CN113589043B - System and method for detecting secondary fusion and deep fusion power distribution equipment - Google Patents
System and method for detecting secondary fusion and deep fusion power distribution equipment Download PDFInfo
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- CN113589043B CN113589043B CN202110852436.3A CN202110852436A CN113589043B CN 113589043 B CN113589043 B CN 113589043B CN 202110852436 A CN202110852436 A CN 202110852436A CN 113589043 B CN113589043 B CN 113589043B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
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Abstract
The invention provides a secondary fusion and deep fusion power distribution equipment detection system and method. Compared with the prior art, the invention has the beneficial effects that: the secondary terminal test system, the primary transformer test system and the boosting and current-rising system are relatively independent and are connected in a communication mode, and are uniformly and coordinately controlled by the control system; the invention can independently complete terminal test and transformer test, and complete two-time complete test, and the signal switching device can realize that one-time wiring can automatically complete all test items without changing wiring in the test process; the four subsystems in the invention have no strong electricity or accidental strong electricity, so that the strong and weak electricity isolation of the whole system is realized, and the safety is enhanced.
Description
Technical Field
The invention relates to the technical field of power distribution equipment detection, in particular to a secondary fusion and deep fusion power distribution equipment detection system and method.
Background
The development design separation and experimental verification separation of the traditional distribution switch are realized, the interfaces of secondary equipment among different manufacturers are not matched, and the compatibility, the expansibility and the interchangeability are poor. The primary and secondary equipment debugging of the power distribution switch equipment is difficult to determine the reason after faults occur in the operation process, so that primary and secondary equipment manufacturers generate liability disputes, the equipment operation and maintenance difficulty is high, and the on-site defect elimination is difficult.
In recent years, as the national network company implements power distribution secondary synchronous planning, synchronous design and synchronous construction, the power distribution network equipment adopts a primary and secondary integral design, mutual fusion and integral bidding mode to be applied to the site, and the rapid development of a power distribution secondary fusion technology is promoted. The distribution network secondary integration technology improves the operation level, operation and maintenance quality and efficiency of the distribution equipment by improving the standardization and integration level of the primary and secondary distribution equipment. The technology of secondary integration of distribution network has been developed to the equipment integration stage, and the small-signal electronic voltage-current transformer starts to be integrated with the switching equipment in depth, so that the miniaturization and integration of the switch are realized.
The secondary fuses distribution equipment and uses electromagnetic transformer, and the secondary degree of depth fuses equipment and uses electronic transformer, for both, the technical performance of equipment must detect qualified just can use, and especially electronic type small signal easily receives the interference, and its degree of accuracy is particularly important. At present, a detection system of a secondary fusion device generally aims at an electromagnetic transformer and corresponding signals, so that a secondary fusion and depth fusion detection system compatible with the electromagnetic transformer and electronic transformer signals is highly required to detect a secondary fusion and depth fusion power distribution device.
Disclosure of Invention
In order to solve the problems, the invention discloses a secondary fusion and deep fusion power distribution equipment detection system and a secondary fusion and deep fusion power distribution equipment detection method, which realize primary, secondary and complete detection of power distribution equipment adopting an electromagnetic transformer and an electronic transformer.
In order to achieve the above purpose, the following technical scheme is adopted in the invention:
The secondary fusion and depth fusion power distribution equipment detection system is characterized by comprising a secondary terminal detection system, a primary transformer detection system, a boosting and current-rising system and a control system; the secondary terminal detection system comprises a terminal tester and a secondary signal switching device; the secondary signal switching device is provided with three signal access channels, namely a terminal tester channel, a second terminal channel and a second switch channel, and has a signal channel switching function, so that any signal path can be established among the three signal access channels of the secondary signal switching device; the input and output signals of the terminal tester are connected to the terminal tester channel of the secondary signal switching device; the primary transformer detection system comprises a transformer 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 checking 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 the secondary signal loop; the primary signal switching device is provided with three signal access channels, namely a transformer tester channel, a first switch channel and a first terminal channel, and has a signal channel switching function, so that any signal channel can be established among the three channels of the primary signal switching device; the signal of the mutual inductor tester is connected to the 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-increasing system comprises a program-controlled power source, a boosting transformer, a current-increasing transformer, a standard voltage transformer and a standard current transformer; the program-controlled power source is a high-power source, and the output voltage and current signals are lifted to the voltage and current range of the work of the distribution network through the boosting transformer and the current-rising transformer; the signals of the standard voltage transformer and the standard current transformer are output to a transformer tester in the primary transformer detection system; the control system comprises an Ethernet switch, a serial port server and computer equipment, wherein the computer equipment communicates with equipment in the system through the Ethernet switch and the serial port server.
