CN113589043A - Primary-secondary fusion and deep fusion power distribution equipment detection system and method - Google Patents
Primary-secondary fusion and deep fusion power distribution equipment detection system and method Download PDFInfo
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Abstract
The invention provides a detection system and a detection method for primary and secondary fusion and deep fusion power distribution equipment. Compared with the prior art, the invention has the beneficial effects that: the secondary terminal test system, the primary mutual inductor test system and the boosting and current rising system are relatively independent, are connected in a communication mode and are uniformly coordinated and controlled by the control system; the invention can independently complete terminal test and mutual inductor test, and complete a set of tests for one time and two times, and the signal switching device can realize that the wiring is not needed to be changed in the test process, and all test items can be automatically completed by the wiring for one time; no strong current accident exists among the four subsystems, so that strong current and weak current isolation of the whole system is realized, and safety is enhanced.
Description
Technical Field
The invention relates to the technical field of power distribution equipment detection, in particular to a primary and secondary fusion and deep fusion power distribution equipment detection system and method.
Background
The traditional power distribution switch is separated in development and design and experimental verification, primary and secondary equipment interfaces of different manufacturers are not matched, and the compatibility, expansibility and interchangeability are poor. The reasons of the faults of the primary and secondary equipment of the power distribution switchgear are difficult to be determined after the faults occur in the debugging and operation processes, so that the primary and secondary equipment manufacturers generate responsibility disputes, the equipment operation and maintenance difficulty is high, and the on-site defect elimination is difficult.
In recent years, as national grid companies implement primary and secondary power distribution synchronous planning, synchronous design and synchronous construction, distribution network equipment is applied to the field in a primary and secondary overall design, mutual integration and overall bidding mode, and rapid development of a primary and secondary power distribution integration technology is promoted. The first and second integration technologies of the distribution network improve the operation level, operation and maintenance quality and efficiency of the distribution equipment by improving the standardization and integration level of the first and second distribution equipment. The distribution network primary and secondary fusion technology is developed to the equipment fusion stage at present, and the small-signal electronic voltage current transformer is deeply fused with the switch equipment, so that the miniaturization and integration of the switch are realized.
The primary and secondary fusion power distribution equipment uses an electromagnetic transformer, the secondary deep fusion equipment uses an electronic transformer, and for the two, the technical performance of the equipment must be detected to be qualified before use, and particularly, the accuracy is particularly important because electronic small signals are easy to interfere. At present, a detection system of a primary and secondary fusion device generally tests an electromagnetic transformer and corresponding signals, and therefore, a primary and secondary fusion and deep fusion detection system compatible with signals of the electromagnetic transformer and the electronic transformer is urgently needed to detect the primary and secondary fusion and deep fusion power distribution device.
Disclosure of Invention
In order to solve the problems, the invention discloses a primary-secondary fusion and deep fusion power distribution equipment detection system and a method, which realize primary, secondary and complete detection on power distribution equipment adopting an electromagnetic transformer and an electronic transformer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a primary and secondary fusion and depth fusion power distribution equipment detection system is characterized by comprising a secondary terminal detection system, a primary mutual inductor detection system, a boosting and current rising system and a control system; the secondary terminal test system comprises a terminal tester and a secondary signal switching device; the secondary signal switching device is provided with three signal access channels which are respectively a terminal tester channel, a second terminal channel and a second switch channel, and the secondary signal switching device has a signal channel switching function and can establish any signal path among the three signal access channels of the secondary signal switching device; the input and output signals of the terminal tester are all accessed to the terminal tester channel of the secondary signal switching device; the primary mutual inductor detection system comprises a mutual inductor tester, an electric energy meter calibrator, a standard load box and a primary signal switching device; the electric energy meter calibrator has the function of verifying the line loss calculation of the power distribution terminal to be tested; the standard load box comprises a voltage load box and a current load box and is used for simulating a terminal load on a secondary signal loop; the primary signal switching device is provided with three signal access channels which are respectively a mutual inductor tester channel, a first switch channel and a first terminal channel, and the primary signal switching device is provided with a signal channel switching function and can establish any signal path among the three channels of the primary signal switching device; the signal of the mutual inductor tester is connected to a mutual inductor tester channel of the primary signal switching device; the second switch channel of the secondary signal switching device is connected with the first terminal channel of the primary signal switching device; the boosting and current rising system comprises a program-controlled power source, a boosting mutual inductor, a current rising mutual inductor, a standard voltage mutual inductor and a standard current mutual inductor; the program-controlled power source is a high-power supply, and an output voltage and current signal is promoted to a voltage and current range of distribution network work through the boosting mutual inductor and the current boosting mutual inductor; signals of the standard voltage transformer and the standard current transformer are output to a transformer tester in the primary transformer test system; the control system comprises an Ethernet switch, a serial server and computer equipment, wherein the computer equipment is communicated with equipment in the system through the Ethernet switch and the serial server.
