitted between the first remote backup automatic switching device and the second remote backup automatic switching device by using the optical fiber. The delay time may be set based on empirical or actual test data.
In some embodiments, the voltage loss simulation unit of the first backup automatic switching logic action test device outputs a first voltage loss voltage to the voltage acquisition interface of the first remote backup automatic switching device, and the first remote backup automatic switching device sends a trip signal according to the first voltage loss voltage detected by the voltage acquisition interface.
And step 230, when the first automatic backup power switching logic action test device detects a trip signal which is sent by a first remote automatic backup power switching device of the first substation and aims at a first circuit breaker of the first substation, disconnecting a line between a position monitoring interface of the first circuit breaker of the first remote automatic backup power switching device and a direct-current positive power supply of the first substation.
In some embodiments, the first circuit breaker is a circuit breaker in the first substation for connecting or disconnecting a first power supply line from a power supply source for supplying power to the devices in the first substation. The first remote spare power automatic switching device sends a tripping signal according to the first voltage loss voltage. The tripping signal is used for instructing the first circuit breaker to break a first power supply line for supplying power to each device in the first substation.
And after the first spare power automatic switching logic action testing device detects a tripping signal, simulating the disconnection state of the first circuit breaker to the first remote spare power automatic switching device. In some embodiments, the first backup automatic switching logic action test device disconnects a line between the position monitoring interface of the first circuit breaker of the first remote backup automatic switching device and the direct current positive power supply located in the first substation, so that the voltage value detected by the position monitoring interface of the first circuit breaker is 0. Therefore, the first remote spare power automatic switching device can confirm that the first breaker is in the off state, and according to the logic action of the first remote spare power automatic switching device, a closing instruction is sent to the second remote spare power automatic switching device located in the second transformer substation through the optical fiber.
In some embodiments, the first automatic backup power switching logic action test device displays a prompt message for indicating that a tripping signal sent by the first remote automatic backup power switching logic action test device is received. For example, the second backup power automatic switching logic operation testing device may display the prompt message on the liquid crystal display. The operator can clearly know whether the first remote spare power automatic switching device makes correct logic action.
The details of the first backup power automatic switching logic action test device for simulating the open state of the first circuit breaker refer to the relevant contents of fig. 3.
In step 240, after receiving the voltage loss instruction sent by the first backup power automatic switching logic operation testing device, the second backup power automatic switching logic operation testing device outputs a second voltage loss voltage to the second remote backup power automatic switching device.
In some embodiments, the second backup automatic switching logic action test device outputs a second voltage loss after receiving a voltage loss instruction sent by the first backup automatic switching logic action test device, so as to simulate a collinear voltage loss state between the first substation and the second substation to the second remote backup automatic switching device.
In some embodiments, the voltage loss simulation unit of the second backup automatic switching logic action test device outputs a second voltage loss voltage to the voltage acquisition interface of the second remote backup automatic switching device, and the second remote backup automatic switching device sends a switch-on signal according to the second voltage loss voltage detected by the voltage acquisition interface.
And 250, when the second automatic backup power switching logic action test device detects a switching-on signal which is sent by a second remote automatic backup power switching device and aims at a second circuit breaker located in a second transformer substation, switching on a line between a position monitoring interface of the second circuit breaker of the second remote automatic backup power switching device and a direct-current positive power supply located in the second transformer substation.
And when the second remote spare power automatic switching device detects a second voltage loss voltage and a closing instruction sent by the first remote spare power automatic switching device, a closing signal aiming at the second circuit breaker is sent according to the logic action of the second remote spare power automatic switching device.
The second circuit breaker is a circuit breaker of a second power supply line which is used for connecting or disconnecting the power supply to supply power to each device in the second transformer substation. And the closing signal is used for indicating the second circuit breaker to be communicated with a second power supply line.
And when the second spare power automatic switching logic action testing device detects a closing signal, simulating the closing state of a second breaker to a second remote spare power automatic switching device. In some embodiments, the second backup automatic switching logic action test device closes a line between the position monitoring interface of the second circuit breaker of the second remote backup automatic switching device and the direct current positive power supply located in the second substation, so that the voltage value detected by the position monitoring interface of the second circuit breaker is at a high level. Accordingly, the second remote backup automatic switching device confirms that the second circuit breaker is in a closed state, and the power supply source is considered to be put into use.
In some embodiments, the second automatic backup switching logic action testing device displays a prompt message for indicating that a closing signal sent by the second remote automatic backup switching logic action testing device is received. For example, the second backup power automatic switching logic operation testing device may display the prompt message on the liquid crystal display. The operator can clearly know whether the second remote spare power automatic switching device makes correct logic action.
