Research And Realization Of Increasing Pass Rate Of Supply Voltage Of Client In Distribution Network

Voltage passing rate is an important indicator of power quality, voltage quality is good or bad for the security and economic operation of power systems, to ensure user safety in production and product quality, has an important impact on the safety and life of electrical equipment. With the development of society and power users for power quality requirements continue to increase, the power system to improve power quality, ensure that the voltage passing rate is very important. Voltage failures include voltage is too high or low voltage, no matter what kind, is not conducive to the normal power supply.In view of the problem that the voltage qualification rate of resident client is not high, the subject of this paper proposes voltage and reactive power control strategy from substation, line and distribution transformer. This paper introduces some of the key technology research and implementation ideas, including:substation voltage and reactive power control, that is, the use of voltage regulator reactive power compensation device for reactive power compensation; lOkV line voltage regulator control, that is, 10kV line Section to install the voltage regulator to improve the power supply radius of the long line in the latter part of the voltage level; on.load voltage regulator with variable voltage control, that is, in the distribution of intelligent voltage regulator installed to improve the end of the line voltage level dropped serious situation. Using three.level coordinated control strategy can effectively improve the rural low.voltage problem, in order to maximize the low.voltage client voltage to meet the voltage qualified range.Through the use of three.level system, Longquan company client voltage qualification rate from 82.66% in 2012 to 2015 99.63%, greatly improving the supply voltage pass rate, effectively reducing the line loss, the company's development To a positive role in promoting.