The system further comprises a power distribution terminal to be tested and a test sample switch, wherein the power distribution terminal to be tested is connected with a second terminal channel of a secondary signal switching device in a secondary terminal detection system, the test sample switch is connected with a first switch channel of a primary signal switching device in a primary mutual inductor detection system, and a communication interface of the power distribution terminal to be tested is connected to computer equipment through an Ethernet switch or a serial server of the control system.
As a further improvement of the present invention, the terminal tester is an electromagnetic terminal tester or an electronic terminal tester, and the terminal tester has functions of analog output of voltage signals and current signals of the electromagnetic transformer and micro voltage signals of the electronic transformer, and further has functions of output of switch control signals and reception of switch input signals.
As a further improvement of the invention, the terminal tester channel is a voltage and current signal and an input and output signal access channel of the terminal tester; the second terminal channel is a voltage and current signal of the power distribution terminal to be tested and an access channel for an access signal and an access signal; the second switch channel is a voltage and current signal of the primary signal switching device and an input-output signal access channel.
As a further improvement of the present invention, the transformer tester is a transformer tester compatible with electromagnetic and electronic transformer signals, and the transformer tester has a standard transformer signal input channel and a test transformer signal input channel, and has a function of calculating a transformation ratio error and a phase error of a test transformer, wherein the standard transformer signal input channel is used for receiving signals of a standard voltage transformer and a standard current transformer.
As a further improvement of the present invention, the transformer tester channel is a voltage and current signal access channel of the transformer tester, the first switch channel is a voltage and current signal and an open-close signal access channel of the sample switch, and the first terminal channel is a voltage and current signal and an open-close signal access channel of the secondary signal switching device.
A detection method for a primary and secondary fusion and deep fusion power distribution device is characterized in that the detection system for the primary and secondary fusion and deep fusion power distribution device according to any one of claims 1 to 6 is adopted, and comprises secondary terminal detection, primary transformer detection and secondary device complete detection, and the detection method specifically comprises the following steps:
s1: detecting a secondary terminal, wherein the computer equipment controls a secondary signal switching device to establish a passage from a terminal tester channel to a second terminal channel, and controls a power source of an electromagnetic terminal tester to output an electromagnetic voltage and current signal and an input and output signal to test an electromagnetic power distribution terminal to be tested; the computer equipment controls a power source of the electronic terminal tester to output an electronic voltage signal and an open-close signal to test the electronic power distribution terminal to be tested; the computer equipment is communicated with the power distribution terminal to be detected, acquires voltage, current, input and output information collected or output by the power distribution terminal, compares the information with the output information of a power source of the electromagnetic terminal tester or the power source of the electronic terminal tester, and realizes the detection of the power distribution terminal;
s2: detecting a primary transformer, wherein the computer equipment controls a primary signal switching device to establish a passage from a transformer tester channel to a first switch channel; the computer equipment controls a program-controlled power source in the boosting and current-rising system to output rated high voltage and large current of a distribution network to a test sample switch; the transformer tester simultaneously collects the output signal of a standard transformer and the output signal of a sample switch transformer, so as to realize the detection of the sample transformer;
s3: the computer equipment controls the secondary signal switching device to establish a passage from the second terminal channel to the second switch channel and controls the primary signal switching device to establish a passage from the first switch channel to the first terminal channel; the computer equipment controls a program-controlled power source in the boosting and current-rising system to output rated high voltage and large current of a distribution network to a switch; the computer equipment communicates with the power distribution terminal to be detected, acquires voltage, current, input and output information collected or output by the power distribution terminal, compares the information with output information of the program-controlled power source, and realizes primary and secondary equipment integrated detection.
