An operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network

Abstract

The present application discloses an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network, providing a primary signal output circuit and a secondary signal output circuit corresponding to the primary circuit breaker and the secondary feeder terminal of the intelligent switch to be measured respectively. These two share a program-controlled source, and the industrial control computer realizes the output channel of the program-controlled source through a control signal switcher. After connecting the primary circuit breaker and / or the secondary feeder terminal of the intelligent switch to be measured, corresponding test signals can be provided to it, realizing the intensive and portable operation and maintenance of the intelligent switch to be measured.

Description

Technical Field

[0001] The present application relates to the technical field of distribution networks, and particularly to an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network. Background Art

[0002] In recent years, with the continuous advancement of the "new infrastructure" strategic deployment and the inherent need to build an energy Internet, power grid companies have vigorously accelerated the construction of digital distribution networks, accelerated the intelligent upgrade of distribution network equipment, and applied a large number of intelligent devices to distribution networks. In the overhead lines of distribution networks, pole-mounted circuit breakers with spring operating mechanisms are widely used. After a large number of digital upgraded "intelligent switches" formed by being combined with distribution switch monitoring terminals (Feeder Terminal Unit, FTU, hereinafter referred to as "feeder terminals") are put into operation, their operation and maintenance requirements are extensive, but the existing operation and maintenance devices are difficult to meet the intelligent requirements after digital upgrade.

[0003] Providing an operation and maintenance device suitable for this intelligent switch is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of the present application is to provide an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network, which is used to realize the operation and maintenance of the intelligent switch.

[0005] To solve the above technical problems, the present application provides an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network, including: an industrial control computer, a programmable power source, a signal switch, a primary signal output circuit, and a secondary signal output circuit;

[0006] Wherein, the first end of the industrial control computer is connected to the control end of the programmable power source, the second end of the industrial control computer is connected to the control end of the signal switch, the input ends of the primary signal output circuit and the secondary signal output circuit are respectively connected to the output ends of the programmable power source, the output end of the primary signal output circuit is connected to the control end of the primary circuit breaker of the intelligent switch to be measured, and the output end of the secondary signal output circuit is connected to the breaker signal acquisition end of the secondary feeder terminal of the intelligent switch to be measured;

[0007] The signal switch is used to switch and connect the output end of the programmable power source to the input end of the primary signal output circuit, or the output end of the programmable power source to the input end of the secondary signal output circuit;

[0008] The industrial control computer is used to control the programmable power source to output a test signal corresponding to the object to be measured after controlling the signal switch to connect the signal output end of the programmable power source to the signal input end of the object to be measured;

[0009] The object under test is the primary circuit breaker or the secondary feeder terminal.

[0010] Optionally, the primary signal output circuit specifically includes: a tripping control circuit, a closing control circuit, and an energy storage circuit;

[0011] Among them, the output end of the tripping control circuit is connected to the tripping control end of the spring operating mechanism of the primary circuit breaker, the output end of the closing control circuit is connected to the closing control end of the spring operating mechanism, and the output end of the energy storage circuit is connected to the driving end of the energy storage motor of the primary circuit breaker.

[0012] Optionally, it further includes a digital quantity signal acquisition circuit disposed between the signal feedback end of the primary circuit breaker and the third terminal of the industrial control computer;

[0013] Correspondingly, the industrial control computer is further configured to determine the test result of the primary circuit breaker according to the output signal of the primary signal output circuit and the signal acquired by the digital quantity signal acquisition circuit.

[0014] Optionally, the secondary signal output circuit specifically includes: a remote measurement signal output loop and a remote signaling signal output loop;

[0015] Among them, the output end of the remote measurement signal output loop is used to connect to the analog quantity signal acquisition end of the secondary feeder terminal; the industrial control computer is further configured to control the signal switch to connect the output end of the program-controlled power source and the input end of the remote signaling signal output loop, and then send a remote measurement instruction to the program-controlled power source to make the program-controlled power source output a voltage analog quantity signal and / or a current analog quantity signal;

[0016] The remote signaling signal output loop includes a digital quantity generator, the control end of the digital quantity generator is connected to the fourth terminal of the industrial control computer, and the output end of the digital quantity generator is used to connect to the breaker position signal acquisition end of the secondary feeder terminal; the industrial control computer is further configured to control the signal switch to connect the output end of the program-controlled power source and the input end of the digital quantity generator, and then send a remote signaling change instruction to the digital quantity generator to make the digital quantity generator send a remote signaling signal to the secondary feeder terminal.

