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在使用中接地电阻柜主要体现出哪些功能

网址:www.jiedixiang58.com  2020-07-03  作者:admin    阅读:

电力系统接地运行方式能够涉及到电网的安全运行、供电的可靠性、用户用电的安全等等诸多的重要问题。在专业技术方面涉及到电力系统、过电压与绝缘配合、继电保护、通信与自控、电磁兼容、接地设计等诸多的领域,是一个内容比较广泛的系统问题。
The grounding operation mode of power system can involve many important problems, such as the safe operation of power grid, the reliability of power supply, the safety of users' power consumption and so on. In terms of professional technology, it involves many fields, such as power system, overvoltage and insulation coordination, relay protection, communication and automatic control, electromagnetic compatibility, grounding design and so on.
其中,中性点经接地电阻柜就是在电网中性点与地之间串联的接入某一电阻柜。适当选择所接电阻柜的阻值,不仅可以泄放单相接地电弧后半波的能量,从根本上减少电弧重燃的可能性,抑制电网过电压的辐值,还可以提高继电保护装置的灵敏度用以作用于跳闸,从而有效的保护系统的正常运行。
Among them, the neutral point through the grounding resistance cabinet is connected to a resistance cabinet in series between the neutral point and the ground. Proper selection of the resistance value of the connected resistance cabinet can not only release the energy of the second half wave of the single-phase grounding arc, fundamentally reduce the possibility of arc re ignition, inhibit the radiation value of the grid overvoltage, but also improve the sensitivity of the relay protection device to act on tripping, so as to effectively protect the normal operation of the system.
在交流电网中,特别是以电缆供电的网络采用接地电阻柜日益广泛。变压器中性点接地电阻柜是包括接地变压器在内的成套的接地设备,可安装于发电厂厂用电系统、变电所的供电系统、工矿企业的配电系统中,实现这些电网采用中性点经接地电阻柜的系统运行方式。
In AC network, especially in the network supplied by cable, grounding resistance cabinet is widely used. Transformer neutral point grounding resistance cabinet is a complete set of grounding equipment including grounding transformer, which can be installed in auxiliary power system of power plant, power supply system of substation and power distribution system of industrial and mining enterprises to realize the system operation mode of neutral point through grounding resistance cabinet in these power grids.

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