Compared with the prior art, the invention has the beneficial effects that:
1. the secondary terminal test system, the primary mutual inductor test system and the boosting and current rising system are relatively independent, are connected in a communication mode and are uniformly coordinated and controlled by the control system;
2. the invention can independently complete terminal test and mutual inductor test, and complete a set of tests for one time and two times, and the signal switching device can realize that the wiring is not needed to be changed in the test process, and all test items can be automatically completed by the wiring for one time;
3. no strong current accident exists among the four subsystems, so that strong current and weak current isolation of the whole system is realized, and safety is enhanced.
Drawings
Fig. 1 is a schematic diagram of a primary-secondary fusion and deep fusion power distribution equipment detection system according to the present invention.
Fig. 2 is a screen assembling method of the primary and secondary fusion and deep fusion power distribution equipment detection system of the invention.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
As shown in fig. 1, a network equipment detection system for primary and secondary fusion and deep fusion is composed of a secondary terminal detection system, a primary mutual inductor detection system, a boosting and current rising system and a control system.
In this embodiment, the secondary terminal test system is composed of a terminal tester and a secondary signal switching device. As shown in fig. 2, the secondary terminal test system is implemented by a secondary terminal test screen, and includes a terminal tester (electronic type), a terminal tester (electromagnetic type), a high-speed wave recorder, and a secondary signal switching device, and the ethernet switch and the serial server of the control system shown in fig. 1 are also installed in the screen cabinet together.
In this embodiment, the terminal tester (electronic type) generates a small voltage signal output by the electronic transformer in an analog manner, the output rating of the electronic transformer is 3.25V, the output rating of the electronic current transformer is 1V, and multiple input and output signals are provided. The terminal tester (electromagnetic type) simulates and generates signals output by an electromagnetic type voltage transformer and a current transformer, the voltage output range is 0-440V, the current output range is 0-100A, and the terminal tester has multiple paths of input and output signals. The high-speed wave recorder has the function of multi-channel high-speed waveform acquisition. The secondary signal switching device is provided with three signal channels which are respectively in butt joint with the voltage, current, open-in and open-out signals of the terminal test, the voltage, current, open-in and open-out signals of the power distribution terminal to be tested and the terminal channel of the primary signal switching terminal. The three channels of the secondary signal switching device adopt a combined relay mode to realize the butt joint of any two channels of signals, and the signal switching function is completed. The secondary signal switching device is provided with a CPU and a communication interface, can be controlled by adopting a communication mode, and is configured with computer equipment and control software to realize automatic switching of signal channels.
In this embodiment, the primary transformer test system is composed of a transformer tester, an electric energy meter, a primary signal switching device, and a standard load box. As shown in fig. 2, the primary transformer test system is implemented by a primary transformer test screen, and includes a transformer tester, an electric energy meter calibrator, an electronic voltage load box, an electronic current load box, and a primary signal switching device.
In this embodiment, the standard signal interface of the transformer tester is interfaced with the standard voltage transformer and the standard current transformer signal interface of the boost current-boosting system, and the standard transformer signal is used as the standard comparison signal. The test signal interface of the mutual inductor test is divided into an electronic signal input interface and an electromagnetic signal input interface. And setting an effective test signal channel of the mutual inductor tester, and comparing the test signal with the standard signal to obtain the precision error and the phase error of the sample mutual inductor. The electric energy meter calibrator tests the accuracy of the terminal electric energy metering. The electronic voltage load box and the electronic current load box are provided with a CPU and a communication interface, and can be controlled in a communication mode to realize automatic load size change. The primary signal switching device is provided with three signal channels which are respectively in butt joint with the voltage and the current of the mutual inductor tester, in and out signal butt joint with the voltage and the current of the test sample switch and in and out signal butt joint with the switch channel of the secondary signal switching terminal. The three channels of the primary signal switching device adopt a combined relay mode to realize the butt joint of any two channels of signals, and the signal switching function is completed.
