CN206638784U - A kind of true type primary cut-out energy storage component defects simulation and detection means - Google Patents

Abstract

The utility model discloses a kind of true type primary cut-out energy storage component defects simulation and detection means, including primary cut-out, breaker operating characteristic tester, energy storage motor current detecting instrument, DC current transformer, spring pressure sensor and spring pressure detector；The divide-shut brake control loop of the divide-shut brake control line access primary cut-out of breaker operating characteristic tester；DC current transformer is clipped in the tank circuit of primary cut-out, its output line access energy storage motor current detecting instrument；Spring pressure sensor is arranged on high voltage circuit breaker closing energy-stored spring and separating brake energy-stored spring lower end, its output line access spring pressure detector.The utility model can effectively simulate the number of drawbacks that energy storage component easily occurs in actual high-voltage breaker running, and energy storage motor electric current, spring pressure when detecting defect；Defect is all realized by the original part of breaker, can realize the switching of different type defect with defective part by dismounting.

Description

A real-type high-voltage circuit breaker energy storage component defect simulation and detection device

technical field

The utility model belongs to the field of defect diagnosis of high-voltage circuit breakers, in particular to a device for realizing defect simulation and detection of energy storage parts of high-voltage circuit breakers.

Background technique

High-voltage circuit breakers are the most important control and protection equipment in power systems. They have a large number and extremely complex structures in the power grid. Compared with static equipment such as transformers, circuit breakers are dynamic equipment and need to be frequently operated. During the long-term operation of the high-voltage circuit breaker, affected by factors such as environmental factors, the aging of the components themselves, and spring fatigue, various defects will appear in the energy storage components, such as poor insulation of the energy storage circuit, disconnection of the energy storage circuit, and aging of the energy storage spring. Deformation, etc.; and the defect of the energy storage part of the circuit breaker may cause abnormal or no energy storage of the mechanism, resulting in the refusal of the circuit breaker, resulting in damage to the circuit breaker equipment or expansion of the fault range, and the loss is far greater than that of the circuit breaker itself. value. Therefore, timely detection of defects in energy storage components of circuit breakers and making accurate maintenance decisions are of great significance to ensure the safe and stable operation of circuit breakers.

Defects in the energy storage parts of the circuit breaker will cause abnormal waveforms of the energy storage motor current and spring pressure of the circuit breaker. By detecting the energy storage motor current and spring pressure, these defects that may cause the circuit breaker to refuse to operate can be found in advance; however, the current domestic energy storage motor Current detection and spring pressure detection are limited to instrument waveform reading and waveform map comparison. Due to the limitations of typical waveforms provided by instrument manufacturers, it is difficult to truly reflect the defects of circuit breaker energy storage components. At the same time, there has not been a real high-voltage circuit breaker platform in China to simulate the defects of energy storage components, and systematically carry out research on the relationship between the defects of circuit breaker energy storage components and the current signal of the energy storage motor and the spring pressure signal. Therefore, it is necessary to conduct defect analysis and judgment research on energy storage components of high-voltage circuit breakers based on energy storage motor current and spring pressure detection, and to construct a real-type high-voltage circuit breaker energy storage component defect simulation and energy storage motor current and spring pressure detection device.

Utility model content

The technical problem to be solved by the utility model is to provide a real-type high-voltage circuit breaker energy storage component defect simulation and detection device for the deficiencies of the prior art. The utility model can effectively simulate the energy storage component in the actual high-voltage circuit breaker operation process A variety of defects that are prone to occur, and detect the energy storage motor current and spring pressure when the defects are detected; the defects are all realized by the original parts of the circuit breaker, and the switching of different types of defects can be realized by disassembling and assembling the parts with defects.

The technical scheme of the utility model is:

A real-type high-voltage circuit breaker energy storage component defect simulation and detection device, including a high-voltage circuit breaker 1, a circuit breaker action characteristic tester 2, an energy storage motor current detector 3, a DC current transformer 4, a spring pressure sensor 6 and a spring Pressure detector 7;

The opening and closing control line of the circuit breaker action characteristic tester 2 is connected to the opening and closing control circuit of the high voltage circuit breaker 1;

The DC current transformer 4 is clamped in the energy storage circuit of the high voltage circuit breaker 1 (the power supply circuit between the DC power supply and the energy storage motor of the high voltage circuit breaker 1); the signal output line of the DC current transformer 4 is connected to the energy storage motor current Detector 3;

The spring pressure sensor 6 is installed at the lower end of the closing energy storage spring and the opening energy storage spring of the high voltage circuit breaker 1; the signal output line of the spring pressure sensor 6 is connected to the spring pressure detector 7;

The energy storage component defect simulation refers to replacing and installing the faulty energy storage component to the position of the energy storage component in the above device; the energy storage component includes an energy storage circuit, a closing energy storage spring and an opening energy storage spring.