[0017] Optionally, it further includes a communication connector with the communication protocol function of the secondary feeder terminal disposed between the fifth terminal of the industrial control computer and the communication end of the secondary feeder terminal, and an analog circuit breaker disposed between the remote control end of the secondary feeder terminal and the sixth terminal of the industrial control computer;

[0018] The industrial control computer is further configured to, after controlling the secondary feeder terminal to send a remote control instruction to the analog circuit breaker through the communication controller, collect a remote signal change position signal from the secondary feeder terminal, so as to form an operation and maintenance result of the remote control function of the secondary feeder terminal according to the remote signal change position signal and the remote control instruction.

[0019] Optionally, it further includes a standard meter disposed between the output end of the remote measurement signal output loop and the seventh terminal of the industrial control computer;

[0020] The industrial control computer is further configured to obtain the remote measurement signals collected by the secondary feeder terminal through the communication connector, and form an operation and maintenance result of the remote measurement function of the secondary feeder terminal according to the remote measurement signals collected by the standard meter and the remote measurement signals collected by the secondary feeder terminal.

[0021] Optionally, the industrial control computer is further configured to, after sending a remote signal change position instruction to the switch quantity generator to enable the switch quantity generator to send a remote signal to the secondary feeder terminal, obtain the remote signal acquisition result of the secondary feeder terminal through the communication connector, and form an operation and maintenance result of the remote signal function of the secondary feeder terminal according to the remote signal change position instruction and the remote signal acquisition result.

[0022] Optionally, the remote measurement signal output loop specifically includes: a small-signal analog quantity signal output loop and an electromagnetic secondary signal output loop;

[0023] Wherein, the electromagnetic secondary signal output loop includes a signal conversion circuit for converting the small-signal analog quantity signal output by the program control source into an electromagnetic secondary signal.

[0024] Optionally, it further includes: an aviation cable connector disposed at the output end of the primary signal output circuit and an aviation cable connector disposed at the output end of the secondary signal output circuit.

[0025] Optionally, it further includes a terminal block for carrying each of the aviation cable connectors.

[0026] The operation and maintenance device for the intelligent switch of the distribution network spring operating mechanism provided by the present application provides a primary signal output circuit and a secondary signal output circuit corresponding to the primary circuit breaker and the secondary feeder terminal of the measured intelligent switch respectively. The two share a program control source, and the industrial control computer realizes the output channel of the program control source through the control signal switcher. After connecting the primary circuit breaker and / or the secondary feeder terminal of the measured intelligent switch, it can provide corresponding test signals, realizing intensive and portable operation and maintenance of the measured intelligent switch. Description of the Drawings

[0027] To more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network provided by an embodiment of the present application;

[0029] Among them, 101 is an industrial control computer, 102 is a programmable power source, 103 is a signal switch, 104 is a digital signal generator, 105 is a digital signal acquisition circuit, 106 is a standard meter, 107 is an analog circuit breaker, and 108 is a communication connector. Specific embodiments

[0030] The core of the present application is to provide an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network, which can be compatible with the portable operation and maintenance of the primary circuit breaker and the secondary feeder terminal of the intelligent switch, realizes the intensification and closed-loop project of the intelligent switch operation and maintenance, and improves the operation and maintenance efficiency.

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0032] Figure 1 It is a schematic structural diagram of an operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network provided by an embodiment of the present application.

