N+1混合无功补偿系统的研究

提出了一种采用N组电容器和1台静止无功补偿器构成的N+1混合无功补偿系统，电容器组采用2进制编码。给出了2进编码电容器组的投切策略和基于瞬时无功功率理论的静止无功补偿器的控制方法。与传统的电容器无功补偿结构相比，该混合补偿结构可实现连续无功补偿；与单独的静止无功补偿器相比，可大大降低成本。无功补偿案例的仿真结果验证了上述系统和方案的正确性和有效性。

A Hybrid Reactive Power Compensation System Consisting of Multi Capacitor Banks and a SVG

A hybrid reactive power compensation system that consists of binary-coded N-capacitor banks and a static var generator(SVG) is proposed.The energizing and deenergizing strategy for the binary-coded capacitor banks as well as the control method for SVG based on the theory of instantaneous reactive power are given.Comparing with traditional reactive power compensation by capacitor banks,the proposed hybrid compensation system can implement continuous reactive power compensation;comparing with single SVG,its cost can be greatly reduced.Simulation results of the case of reactive power compensation validate the correctness and effectiveness of the proposed hybrid compensation system and scheme.