毫秒级精准负荷控制系统装置研制
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摘要
为适应特高压(UHV)交直流电网的发展现状和满足大电网安全综合防御体系的建设需求,研制了精准负荷控制装置。该装置能够实时采集和上传可切负荷量,并依据控制策略、就地频率判据,实现切除负荷量的计算、执行及负荷恢复。同时,该装置能与监控系统、控制总站进行实时通信。从软硬件的设计、实现等方面,对装置进行了优化。采用多层级的精准切负荷控制策略、通信报文多重校验防误和多通道并行处理等关键技术,实现了毫秒级快速切除可中断负荷。该装置最终通过了型式试验。试验结果表明:该装置功能、性能、指标满足设计预期,满足了精准负荷控制系统整体动作时间不大于100 ms的指标要求。
In order to adapt to the development status of ultra high voltage( UHV) AC/DC power grid and to meet the construction requirements of the grid security integrated defense system for large power grid,the precise load control device is researched and developed. The device is capable of real-time collection and uploading of load shedding,and in accordance with the control strategy and the local frequency criterion,the calculation of the cutting load is realized,and load recovery can be executed. In addition,the device can communicate with the monitoring system and the control station in real time. The device is optimized from the aspects of software and hardware design and implementation. By using multi-level precision load shedding control strategy,communication message multi-check error prevention and multi-channel parallel processing and other key technologies,ms-level fast cutoff interruptible load is achieved. The developed device finally passes the type test. The test results show that the function,performance and index of the device meet the design expectations,and the overall action time of the precise load control system is less than 100 ms.
In order to adapt to the development status of ultra high voltage( UHV) AC/DC power grid and to meet the construction requirements of the grid security integrated defense system for large power grid,the precise load control device is researched and developed. The device is capable of real-time collection and uploading of load shedding,and in accordance with the control strategy and the local frequency criterion,the calculation of the cutting load is realized,and load recovery can be executed. In addition,the device can communicate with the monitoring system and the control station in real time. The device is optimized from the aspects of software and hardware design and implementation. By using multi-level precision load shedding control strategy,communication message multi-check error prevention and multi-channel parallel processing and other key technologies,ms-level fast cutoff interruptible load is achieved. The developed device finally passes the type test. The test results show that the function,performance and index of the device meet the design expectations,and the overall action time of the precise load control system is less than 100 ms.
引文
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[12]姚建国,杨胜春,王珂,等.智能电网“源-网-荷”互动运行控制概念及研究框架[J].电力系统自动化,2012,36(21):1-6.
[2]刘振亚.特高压直流输电理论[M].北京:中国电力出版社,2009.
[3]李碧君,黄志龙,刘福锁,等.直流紧急功率支援用于第三道防线的研究[J].中国电力,2016,49(6):72-77.
[4]康礼彦,王克文,王君亮.电网电力系统稳定器的交互影响分析[J].自动化仪表,2013,34(8):5-8.
[5]李兆伟,刘福锁,崔晓丹,等.计及电力安全事故风险的电网动态分区与切负荷协调控制研究[J].电力系统保护与控制,2017,45(1):35-40.
[6]刘伟,郑晓娜,陈世池.含分布式电源的配电网故障重构研究[J].自动化仪表,2016,37(7):11-15.
[7]罗建裕,李海峰,江叶峰,等.基于稳控技术的源网荷友好互动精准负荷控制系统[J].电力工程技术,2017,36(1):25-29.
[8]李碧君,李兆伟,吴雪莲,等.多直流馈入受端电网两段式频率安全紧急控制策略研究[J].中国电力,2017,50(2):169-174.
[9]陈庆,闪鑫,罗建裕,等.特高压直流故障下源网荷协调控制策略及应用[J].电力系统自动化,2017,41(5):147-152.
[10]周坚,黄志龙,祝瑞金,等.大受端电网稳定分析和安全控制策略研究[J].华东电力,2009,37(10):1661-1665.
[11]孙伟卿,杨敬元,潘以周.忻州电网电气化铁路电能质量普测分析[J].自动化仪表,2017,38(7):57-65.
[12]姚建国,杨胜春,王珂,等.智能电网“源-网-荷”互动运行控制概念及研究框架[J].电力系统自动化,2012,36(21):1-6.