[0033] As Figure 1 shown, the operation and maintenance device for an intelligent switch of a spring operating mechanism in a distribution network provided by an embodiment of the present application includes: an industrial control computer 101, a programmable power source 102, a signal switch 103, a primary signal output circuit, and a secondary signal output circuit;

[0034] Among them, the first end of the industrial control computer 101 is connected to the control end of the programmable power source 102, the second end of the industrial control computer 101 is connected to the control end of the signal switch 103, the input ends of the primary signal output circuit and the secondary signal output circuit are respectively connected to the output ends of the programmable power source 102, the output end of the primary signal output circuit is connected to the control end of the primary circuit breaker of the intelligent switch to be measured, and the output end of the secondary signal output circuit is connected to the breaker signal acquisition end of the secondary feeder terminal of the intelligent switch to be measured;

[0035] The signal switch 103 is used to switch and connect the output end of the program-controlled source 102 to the input end of the primary signal output circuit, or the output end of the program-controlled source 102 to the input end of the secondary signal output circuit;

[0036] The industrial control computer 101 is used to control the program-controlled source 102 to output a test signal corresponding to the device under test after the control signal switch 103 connects the signal output end of the program-controlled source 102 to the signal input end of the device under test;

[0037] The device under test is a primary circuit breaker or a secondary feeder terminal.

[0038] In the embodiment of the present application, the primary circuit breaker and the secondary feeder terminal of the intelligent switch, which are the objects of operation and maintenance, are connected by an aviation cable. The intelligent switch sends telemetry signals of voltage and current and tele-signals such as whether the switch position is energized to the secondary feeder terminal through the aviation cable, and the secondary feeder terminal sends a remote control command through the aviation cable and drives the primary circuit breaker to trip and close. Using the traditional operation and maintenance method, technicians need to use different devices to perform operation and maintenance on the primary circuit breaker and the secondary feeder terminal respectively, which is very inconvenient.

[0039] In view of this, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided by the present application integrates the industrial control computer 101, the program-controlled source 102, the signal switch 103, the primary signal output circuit and the secondary signal output circuit. The primary signal output circuit faces the primary circuit breaker, and the secondary signal output circuit faces the secondary feeder terminal. The primary signal output circuit and the secondary signal output circuit share a program-controlled source 102, and the industrial control computer 101 controls the signal switch 103 to switch the program-controlled source 102 to output test signals to different signal output circuits, so as to realize the intensive operation and maintenance of the primary circuit breaker and the secondary feeder terminal of the intelligent switch under test.

[0040] Among them, both between the first end of the industrial control computer 101 and the control end of the program-controlled source 102 and between the second end of the industrial control computer 101 and the control end of the signal switch 103 can be communicatively connected by an RS485 bus, so that based on RS485 communication, the industrial control computer 101 sends control commands to the program-controlled source 102 and the signal switch 103.

[0041] For the convenience of testing, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided by the embodiment of the present application may further include: an aviation cable connector provided at the output end of the primary signal output circuit and an aviation cable connector provided at the output end of the secondary signal output circuit, so as to directly connect to the corresponding interfaces of the intelligent switch under test through the aviation cable connectors.

[0042] The operation and maintenance of the primary circuit breaker of the intelligent switch usually includes the operation and maintenance of the opening / closing and energy storage motors. Therefore, on the basis of the above embodiments, in the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided in the embodiments of the present application, the primary signal output circuit specifically includes: an opening control circuit, a closing control circuit, and an energy storage circuit;

[0043] Among them, the output end of the opening control circuit is connected to the opening control end of the spring operating mechanism of the primary circuit breaker, the output end of the closing control circuit is connected to the closing control end of the spring operating mechanism, and the output end of the energy storage circuit is connected to the driving end of the energy storage motor of the primary circuit breaker.