In this embodiment, the boost and boost system includes a programmable power source, a boost transformer, a standard voltage transformer, and a standard current transformer. As shown in fig. 2, the voltage-boosting current-boosting cabinet consists of A, B, C three-phase voltage-boosting current-boosting cabinets, and each cabinet consists of a power supply control device, a voltage and current power source, a self-boosting standard voltage transformer and a self-boosting standard current transformer.
In this embodiment, the power control device generates a voltage and current control signal and inputs the voltage and current control signal into the voltage and current power source, the power source generates a high-power voltage and current signal, and then the self-boosting standard voltage transformer and the self-boosting standard current transformer generate a 0-10kV voltage signal and a 0-600A current signal, which are applied to the sample switch. And a standard secondary voltage current signal output by the standard transformer is connected into the transformer tester.
In this embodiment, as shown in fig. 2, the ethernet switch and the serial server complete the communication connection of all the test devices. The test equipment with the serial port is connected to the serial server, and the serial server is connected to the Ethernet switch. The test equipment with an ethernet interface is directly connected to the ethernet switch. The computer equipment is also connected to the Ethernet switch, and the control software controls all the test equipment to complete the test items.
In this embodiment, the following method is adopted to perform the detection of the primary and secondary fusion devices:
as shown in fig. 1, the power distribution terminal to be tested is connected to the terminal channel of the secondary signal switching device in the secondary terminal detection system. The power distribution terminal to be tested and the signal switching device both adopt an aviation plug mode to lead out signals, and if the definitions of the aerial plug terminals are completely consistent, the aerial plug terminals can be directly butted through aerial plug cables; if the definitions of the aerial plug terminals are not consistent, the aerial plug terminals can be switched in a mode that the aerial plug is connected to the wiring board and then connected to the aerial plug. The connection signals of the power distribution terminal to be tested and the signal switching device comprise voltage, current, input and output.
As shown in fig. 1, the sample switch is connected to a switch channel of a primary signal switching device in the primary transformer detection system. The signals of the switch and the signal switching device are led out through the aerial plug, and if the aerial plug terminals are completely defined in accordance, the switch and the signal switching device can be directly butted through the aerial plug cable; if the definitions of the aerial plug terminals are not consistent, the aerial plug terminals can be switched in a mode that the aerial plug is connected to the wiring board and then connected to the aerial plug. The connection signals of the switch and the signal switching device comprise voltage, current, input and output.
In this embodiment, the ethernet communication interface of the power distribution terminal to be tested is connected to the ethernet switch.
In this embodiment, the secondary terminal detection includes the following steps:
and the control software sets the test system to be in a terminal test mode, namely controls the secondary signal switching device to establish a passage from the terminal tester channel to the terminal channel. If the power distribution terminal is electromagnetic signal input, the control software selects the terminal tester (electromagnetic type) as a signal source, and if the power distribution terminal is electronic signal input, the control software selects the terminal tester (electronic type) as the signal source. And the control software controls the signal source to output voltage, current and output signals according to the requirements of the test outline, and receives the input signals of the terminal. On the other hand, the control software communicates with the power distribution terminal by adopting an IEC104 communication protocol to acquire the telemetering, remote signaling, remote control and remote pulse information of the power distribution terminal, compares the information with an expected result, calculates errors and realizes the detection of the power distribution terminal.