According to some embodiments of the invention, the first backup power automatic switching device logic action test device sends a voltage loss instruction to the second backup power automatic switching device logic action test device, and delays to the first remote backup power automatic switching device to simulate and output the first voltage loss voltage, so that the time for sending the first voltage loss voltage and the second voltage loss voltage by the first backup power automatic switching device logic action test device and the second backup power automatic switching device logic action test device is synchronized, and the working condition field when the power supply of the transformer substation fails is accurately simulated, and thus whether the first remote backup power automatic switching device and the second remote backup power automatic switching device can correctly make logic actions can be accurately detected.
Fig. 3 is a block diagram of a first device for testing the logic operation of the backup power automatic switching device according to a preferred embodiment of the present invention.
As shown in fig. 3, the backup power automatic switching logic operation test apparatus 300 includes: the protection circuit comprises a voltage loss instruction sending unit 310, a first voltage loss simulation unit 320, a trip signal detection unit 330, a breaker open state simulation unit 340 and a first control unit 350.
The voltage loss instruction sending unit 310 is configured to send a voltage loss instruction. The voltage loss command is a command for outputting a voltage loss voltage. In some embodiments, the voltage loss instruction is an instruction that the first backup power automatic switching operation logic test device instructs the second backup power automatic switching operation logic test device to output a second voltage loss voltage.
In some embodiments, the no-voltage instruction transmitting unit 310 may be implemented by a 4G communication module.
The first voltage loss simulation unit 320 is configured to output a first voltage loss voltage to the first remote backup automatic switching device to be tested. In some embodiments, the first no-voltage simulation unit 320 includes a controllable ac air switch and relay protection tester. The input end of the controllable alternating current air switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current air switch is connected with the voltage acquisition interface of the first remote spare power automatic switching device to be tested.
In an initial state, the controllable alternating current air switch is in a connection state, the output voltage of the relay protection tester is output to a voltage acquisition interface of the first remote spare power automatic switching device to be tested, and the first remote spare power automatic switching device to be tested considers that the power supply is in a normal state based on the output voltage of the relay protection tester. When the first no-voltage simulation unit 320 is required to output a no-voltage, the first control unit 350 outputs a low-voltage control signal to disconnect the controllable ac air switch, so as to simulate a no-voltage state.
According to some embodiments of the invention, the controllable alternating current air switch is matched with the relay protection tester for use, the spare power automatic switching device logic action testing device can be automatically controlled to output the voltage loss voltage, the automatic testing of the logic action of the remote spare power automatic switching device is realized, the labor cost is saved, and the error caused by manual operation is avoided.
The trip signal detection unit 330 is used for detecting a trip signal of a first remote spare power automatic switching device to be tested for a first circuit breaker located at a first substation. The trip signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage.
In some embodiments, the trip signal detection unit 330 includes an optocoupler relay. The optical coupling relay is connected with an output port of a tripping signal of the first remote spare power automatic switching device to be tested. When the first remote spare power automatic switching device to be tested sends a tripping signal, a direct current voltage pulse with a positive voltage of 110V to the ground is generated at an output port of the tripping signal, the optical coupling relay converts the pulse into a low-voltage pulse signal with a voltage of 5V to the first control unit 350 after receiving the pulse, and the first control unit 350 confirms that the first remote spare power automatic switching device to be tested sends the tripping signal according to the low-voltage pulse signal.
And the breaker disconnection state simulation unit 340 is used for disconnecting a line between a position monitoring interface of a first breaker of the first remote automatic backup switching device to be tested and a direct-current positive power supply of the first substation.
In some embodiments, the breaker open state simulation unit 340 includes an electromagnetic relay, the electromagnetic relay includes a node pair, a first node of the node pair is connected to the dc positive power supply, and a second node of the node pair is connected to the position monitoring interface of the first breaker of the first remote automatic backup power switching device to be tested. The circuit that breaks between the position monitoring interface of the first circuit breaker of the first distant spare power automatic switching device to be tested and the direct current positive power supply comprises: the first control unit 350 drives the electromagnetic relay, and opens the connection line between the first node and the second node.
The first control unit 350 includes a control chip including, but not limited to: a single chip microcomputer, an ARM processor and the like.
The first spare power automatic switching logic action testing device further comprises a human-computer interaction interface. Human-machine interface may include, but is not limited to: liquid crystal display, button.
In some embodiments, a prompt message that the first automatic backup power switching logic operation testing device has received a trip signal from the first remote automatic backup power switching device during the testing process may be displayed through the liquid crystal display. An operator can clearly know whether the remote spare power automatic switching device correctly makes a logic action through the human-computer interaction interface.