The invention further comprises a power distribution terminal to be tested and a 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 sample switch is connected with a first switch channel of a primary signal switching device in a primary transformer 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 port server of the control system.
As a further improvement of the invention, the terminal tester is an electromagnetic terminal tester or an electronic terminal tester, and the terminal tester has the functions of simulating and outputting voltage signals and current signals of an electromagnetic transformer and micro voltage signals of the electronic transformer, and also has the functions of outputting switch control signals and receiving switch input signals.
As a further improvement of the invention, the terminal tester channel is a voltage and current signal and an on-off signal access channel of the terminal tester; the second terminal channel is a voltage and current signal and an opening-in-opening-out signal access channel of the power distribution terminal to be tested; the second switch channel is a voltage current signal and an on-off signal access channel of the primary signal switching device.
As a further improvement of the invention, the mutual inductor tester is a mutual inductor tester compatible with electromagnetic and electronic mutual inductor signals, and is provided with a standard mutual inductor signal input channel and a test sample mutual inductor signal input channel, and has the function of calculating transformation ratio errors and phase errors of the 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.
As a further improvement of the 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 opening and closing signal access channel of a sample switch, and the first terminal channel is a voltage and current signal and an opening and closing signal access channel of a secondary signal switching device.
A secondary fusion and depth fusion power distribution equipment detection method is characterized by comprising the following specific steps of secondary terminal detection, primary transformer detection and secondary equipment complete detection:
s1: the secondary terminal detection, the computer equipment controls the secondary signal switching device to establish a channel from the terminal tester channel to the second terminal channel, and the computer equipment controls the power source of the electromagnetic terminal tester to output electromagnetic voltage and current signals and switch-in and switch-out signals to test the 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 on-off signal to test the electronic power distribution terminal to be tested; the computer equipment is communicated with the power distribution terminal to be tested, acquires voltage, current, on-off information acquired or output by the power distribution terminal, compares the information with output information of a power source of the electromagnetic terminal tester or a power source of the electronic terminal tester, and realizes detection of the power distribution terminal;
S2: detecting a primary transformer, wherein the computer equipment controls the primary signal switching device to establish a path from a transformer tester channel to a first switch channel; the computer equipment controls a program-controlled power source in the boosting and current-increasing system to output rated high voltage and large current of the distribution network to the sample switch; the mutual inductor tester collects the output signals of the standard mutual inductor and the output signals of the sample switch mutual inductor at the same time, so that the detection of the sample mutual inductor is realized;
S3: the computer equipment controls the secondary signal switching device to establish a path from the second terminal channel to the second switch channel, and controls the primary signal switching device to establish a path from the first switch channel to the first terminal channel; the computer equipment controls a program-controlled power source in the boosting and current-increasing system to output rated high voltage and large current of the distribution network to the switch; the computer equipment is communicated with the power distribution terminal to be tested, acquires voltage, current, on-off information acquired or output by the power distribution terminal, compares the information with output information of the program-controlled power source, and realizes complete detection of secondary equipment.
Compared with the prior art, the invention has the beneficial effects that:
1. The secondary terminal detection system, the primary transformer detection system and the boosting and current-rising system are relatively independent and are connected in a communication mode, and are uniformly and coordinately controlled by the control system;
2. The invention can independently complete terminal test and transformer test, and complete two-time complete test, and the signal switching device can realize that one-time wiring can automatically complete all test items without changing wiring in the test process;
3. The four subsystems in the invention have no strong electricity or accidental strong electricity, so that the strong and weak electricity isolation of the whole system is realized, and the safety is enhanced.
