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A performance detection system and method of a gis partial discharge on-line monitoring device

A technology of partial discharge and monitoring device, applied in the direction of testing dielectric strength, etc., can solve the problems of on-site anti-interference ability, partial discharge localization ability, fault pattern recognition ability evaluation, unfavorable condition maintenance, unfavorable power system safe and reliable operation, etc.

Active Publication Date: 2016-05-18
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current GIS partial discharge online monitoring device cannot evaluate its on-site anti-interference ability, partial discharge location ability and fault mode recognition ability before installation, and the power system operation department cannot fully trust the information displayed by the online monitoring device. As a result, the power outage maintenance can only be verified after a problem occurs in the GIS. This situation is not conducive to the safe and reliable operation of the power system, and is also not conducive to the realization of "conditional maintenance"

Method used

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  • A performance detection system and method of a gis partial discharge on-line monitoring device
  • A performance detection system and method of a gis partial discharge on-line monitoring device
  • A performance detection system and method of a gis partial discharge on-line monitoring device

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Embodiment 1

[0026] See attached figure 1 , for the GIS partial discharge on-line monitoring device performance detection system of the present invention, wherein the 250kV transformer and the supporting measurement control system 1 include a 250kV high voltage divider, which is used to divide the high voltage provided by the 250kV transformer, so as to reduce For the convenience of low-voltage measurement, it is intended to build a high-voltage power supply environment for the performance detection system.

[0027] In an example, the parameters of a 250kV transformer are: input voltage: AC: 0-400V; output voltage: 0-250kV, capacity: 250kVA; impedance voltage: <8%; no-load loss: <5%; voltage distortion: < 3%.

[0028] The 250kV transformer and supporting measurement and control system 1 include a 250kV high-voltage divider, which is used to divide the high voltage. In one example, the parameters of the 250kV high-voltage divider are: the divider ratio is 1000:1; the measurement voltage is...

Embodiment 2

[0038] The structure of this embodiment is the same as that of Embodiment 1, the difference is that the partial discharge device for calibrating the online monitoring device 7 can be various commonly used partial discharge devices. Preferably, the partial discharge device is a partial discharge measurement device based on a pulse current method. In one example, the partial discharge measurement device based on the pulse current method is a traceable device, and the specific parameters are: 2 channels, measurement sensitivity: 0.1pC; measurement frequency band: 10kHz-500kHz; pulse resolution time: less than 100μs, gain range -20dB~+40dB four levels adjustable; calibration pulse generator: output standard pulse rising edge less than 60ns, falling edge greater than 100μs, calibration charge error <±5%.

Embodiment 3

[0040] The structure of this embodiment is the same as that of Embodiment 1, only the type of the online monitoring device 7 is further limited. The online monitoring device 7 can be an online monitoring device of an electrical online monitoring method or an online monitoring device of a non-electrical online monitoring method. Among them, the electrical online monitoring methods are external electrode method, ground wire electromagnetic coupling method, embedded electrode method in insulator, and ultra-high frequency detection method. Among them, the non-electrical on-line monitoring methods include mechanical vibration monitoring, gas detection, optical detection and other non-electrical on-line monitoring methods. As mentioned above, the online monitoring device can monitor the partial discharge in the GIS pipeline, and it has an internal sensor, it may also have an external sensor, or it may not have an external sensor.

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Abstract

The invention relates to a performance detecting system and a method thereof of a gas insulated substation (GIS) partial discharge on-line monitoring device. Through a partial discharge measuring device and the GIS partial discharge on-line monitoring device connected to the exterior of a GIS or interior of the GIS of a GIS pipeline, the partial discharge measuring device and the GIS partial discharge on-line monitoring device are compared with each other to detect the performance of the GIS partial discharge on-line monitoring device. The GIS pipeline of the performance detecting system of the GIS partial discharge on-line monitoring device can carry out testing to different on-line monitoring devices, and at the same time, the pipeline with an independent structure is convenient to dismantle and can simulate different insulation defects. Meanwhile, the invention further discloses the method using the performance detecting system to detect the on-line monitoring device.

Description

technical field [0001] The present application relates to the field of high-voltage power transmission, in particular to a performance detection system of a GIS partial discharge on-line monitoring device, and a method for checking the on-line monitoring device by using the system. Background technique [0002] SF 6 Gas Insulated Substation (GIS) is a new type of electrical device that appeared in the 1970s. It combines circuit breakers, disconnectors, fast earthing switches, voltage transformers, current transformers, lightning arresters, some busbars, bushings and / or electrical components such as cable terminals are enclosed and combined in a grounded metal casing, with SF 6 Gas is used as the insulating medium, and epoxy basin insulators are used as supporting insulation for the power transmission bus in GIS, thus replacing the previous method of connecting various electrical equipment with bare wires and using air as insulation in the substation, and its function is e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 王保山刘翔叶国雄郭克勤熊易汤霖付超胡民杰杨亚北彭超张锐黄华代静汪英英刘彬童悦杨帆刘洋于春来
Owner CHINA ELECTRIC POWER RES INST
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