摘要
近年来,全球变暖导致极端高温事件频发,不仅电力需求显著增加,而且高比例可再生能源配电网发电能力急剧下降,给电力保供带来了巨大的压力。基于此,针对极端高温场景下的用户可靠用电问题,提出一种计及需求响应的配电网动态重构策略。首先,对极端高温场景下的光伏、风机出力以及负荷进行建模,利用场景集和场景缩减法模拟其不确定性。同时,构建考虑用户心理因素的申报量不确定性模型,针对用户需求响应积极性不高、实际响应量与日前申报量偏差过大的问题,提出比例型需求响应激励机制并建立满意度模型以衡量用户对需求响应的满意程度。其次,对负荷类型进行划分,基于不同类型用户可靠性需求,分析其停电损失影响,建立节点停电损失系数矩阵以衡量节点供电优先级。然后,以失负荷成本、需求响应补贴成本和开关动作成本最小为目标,建立了极端高温场景下计及需求响应的配电网动态重构模型。最后,在148节点算例上验证了所提方法的有效性,结果表明所提模型与方法有利于保障极端高温场景下用户的可靠用电。
In recent years,global warming has led to the frequent occurrence of extremely high-temperature events,which not only significantly increases the power demand but also drastically reduces the power generation capacity of distribution grids with a high proportion of renewable energy sources,which puts great pressure on power supply preservation.Based on this,this paper proposes a dynamic reconfiguration strategy of the distribution network that considers demand response to address the problem of reliable power consumption by users under extremely high-temperature scenarios.Firstly,the PV and wind turbine outputs and loads under extremely high-temperature scenarios are modeled,and their uncertainties are simulated by using scenario sets and scenario reduction methods.At the same time,the uncertainty model of the declared amount is constructed by considering the psychological factors of the users,and the proportional demand response incentive mechanism is proposed to address the problems of low motivation of the users to respond to the demand and large deviation of the actual response amount from the amount declared in the previous day,and the satisfaction model is established to measure the satisfaction level of the users to the demand response.Next,load types are divided,and based on the reliability needs of different types of users,the impact of outage loss is analysed,and a node outage loss coefficient matrix is established to measure the priority of node power supply.Then,a dynamic reconfiguration model of the distribution network for extreme high temperature scenarios taking into account demand response is established with the objective of minimizing the cost of lost load,demand response subsidy cost and switch action cost.Finally,the effectiveness of the proposed method is verified on a 148-node system,and the results show that the proposed model and method are conducive to guaranteeing reliable power supply to customers under extremely high-temperature scenarios.
作者
石铖
高红均
罗龙波
陈明辉
朱建昆
刘俊勇
SHI Cheng;GAO Hongjun;LUO Longbo;CHEN Minghui;ZHU Jiankun;LIU Junyong(School of Electrical Engineering,Sichuan University,Chengdu 610065,Sichuan Province,China;Guangzhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Guangzhou 510620,Guangdong Province,China)
出处
《电网技术》
北大核心
2025年第1期136-145,I0055-I0058,共14页
Power System Technology
基金
国家自然科学基金项目(52077146)。
关键词
极端高温场景
需求响应
配电网动态重构
用户可靠用电
extreme heat scenarios
demand response
dynamic reconfiguration
reliable power supply to customers
作者简介
石铖(1999),男,硕士研究生,研究方向为配电网优化、能源互联网等,E-mail:1328964565@qq.com;通信作者:高红均(1989),男,博士,副教授,博士生导师,研究方向为配电网规划运行、综合能源系统优化与市场交易等,E-mail:gaohongjun@scu.edu.cn。