In this embodiment, the primary transformer test includes the following steps:
and the control software sets the test system to be in a transformer test mode, namely controls the primary signal switching device to establish a passage from the transformer tester channel to the switch channel. The control software controls the power supply control device to output a control command to the voltage current power source, then outputs a required high-power voltage current signal, and then boosts the voltage and the current through the self-boosting standard voltage transformer and the self-boosting standard current transformer to generate 0-10kV and 0-600A signals required by the control software and apply the signals to the test sample switch. The standard mutual inductor and the sample mutual inductor simultaneously output signals to the mutual inductor tester, and the mutual inductor tester realizes the detection of the precision error and the phase error of the sample mutual inductor through sampling calculation.
In this embodiment, the primary and secondary equipment integrated test includes the following steps:
the control software sets the test system to be in a primary and secondary complete test mode, namely controls the secondary signal switching device to establish a path from the terminal channel to the switch channel, and controls the primary signal switching device to establish a path from the switch channel to the terminal channel, so that a signal of the test sample switch is directly connected with the power distribution terminal to be tested. The control software controls the power supply control device to output a control command to the voltage current power source, then outputs a required high-power voltage current signal, and then boosts the voltage and the current through the self-boosting standard voltage transformer and the self-boosting standard current transformer to generate 0-10kV and 0-600A signals required by the control software and apply the signals to the test sample switch. The voltage and current signals and the output signals of the mutual inductor of the sample switch are output to the terminal, and the control signals of the terminal are received. The control software is communicated with the power distribution terminal by adopting an IEC104 protocol to acquire remote measurement, remote signaling, remote control and remote pulse information of the power distribution terminal, compares the information with an expected result, calculates errors and realizes the complete detection of the primary and secondary equipment.
The embodiment of the invention provides a detection system and a detection method for primary and secondary fusion and deep fusion power distribution equipment, which can realize terminal detection, mutual inductor detection and primary and secondary complete detection on the primary and secondary fusion and deep fusion power distribution equipment, can realize one-time wiring to finish all test items by matching a primary and secondary signal switching device, and improve the detection efficiency.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (7)
1. The utility model provides a distribution equipment detecting system is fused and degree of depth to a secondary, its characterized in that: the system comprises a secondary terminal detection system, a primary mutual inductor detection system, a boosting and upwelling system and a control system;
the secondary terminal test system comprises a terminal tester and a secondary signal switching device; the secondary signal switching device is provided with three signal access channels which are respectively a terminal tester channel, a second terminal channel and a second switch channel, and the secondary signal switching device has a signal channel switching function and can establish any signal path among the three signal access channels of the secondary signal switching device; the input and output signals of the terminal tester are all accessed to the terminal tester channel of the secondary signal switching device;
the primary mutual inductor detection system comprises a mutual inductor tester, an electric energy meter calibrator, a standard load box and a primary signal switching device; the electric energy meter calibrator has the function of verifying the line loss calculation of the power distribution terminal to be tested; the standard load box comprises a voltage load box and a current load box and is used for simulating a terminal load on a secondary signal loop; the primary signal switching device is provided with three signal access channels which are respectively a mutual inductor tester channel, a first switch channel and a first terminal channel, and the primary signal switching device is provided with a signal channel switching function and can establish any signal path among the three channels of the primary signal switching device; the signal of the mutual inductor tester is connected to a mutual inductor tester channel of the primary signal switching device; the second switch channel of the secondary signal switching device is connected with the first terminal channel of the primary signal switching device;
the boosting and current rising system comprises a program-controlled power source, a boosting mutual inductor, a current rising mutual inductor, a standard voltage mutual inductor and a standard current mutual inductor; the program-controlled power source is a high-power supply, and an output voltage and current signal is promoted to a voltage and current range of distribution network work through the boosting mutual inductor and the current boosting mutual inductor; signals of the standard voltage transformer and the standard current transformer are output to a transformer tester in the primary transformer test system;
the control system comprises an Ethernet switch, a serial server and computer equipment, wherein the computer equipment is communicated with equipment in the system through the Ethernet switch and the serial server.
2. The system according to claim 1, wherein the system comprises: the testing system is characterized by further comprising a power distribution terminal to be tested and a test sample switch, wherein the power distribution terminal to be tested is connected with a second terminal channel of a secondary signal switching device in a secondary terminal detection system, the test sample switch is connected with a first switch channel of a primary signal switching device in a primary mutual inductor detection system, and a communication interface of the power distribution terminal to be tested is connected to computer equipment through an Ethernet switch or a serial server of the control system.