[0044] When performing the operation and maintenance of the remote control function of the primary circuit breaker of the intelligent switch to be measured, connect the opening control end of the spring operating mechanism of the primary circuit breaker to the output end of the opening control circuit. The industrial control computer 101 sends a remote control instruction to the signal switch 103 to make the signal switch 103 connect the output end of the program-controlled source 102 and the opening control end of the spring operating mechanism of the primary circuit breaker. The industrial control computer 101 controls the program-controlled source 102 to output the rated control signal of the spring operating mechanism of the primary circuit breaker. By obtaining the opening remote signal status of the spring operating mechanism of the primary circuit breaker, the operation and maintenance result is formed according to whether the spring operating mechanism of the primary circuit breaker successfully executes the opening command. Similarly, the industrial control computer 101 sends a remote control instruction to the signal switch 103 respectively to make the signal switch 103 connect the output end of the program-controlled source 102 and the closing control end of the spring operating mechanism of the primary circuit breaker. The industrial control computer 101 controls the program-controlled source 102 to output the rated control signal of the spring operating mechanism of the primary circuit breaker. By obtaining the closing remote signal status of the spring operating mechanism of the primary circuit breaker, the operation and maintenance result is formed according to whether the spring operating mechanism of the primary circuit breaker successfully executes the closing command.

[0045] When performing the operation and maintenance of the energy storage function of the primary circuit breaker of the intelligent switch to be measured, connect the driving end of the energy storage motor of the primary circuit breaker to the output end of the energy storage circuit. The industrial control computer 101 sends a remote control instruction to the signal switch 103 to make the signal switch 103 connect the output end of the program-controlled source 102 and the driving end of the energy storage motor of the primary circuit breaker. The industrial control computer 101 controls the program-controlled source 102 to output the rated driving signal of the energy storage motor of the primary circuit breaker, and the operation and maintenance result is formed by obtaining the energy storage remote signal status of the energy storage motor of the primary circuit breaker.

[0046] Further, to improve the automation level of operation and maintenance, as Figure 1 shown, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided in the embodiments of the present application may further include a switch quantity signal acquisition circuit 105 provided between the signal feedback end of the primary circuit breaker and the third end of the industrial control computer 101;

[0047] Correspondingly, the industrial control computer 101 is also used to determine the test result of the primary circuit breaker according to the output signal of the primary signal output circuit and the signal collected by the digital signal acquisition circuit 105.

[0048] For example, when performing the operation and maintenance of the remote control function of the primary circuit breaker of the intelligent switch under test, the digital signal acquisition circuit 105 is pre-connected to the feedback terminal of the opening / closing position signal of the primary circuit breaker and the third terminal of the industrial control computer 101. After the industrial control computer 101 controls the program-controlled power source 102 to output the rated control signal of the spring operating mechanism of the primary circuit breaker, the industrial control computer 101 reads the opening / closing state of the spring operating mechanism of the primary circuit breaker through the digital signal acquisition circuit 105. When performing the operation and maintenance of the energy storage function of the primary circuit breaker of the intelligent switch under test, the digital signal acquisition circuit 105 is pre-connected to the feedback terminal of the energy storage telemetry status signal of the primary circuit breaker and the third terminal of the industrial control computer 101. After the industrial control computer 101 controls the program-controlled power source 102 to output the rated drive signal of the energy storage motor of the primary circuit breaker, the industrial control computer 101 reads the energy storage telemetry status of the energy storage motor of the primary circuit breaker through the digital signal acquisition circuit 105.

[0049] The operation and maintenance content of the secondary feeder terminal of the intelligent switch usually includes the operation and maintenance of the telemetry function, the tele-signaling function, and the remote control function. Among them, telemetry refers to collecting and transmitting operation parameters, including various electrical quantities (such as voltage, current, power, etc. on the line) and load flow, etc. Tele-signaling refers to collecting and transmitting various protection and digital signals. Remote control refers to receiving and executing remote control commands, mainly opening and closing, and remotely controlling some remote switch control devices.

