考虑停电损失及可中断负荷的有源配网鲁棒孤岛划分策略
CSTR:
作者:
作者单位:

(广东电网有限责任公司广州黄埔区供电局,广东 广州 510700)

通讯作者:

刘 佳(1986—),女,工程师,主要从事配网运维及规划管理的研究;E?mail:ljdl2020@163.com

中图分类号:

TM71

基金项目:

广东电网有限责任公司科技项目(GZHKJXM20190037)


Robust islanding strategy for active distribution network considering outage loss and interruptible load
Author:
Affiliation:

(Guangzhou Huangpu Power Supply Bureau,Guangdong Power Grid Co., Ltd., Guangdong 510700,China)

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    摘要:

    随着分布式电源、储能及智能环网柜等技术在配电网中的快速发展,配电网的有源化和智能化为其孤岛运行提供了有力支撑。面向上级电网故障后有源配电网(ADN)的孤岛划分问题,建立负荷停电综合损失最小的鲁棒优化划分模型,其中,停电综合损失计及切除可中断负荷的补偿成本和非协议停电所带来的负荷损失成本,损失成本采用分段线性化建模,并通过添加逻辑变量构建统一的线性约束式。为避免孤岛运行状态下任一负荷的频繁投退,提出负荷停电连续状态约束及其线性化方法。进一步考虑到ADN中分布式能源出力的不确定性,将确定性模型转为两阶段鲁棒优化模型,引入鲁棒调节系数灵活调整方案的保守性,并基于对偶理论和列生成算法迭代实现模型求解。算例仿真验证所提模型和方法的有效性。

    Abstract:

    With the rapid development of distributed generation, energy storage and intelligent ring network cabinets in the distribution network, the active and intelligent distribution network provides strong support for its island operation. To solve the problem of islanding of active distribution network (ADN) after a fault in the upper?level power grid, a robust optimal partition model is established with the consideration of the least comprehensive loss of load outage. The comprehensive loss of power outage takes into account the compensation cost of cutting off the interruptible load and the load loss cost caused by non?agreement blackout. The loss cost is modeled by piecewise linearization technique, and a unified linear constraint is constructed by adding logical variables. In order to avoid the frequent switching on and off of any load in the island operation scheme, the continuous state constraint of load power failure and its linearization method are proposed. Further, considering the uncertainty of the output characteristics of distributed energy in ADN, the deterministic model is transformed into a two?stage robust optimization model, and the flexible adjustment scheme of robust adjustment coefficients is introduced to adjust the scheme conservativeness. At the same time, the model is solved based on duality theory and column generation algorithm. Cases studies verify the effectiveness of the proposed model and method.

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刘 佳,罗惠雄,张小华,等.考虑停电损失及可中断负荷的有源配网鲁棒孤岛划分策略[J].电力科学与技术学报,2023,38(2):141-149.
LIU Jia, LUO Huixiong, ZHANG Xiaohua, et al. Robust islanding strategy for active distribution network considering outage loss and interruptible load[J]. Journal of Electric Power Science and Technology,2023,38(2):141-149.

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