Drawings
Fig. 1 is a schematic diagram of a secondary and deep fusion power distribution equipment detection system of the present invention.
Fig. 2 is a screen assembly method of a secondary fusion and depth fusion power distribution equipment detection system of the present invention.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention.
As shown in FIG. 1, the detection system of the secondary fusion and deep fusion network equipment consists of a secondary terminal detection system, a primary transformer detection system, a boosting and current-rising system and a control system.
In this embodiment, the secondary terminal detection system is composed of a terminal tester and a secondary signal switching device. As shown in FIG. 2, the secondary terminal detection system is realized by a secondary terminal test screen, and comprises a terminal tester (electronic), a terminal tester (electromagnetic), a high-speed wave recorder and a secondary signal switching device, and an Ethernet switch and a serial port server of the control system shown in FIG. 1 are also installed in the screen cabinet in the same group.
In this embodiment, the terminal tester (electronic type) simulates and generates a micro voltage signal output by the electronic transformer, the output rating of the electronic voltage transformer is 3.25V, and the output rating of the electronic current transformer is 1V, and the terminal tester has multiple paths of on-off signals. The terminal tester (electromagnetic) simulates signals output by an electromagnetic voltage transformer and a current transformer, the voltage output range is 0-440V, and the current output range is 0-100A, and the terminal tester has multipath switching-in and switching-out signals. The high-speed recorder has a multichannel high-speed waveform acquisition function. The secondary signal switching device is provided with three signal channels which are respectively in butt joint with the voltage, current, on-off signals of the terminal test, in butt joint with the voltage, current, on-off signals of the power distribution terminal to be tested and in butt joint with the terminal channels of the primary signal switching terminal. The three paths of the secondary signal switching device adopt a combined relay mode to realize the butt joint of any two paths 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 in 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 detection 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 detection system is realized by a primary transformer test screen and comprises 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 interfaces with the standard voltage transformer and the standard current transformer signal interface of the boost up-flow system, and uses the standard transformer signal as the standard comparison signal. The test signal interface of the transformer test is divided into an electronic signal input interface and an electromagnetic signal input interface. And setting an effective test signal channel of the transformer tester, and then comparing the test signal with a standard signal to obtain the precision error and the phase error of the sample transformer. The electric energy meter calibrator tests the accuracy of 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 change of load size. 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 transformer tester, in butt joint with the voltage, the current, the on-off signals of the sample switch and in butt joint with the switch channels of the secondary signal switching terminal. The three paths of the primary signal switching device realize the butt joint of any two paths of signals in a combined relay mode, and the signal switching function is completed.
In this embodiment, the boost up-current system includes a programmable power source, a boost transformer, an up-current transformer, a standard voltage transformer, and a standard current transformer. As shown in fig. 2, each screen cabinet consists of A, B, C three-phase boosting current-up cabinets, and each screen cabinet comprises a power supply control device, a voltage current power source, a self-boosting standard voltage transformer and a self-boosting standard current transformer.
In the embodiment, the power supply control device generates voltage and current control signals to be input into a voltage and current power source, the power source generates high-power voltage and current signals, and then the high-power voltage and current signals are generated by a self-boosting standard voltage transformer and a self-boosting standard current transformer to be applied to the sample switch. And a standard secondary voltage and 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 port server, and the serial port server is connected to the Ethernet switch. The test equipment with the 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 project.
In this embodiment, the detection of the secondary fusion device is performed by the following method:
As shown in fig. 1, the power distribution terminal to be tested is connected with a terminal channel of a secondary signal switching device in the secondary terminal detection system. The power distribution terminal to be tested and the signal switching device are led out by adopting an aviation plug mode, and if the definition of the two aviation plug terminals is completely consistent, the two aviation plug terminals can be directly connected through an aviation plug cable; if the two aviation plug terminals are inconsistent in definition, the connection mode of the aviation plug to the wiring row and then to the aviation plug can be adopted for switching. The connecting signals of the power distribution terminal to be tested and the signal switching device comprise voltage, current, on-off and on-off.
