基于和电流回路误动的新防误系列端子研制
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摘要
通过和电流回路误动的案例,深挖误动根源,发现所有的误碰都发生在端子上,而传统端子没有任何防误措施。从而提出新型防误端子的概念并研发出新型和电流、母差、联跳等系列端子并应用。以和电流回路隐患为例,提出通过改进现有和电流回路试验端子的结构,实现端子操作顺序的唯一性。通过端子固有的机械结构实现闭锁,彻底杜绝在和电流回路上工作出现误动事故。新防误端子杜绝跳项操作,巧妙遮住能误碰的地方,颠覆了传统端子的概念。改变了以前单纯靠二次措施技术措施单作为单一技术管理手段导致事故屡次发生的现状,有力地推动了继保二次技术的发展,开创了利用新防误端子解决回路误动的新思路。同时新端子可以应用到计量、自动化等回路中,应用范围广。
In this paper, through the case of the misoperation of the sum current circuit and digging out the cause of the misoperation, it is found that all the malfunctions occur on the terminals, and the traditional terminals have no anti error prevention measures, thus the concept of a new type of anti error terminal is proposed and a new type of terminal, such as current, bus differential protection and joint jump, is developed and applied. In this paper, taking the hidden trouble of sum current circuit as an example, the uniqueness of terminal operation sequence is realized by improving the structure of test terminals used for sum current loop. The lock is realized through the inherent mechanical structure of terminals, and the misoperation accidents in the current loop are completely eliminated. The new anti misoperation terminal prevents the jumping operation, skillfully conceals the places where may be touched by mistake, and subverts the concept of the traditional terminal. It changes the situation that the accident occurred repeatedly by the secondary measures as a single technical management means, which greatly promotes the development of the relay protection secondary technology. The new idea of using the new anti malfunction terminal to solve the malfunction of the loop is created. At the same time, the new terminal can be applied to the circuits of metering, automation, etc., and has wide application scope.
In this paper, through the case of the misoperation of the sum current circuit and digging out the cause of the misoperation, it is found that all the malfunctions occur on the terminals, and the traditional terminals have no anti error prevention measures, thus the concept of a new type of anti error terminal is proposed and a new type of terminal, such as current, bus differential protection and joint jump, is developed and applied. In this paper, taking the hidden trouble of sum current circuit as an example, the uniqueness of terminal operation sequence is realized by improving the structure of test terminals used for sum current loop. The lock is realized through the inherent mechanical structure of terminals, and the misoperation accidents in the current loop are completely eliminated. The new anti misoperation terminal prevents the jumping operation, skillfully conceals the places where may be touched by mistake, and subverts the concept of the traditional terminal. It changes the situation that the accident occurred repeatedly by the secondary measures as a single technical management means, which greatly promotes the development of the relay protection secondary technology. The new idea of using the new anti malfunction terminal to solve the malfunction of the loop is created. At the same time, the new terminal can be applied to the circuits of metering, automation, etc., and has wide application scope.
引文
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[13]周建宏.一个半断路器主接线的线路及母线保护[J].西北电力技术,2005,33(4):45-47.ZHOU Jianhong.The circuit and busbar protection of the breaker-and-a-half configuration main wiring[J].Northwest China Electric Power,2005,33(4):45-47.
[14]姚斌,宋小欣.500 kV开关场中断路器跳闸未重合原因分析[J].江西电力,2007,31(6):27-28.YAO Bin,SONG Xiaoxin.Analysis of the circuit breaker in the switchyard of 500 kV substation tripped while reclosure failed[J].Jiangxi Electric Power,2007,31(6):27-28.
[15]陈雪.对几起500 kV变电站异常情况和事故的分析及处理[J].安徽电气工程职业技术学院学报,2010(3):54-56.CHEN Xue.Analysis and processing of several anomalies and accidents of 500 kV substation[J].Journal of Anhui Electrical Engineering Professional Technique College,2010(3):54-56.
[16]广东省电力调度中心.广东省电力系统继电保护反事故措施及释义[M].2007版.北京:中国电力出版社,2008.
[17]丁恒春,彭时雄,杜新纲,等.一个半断路器接线方式下并联运行电流互感器二次和电流误差分析[J].电测与仪表,2018,45(12):1-3.DING Hengchun,PENG Shixiong,DU Xingang,et al.Error analysis of resultant secondary current of two paralleled current transformers under breaker-and-a-half scheme[J].Electrical Measurement&Instrumentation,2018,45(12):1-3.
[18]郭永基.加强电力系统可靠性的研究和应用[J].电力系统自动化,2010,27(19):1-5.GUO Yongji.To focus on improving power system reliability[J].Automation of Electric Power Systems,2010,27(19):1-5.
[19]王维俭.电气主设备继电保护原理与应用[M].2版.北京:中国电力出版社,2001.
[20]国家电力调度通信中心.电力系统继电保护实用技术问答[M].北京:中国电力出版社,2001.
[21]国家电力调度通信中心.电力系统继电保护规定汇编[M].北京:中国电力出版社,2000.
[2]于晓军,刘志远.换流站交流场3/2接线中开关联锁跳闸逻辑设计与实现方法[J].电力系统保护与控制,2017,45(3):144-148.YU Xiaojun,LIU Zhiyuan.Design and realization method for interlock tripping logic of converter station AC circuit breaker in middle with 3/2 connection[J].Power System Protection and Control,2017,45(3):144-148.