[0050] For the telemetry function and the tele-signaling function of the secondary feeder terminal, in the operation and maintenance device for the intelligent switch of the distribution network spring operating mechanism provided in the embodiments of the present application, the secondary signal output circuit may specifically include: a telemetry signal output loop and a tele-signaling signal output loop;

[0051] Among them, the output end of the telemetry signal output loop is used to connect to the analog signal acquisition end of the secondary feeder terminal; the industrial control computer 101 is also used to control the signal switch 103 to connect the output end of the program-controlled power source 102 and the input end of the tele-signaling signal output loop, and then send a telemetry command to the program-controlled power source 102 to make the program-controlled power source 102 output a voltage analog signal and / or a current analog signal;

[0052] The remote signal output circuit includes a digital quantity generator 104. The control end of the digital quantity generator 104 is connected to the fourth end of the industrial control computer 101, and the output end of the digital quantity generator 104 is used to connect to the breaker position signal acquisition end of the secondary feeder terminal. The industrial control computer 101 is further configured to control the signal switch 103 to connect the output end of the program control source 102 and the input end of the digital quantity generator 104, and then send a remote signal change instruction to the digital quantity generator 104 so that the digital quantity generator 104 sends a remote signal to the secondary feeder terminal.

[0053] The fourth end of the industrial control computer 101 and the control end of the digital quantity generator 104 can also be communicatively connected through an RS485 bus.

[0054] When performing the operation and maintenance of the remote measurement function of the secondary feeder terminal of the intelligent switch under test, connect the analog signal acquisition end of the secondary feeder terminal to the output end of the remote measurement signal output circuit. The industrial control computer 101 sends a remote measurement instruction to the signal switch 103 so that the signal switch 103 connects the output end of the program control source 102 and the analog signal acquisition end of the secondary feeder terminal. The industrial control computer 101 controls the program control source 102 to output a preset analog signal, which can be a voltage analog signal or a current analog signal. By comparing the remote measurement signal collected by the secondary feeder terminal with the output analog signal, the operation and maintenance result of the remote measurement function of the secondary feeder terminal can be obtained. If the ratio of the error between the two to the output analog signal is greater than the first threshold, it is considered that the remote measurement function of the secondary feeder terminal is unqualified, otherwise it is qualified.

[0055] Specifically, the secondary feeder terminal has two forms: an electromagnetic secondary feeder terminal and an electronic secondary feeder terminal, and their remote measurement signals are electromagnetic secondary signals and small-signal analog signals respectively. Usually, the signal output by the program control source 102 is a small-signal analog signal. Therefore, in the operation and maintenance device for the intelligent switch of the distribution network spring operating mechanism provided in the embodiments of the present application, the remote measurement signal output circuit specifically includes: a small-signal analog signal output circuit and an electromagnetic secondary signal output circuit; wherein, the electromagnetic secondary signal output circuit includes a signal conversion circuit for converting the small-signal analog signal output by the program control source 102 into an electromagnetic secondary signal. For the electronic secondary feeder terminal, the signal switch 103 can directly output the rated small-signal analog signal output by the program control source 102 through the small-signal analog signal output circuit. For the electromagnetic secondary feeder terminal, the signal switch 103 switches the rated small-signal analog signal output by the program control source 102 to the signal conversion circuit, converts the small-signal analog signal into an electromagnetic secondary signal through power amplification, and then outputs it through the electromagnetic secondary signal output circuit.

[0056] When performing the operation and maintenance of the remote signaling function of the secondary feeder terminal of the intelligent switch under test, connect the breaker position signal acquisition end of the secondary feeder terminal to the output end of the remote signaling signal output loop (i.e., the output end of the switch quantity generator 104). The industrial control computer 101 issues a remote signaling instruction to enable the signal switch 103 to connect the output end of the program-controlled source 102 and the breaker position signal acquisition end of the secondary feeder terminal. The industrial control computer 101 controls the switch quantity generator 104 to execute the remote signaling change command, so that the switch quantity generator 104 outputs a switch quantity signal to the breaker position signal acquisition end of the secondary feeder terminal. By comparing the remote signaling change command with the remote signaling signal collected by the secondary feeder terminal, the operation and maintenance result of the remote signaling function of the secondary feeder terminal is obtained. If the ratio of the error between the two to the standard value of the remote signaling change command is greater than the second threshold, it is considered that the remote signaling function of the secondary feeder terminal is unqualified, otherwise it is qualified.

[0057] Specifically, when performing the operation and maintenance of the remote signaling function of the secondary feeder terminal, the rated signal output by the program-controlled source 102 is a DC signal. After the signal switch 103 switches the output signal of the program-controlled source 102 to the remote signaling signal output loop, the program-controlled source 102 switches the output to the remote signaling power signal required by the secondary feeder terminal according to the remote signaling instruction of the industrial control computer 101 and gives it to the input end of the switch quantity generator 104.

