考虑可靠性需求的配网多种设备统一优化配置方法

doi:10.19595/j.cnki.1000-6753.tces.221792

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摘要随着电力体制改革的纵深推进,为用户提供高品质、定制化的供电可靠性服务是未来电力企业的重要任务之一。优化配置配网设备是实现可靠性服务高效供应的重要基础。为进一步提升可靠性服务供应的灵活性、准确性、经济性,本文提出了一种考虑用户可靠性需求的配网多种设备统一优化配置方法。首先,基于网络拓扑结构与设备作用特性分析,构建了设备操作能力指示矩阵;其次,基于所提矩阵,结合设备组合动作机制与设备动作性能分析,引入中间变量并构建约束以解析设备安装决策变量与用户可靠性指标变量之间的关系;再次,综合考虑设备投资成本与用户差异化可靠性需求,建立了配网多种设备统一优化配置的混合整数线性规划模型,包含分段开关、断路器、外部联络线、内部联络线、联络开关、备用线、电源切换开关、负荷控制开关等设备;最后,基于83节点的某区域配电网进行仿真分析,结果表明所提方法可充分发挥不同设备的作用特点与组合作用优势,提升设备配置的经济性与可靠性服务供应的灵活性。

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	王怡
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关键词 ：配电网, 开关, 联络线, 可靠性, 停电时间, 设备优化配置, 混合整数线性规划

Abstract：With the deepening of power system reform, providing high-quality and customized power supply reliability services to users is one of the important tasks of electricity enterprises in the future. Optimizing the placement of devices in the distribution network is an important foundation to realize an efficient supply of reliability services. However, the existing routing methodologies-based device placement modeling approaches ignore some combination actions of different devices and do not apply to the unified optimal placement problem for multiple types of devices with complex combination action mechanisms. To further improve the flexibility, accuracy, and economy of reliability service supply, this paper proposes a unified optimal placement method for multiple types of devices in distribution networks considering reliability demand.
Firstly, based on the analysis of network topology and device action characteristics, the device operation ability indicator matrix is constructed; secondly, based on the proposed matrix, combining the analysis of device combination action mechanism and device action performance, intermediate variables including action situation variables of the single device, the same type device combination, and the multiple types device combination are introduced are introduced and corresponding constraints are constructed to describe the relationship between device placement decision variables and user reliability index variables; thirdly, considering the investment, operation and maintenance cost of the devices and users’ differentiated reliability demand, a unified optimal placement model of multiple devices is established, formulated as a mixed integer linear programming problem, including sectional switches, circuit breakers, external tie lines, internal tie lines, tie line switches, backup lines, power switching switches, load control switches, etc.
The numerical simulation is developed based on the regional distribution network, which contains 11 substation nodes, 83 load nodes, 166 sectional switch or circuit breaker installation locations, and 50 tie line installation locations. It is assumed that the system contains three types of users A, B, and C, where the reliability level requirements or outage costs are highest for A users and lowest for C users. To verify the effectiveness and necessity of the proposed method, this paper sets up 9 comparison cases in each of the two situations of rigid and flexible reliability demand, according to the types of devices in the joint optimal placement. From case 1 to case 9, the types of devices considered in the joint optimal placement model increase gradually.
The following conclusions can be drawn from the simulation analysis: 1) considering rigid reliability demand, as the types of device increase, the rigid reliability demand of all users can be satisfied, and the total investment, operation and maintenance cost of the devices decreases; 2) considering flexible reliability demand, as the types of device increase, the total system cost, including the total investment, operation and maintenance cost of the devices, and the outage cost of users, decreases significantly; 3) considering flexible reliability demand, as the types of devices increase, the average interruption duration of all types of users shows a decreasing trend. The above conclusions indicate that the proposed method can give full play to the characteristics and combined effects of the multiple types of devices, and effectively improve the economy of device allocation and flexibility of reliability service supply.

Key words： Distribution network switch tie lie reliability interruption duration device optimal placement mixed integer linear programming

收稿日期: 2022-09-21

PACS:

基金资助:国家自然科学基金资助项目（U2066209）

通讯作者: 杨知方男,1992年生,博士,研究员,博士生导师,研究方向为电力系统优化、电力市场等。E-mail：zfyang@cqu.edu.cn

作者简介: 王怡女,1998年生,博士研究生,研究方向为电力市场、电力系统规划等。E-mail：20153529@cqu.edu.cn

引用本文:

王怡, 杨知方, 余娟, 刘俊勇. 考虑可靠性需求的配网多种设备统一优化配置方法[J]. 电工技术学报, 0, (): 94-94. Wang Yi, Yang Zhifang, Yu Juan, Liu Junyong. A Unified Optimal Placement Method for Multiple Types of Devices in Distribution Networks Considering Reliability Demand. Transactions of China Electrotechnical Society, 0, (): 94-94.

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