| 引用本文: | 袁森,陈得治,罗亚洲,任建文,宋云亭,贾琳,訾鹏,王青,李再华,张晨,李媛媛,袁珩迪,黄夏楠.直流闭锁冲击弱交流通道的稳定特性及多资源协调控制措施[J].电力自动化设备,2018,(8): |
| YUAN Sen,CHEN Dezhi,LUO Yazhou,REN Jianwen,SONG Yunting,JIA Lin,ZI Peng,WANG Qing,LI Zaihua,ZHANG Chen,LI Yuanyuan,YUAN Hengdi,HUANG Xianan.Stability characteristics and coordinated control measures of multi-resource for DC blocking fault impacting weak AC channel[J].Electric Power Automation Equipment,2018,(8): |
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| 直流闭锁冲击弱交流通道的稳定特性及多资源协调控制措施 |
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袁森1, 陈得治2, 罗亚洲3, 任建文1, 宋云亭2, 贾琳3, 訾鹏3, 王青2, 李再华2, 张晨2, 李媛媛2, 袁珩迪1, 黄夏楠2
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1.华北电力大学电气与电子工程学院，河北保定071003;2.中国电力科学研究院有限公司，北京100192;3.国家电网公司华北电力调控分中心，北京100053
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| 摘要: |
| 电网建设过渡期“强直弱交”背景下，直流闭锁冲击弱交流通道的运行风险、防控难度和代价进一步加大，相关的特性和防控措施研究亟待深化与细化。依托实际电网，从以下3个方面仿真分析了直流闭锁冲击弱交流通道的稳定风险：弱交流通道与故障直流两者送受电不同方向的耦合风险、不同初始功率的交流通道承载直流冲击的风险、输送不同功率的单直流闭锁及多直流同时闭锁的冲击风险。针对防控上述冲击的传统切负荷安控存在的单一化、代价过大等不足，梳理并分析了抽蓄切泵、直流功率调制及精准切负荷等多种安控资源的特点，建立了多资源协调控制的优化模型，启发式地确定了参与协调控制的多资源的动作顺序，提出了计及网络安全约束的直流功率调制等多资源控制量的确定方法。实际电网的仿真结果验证了多资源协调控制策略的有效性及其降低控制代价的效果。 |
| 关键词: 强直弱交 直流闭锁 抽蓄切泵 精准切负荷 直流功率紧急调制 协调控制 稳定性 |
| DOI：10.16081/j.issn.1006-6047.2018.08.029 |
| 分类号:TM721 |
| 基金项目:国家电网公司科技项目(多交流特高压通道强耦合大受端电网稳定控制及系统保护方案研究)(XT71-16-043) |
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| Stability characteristics and coordinated control measures of multi-resource for DC blocking fault impacting weak AC channel |
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YUAN Sen1, CHEN Dezhi2, LUO Yazhou3, REN Jianwen1, SONG Yunting2, JIA Lin3, ZI Peng3, WANG Qing2, LI Zaihua2, ZHANG Chen2, LI Yuanyuan2, YUAN Hengdi1, HUANG Xianan2
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1.School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;2.China Electric Power Research Institute, Beijing 100192, China;3.North China Branch of State Grid Power Dispatch & Control Center, Beijing 100053, China
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| Abstract: |
| Under the background of strong DC and weak AC in the transition period of power grid construction, the operation risk, the difficulty and cost of prevention and control for the DC blocking fault impacting on weak AC channel are further increased. Therefore, the researches on the related characteristics and prevention and control measures need to be deepened and refined urgently. Based on the actual power grid, the stability risks of the DC blocking fault impacting on weak AC channels are simulated and analyzed from the following three aspects: the coupling risk between the weak AC channel and the faulty DC in the different directions of transmission and reception, the risk of bearing the DC impact for the AC channel with different initial power and the impact risk of single DC blocking and multi-infeed DC blocking with different transmission power. The traditional load shedding safety control methods coping with the above impacts have shortcomings of simplification, excessive cost, and so on. The characteristics of multiple safety control resources including pump shedding of pumped storage, emergency modulation of DC power, precise load shedding are sorted out and analyzed. The optimization model of multi-resource coordinated control is established, the action sequence of the multi-resource is determined heuristically, and the determination method of multi-resource control capacity is proposed. Simulative results of the actual power grid verify the validity of the proposed multi-resource coordinated control strategy and the effectiveness of reducing the control cost. |
| Key words: strong DC and weak AC DC blocking pump shedding of pumped storage precise load shedding emergency modulation of DC power coordinated control stability |
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