| 引用本文: | 刘宝柱,李梦晨,胡俊杰,谢东亮,常康.计及输电断面传输功率极限松弛风险的电网暂态安全-充裕协调优化[J].电力自动化设备,2026,46(5):172-182 |
| Liu Baozhu,Li Mengchen,Hu Junjie,Xie Dongliang,Chang Kang.Coordinated optimization of transient security-adequacy considering relaxation risk for transmission section power transfer limit in power grids[J].Electric Power Automation Equipment,2026,46(5):172-182 |
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| 摘要: |
| 目前，从安全性角度出发制定的输电断面传输极限过于保守，无法兼顾新型电力系统“安全充裕”的运行需求。为此，提出了一种基于输电断面传输功率极限松弛的安全-充裕协调方法。构造源荷不确定性的典型运行场景，基于暂态安全关键断面识别结果，进一步筛选影响系统充裕性的关键断面子集；构建模型-数据混合驱动的暂态稳定评估方法，以期快速获得不同传输功率极限松弛位置的暂态失稳概率及最优控制成本；建立松弛关键断面传输功率极限的风险模型及充裕性收益，以提高输电综合收益指标为优化目标，搜索最优断面传输功率极限松弛程度，实现电网安全性与充裕性的协调优化。基于IEEE 39节点算例验证了所提方法的有效性。 |
| 关键词: 暂态稳定 运行充裕性 输电断面极限 风险评估 协调优化 |
| DOI：10.16081/j.epae.202511018 |
| 分类号:TM712 |
| 基金项目:江苏省基础研究计划(自然科学基金)资助项目(BK20232026) |
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| Coordinated optimization of transient security-adequacy considering relaxation risk for transmission section power transfer limit in power grids |
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Liu Baozhu1, Li Mengchen1, Hu Junjie1, Xie Dongliang2,3, Chang Kang2,3
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1.School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;2.State Grid Electric Power Research Institute, Nanjing 211100, China;3.NARI Technology Co.,Ltd.,Nanjing 211106, China
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| Abstract: |
| At present, from the perspective of safety, the transmission limits of power transmission sections formulated are overly conservative, and they cannot meet the operational requirements of the new power system for "safety and adequacy". Therefore, a safety-adequacy coordinated method based on the relaxation for transmission section power transfer limit is proposed. Typical operation scenarios characterizing the uncertainty of sources and loads are constructed, based on the identification results of transient security key sections, a subset of key sections affecting system adequacy is further screened. A model-data hybrid-driven transient stability assessment method is constructed to quickly obtain the transient instability probability and the optimal control cost at different positions of the transmission power limit relaxation. A risk model and adequacy benefit of the relaxation for the transmission power limit of key sections are established. With the goal of improving the comprehensive transmission benefit index, the optimal degree of relaxation of the transmission power limit of key sections is searched to achieve the coordinated optimization of the safety and adequacy in power grid. The effectiveness of the proposed method is verified based on the IEEE 39-bus system example. |
| Key words: transient stability operational adequacy transmission section limit risk assessment coordinated optimization |
