计及设备损耗成本的含光储配电网分布式电压控制策略
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TM72

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国网江苏省电力有限公司科技项目(J2022017)“配置储能的高渗透分布式光伏主动支撑技术研究”


Distributed voltage control strategy of distribution network with photovoltaic and energy storage considering equipment loss cost
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Science and Technology Project of State Grid Jiangsu Electric Power Co., LTD

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    摘要:

    针对分布式光伏接入配电网带来的电压越限问题,考虑电池储能与光伏逆变器的调压经济性,文中基于一致性算法提出一种计及设备寿命损耗成本的分布式电压控制策略。首先,分析光伏逆变器与储能的调压机理,推导出可用于分布式迭代计算的配电网电压灵敏度参数;其次,分别建立储能电池与光伏逆变器的寿命损耗模型,并利用寿命损耗模型推导出单位功率成本模型,再结合电压灵敏度参数构建出单位调压成本模型;最后,以单位调压成本作为一致性变量,设计基于一致性算法的分布式电压控制策略,得到各节点储能与光伏逆变器的功率调节方案。算例结果表明,所提控制策略能够兼顾各节点设备寿命损耗与总体调压经济性,在有效抑制电压越限的前提下充分降低配电网电压控制成本。

    Abstract:

    Aiming at the voltage violation problem caused by distributed photovoltaic connected to the distribution network, a distributed voltage control strategy based on consistency algorithm is proposed considering the economy of voltage regulation of battery energy storage and photovoltaic inverters. Firstly, the voltage regulation mechanism of photovoltaic inverter and energy storage is analyzed, and the voltage sensitivity parameters of distribution network which can be used for distributed iterative calculation are deduced. Secondly, life loss models for energy storage batteries and photovoltaic inverters are established separately. These models are employed to derive unit power cost models. Unit voltage regulation cost models are then constructed by combining the voltage sensitivity parameter. Finally, with the unit voltage regulation cost as the consistency variable, a distributed voltage control strategy based on the consistency algorithm is designed, resulting in power regulation schemes for each node's energy storage and photovoltaic inverter. The simulation results demonstrate that the proposed control strategy can consider the lifetime loss of each node equipment and the overall voltage regulation economy, and fully reduce the voltage control cost of distribution network on the premise of effectively inhibiting voltage violation.

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姚璐勤,王琦,李妍,杜渐,成硕,胡迪.计及设备损耗成本的含光储配电网分布式电压控制策略[J].电力工程技术,2023,42(6):52-63

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  • 收稿日期:2023-04-20
  • 最后修改日期:2023-07-04
  • 录用日期:2023-03-20
  • 在线发布日期: 2023-11-23
  • 出版日期: 2023-11-28
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