微网高渗透并网仿真及电网无功优化

Simulation on micro-grid high penetration integration and the reactive power optimization of the power network

将分布式电源以微网的形式并入配电系统中,研究其在能量高渗透情况下对配电网的影响。研究结果表明,在变功率输出控制模式下,含微网的配电系统将可能改变整个输电网的能量分布,因此有必要对输电网运行进行动态优化。考虑到实际优化中电容器组和可调变压器分接头的调节操作受一定限制,故采用了分时段解耦的简化策略,结合人工智能优化算法对电网进行了动态无功优化。此外,相关结果表明,对接入微网的配电网进行合理的无功就地补偿,可有效地降低系统网损,提高电网运行经济性。

The distributed generation with maximum utilization was integrated to the distribution network in the shape of micro-grid, which was used to study the effects of micro-grid to the distribution network. The simulation results showed that the integration of distribution system with micro-grids under the control mode of variable power would change the energy distribution of the whole transmission. It is necessary to optimize the transmission network.Considered the action times of capacitor banks and transformer taps, the actual optimization is simplified with the divided-period decoupling strategy, and conbined artificial intelligence optimization algorithms used for the dynamic reactive power optimization of the transmission network.In addition,the related results showed that the compensation of the reactive power for the distribution network with micro-grids reasonably, which could reduce the network losses, and enhance the operation economy of network.