Fig. 4 is a block diagram of a second testing apparatus for testing the logic operation of the backup power automatic switching device according to a preferred embodiment of the present invention.
As shown in fig. 4, the second backup power automatic switching logic operation test apparatus includes: the circuit breaker comprises a voltage loss instruction receiving unit 410, a second voltage loss simulation unit 420, a closing signal detection unit 430 and a circuit breaker closing state simulation unit 440.
The voltage loss instruction receiving unit 410 is configured to receive a voltage loss instruction sent by a first backup power automatic switching logic operation testing apparatus located in a first substation. The voltage loss command is a command for outputting a voltage loss voltage. In some embodiments, the voltage loss instruction is an instruction that the first backup power automatic switching logic operation testing device instructs a second backup power automatic switching logic operation testing device to output a second voltage loss voltage. In some embodiments, the voltage loss instruction receiving unit 410 may be implemented by a 4G communication module.
The second voltage loss simulation unit 420 is configured to output a second voltage loss voltage to a second remote backup automatic switching device to be tested. In some embodiments, the second no-voltage simulation unit 420 includes a controllable ac air switch and relay protection tester. The input end of the controllable alternating current air switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current air switch is connected with the voltage acquisition interface of the second remote spare power automatic switching device to be tested.
The closing signal detection unit 430 is configured to detect a closing signal, which is sent by the second remote backup automatic switching device to be tested and is addressed to a second circuit breaker located in the second substation. And the closing signal is sent by the second remote spare power automatic switching device based on the second voltage loss voltage and a closing instruction sent by the first remote spare power automatic switching device.
In some embodiments, the second backup power automatic switching action logic testing device includes a second control unit 450, and the closing signal detecting unit 430 includes an optocoupler relay. And the optocoupler relay is connected with an output port of a closing signal of the second remote spare power automatic switching device to be tested. When the second remote automatic bus transfer device to be tested sends a closing signal, a direct current voltage pulse with a positive voltage of 110V to the ground is generated at an output port of the closing signal, the optical coupling relay converts the pulse into a low-voltage pulse signal with a voltage of 5V to the second control unit 450 after receiving the pulse, and the second control unit 450 confirms that the second remote automatic bus transfer device to be tested sends the closing signal according to the low-voltage pulse signal.
And a circuit breaker closing state simulation unit 440, configured to close a line between a position monitoring interface of a second circuit breaker of the second remote automatic backup switching device to be tested and a direct current positive power supply of the second substation.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A logic action test method of a remote spare power automatic switching device is characterized by comprising the following steps:
after a first spare power automatic switching logic action testing device located in a first transformer substation sends a voltage loss instruction for indicating the second spare power automatic switching logic action testing device to output a second voltage loss voltage to a second spare power automatic switching logic action testing device located in a second transformer substation, a first voltage loss voltage is output to a first remote spare power automatic switching device located in the first transformer substation;
if the first spare power automatic switching logic action test device detects a tripping signal which is sent by the first remote spare power automatic switching device and aims at a first circuit breaker located in the first transformer substation, disconnecting a line between a position monitoring interface of the first circuit breaker of the first remote spare power automatic switching device and a direct-current positive power supply located in the first transformer substation; the tripping signal is used for indicating the first circuit breaker to disconnect a power supply source of the first substation from a first power supply line for supplying power to each device in the first substation, and the tripping signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage;
after receiving the voltage loss instruction sent by the first spare power automatic switching logic action test device, the second spare power automatic switching logic action test device outputs a second voltage loss voltage to the second remote spare power automatic switching device;
if the second spare power automatic switching logic action testing device detects a switching-on signal which is sent by the second remote spare power automatic switching device and aims at a second circuit breaker located in the second transformer substation, a circuit between a position monitoring interface of the second circuit breaker of the second remote spare power automatic switching device and a direct-current positive power supply located in the second transformer substation is switched on; the switching-on signal is used for indicating the second circuit breaker to be communicated with a power supply source of the second transformer substation to supply power to a second power supply line of each device in the second transformer substation, and the switching-on signal is sent by the second remote automatic bus transfer device based on the second voltage loss voltage and a switching-on instruction sent by the first remote automatic bus transfer device.
2. The method of claim 1, wherein outputting the first voltage loss voltage by the first backup power automatic switching logic action test device comprises: and the voltage loss simulation unit of the first spare power automatic switching logic action test device outputs a first voltage loss voltage to the voltage acquisition interface of the first remote spare power automatic switching device, and the first remote spare power automatic switching device is instructed to send the trip signal according to the first voltage loss voltage detected by the voltage acquisition interface.