[0058] To implement the test of the remote control function of the secondary feeder terminal, as Figure 1 shown, the operation and maintenance device for the intelligent switch of the distribution network spring operating mechanism provided by the embodiment of the present application may further include a communication connector 108 with the communication protocol function of the secondary feeder terminal, which is arranged between the fifth end of the industrial control computer 101 and the communication end of the secondary feeder terminal, and an analog circuit breaker 107 arranged between the remote control end of the secondary feeder terminal and the sixth end of the industrial control computer 101;

[0059] The industrial control computer 101 is further configured to, after controlling the secondary feeder terminal to send a remote control instruction to the analog circuit breaker 107 through the communication controller, collect the remote signaling change signal from the secondary feeder terminal, so as to form the operation and maintenance result of the remote control function of the secondary feeder terminal according to the remote signaling change signal and the remote control instruction.

[0060] Among them, the communication connector 108 can be connected to the fifth end of the industrial control computer 101 through a network port. Based on the communication connector 108, the industrial control computer 101 can read the relevant information of the secondary feeder terminal and send test commands to the secondary feeder terminal through the standard protocol of the secondary feeder terminal.

[0061] When performing remote control function operation and maintenance on the secondary feeder terminal of the intelligent switch under test, connect the remote control end of the secondary feeder terminal to the input end of the analog circuit breaker 107, connect the position signal feedback end of the analog circuit breaker 107 to the circuit breaker position signal acquisition end of the secondary feeder terminal, and connect the communication end of the secondary feeder terminal to the communication connector 108. The industrial control computer 101 issues a remote control instruction to the secondary feeder terminal in the form of a communication protocol through the communication connector 108, so that the secondary feeder terminal issues a remote control command to the analog circuit breaker 107. The analog circuit breaker 107 feeds back the corresponding digital signal (closed position, open position) to the industrial control computer 101 according to the type of remote control command (control closing, control opening) of the secondary feeder terminal. At the same time, the analog circuit breaker 107 returns a remote signal change signal to the circuit breaker position signal acquisition end of the secondary feeder terminal. The industrial control computer 101 can retrieve the remote signal change in the form of a communication protocol from the secondary feeder terminal through the communication connector 108, compare it with the issued remote control instruction, and determine the operation and maintenance result of the remote control function of the secondary feeder terminal according to the comparison result.

[0062] Based on the communication connector 108, the automation level of the remote measurement function operation and maintenance and the remote signal function operation and maintenance of the secondary feeder terminal can be further improved. The industrial control computer 101 can implement command issuance and information retrieval with the secondary feeder terminal based on the communication connector 108, thereby realizing a closed-loop project for the operation and maintenance of the intelligent switch under test. Specifically, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided in the embodiment of the present application may further include a standard meter 106 provided between the output end of the remote measurement signal output loop and the seventh end of the industrial control computer 101;

[0063] The industrial control computer 101 is further configured to obtain the remote measurement signal collected by the secondary feeder terminal through the communication connector 108, and form the operation and maintenance result of the remote measurement function of the secondary feeder terminal according to the remote measurement signal collected by the standard meter 106 and the remote measurement signal collected by the secondary feeder terminal.

[0064] Among them, the standard meter 106 can be connected to the seventh end of the industrial control computer 101 through a network port.

[0065] When performing the operation and maintenance of the remote measurement function of the secondary feeder terminal of the intelligent switch under test, after the industrial control computer 101 controls the program-controlled source 102 to output a preset analog signal, it obtains the remote measurement signal collected by the secondary feeder terminal through the communication connector 108, so as to form the operation and maintenance result of the remote measurement function of the secondary feeder terminal according to the remote measurement signal collected by the standard meter 106 and the remote measurement signal collected by the secondary feeder terminal.

