\r于 浩，刘家恺，宋关羽，张孟珍，冀浩然，王成山\r
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AuthorsHTML:\r于 浩，刘家恺，宋关羽，张孟珍，冀浩然，王成山\r
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AuthorsListE:\rYu Hao，Liu Jiakai，Song Guanyu，Zhang Mengzhen，Ji Haoran，Wang Chengshan\r
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AuthorsHTMLE:\rYu Hao，Liu Jiakai，Song Guanyu，Zhang Mengzhen，Ji Haoran，Wang Chengshan\r
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Unit:\r智能电网教育部重点实验室(天津大学)，天津 300072\r
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Unit_EngLish:\rKey Laboratory of Smart Grid of Ministry of Education，Tianjin University，Tianjin 300072，China\r
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Abstract_Chinese:\r考虑有源配电网中多种可调度资源及其故障状态下的运行模式，本文提出了一种基于二阶锥规划的有源配电网多时段负荷恢复方法．充分考虑光伏、风电等间歇性分布式电源的时序特征，建立了有源配电网多时段负荷恢复模型，将供电恢复与孤岛划分统一建模，为含有大量整数变量的非凸非线性规划问题，进一步提出线性化和二阶锥松弛转化方法，得到可快速求解的混合整数二阶锥规划模型；基于改进的IEEE 33 节点算例，验证了本文提出的负荷恢复方法在不同故障场景下的有效性．结果表明，本文方法通过网络重构、储能系统以及可控分布式电源的协同运行，能够在负荷所在区域完全失电时，通过孤岛运行模式，负荷恢复比例由50.1%提高至65.9%；在部分失电的情况下，通过供电恢复策略，将配电系统恢复供电比例由51.8%提高至86.5%，有效提升故障状态下系统的负荷恢复水平．\r
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Abstract_English:\rLoad restoration from outages is one of the important means to improve the reliability of active distribution networks(ADNs)and has great significance for providing customers with a high-quality power supply．Distributed generators(DG)and energy storage systems(ESS)can provide power supply and voltage support for critical loads under extreme fault conditions，improving the level of load restoration of the system efficiently．Considering multiple
dispatchable resources in ADNs and their operation modes，this paper presents a proposed second-order cone programming(SOCP)based multi-time-period load restoration method of ADNs used to restore service for interrupted customers as extreme fault occurs．Considering the time series characteristics of renewables such as photovoltaic arrays(PVs)and wind turbines(WTs)，a multi-time period load restoration model of ADNs is established. The unified
modeling of load restoring and island partition is realized，which belongs to nonconvex nonlinear programming problems with a large number of integer variables. Then，the proposed model is transformed into a second-order cone
programming model by linearization and convex relaxation，which can be solved effectively. Based on the modified IEEE 33-node system，the effectiveness of the proposed method is verified under different scenarios. The results show that the load recovery level in the power totally outage area can be increased from 50.1% to 65.9% by the islanding operation mode with the network reconfiguration and the coordination of ESS and DG operation under extreme fault. And under the condition of the power partial outage，the proposed method can effectively increase the load recovery level of distribution networks from 51.8% to 86.5%，improving the reliability of power supply significantly.\r
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Keyword_Chinese:有源配电网；负荷恢复；分布式电源；网络重构；二阶锥规划\r

Keywords_English:active distribution networks；load restoration；distributed generation；network reconfiguration；secondorder cone programming\r


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