【正文】
pment panies have been developing, the development of the various types of 145550 kV outdoor highpressure and ultrahighpressure bination of electrical appliances, some highvoltage switchgear 2 plant has also started production of 145 k V pact outdoor portfolio electrical appliances. Smart plugin type outdoor switchgear is a more plete highpressure and ultrahighpressure switch system, which includes electrical first and second equipment, as well as the associated fiber optic cable, such as plugtype pound. The entire distributed substation automation system。 substation and the construction area covers an area of reduced substation program to simplify wiring, switchgear, bus and steel pipes, such as the use of stents to substation layout is more simple, the abolition of the former station area and optimize the layout to make a substantial decline in an area substation. With technological advances, the traditional relay protection devices are gradually being replaced by microprocessorbased protection. Microprocessorbased protection is referred to as the protection of PC puter, a digital relay protection, is based on the programmable digital circuit technology and realtime digital signal processing technology of the Power System Protection. At present, both at home and abroad have been developed to 32bit digital signal processor for hardwarebased protection, control, measurement, and data munications integration of microprocessorbased protection control devices, and artificial intelligence technology into a number of relay protection, such as artificial neural works, fuzzy theory to determine the realization of fault type, fault location, the direction of protection, the main equipment and other new methods of protection. By means of wavelet analysis of the theory of digital signal failure of the entire frequency band information and to achieve fault detection. These artificial intelligence technology to improve the accuracy of failure to provide a means of identification, but also some singlefrequency signal based on the traditional method difficult to identify the problems to be resolved. At present, the microprocessorbased relay protection is along the microprocessorbased protection work, and intelligent, adaptive and protection, control, measurement, signal, data munications integration direction. The most basic request that charged barbed wire in the city circulates is safe and core problem of charged barbed wire safety in the city stability