配电网合解环全过程综合优化调控
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作者单位:

1.云南电网有限责任公司昆明供电局;2.湖南大学电气与信息工程学院 湖南 长沙

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TM743

基金项目:

云南电网有限责任公司科技项目(YNKJXM20190028)


Integrated Optimal Control Strategy of Loop-Closing and Loop-Opening Operation in Distribution Network
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Affiliation:

1.Yunnan Power Grid Co,Ltd Kunming Power Supply Bureau,Yunnan Kunming;2.Colleage of Electrical and Information Engineering, Hunan University

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    摘要:

    配电网合解环操作能实现不停电转供电,提高供电可靠性。为保障合环操作的安全性和解环后配电网运行的经济性及电能质量,本文提出统筹考虑合环、解环全过程的优化调控模型及算法。以无功补偿电容器、变压器分接头、功率可控的分布式电源为调控手段,以合环前调控和解环后调控的设备动作总次数最少、合环时环网馈线段的最大负载率最小、解环后网损及电压偏差最小为调控目标,建立合解环综合优化调控数学模型;利用配电变压器的历史负荷推算配电网负荷功率,提高合解环潮流计算的准确性;采用多目标粒子群算法对调控优化模型求解,获得合解环的Pareto最优调控方案集。配电网在不同场景下的合解环仿真结果,验证了所提调控方法的有效性。

    Abstract:

    The loop-opening and loop-closing operation can avoid outage when switching power supply, and then improve the reliability of distribution network. In order to ensure the safety of loop-closing operation, as well as the economy and power quality after loop-opening, an optimal control strategy considering the whole process of loop-closing and loop-opening operation was proposed. Compensation capacitors, transformer taps and distributed generation were used as control means, and control target was set to minimize all the regulation times in loop-closing and loop-opening, the maximum load rate during loop-closing, the network loss and voltage deviation after loop-opening. The historical load of distribution transformer was used to calculate the load power of distribution network, which improved the accuracy and real-time of power flow calculation. After the mathematical optimal model was established, the multi-objective particle swarm optimization algorithm was used to get the Pareto optimal set of control schemes. The simulation results of a practical example in different scenarios verified the effectiveness of the proposed control strategy.

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  • 收稿日期:2021-05-20
  • 最后修改日期:2021-07-27
  • 录用日期:2021-09-11
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