基于SMES的D-STATCOM提升配电网电能质量的研究

配电网位于电力系统终端，直接面向电力用户，因此由电气设备产生的电能质量问题将直接影响配电网的安全运行。为了解决配电网中存在的电能质量问题，本文提出了基于SMES的D-STATCOM组合结构，并提出了相应的控制及优化策略。基于SMES的D-STATCOM能对配电网中的有功、无功功率进行快速补偿，从而有效地控制系统频率和母线电压。通过改进的粒子群算法对基于SMES的D-STATCOM进行参数优化，可以使负荷母线电压、功率波动以及设备成本最小化。仿真结果表明，采用SMES作为储能装置的D-STATCOM较传统的D-STATCOM在配电网中能获得更好的电能质量指标。

Power Quality Improvement of Distribution Network Using D-STATCOM with SMES

Distribution network is located in the terminal of the power system, directly facing the power consumers, so the power quality problems caused by different electricity demand will directly affect the safe operation of the distribution network. In order to solve the problem of power quality, this paper puts forward a combined device of D-STATCOM and superconducting magnetic energy storage system (SMES). The control strategy and the optimization strategy of the combined device are also proposed. The D-STATCOM with SMES can compensate the active power and reactive power in the distribution network, so that the frequency of the system and voltage of the bus can be effectively controlled. Based on the optimized configuration of the D-STATCOM with SMES by the improved particle swarm optimization algorithm(IPSO), the voltage and power fluctuations of the bus and the equipment costs are minimized. The simulation results show that, SMES as an energy storage device combined with D-STATCOM can get better power quality in the distribution network than the conventional D-STATCOM.