3. The method of claim 1, wherein the second backup power automatic switching logic action test device outputting the second voltage loss voltage comprises: and the voltage loss simulation unit of the second spare power automatic switching logic action test device outputs a second voltage loss voltage to the voltage acquisition interface of the second remote spare power automatic switching device, and instructs the second remote spare power automatic switching device to send the switching-on signal according to the second voltage loss voltage detected by the voltage acquisition interface.
4. The method of claim 1, further comprising:
the first spare power automatic switching logic action testing device responds to the detection of the setting operation of the local working mode and sets the working mode of the first spare power automatic switching logic action testing device to the local working mode;
and the second spare power automatic switching logic action test device responds to the detected setting operation of the remote working mode and sets the working mode of the second spare power automatic switching logic action test device to the remote working mode.
5. The method of claim 1, further comprising:
the first spare power automatic switching logic action testing device displays prompt information used for indicating that a tripping signal sent by the first remote spare power automatic switching device is received;
and the second spare power automatic switching logic action testing device displays prompt information for indicating that a closing signal sent by the second remote spare power automatic switching device is received.
6. The utility model provides a first spare power automatic switching logic action testing arrangement which characterized in that, first spare power automatic switching logic action testing arrangement is located first transformer substation, first spare power automatic switching logic action testing arrangement includes:
the voltage loss instruction sending unit is used for sending a voltage loss instruction to a second spare power automatic switching logic action testing device located in a second transformer substation, and the voltage loss instruction is an instruction for indicating the second spare power automatic switching logic action testing device to output a second voltage loss voltage;
the first voltage loss simulation unit is used for outputting a first voltage loss voltage to a first remote spare power automatic switching device to be tested;
the trip signal detection unit is used for detecting a trip signal of the first remote spare power automatic switching device to be tested aiming at a first circuit breaker located in the first substation; the tripping signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage;
and the circuit breaker disconnection state simulation unit is used for disconnecting a line between a position monitoring interface of a first circuit breaker of the first remote spare power automatic switching device to be tested and a direct-current positive power supply of the first transformer substation.
7. The apparatus of claim 6, wherein the first backup power automatic switching logic action test apparatus further comprises a first control unit, the breaker open state simulation unit comprises an electromagnetic relay, the electromagnetic relay comprises a node pair, and a first node of the node pair is connected with a direct current positive power supply; a second node in the node pair is connected with a position monitoring interface of a first circuit breaker of the first remote spare power automatic switching device to be tested;
the circuit for disconnecting the position monitoring interface of the first breaker of the first remote spare power automatic switching device to be tested and the direct current positive power supply of the first transformer substation comprises:
the first control unit drives the electromagnetic relay to disconnect a connection line between the first node and the second node.
8. The apparatus of claim 6, wherein the trip signal detection unit comprises an optocoupler relay.
9. The apparatus of claim 6, wherein the first no-voltage simulation unit comprises a controllable AC air switch and relay protection tester; the input end of the controllable alternating current air switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current air switch is connected with the voltage acquisition interface of the first remote spare power automatic switching device.
10. The second spare power automatic switching logic action testing device is characterized by being located in a second transformer substation and comprising:
the voltage loss instruction receiving unit is used for receiving a voltage loss instruction sent by a first spare power automatic switching logic action testing device located in a first transformer substation, and the voltage loss instruction is an instruction of the first spare power automatic switching logic action testing device for indicating a second spare power automatic switching logic action testing device to output a second voltage loss voltage;
the second voltage loss simulation unit is used for outputting a second voltage loss voltage to a second remote spare power automatic switching device to be tested;
the switching-on signal detection unit is used for detecting a switching-on signal which is sent by the second remote spare power automatic switching device to be tested and aims at a second circuit breaker located in the second transformer substation; the switching-on signal is sent by the second remote spare power automatic switching device based on the second voltage loss voltage and a switching-on instruction sent by the first remote spare power automatic switching device.
And the circuit breaker closing state simulation unit is used for closing a line between a position monitoring interface of a second circuit breaker of the second remote spare power automatic switching device to be tested and a direct-current positive power supply of the second transformer substation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114900908A (en) * | 2022-05-27 | 2022-08-12 | 湖南省湘电试验研究院有限公司 | 5G communication method, system and medium for remote spare power automatic switching device of transformer substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114900908A (en) * | 2022-05-27 | 2022-08-12 | 湖南省湘电试验研究院有限公司 | 5G communication method, system and medium for remote spare power automatic switching device of transformer substation |
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