The fault energy storage component adopts the fault energy storage component of the high voltage circuit breaker itself.

The DC current transformer 4 adopts a high-precision DC current transformer with an accuracy of 0.1 grade.

The above-mentioned real-type high-voltage circuit breaker energy storage component defect simulation and energy storage motor current, spring pressure detection device also includes a DC power supply 5, and the DC power supply 5 provides energy storage power for the energy storage motor in the high voltage circuit breaker 1.

The working principle of the utility model is: in the test process, the defect of the energy storage part of the high-voltage circuit breaker 1 is preset first, and the opening and closing control signal of the high-voltage circuit breaker 1 is provided by the circuit breaker action characteristic tester 2, which is passed through the DC current transformer 4 Collect and record the current of the energy storage motor during the energy storage process of the high-voltage circuit breaker with the energy storage motor current detector 3, that is, the current waveform on the energy storage circuit, and at the same time collect and record the high voltage circuit breaker through the spring pressure sensor 6 and the spring pressure detector 7 Spring pressure waveform during charging.

It is convenient, safe and reliable to adjust the type of the energy storage component of the defective high-voltage circuit breaker 1 by replacing the faulty energy storage component.

The defect of the energy storage part of the high voltage circuit breaker is simulated by the faulty energy storage part of the high voltage circuit breaker itself, which is easy to disassemble and replace, is conducive to switching the defect type, and can truly reflect the possible defects of the energy storage part of the actual operation of the high voltage circuit breaker.

The beneficial effects of the utility model are:

The utility model provides a real-type high-voltage circuit breaker energy storage component defect simulation and detection device, which can effectively simulate a variety of energy storage component defects that may occur during the actual high-voltage circuit breaker operation, and detect the defects through the energy storage motor current and spring pressure. The instrument detects and analyzes the current signal of the energy storage motor and the spring pressure signal under the defect of the energy storage component, which can provide a test platform for systematically studying the relationship between the defect of the energy storage component of the high-voltage circuit breaker, the current of the energy storage motor, and the spring pressure; the test results can guide The actual high-voltage circuit breaker mechanism defect analysis work provides a basis for diagnosing whether there is a risk of high-voltage circuit breaker refusal to operate, timely discovering defects in energy storage components of high-voltage circuit breakers, accurately evaluating the operating status of circuit breakers, and making decision-making for circuit breaker maintenance.

The defect of the energy storage part of the high-voltage circuit breaker of the utility model is simulated by the components of the circuit breaker itself, which is easy to disassemble and replace, is conducive to switching defect types, and can truly reflect the possible defects of the energy storage part of the high-voltage circuit breaker in actual operation.

Description of drawings

Fig. 1 is the structural diagram of a specific embodiment of the present utility model, is marked as in the figure:

1—High voltage circuit breaker

2—circuit breaker action characteristic tester

3—Energy storage motor current detector

4—DC Current Transformer

5—DC power supply

6—Spring pressure sensor

7—Spring Pressure Detector

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

Referring to accompanying drawing 1, the utility model discloses a real-type high-voltage circuit breaker energy storage component defect simulation and detection device, including a high-voltage circuit breaker 1, a circuit breaker action characteristic tester 2, an energy storage motor current detector 3, a DC current Transformer 4, DC power supply 5, spring pressure sensor 6 and spring pressure detector 7;

The opening and closing control line of the circuit breaker action characteristic tester 2 is connected to the opening and closing control circuit of the high voltage circuit breaker 1;

The DC current transformer 4 is clamped in the energy storage circuit of the high voltage circuit breaker 1 (the power supply circuit between the DC power supply and the energy storage motor of the high voltage circuit breaker 1); the signal output line of the DC current transformer 4 is connected to the energy storage motor current Detector 3; DC power supply 5 provides energy storage power for the energy storage motor in the high voltage circuit breaker 1;

The spring pressure sensor 6 is installed at the lower end of the closing energy storage spring and the opening energy storage spring of the high voltage circuit breaker 1; the signal output line of the spring pressure sensor 6 is connected to the spring pressure detector 7;

The energy storage component defect simulation refers to replacing and installing the faulty energy storage component to the position of the energy storage component in the above device; the energy storage component includes an energy storage circuit, a closing energy storage spring and an opening energy storage spring.

The fault energy storage component adopts the fault energy storage component of the high voltage circuit breaker itself.

The DC current transformer 4 adopts a high-precision DC current transformer with an accuracy of 0.1 grade.

The above-mentioned real-type high-voltage circuit breaker energy storage component defect simulation and energy storage motor current, spring pressure detection device also includes a DC power supply 5, and the DC power supply 5 provides energy storage power for the energy storage motor in the high voltage circuit breaker 1.

