分析了电力系统电磁环网运行存在的问题，电磁环网运行必须具备的条件。
The problems and the conditions of electromagnetic loop network operation in Hunan Power System are analyzed.
由于大量的环网运行方式，尤其是电磁环网运行方式，造成电网短路电流超出开关设备容量。
Large number of loop operation, especially the electromagnetic loop operation, has made the fault current excess the switch capacity.
通过严格的理论推导，论证了自适应电流速断保护不仅适用于单回线运行方式，同样适用于双回线或环网运行方式。
Strict theoretical deduction shows that adaptive current fast - tripping protection can be used not only on single - circuit line, but also on double - circuit line.
围绕该装置的技术要求、工作原理设计，以及它对通信设备安全、环网正常运行所起的积极作用进行了论述。
This paper discusses the technical requirement and working principle of this equipment. It also discusses positive function to communication equipment security and normal operation of ring network.
该系统能适应弱环网等复杂的配网运行方式，并能快速准确地计算出低压配网中每条馈线的功率损耗情况，为低压配网线损的分析与管理提供可靠的基础。
It can calculate the power losses of each feeder rapidly and correctly and provide reliable foundation for the analysis and management of the power losses in low voltage distribution network.
在环网对接点实现有效保护，对全网的安全运行起着举足轻重的作用。
Realizing effective protection for the loop interconnecting nodes plays an important role in ensuring network security.
在环网对接点实现有效保护，对全网的安全运行起着举足轻重的作用。
Realizing effective protection for the loop interconnecting nodes plays an important role in ensuring network security.
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