考虑变压器损耗的配电网无功优化研究

针对传统配电网无功优化未考虑变压器损耗的缺陷,提出了考虑变压器损耗的配电网无功优化模型,优化措施包括电容器无功补偿、变压器有载调压等,通过差分进化算法对改进的IEEE 33节点系统进行仿真计算,研究了不同负荷水平情况下配电系统无功优化结果,并与传统无功优化结果进行对比分析。结果表明,系统轻载情况下,考虑变压器损耗对于配电网无功优化尤为必要,可使配电网无功优化方案更加合理全面。

Optimal Reactive Power Dispatch Considering Transformer Loss

Aiming at the defect that the traditional optimal reactive power dispatch (ORPD) has not taken into consideration of the transformer loss, this paper proposes an ORPD model considering the transformer loss. The optimization measures include reactive power compensation with capacitor and tap adjusting with on load tap changer (OLTC) transformer. Numerical simulation of the modified IEEE 33 node system is testified with differential evolution algorithm (DEA). Optimal reactive power of distribution network is analyzed under different load level. Compared with the traditional optimization model, the results show that the ORPD considering transformer loss is very necessary for light loaded system, which makes ORPD scheme more reasonable and adaptable.