As shown in fig. 1, the sample switch is connected with 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 aviation plug, if the definition of the two aviation plug terminals is completely consistent, the signals can be directly connected through an aviation plug cable; if the two aviation plug terminals are inconsistent in definition, the connection mode of the aviation plug to the wiring row and then to the aviation plug can be adopted for switching. The connection signals of the switch and the signal switching device comprise voltage, current, on-in and off.
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 steps of:
the control software sets the test system as a terminal test mode, namely, controls the secondary signal switching device to establish a channel 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. The control software controls the signal source to output voltage, current and opening signals according to the outline requirement of the test, and receives the opening signals of the terminal. On the other hand, the control software adopts IEC104 communication protocol to communicate with the power distribution terminal, acquires telemetry, remote signaling, remote control and remote pulse information of the power distribution terminal, compares the information with expected results, calculates errors and realizes detection of the power distribution terminal.
In this embodiment, the primary transformer test includes the steps of:
The control software sets the testing system to be in a transformer testing mode, namely, controls the primary signal switching device to establish a channel from a transformer tester channel to a switch channel. The control software controls the power supply control device to output a control instruction to the voltage current power source, then outputs a required high-power voltage current signal, and then increases the voltage and the current through the self-boosting standard voltage transformer and the self-boosting standard current transformer, so that 0-10kV and 0-600A signals required by the control software are generated and applied to the sample switch. The standard transformer and the sample transformer output signals to the transformer tester at the same time, and the transformer tester realizes the detection of the precision error and the phase error of the sample transformer through sampling calculation.
In this embodiment, the secondary equipment unitization test includes the steps of:
The control software sets the test system to a 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 the signal of the test 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 instruction to the voltage current power source, then outputs a required high-power voltage current signal, and then increases the voltage and the current through the self-boosting standard voltage transformer and the self-boosting standard current transformer, so that 0-10kV and 0-600A signals required by the control software are generated and applied to the sample switch. The voltage and current signals and the opening signals of the transformer of the sample switch are output to the terminal, and the control signals of the terminal are received. The control software adopts IEC104 protocol to communicate with the power distribution terminal, acquires telemetry, remote signaling, remote control and remote pulse information of the power distribution terminal, compares the information with expected results, calculates errors and realizes complete detection of secondary equipment.
The embodiment of the invention provides a system and a method for detecting secondary fusion and deep fusion power distribution equipment, which can realize terminal detection, transformer detection and secondary complete detection on the secondary fusion and deep fusion power distribution equipment, can realize one-time wiring to complete all test projects through the cooperation of a secondary signal switching device, and improve the detection efficiency.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. A secondary fuses and degree of depth fuses distribution equipment detecting system, its characterized in that: the system comprises a secondary terminal detection system, a primary transformer detection system, a boosting and current-rising system and a control system;
the secondary terminal detection system comprises a terminal tester and a secondary signal switching device; the secondary signal switching device is provided with three signal access channels, namely a terminal tester channel, a second terminal channel and a second switch channel, and has a signal channel switching function, so that any signal path can be established among the three signal access channels of the secondary signal switching device; the input and output signals of the terminal tester are connected to the terminal tester channel of the secondary signal switching device;
the primary transformer detection system comprises a transformer 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 checking 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 the secondary signal loop; the primary signal switching device is provided with three signal access channels, namely a transformer tester channel, a first switch channel and a first terminal channel, and has a signal channel switching function, so that any signal channel can be established among the three channels of the primary signal switching device; the signal of the mutual inductor tester is connected to the 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-increasing system comprises a program-controlled power source, a boosting transformer, a current-increasing transformer, a standard voltage transformer and a standard current transformer; the program-controlled power source is a high-power source, and the output voltage and current signals are lifted to the voltage and current range of the work of the distribution network through the boosting transformer and the current-rising transformer; the signals of the standard voltage transformer and the standard current transformer are output to a transformer tester in the primary transformer detection system;
The control system comprises an Ethernet switch, a serial port server and computer equipment, wherein the computer equipment communicates with equipment in the system through the Ethernet switch and the serial port server.
