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Single bus grounding insulation monitoring method in three buses and monitoring device

A grounding insulation and monitoring device technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as inability to monitor insulation conditions

Active Publication Date: 2019-04-16
XJ POWER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a single busbar grounding insulation monitoring method and monitoring device in three busbars, which is used to solve the problem that the insulation monitoring method in the prior art cannot ground the single busbar in the positive busbar, negative busbar, and zero busbar three busbars. The problem of monitoring the insulation condition of the

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  • Single bus grounding insulation monitoring method in three buses and monitoring device
  • Single bus grounding insulation monitoring method in three buses and monitoring device
  • Single bus grounding insulation monitoring method in three buses and monitoring device

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Embodiment 1

[0070] This embodiment provides a single-bus-bar grounding insulation detection device in a three-bus bar, which includes a memory, a processor, and a computer program stored in the memory and running on the processor. The process implemented when the processor executes the computer program includes the above method The grounding insulation monitoring method of a single bus in the three bus bars provided in the embodiment.

Embodiment 2

[0072] This embodiment provides a single-bus-bar grounding insulation monitoring device in a three-bus bar, and its structure principle is as follows figure 1 As shown, including the positive bus-to-ground voltage detection module V p , Negative bus-to-ground voltage detection module V n , Zero bus to ground voltage detection module V z And data processing module ( figure 1 Not given in), the positive bus-to-ground voltage detection module V p Used to detect the voltage of the positive bus to the ground U p , Negative bus to ground voltage detection module V n Used to detect the negative bus-to-ground voltage U n , Zero bus-to-ground voltage detection module V z Used to detect zero bus-to-ground voltage U z ; The data processing module detects the positive bus-to-ground voltage U p , Negative bus voltage to ground U n And zero bus-to-ground voltage U z Determine the grounded bus, and then according to the positive bus to ground voltage U p , Negative bus voltage to ground U p , Z...

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Abstract

The invention provides a single bus grounding insulation monitoring method in three buses and a monitoring device. The detection method comprises the following steps of detecting the voltage of a positive bus to ground, the voltage of a negative bus to the ground and the voltage of a zero bus to the ground; according to the detected voltage of the positive bus to the ground, the voltage of the negative bus to the ground and the voltage of the zero bus to the ground, determining an obtained grounded bus; and according to the voltage of the positive bus to the ground, the voltage of the negativebus to the ground and the voltage of the zero bus to the ground, the voltage to the ground corresponding to the grounded bus, the resistance of an access resistor between the positive bus and the ground, the resistance of the access resistor between the negative bus and the ground, and the resistance of the access resistor between the zero bus and the ground, calculating and acquiring a system resistance to the ground. In the technical scheme, a problem that the insulation monitoring method in the prior art can not be used to monitor the insulation condition when the single bus in the three buses of the positive bus, the negative bus and the zero bus is grounded can be solved.

Description

Technical field [0001] The invention belongs to the technical field of single-bus-bar grounding insulation monitoring in three-busbars, and specifically relates to a single-bus-bar grounding insulation monitoring method and monitoring device in three-busbars. Background technique [0002] The energy storage substation is a DC system composed of three busbars. The three busbars are positive busbar, negative busbar, and zero busbar. There is a voltage difference between any two busbars, and the load is selected according to the demand. [0003] Energy storage substations use high-voltage battery packs as the power source. With the large-scale development of energy storage substations, the voltage level of high-voltage battery packs is getting higher and higher, and the stored electric energy is getting larger and larger. Once insulation problems occur, they will seriously threaten The user and electrical equipment are safe. Therefore, in order to ensure the safety of the user's life ...

Claims

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Application Information

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IPC IPC(8): G01R31/02G01R31/12
CPCG01R31/1272G01R31/50
Inventor 王佰超甘江华黄军伟尹强刘建鹏王永峰丁园
Owner XJ POWER CO LTD
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