[0066] The industrial control computer 101 can also be configured to, after sending a remote signal change instruction to the digital signal generator 104 to make the digital signal generator 104 send a remote signal to the secondary feeder terminal, obtain the remote signal acquisition result of the secondary feeder terminal through the communication connector 108, and form the operation and maintenance result of the remote signal function of the secondary feeder terminal according to the remote signal change instruction and the remote signal acquisition result.

[0067] For the convenience of testing, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided by the embodiment of the present application may further include: an aviation cable connector provided at the input end of the digital signal acquisition circuit 105, an aviation cable connector provided at the input end of the analog circuit breaker 107, and an aviation cable connector provided at the position signal feedback end of the analog circuit breaker 107.

[0068] For further convenience of implementation, the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided by the embodiment of the present application may further include a terminal block for carrying each aviation cable connector, so as to connect all the pins of the aviation cable connector to independent jacks.

[0069] As Figure 1 shown, a preferred implementation of the operation and maintenance device for the intelligent switch of the spring operating mechanism in the distribution network provided by the embodiment of the present application may include the industrial control computer 101, the programmable power source 102, the signal switch 103, the primary signal output circuit (including the opening control loop, the closing control loop, and the energy storage loop), the secondary signal output circuit (including the remote measurement signal output loop and the remote signaling signal output loop), the communication connector 108, the analog circuit breaker 107, the standard meter 106, the aviation cable connector, the terminal block, and the connection relationships of each part disclosed in the above embodiments.

[0070] On this basis, an operation and maintenance script can be deployed in the industrial control computer 101 in advance, so that when the industrial control computer 101 receives an input operation and maintenance command, it can identify the operation and maintenance items of the intelligent switch to be tested, automatically control the switching of the signal switch 103 and the outputs of the programmable power source 102 and the digital signal generator 104, and automatically establish a communication connection with the secondary feeder terminal of the intelligent switch to be tested through the communication connector 108 for information collection or command issuance, and obtain the operation and maintenance result according to the test result analysis method corresponding to each operation and maintenance item.

[0071] Among them, the operation and maintenance items may include the opening / closing function operation and maintenance of the primary circuit breaker, the energy storage function operation and maintenance of the primary circuit breaker, the remote measurement function operation and maintenance of the secondary feeder terminal, the remote signaling function operation and maintenance of the secondary feeder terminal, and the remote control function operation and maintenance of the secondary feeder terminal. The formation method of the operation and maintenance result may refer to the above embodiments and will not be elaborated here.

[0072] The above has introduced in detail an operation and maintenance device for an intelligent switch of a distribution network spring operating mechanism. The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0073] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

Claims

1. An operation and maintenance device for an intelligent switch of a distribution network spring operating mechanism, characterized in that Including: An industrial control computer, a programmable power source, a signal switcher, a primary signal output circuit, and a secondary signal output circuit; Among them, the first end of the industrial control computer is connected to the control end of the programmable power source, the second end of the industrial control computer is connected to the control end of the signal switcher, the input ends of the primary signal output circuit and the secondary signal output circuit are respectively connected to the output ends of the programmable power source, the output end of the primary signal output circuit is connected to the control end of the primary circuit breaker of the intelligent switch under test, and the output end of the secondary signal output circuit is connected to the breaker signal acquisition end of the secondary feeder terminal of the intelligent switch under test; The signal switcher is used to switch and connect the output end of the programmable power source to the input end of the primary signal output circuit, or the output end of the programmable power source to the input end of the secondary signal output circuit; The industrial control computer is used to control the programmable power source to output a test signal corresponding to the object under test after controlling the signal switcher to connect the signal output end of the programmable power source to the signal input end of the object under test; The object under test is a primary circuit breaker or a secondary feeder terminal; The secondary signal output circuit specifically includes: a telemetry signal output loop and a telecontrol signal output loop; Among them, the output end of the telemetry signal output loop is used to connect to the analog signal acquisition end of the secondary feeder terminal; the industrial control computer is also used to control the signal switcher to connect the output end of the programmable power source and the input end of the telemetry signal output loop, and then send a telemetry instruction to the programmable power source to make the programmable power source output a voltage analog signal and / or a current analog signal, read the telemetry signal collected by the secondary feeder terminal and compare it with the output analog signal. If the ratio of the error between the two to the output analog signal is greater than the first threshold, it is considered that the telemetry function of the secondary feeder terminal is unqualified, otherwise it is qualified; The telecontrol signal output loop includes a switch quantity generator, the control end of the switch quantity generator is connected to the fourth end of the industrial control computer, and the output end of the switch quantity generator is used to connect to the breaker position signal acquisition end of the secondary feeder terminal; the industrial control computer is also used to control the signal switcher to connect the output end of the programmable power source and the input end of the switch quantity generator, and then send a telecontrol signal change instruction to the switch quantity generator to make the switch quantity generator send a telecontrol signal to the secondary feeder terminal, and compare the telecontrol signal change instruction with the telecontrol signal collected by the secondary feeder terminal. If the ratio of the error between the two to the standard value of the telecontrol signal change instruction is greater than the second threshold, it is considered that the telecontrol function of the secondary feeder terminal is unqualified, otherwise it is qualified; The telemetry signal output loop specifically includes: a small signal analog signal output loop and an electromagnetic secondary signal output loop; Among them, the electromagnetic secondary signal output loop includes a signal conversion circuit for converting the small signal analog signal output by the programmable power source into an electromagnetic secondary signal.

