基于需求响应的配电网韧性提升技术研究

Research on improvement technology of distribution network resilience based on demand response

中文关键词: 配电网韧性  需求响应  孤岛恢复  韧性指标

英文关键词: distribution network resilience  demand response  island recovery  resilience index

中文摘要:

      针对频发的极端灾害造成的大规模停电事故，提出了一种计及需求响应的配电网韧性提升技术。梳理配电网韧性基本概念并提出负荷恢复率、分布式能源（distributed generation，DG）利用率两种综合韧性指标，量化评估配电网韧性。建立激励型需求响应节点模型及配电网孤岛韧性模型，针对配电网中DG出力波动性大的特点，提出一种基于需求响应的3阶段配电网韧性提升策略。考虑遭遇极端自然灾害配电网失去主网供电的情形，首先形成初始孤岛，其次利用需求响应技术扩大孤岛范围，最后进行孤岛的动态状态更新。通 过IEEE 改进33节点算例，详细阐述该策略的3阶段过程，并设置两种情景，通过对比量化指标的评估结果，验证策略的有效性及其韧性提升能力。

英文摘要:

      Aiming at the large-scale power outage caused by frequent extreme disasters, a resilience improvement technology of distribution network considering demand response is proposed. Ba-sic concept of distribution network resilience is combed, and two comprehensive resilience indexes, load resilience and DG strength,are put forward to quantitatively evaluate the distribution network resilience. The incentive-based demand response node model and is--land resilience model of distribution network are established. Ac-cording to the characteristics of large fluctuation of DG output in distribution network, a three -stage distribution network resilience improvement strategy based on demand response is proposed. Considering the situation that the distribution network loses the power sup-ply of the main network in the event of extreme natural disasters, an initial island is formed firstly. Then, the demand response technology is used to expand the scope of the island, and finally the dynamic state of the island is updated. Through the improved IEEE 33 node example, the three-stage process of the strategy is described in detail, and two scenarios are set. By comparing the evaluation results of quantitative indicators, the effectiveness and resilience improvement ability of the strategy are verified.