3. The system according to claim 2, wherein the power distribution equipment detection system comprises: the terminal tester is an electromagnetic terminal tester or an electronic terminal tester, and the terminal tester has the functions of analog output of voltage signals and current signals of the electromagnetic mutual inductor and micro voltage signals of the electronic mutual inductor, and also has the functions of output of switch control signals and reception of switch input signals.
4. The system according to claim 2, wherein the power distribution equipment detection system comprises: the terminal tester channel is a voltage and current signal of the terminal tester and an access channel for an access signal of an access signal; the second terminal channel is a voltage and current signal of the power distribution terminal to be tested and an access channel for an access signal and an access signal; the second switch channel is a voltage and current signal of the primary signal switching device and an input-output signal access channel.
5. The system according to claim 2, wherein the power distribution equipment detection system comprises: the mutual inductor tester is compatible with electromagnetic and electronic mutual inductor signals, is provided with a standard mutual inductor signal input channel and a test sample mutual inductor signal input channel, and has the functions of calculating the transformation ratio error and the phase error of a test sample mutual inductor, wherein the standard mutual inductor signal input channel is used for receiving signals of a standard voltage mutual inductor and a standard current mutual inductor.
6. The system according to claim 2, wherein the power distribution equipment detection system comprises: the transformer tester channel is a voltage and current signal access channel of the transformer tester, the first switch channel is a voltage and current signal access channel of a test sample switch and an access signal access channel, and the first terminal channel is a voltage and current signal access channel of the secondary signal switching device and an access signal access channel.
7. A detection method for a primary and secondary fusion and deep fusion power distribution device is characterized in that the detection system for the primary and secondary fusion and deep fusion power distribution device according to any one of claims 1 to 6 is adopted, and comprises secondary terminal detection, primary transformer detection and secondary device complete detection, and the detection method specifically comprises the following steps:
s1: detecting a secondary terminal, wherein the computer equipment controls a secondary signal switching device to establish a passage from a terminal tester channel to a second terminal channel, and controls a power source of an electromagnetic terminal tester to output an electromagnetic voltage and current signal and an input and output signal to test an electromagnetic power distribution terminal to be tested; the computer equipment controls a power source of the electronic terminal tester to output an electronic voltage signal and an open-close signal to test the electronic power distribution terminal to be tested; the computer equipment is communicated with the power distribution terminal to be detected, acquires voltage, current, input and output information collected or output by the power distribution terminal, compares the information with the output information of a power source of the electromagnetic terminal tester or the power source of the electronic terminal tester, and realizes the detection of the power distribution terminal;
s2: detecting a primary transformer, wherein the computer equipment controls a primary signal switching device to establish a passage from a transformer tester channel to a first switch channel; the computer equipment controls a program-controlled power source in the boosting and current-rising system to output rated high voltage and large current of a distribution network to a test sample switch; the transformer tester simultaneously collects the output signal of a standard transformer and the output signal of a sample switch transformer, so as to realize the detection of the sample transformer;
s3: the computer equipment controls the secondary signal switching device to establish a passage from the second terminal channel to the second switch channel and controls the primary signal switching device to establish a passage from the first switch channel to the first terminal channel; the computer equipment controls a program-controlled power source in the boosting and current-rising system to output rated high voltage and large current of a distribution network to a switch; the computer equipment communicates with the power distribution terminal to be detected, acquires voltage, current, input and output information collected or output by the power distribution terminal, compares the information with output information of the program-controlled power source, and realizes primary and secondary equipment integrated detection.
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| CN114646349A (en) * | 2022-03-21 | 2022-06-21 | 南方电网科学研究院有限责任公司 | Test system for primary and secondary fusion equipment of power distribution network |
| CN115420968A (en) * | 2022-07-21 | 2022-12-02 | 贵州电网有限责任公司 | Power distribution network terminal testing system and method based on channel switching |
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