Development of auxiliary optimization parameter system for smart AVC in Hebei grid

Proposing the optimal AVC coordinating parameters and comparing effects of different planning grid in an scientific manner is one of the functional characteristics of smart AVC. In this paper Auxiliary Optimization Parameter(AOP) system is developed in Hebei grid for this purpose. With the AOP system, the traditional AVC system can be developed to smart AVC system.. The data of the system are taken from EMS. The state estimation is carried out periodically after obtaining real-time data. Taking state estimation results as the basic power flow and simulating AVC operations, the voltage variations and line loss analysis can be calculated for comparison. The structure, hardware configuration and data exchange of the system are illustrated. Finally, several analysis tools of the AOP system are introduced. With the system, it can be evaluated that effects of reducing line loss benefited from the AVC operations. It can propose coordinating priority of generators or on-load regulating transformers. Also it can provide the optimal AVC coordinating parameters and the optimal grid plans, which lead to better voltage control and better layout of reactive power compensation equipments.