【文章內(nèi)容簡介】 veloping, the development of the various types of 145550 kV outdoor highpressure and ultrahighpressure bination of electrical appliances, some highvoltage switchgear 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。 the introduction of advanced work technology。 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 technologies 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 stable. The core problem of charged barbed wire safety in the city stability wants to build up to be a with the city mutually acmodative of, reasonable of charged barbed wire structure. This text passes and programs to the charged barbed wire with electric power and designs the technique principle of the aspect analysis. Elaborated the standard concerning electric voltage grade, power supply credibility, power supply ability and charged barbed wire safe power supply requests etc. some problems that should notice in the charged barbed wire safety。 And have already aimed at sex39。s elaborating request to the concrete design principle opposite charged barbed wire safe power supply of the 220 kV transformer substation and 110kV transformer substation. How to promise power supply credibility 1) Satisfy charged barbed wire power supply safe standard. The power supply work satisfies the request of power supply credibility. The standard that all satisfies Nl, city area center high burden density important customer in the district satisfies the standard of transformer over carry. Help a southern city power supply credibility rate index sign programming target is %. 2) Press to go together with charged barbed wire burden to transfer ability in the city satisfies following request: ① The transformer substation loses any once enter line or one set lord transformer but lower power supply ability, win press to go together with charged barbed wire to have to transfer burden to ensure the ability