Research Of Model Of SVC Based On Nonlinear PID Control System And Power System Simulation

The quantity of power system voltage is much more relate with distribution of power system reactive load. Static Var Compensator is widely used in now power system to support node voltage and adjust system reactive load distribution for its high performance and lower price. However, There are rarely models of SVC including its control system used to electromagnetic transient simulation in most simulation software. It is important to base on a accurate SVC model to achieve a control system. On this paper, a new TCR-TSC SVC simulation model with nonlinear PID controller which use BP network to find its exact controlling parameter Kp,Ki,Kd is presented in the simulation of power system electromagnetic transient process. Because full considering the relationship between BP network, PID controller and SVC model, the support of SVC to the node voltage and the influence to the power system of SVC are expressed directly and exactly during power system flow calculation and power system electromagnetic transient simulation. It is proved correct on the condition of EastChina 500KV network system fault and each fault under lab system. This paper has competed interfaces between the Simulation software and BPA or PSS/e electrical network calculation software. So it can improve work efficiency by automatic using the data that BPA produces power flow results and that PSS/E software produces equivalence parameters of a network. Further, the simulation software output the simulated current data and voltage data in all kinds of system faults by a general COMTRADE format. So these all benefit the engineering appliance and compatible with other power system simulation softwares.