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Phase-zero sequence integrated voltage sensor for sulfur hexafluoride circuit breaker

A voltage sensor, sulfur hexafluoride technology, applied in the direction of only measuring voltage, measuring current/voltage, instruments, etc., can solve the problems of high withstand voltage requirements, narrow space, slow response, etc., to overcome narrow frequency band, wide measurement range , the effect of ensuring safety

Inactive Publication Date: 2020-02-07
JIANGSU JINGJIANG INSTR TRANSFORMER FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the switch of sulfur hexafluoride circuit breaker; small size, narrow space, high pressure resistance requirements; traditional electromagnetic sampling device has shortcomings such as narrow frequency band and slow response; therefore, a phase zero sequence for LW3 sulfur hexafluoride circuit breaker is developed The integrated voltage sensor provides voltage acquisition signals for the power distribution terminal FTU / DTU. A multi-functional integrated three-phase intelligent voltage sensor with voltage sampling, measurement, protection, zero sequence, and discharge is imminent

Method used

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  • Phase-zero sequence integrated voltage sensor for sulfur hexafluoride circuit breaker
  • Phase-zero sequence integrated voltage sensor for sulfur hexafluoride circuit breaker

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Embodiment Construction

[0014] In order to make the purpose of the invention, technical solutions and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods;

[0015] In the accompanying drawings: a phase-zero-sequence integrated voltage sensor for a sulfur hexafluoride circuit breaker, including phase-sequence circuits and zero-sequence circuits of phase A, phase B, and phase C; it is characterized in that: the phase A, phase B The phase and C phase circuits include primary insert 1 at the high voltage end. The primary insert 1 at the high voltage end is set above the high voltage primary capacitor fixing block 2, and the capacitor fixing block 2 runs through the high voltage end phase zero-sequence integrated polypropylene from top to bottom. Capacitor 4, high-voltage end phase zero-sequence integrated polypropylene capacitor 4 is provided with a p...

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Abstract

The invention discloses a phase-zero sequence integrated voltage sensor for a sulfur hexafluoride circuit breaker. A high-voltage end primary insert is arranged above a high-voltage primary capacitorfixed block, the capacitor fixed block penetrates through a high-voltage end phase-zero sequence child-mother integrated polypropylene capacitor from top to bottom, a primary capacitor internal connecting wire is arranged on a left side of the high-voltage end phase-zero sequence child-mother integrated polypropylene capacitor, a low-voltage end secondary insert is arranged at the left end of theprimary capacitor internal connecting wire, a secondary capacitor junction box is arranged on the left side of the low-voltage end secondary insert, and a low-voltage end phase sequence polypropylenecapacitor and a low-voltage end zero sequence polypropylene capacitor are arranged in the secondary capacitor junction box. The integrated voltage sensor disclosed by the invention is suitable for being matched with an LW3 sulfur hexafluoride circuit breaker; through the intelligent combination of internal circuits, the multifunctional requirements of three-phase voltage sampling, measurement, protection, zero sequence and discharge are integrated, and the voltage sensor is applied to the LW3 sulfur hexafluoride circuit breaker switch of power distribution equipment, and can really achieve theprimary and secondary deep integrating.

Description

technical field [0001] The invention relates to the field of voltage sensors, in particular to a phase-zero-sequence integrated voltage sensor for sulfur hexafluoride circuit breakers. Background technique [0002] In order to meet the requirements of the fine management of the national grid line loss and realize the measurement of the line loss of the distribution network, it is necessary to put forward new requirements for the voltage sensor of the primary equipment to meet the requirements of measurement accuracy. With the rapid development of electronic technology, microcomputer relay protection devices gradually occupy a dominant position. In relay protection and measurement, the energy flow and information flow of the control part are separated, so the monitoring equipment no longer needs high-power output sensors. sampling. At the same time, due to the rapid development of the power industry and the more complex grid conditions, smart current and voltage transformers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0084
Inventor 陆汉兵杨桂平周楠于杰沙亮
Owner JIANGSU JINGJIANG INSTR TRANSFORMER FACTORY
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