2. A secondary and deep fusion power distribution equipment detection system as defined in claim 1, wherein: the system also comprises a power distribution terminal to be tested and a 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 switch is connected with a first switch channel of a primary signal switching device in the primary transformer 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 port server of the control system.
3. A secondary and deep fusion power distribution equipment detection system as defined in claim 2, wherein: the terminal tester is an electromagnetic terminal tester or an electronic terminal tester, and is provided with the functions of simulating and outputting electromagnetic transformer voltage signals and current signals and electronic transformer micro voltage signals, outputting switch control signals and receiving switch input signals.
4. A secondary and deep fusion power distribution equipment detection system as defined in claim 2, wherein: the terminal tester channel is a voltage and current signal and an on-off signal access channel of the terminal tester; the second terminal channel is a voltage and current signal and an opening-in-opening-out signal access channel of the power distribution terminal to be tested; the second switch channel is a voltage current signal and an on-off signal access channel of the primary signal switching device.
5. A secondary and deep fusion power distribution equipment detection system as defined in claim 2, wherein: the mutual inductor tester is compatible with electromagnetic and electronic mutual inductor signals, and is provided with a standard mutual inductor signal input channel and a sample mutual inductor signal input channel, and has the function of calculating transformation ratio errors and phase errors of the 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. A secondary and deep fusion power distribution equipment detection system as defined in claim 2, wherein: 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 opening-in-opening-out signal access channel of a sample switch, and the first terminal channel is a voltage and current signal and an opening-in-opening-out signal access channel of the secondary signal switching device.
7. A secondary fusion and deep fusion power distribution equipment detection method, which is characterized in that a secondary fusion and deep fusion power distribution equipment detection system as claimed in any one of claims 1-6 is adopted, and comprises the following specific steps of secondary terminal detection, primary transformer detection and secondary equipment complete detection:
s1: the secondary terminal detection, the computer equipment controls the secondary signal switching device to establish a channel from the terminal tester channel to the second terminal channel, and the computer equipment controls the power source of the electromagnetic terminal tester to output electromagnetic voltage and current signals and switch-in and switch-out signals to test the 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 on-off signal to test the electronic power distribution terminal to be tested; the computer equipment is communicated with the power distribution terminal to be tested, acquires voltage, current, on-off information acquired or output by the power distribution terminal, compares the information with output information of a power source of the electromagnetic terminal tester or a power source of the electronic terminal tester, and realizes detection of the power distribution terminal;
S2: detecting a primary transformer, wherein the computer equipment controls the primary signal switching device to establish a path from a transformer tester channel to a first switch channel; the computer equipment controls a program-controlled power source in the boosting and current-increasing system to output rated high voltage and large current of the distribution network to the sample switch; the mutual inductor tester collects the output signals of the standard mutual inductor and the output signals of the sample switch mutual inductor at the same time, so that the detection of the sample mutual inductor is realized;
S3: the computer equipment controls the secondary signal switching device to establish a path from the second terminal channel to the second switch channel, and controls the primary signal switching device to establish a path from the first switch channel to the first terminal channel; the computer equipment controls a program-controlled power source in the boosting and current-increasing system to output rated high voltage and large current of the distribution network to the switch; the computer equipment is communicated with the power distribution terminal to be tested, acquires voltage, current, on-off information acquired or output by the power distribution terminal, compares the information with output information of the program-controlled power source, and realizes complete detection of secondary equipment.
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| 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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| CN211554294U (en) * | 2019-10-24 | 2020-09-22 | 武汉华瑞智深电气技术有限公司 | Portable mutual inductor error detection device for primary and secondary fusion |
| CN110824204A (en) * | 2019-11-25 | 2020-02-21 | 国网江苏省电力有限公司电力科学研究院 | Integrated access device convenient for assembling one-time and two-time integrated complete switch test equipment |
| CN111044831A (en) * | 2019-12-31 | 2020-04-21 | 珠海博威智能电网有限公司 | Detection system based on primary and secondary fusion power distribution equipment |
| CN111929483A (en) * | 2020-08-07 | 2020-11-13 | 贵州电网有限责任公司 | Primary and secondary fusion equipment test system and test method thereof |
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