One-step wiring device and method for testing 1000kV lightning arrester reference voltage and leakage current

A leakage current and reference voltage technology, applied in the field of primary wiring devices for testing the reference voltage and leakage current of 1000kV arresters, can solve the problem of heavy workload of repeated disconnection, reduce the test workload, shorten the time of power outage, and avoid repeated disconnection. The effect of changing the wiring

Active Publication Date: 2014-03-12
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] In order to overcome the problems in the prior art, the present invention provides a primary wiring device and method for testing the reference voltage and leakage current of a 1000kV arrester. The

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  • One-step wiring device and method for testing 1000kV lightning arrester reference voltage and leakage current
  • One-step wiring device and method for testing 1000kV lightning arrester reference voltage and leakage current

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[0028] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0029] The DC reference voltage of the arrester refers to the measured DC voltage value of the arrester when the arrester passes the DC reference current. The DC reference current of the arrester is usually 8mA, 0.75U 1mA Refers to 0.75 times the 8mA DC reference voltage. The 8mA DC reference voltage and the leakage current at 0.75 times this voltage actually reflect the position of the inflection point of the arrester’s UI characteristic curve, which are two important parameters for determining the characteristics of the arrester. These two parameters can directly reflect whether the arrester is aging and Damp.

[0030] Such as figure 1 As shown, in the embodiment of the present invention, used to test the DC reference voltage and leakage current of a 1000kV arrester. The 1000kV arrester is usually composed of 5 units in series. The primary wiring device inc...

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Abstract

The invention discloses a one-step wiring device and a one-step wiring method for testing 1000kV lightning arrester reference voltage and leakage current. The device comprises an industrial personal computer, a communication module, a direct-current high-voltage generator, a positive and negative adjustable direct-current power supply, an ampere meter A1, an ampere meter A2 and a relay adapter board, wherein the industrial personal computer is connected with the direct-current high-voltage generator and the positive and negative adjustable direct-current power supply through the communication module to realize data communication, the direct-current high-voltage generator and the positive and negative adjustable direct-current power supply are respectively and serially connected with the ampere meters and then are connected with relays on the relay adapter board, and the relay adapter board is connected with a tested lightning arrester through a testing line. The method provided by the invention has the advantages that the wiring is convenient to perform, the testing items of all lightning arrester units can be completed through one-step wiring, the repetitive replacement of wires is avoided, the time of power outage is shortened, the time and the labor are saved and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of electric power comprehensive measurement, and in particular relates to a primary wiring device and method for testing the reference voltage and leakage current of a 1000kV arrester. Background technique [0002] Surge arresters of 220kV and above are usually composed of single-phase multi-sections connected in series. The higher the voltage level, the more sections there are. 1000kV arresters are usually composed of 5-section units connected in series. In the power comprehensive measurement technology, the traditional test method of arrester DC reference voltage and leakage DC current test is carried out section by section. When measuring the surge arrester composed of multi-section units in series, it needs to be measured section by section, resulting in repeated wiring. Moreover, when measuring the arrester unit of the upper section, it is necessary to remove the lead wire once, resulting in long wirin...

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Application Information

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IPC IPC(8): G01R19/00G01R31/02G01R1/04
Inventor 周志成赵科王静君孙秋芹陈杰陈娜
Owner STATE GRID CORP OF CHINA
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