The working principle of the utility model is as follows: in the test process, the defect of the energy storage part of the high-voltage circuit breaker 1 is preset first, and then the test wiring is carried out according to the accompanying drawing 1 to ensure good grounding, and then the high-voltage circuit breaker is provided by the circuit breaker action characteristic tester 2 The opening and closing control signal of 1 is collected and recorded through the DC current transformer 4 and the energy storage motor current detector 3 during the energy storage process of the high-voltage circuit breaker, that is, the current waveform on the energy storage circuit, and at the same time through the spring pressure The sensor 6 and the spring pressure detector 7 collect and record the spring pressure waveform during the energy storage process of the high voltage circuit breaker.

It is convenient, safe and reliable to adjust the type of the energy storage component of the defective high-voltage circuit breaker 1 by replacing the faulty energy storage component.

The defect of the energy storage part of the high voltage circuit breaker is simulated by the faulty energy storage part of the high voltage circuit breaker itself, which is easy to disassemble and replace, is conducive to switching the defect type, and can truly reflect the possible defects of the energy storage part of the actual operation of the high voltage circuit breaker.

The utility model provides a real-type high-voltage circuit breaker energy storage component defect simulation and detection device and method, which can effectively simulate various energy storage component defects that may occur in the actual high-voltage circuit breaker operation, and through the energy storage motor current, spring pressure The testing instrument detects and analyzes the current signal and spring pressure signal of the energy storage motor under the defect of the energy storage component, which can provide a test platform for systematically studying the relationship between the defect of the energy storage component of the high-voltage circuit breaker, the current of the energy storage motor, and the spring pressure; Guide the defect analysis of the actual high-voltage circuit breaker mechanism, provide a basis for diagnosing whether there is a risk of high-voltage circuit breaker refusal to operate, timely discovering defects in energy storage components of high-voltage circuit breakers, accurately evaluating the operating status of circuit breakers, and making decision-making for circuit breaker maintenance.

Example 1:

This embodiment is constructed with reference to Figure 1, in which the high-voltage circuit breaker 1 is a commercially available high-voltage circuit breaker, and the components for simulating defects are self-developed, which can simulate various types of defects in the energy storage components of the circuit breaker, such as poor insulation of the energy storage circuit, storage Disconnection of the energy circuit, aging and deformation of the energy storage spring; the circuit breaker action characteristic tester 2 adopts a commercially available circuit breaker action characteristic tester, which is used to output the opening and closing control voltage of the circuit breaker; the energy storage motor current detector 3 adopts a self-developed The energy storage motor current detector can store and record the current signal waveform of the energy storage motor; the high-precision DC current transformer 4 adopts a self-developed high-precision DC current transformer, which can accurately measure the current signal of the energy storage motor; the DC power supply 5 adopts the market DC voltage for sale, can provide 220V DC voltage, as a circuit breaker energy storage power supply; spring pressure sensor 6 adopts self-developed pressure sensor, which can accurately measure spring pressure; And record the spring pressure signal waveform.

The real-type high-voltage circuit breaker energy storage component defect simulation and detection device product of this embodiment has been proved to be effective, easy to use, safe and reliable through tests and trial runs, and fully meets the design requirements.

Claims (4)

1. a kind of true type primary cut-out energy storage component defects simulation and detection means, it is characterised in that including primary cut-out (1), breaker operating characteristic tester (2), energy storage motor current detecting instrument (3), DC current transformer (4), spring pressure Sensor (6) and spring pressure detector (7)；

The divide-shut brake of the divide-shut brake control line access primary cut-out (1) of the breaker operating characteristic tester (2) controls back Road；

The DC current transformer (4) is clipped in the tank circuit of primary cut-out (1)；The letter of DC current transformer (4) Number output line access energy storage motor current detecting instrument (3)；

The spring pressure sensor (6) is arranged on primary cut-out (1) combined floodgate energy-stored spring and separating brake energy-stored spring lower end；Bullet The output line access spring pressure detector (7) of spring pressure sensor (6)；

The energy storage component defects simulation refers to replacing failure energy storage component into the energy storage component position being attached in said apparatus； Energy storage component includes tank circuit, combined floodgate energy-stored spring and separating brake energy-stored spring.

2. true type primary cut-out energy storage component defects simulation according to claim 1 and detection means, it is characterised in that The failure energy storage component uses the failure energy storage component of primary cut-out in itself.

3. true type primary cut-out energy storage component defects simulation according to claim 1 and detection means, it is characterised in that The DC current transformer (4) uses the degree of accuracy as 0.1 grade of High-accuracy direct current current transformer.

4. according to true type primary cut-out energy storage component defects simulation according to any one of claims 1 to 3 and detection means, Characterized in that, also including dc source (5), dc source (5) provides energy storage electricity for the energy storage motor in primary cut-out (1) Source.