[3]张旭升,李江林,赵国喜.智能变电站二次安措防误系统研究与应用[J].电力系统保护与控制,2017,45(11):141-146.ZHANG Xusheng,LI Jianglin,ZHAO Guoxi.Research and application of the anti-misoperation system for the intelligent station secondary equipment security measures[J].Power System Protection and Control,2017,45(11):141-146.
[4]HAIDER S,LI Guojie,WANG Keyou.A dual control strategy for power sharing improvement in islanded mode of AC microgrid[J].Protection and Control of Modern Power Systems,2018,3(3):111-118.DOI:10.1186/s41601-018-0084-2.
[5]赵晓明.500 kV线路距离保护零序补偿系数分析及在校验中的应用[J].浙江电力,2005(5):19-22.ZHAO Xiaoming.Analysis of earth fault compensation factor in digital distance relay and its application for testing[J].Zhejiang Electric Power,2005(5):19-22.
[6]盛方正,傅晓飞,周清雅.差动保护电流互感器“和电流”接法的问题研究[J].供用电,2011,28(6):56-58.SHENG Fangzheng,FU Xiaofei,ZHOU Qingya.Research of the problem of accessing the secondary side of current transformer[J].Distribution&Utilization,2011,28(6):56-58.
[7]徐晓春,刘革明,戴光武,等.3/2开关接线方式下基于能量制动的抗电流互感器饱和措施[J].电力系统自动化,2016,40(12):189-194.XU Xiaochun,LIU Geming,DAI Guangwu,et al.Energy resistance based anti-saturation scheme with breaker-anda-half configuration[J].Automation of Electric Power Systems,2016,40(12):189-194.
[8]刘星,郭维雅,胡叶宾,等.3/2接线方式同杆双回线路准三相运行相关保护的实现[J].电力系统保护与控制,2009,33(11):32-35.LIU Xing,GUO Weiya,HU Yebin,et al.Realization of the interrelated protection on quasi-three-phase running of double circuit lines on the same tower for the 3/2circuit breaker connection[J].Power System Protection and Control,2009,33(11):32-35.
[9]刘革明,曲广强,徐晓春,等.3/2接线方式自适应线路保护策略设计方案[J].电力系统自动化,2012,36(22):104-107.LIU Geming,QU Guangqiang,XU Xiaochun,et al.Design of adaptive line protection strategy with 3/2 connection[J].Automation of Electric Power Systems,2012,36(22):104-107.
[10]董泰福,宗秀红.500 kV鹏城变电站技改中CT回路危险点分析及防范[J].电力系统保护与控制,2009,37(23):159-161.DONG Taifu,ZONG Xiuhong.The control in advance and danger analysis existed in CT circuit in technological transformation of the 500 kV Pengcheng transformer substation[J].Power System Protection and Control,2009,37(23):159-161.
[11]刘兵,李勇,奚江惠,等.3/2接线变电站拉停断路器短路电流限制措施分析[J].电力系统自动化,2014,38(12):131-135.LIU Bing,LI Yong,XI Jianghui,et al.Analysis of pulling switch to limit short-circuit current in 3/2 wiring substation[J].Automation of Electric Power Systems,2014,38(12):131-135.
[12]李旭,雷振锋,樊占峰,等.500 kV变电站3/2接线T区短引线保护方案探讨[J].电力系统保护与控制,2009,37(18):102-104.LI Xu,LEI Zhenfeng,FAN Zhanfeng,et al.Discussion on 3/2 connection T wiring short-lead zone protection scheme in 500 kV substation[J].Power System Protection and Control,2009,37(18):102-104.
[13]周建宏.一个半断路器主接线的线路及母线保护[J].西北电力技术,2005,33(4):45-47.ZHOU Jianhong.The circuit and busbar protection of the breaker-and-a-half configuration main wiring[J].Northwest China Electric Power,2005,33(4):45-47.
[14]姚斌,宋小欣.500 kV开关场中断路器跳闸未重合原因分析[J].江西电力,2007,31(6):27-28.YAO Bin,SONG Xiaoxin.Analysis of the circuit breaker in the switchyard of 500 kV substation tripped while reclosure failed[J].Jiangxi Electric Power,2007,31(6):27-28.
[15]陈雪.对几起500 kV变电站异常情况和事故的分析及处理[J].安徽电气工程职业技术学院学报,2010(3):54-56.CHEN Xue.Analysis and processing of several anomalies and accidents of 500 kV substation[J].Journal of Anhui Electrical Engineering Professional Technique College,2010(3):54-56.
[16]广东省电力调度中心.广东省电力系统继电保护反事故措施及释义[M].2007版.北京:中国电力出版社,2008.
[17]丁恒春,彭时雄,杜新纲,等.一个半断路器接线方式下并联运行电流互感器二次和电流误差分析[J].电测与仪表,2018,45(12):1-3.DING Hengchun,PENG Shixiong,DU Xingang,et al.Error analysis of resultant secondary current of two paralleled current transformers under breaker-and-a-half scheme[J].Electrical Measurement&Instrumentation,2018,45(12):1-3.
[18]郭永基.加强电力系统可靠性的研究和应用[J].电力系统自动化,2010,27(19):1-5.GUO Yongji.To focus on improving power system reliability[J].Automation of Electric Power Systems,2010,27(19):1-5.
[19]王维俭.电气主设备继电保护原理与应用[M].2版.北京:中国电力出版社,2001.
[20]国家电力调度通信中心.电力系统继电保护实用技术问答[M].北京:中国电力出版社,2001.
[21]国家电力调度通信中心.电力系统继电保护规定汇编[M].北京:中国电力出版社,2000.