| 引用本文: | 董希建,罗剑波,李雪明,等.交直流混联受端电网频率紧急协调控制技术及应用[J].电力系统保护与控制,2018,46(18):59-66.[点击复制] |
| DONG Xijian,LUO Jianbo,LI Xueming,et al.Research and application of frequency emergency coordination and control technology in hybrid AC/DC power grids[J].Power System Protection and Control,2018,46(18):59-66[点击复制] |
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| 交直流混联受端电网频率紧急协调控制技术及应用 |
| 董希建,罗剑波,李雪明,李碧君,万芳茹,薛峰,王忠明,李志辉 |
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| (南瑞集团国网电力科学研究院有限公司, 江苏 南京 211106 ;智能电网保护和运行控制国家重点实验室，江苏 南京 211106) |
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| 摘要: |
| 交直流混联受端电网大频差事故下的频率稳定控制是个难题，之前主要依靠电源侧的一次调频响应以及负荷侧的低频减载措施。随着直流功率紧急支援、抽蓄切泵和大规模可中断负荷控制等新型可控资源以及相应新控制技术的出现，全面提升和拓展频率紧急控制技术成为可能。系统性地分析了实现频率紧急全过程控制需要攻克的关键技术，重点阐述了频率紧急协调控制技术中的故障可靠识别、功率损失量准确计算、多防线协同、多措施分类协调、系统监视与管理等核心技术。基于上述关键和核心技术构建了华东电网频率紧急协调控制系统，保障了华东电网的安全稳定运行，提升了新能源的消纳能力。 |
| 关键词: 特高压直流 交直流混联 多直流馈入 大频差 直流功率紧急支援 可中断负荷 多防线协同 |
| DOI：10.7667/PSPC201823 |
| 投稿时间：2018-01-15修订日期：2018-06-15 |
| 基金项目:国家电网公司总部科技项目资助“分区电网安全稳定控制系统功能及可靠性闭环验证关键技术研究” |
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| Research and application of frequency emergency coordination and control technology in hybrid AC/DC power grids |
| DONG Xijian,LUO Jianbo,LI Xueming,LI Bijun,WAN Fangru,XUE Feng,WANG Zhongming,LI Zhihui |
| (NARI Group Corporation State Grid Electric Power Research Institute, Nanjing 211106, China;State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China) |
| Abstract: |
| It is a great challenge to keep frequency stable under the condition of large frequency difference in AC/DC hybrid terminal grid. At present, when it happens, the major measures include primary frequency modulation on the power side and under frequency load shedding on the load side. But now, DC power emergency support, units operating in a pumping condition and large-scale interruptible load can be controlled, and the technologies to control them can also be applied. It is possible to comprehensively upgrade and extend the emergency frequency control technology. This paper systematically analyzes the key technologies that need to be overcome to realize the whole process control of frequency emergency, and emphatically expounds technologies such as fault identification, accurate power loss calculation, multi-line coordination, coordination of many measures, system monitoring and management and so on. Based on the above key and core technologies, the Frequency Emergency Coordination Control System (FECCS) of east China power grid is constructed, which ensures the safe and stable operation of east China power grid and improves the consumption capacity of new energy. This work is supported by Science and Technology Project of State Grid Corporation of China “Research on Key Technologies of Close-loop Verification for Security and Stability Control System Functions and Reliability of District Grid”. |
| Key words: UHVDC hybrid AC/DC power grids multi-infeed DC large frequency difference DC power emergency support interruptible load multi-line coordination |
