1.1 The voltage is the important index of electric energy quality. The voltage quality has important effect on safe and economical operation of power system guaranteeing safe production of user and product quality as well as safety and service life of electrical equipments. This guide specifies the permissible deviation value of the voltage for all-level bus bars and user receiving end of power system and the technical measures of voltage and reactive power regulation.
1.2 The reactive compensation and reactive balance of power system is the essential condition to guarantee voltage quality. The effective voltage control and reasonable reactive compensation not only can guarantee voltage quality, but also improve stability and safety of power system operation, and give full play to economic benefit.
1.3 Each department of power system shall comply with this guide when carrying out planning, design, capital construction, operation and power utilization management working.
