电力建设2025，Vol.46Issue(5)：47-55,9.DOI:10.12204/j.issn.1000-7229.2025.05.005
含多馈入直流的受端电网大功率缺额智能处理技术研究及应用
Research and Application of Intelligent Processing Technology for High-Power Shortage in Receiving End Power Grid with Multiple DC Inputs
摘要
Abstract
[Objective]Power grids face challenges in managing steady-state automatic and collaborative prevention and control measures,particularly owing to issues such as DC blocking,large unit tripping,and reliance on manual scheduling for the rapid response from resources including pumped storage and electrochemical energy storage.These have resulted in challenges in ensuring the frequency safety,regional control deviations,and minimizing the risk of load shedding.To address these issues,an intelligent processing method is proposed for high-power shortage in receiving-end power grids comprising multiple DC inputs.[Methods]This method automatically detects power grid shortage faults,calculates the total regulation demand,and allocates the demand based on prioritized criteria,including resource availability,operating conditions,and unit capabilities,considering the characteristics of the control object and various safety constraints.Control instructions are generated by employing strategies that incorporate available capacity statistics,shortage startup judgment,regulation demand allocation,control of pumped and energy storage systems,safety constraints,and control recovery.This approach facilitates the remote activation of multiple types of fast regulation resources,enabling rapid stabilization of the grid during steady-state power shortage.[Results]Using this method,the first domestic high-power-shortage intelligent processing system for power grids was developed and successfully implemented in a large-scale DC receiving-end provincial power grid.The control effect and reliability satisfied the actual usage requirements.[Conclusions]The application of the proposed methodology in handling steady-state high-power shortages in power grids represents a significant shift from manual telephone scheduling to automatic intelligent processing.This transition reduces decision-making time from minutes to seconds,thereby substantially improving fault-handling efficiency,and ensuring the stability of the power grid frequency and interconnection line power.Operational testing demonstrated the practicality and high reliability of the system,underscoring its potential for broader adoption and implementation in other power grid systems.关键词
新型电力系统/调度控制/自动发电控制/大功率缺额/抽水蓄能控制/储能控制Key words
new power system/dispatching and control/automatic generation control/high power shortage/pumped storage control/energy storage control分类
信息技术与安全科学引用本文复制引用
张强,李娜,吴继平,刘建涛,王明强,蔺晨晖..含多馈入直流的受端电网大功率缺额智能处理技术研究及应用[J].电力建设,2025,46(5):47-55,9.基金项目
国家重点研发计划项目(2022YFB2402900) （2022YFB2402900）
国家电网有限公司科技项目"面向高比例分布式新能源的地区电网有功调控关键技术研究及应用"(520626230061) （520626230061）
国网山东省电力公司科技项目"应对新型电力系统充裕性风险的多元资源主动协调控制技术研究"(520626230003) This work is supported by the National Key R&D Program of China(No.2022YFB2402900),Science and Technology Project of State Grid Corporation of China"Research and Application of Key Technologies for Regional Power Grid Active Control with High Proportion of Distributed New Energy"(No.520626230061)and State Grid Shandong Electric Power Company Science and Technology Project"Research on Active Coordination and Control Technology of Multiple Resources to Cope with the Adequacy Risk of New Power System"(No.520626230003). （520626230003）