2. The operation and maintenance device according to claim 1, wherein The primary signal output circuit specifically includes: a tripping control loop, a closing control loop, and an energy storage loop; Among them, the output end of the tripping control loop is connected to the tripping control end of the spring operating mechanism of the primary circuit breaker, the output end of the closing control loop is connected to the closing control end of the spring operating mechanism, and the output end of the energy storage loop is connected to the driving end of the energy storage motor of the primary circuit breaker.

3. The operation and maintenance device according to claim 1, wherein It further includes a digital quantity signal acquisition circuit disposed between the signal feedback terminal of the primary circuit breaker and the third terminal of the industrial control computer; Correspondingly, the industrial control computer is further configured to determine the test result of the primary circuit breaker according to the output signal of the primary signal output circuit and the signal acquired by the digital quantity signal acquisition circuit.

4. The operation and maintenance device according to claim 1, wherein It further includes a communication connector with the communication protocol function of the secondary feeder terminal disposed between the fifth terminal of the industrial control computer and the communication terminal of the secondary feeder terminal, and an analog circuit breaker disposed between the remote control terminal of the secondary feeder terminal and the sixth terminal of the industrial control computer; After the industrial control computer controls the secondary feeder terminal to send a remote control instruction to the analog circuit breaker through the communication connector, the industrial control computer is further configured to collect the remote signal change signal from the secondary feeder terminal, so as to form the operation and maintenance result of the remote control function of the secondary feeder terminal according to the remote signal change signal and the remote control instruction.

5. The operation and maintenance device according to claim 4, wherein It further includes a standard meter disposed between the output terminal of the remote measurement signal output loop and the seventh terminal of the industrial control computer; The industrial control computer is further configured to obtain the remote measurement signal collected by the secondary feeder terminal through the communication connector, and form the operation and maintenance result of the remote measurement function of the secondary feeder terminal according to the remote measurement signal collected by the standard meter and the remote measurement signal collected by the secondary feeder terminal.

6. The operation and maintenance device according to claim 4, wherein After the industrial control computer sends a remote signal change instruction to the digital quantity generator to enable the digital quantity generator to send a remote signal to the secondary feeder terminal, the industrial control computer is further configured to obtain the remote signal acquisition result of the secondary feeder terminal through the communication connector, and form the operation and maintenance result of the remote signal function of the secondary feeder terminal according to the remote signal change instruction and the remote signal acquisition result.

7. The operation and maintenance device according to claim 1, wherein It further includes: An aviation cable connector disposed at the output terminal of the primary signal output circuit and an aviation cable connector disposed at the output terminal of the secondary signal output circuit.

8. The operation and maintenance device according to claim 7, wherein It further includes a terminal block for carrying each of the aviation cable connectors.

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