Design and Implementation of Substation Equipment Dynamic Capacity-Increase System

doi:10.3969/j.issn.1000-7229.2015.05.011

Abstract

Abstract:

As for new bottleneck to limit the transmission capacity of power grid caused by equipments capacity in substation, the dynamic capacity-increase technology of substation equipments were studied, and the dynamic capacity-increase system was designed for substation equipments. Through collecting condition monitoring parameters such as the temperature and current of transformer, this paper calculated the load capacity of transformer according to the ‘Guide for Oil Immersed Power Transformer Load’ （GB/T 1094.7） and the thermal equivalent circuit model of transformer. Then, the load capacities of circuit breaker, transformer and isolating switch in substation circuit after overload were checked by using current shunt algorithm. Combined with the operation mode of power grid and the risk assessment value, the running state and capacity-increase ability of substation equipment were analyzed and estimated. The pilot application shows that the calculation results of the system can provide a scientific basis for the operation of scheduling personnel.

Key words: dynamic capacity-increase, overload, hot-spot temperature, thermal circuit model, condition monitoring

CLC Number:

TM 63

WU Qiuli, DENG Yurong, ZHANG Wei, LIANG Junbin, LYU Zecheng. Design and Implementation of Substation Equipment Dynamic Capacity-Increase System[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(5): 66-71.

References

［1］凌平,金珩,钱之银.提高输电线路输送容量动态监测增容技术的研究［J］.中国电力,2007,40（1）:44-47.
Ling Ping, Jin Heng, Qian Zhi-yin. Research on improving the transmitting capacity of transmission line based on dynamic monitoring［J］.Electric Power,2007,40（1）:44-47.
［2］彭向阳,周华敏,郑晓光,等.架空送电线路特殊增容运行研究［J］.中国电力,2010,43（1）：40-42.
Peng Xian-gyang, Zhou Hua-min, Zheng Xiao-guang,et al.Study on raising transmission capability of overhead transmission line in special operation condition［J］.Electric Power,2010,43（1）：40-42.
［3］吕泽承，邓雨荣，张炜，等.基于IEC 61850标准的在线监测综合处理单元与主站平台通信技术［J］南方电网技术，2013,7（6）:36-40.
Lü Zecheng, Deng Yurong, Zhang Wei,et al. The technology on communication between integrated processing unit of online monitoring system and master station platform online monitoring system based on IEC 61850 ［J］. Southern Power System Technology, 2013,7（6）:36-40.
［4］凌平,黄华.变电设备动态增容方案设计研究［J］.华东电力，2011，39（11）:1799-1802.
Ling Ping，Huang Hua. Research on variable dynamic capacity plan design of electric equipments［J］. East China Electric Power，2011,39（11）:1799-1802.
［5］张燕.浅谈变压器增容改造及应用［J］.科技资讯，2007（3）:50-50.
［6］朱卓城.基于变配电房增容改造的变压器选配及经济运行［J］.电力需求侧管理，2010，13（1）:57-58.
Zhu Zhuocheng. Transformer selection and economic operation based on transformation and distribution room uprating reconstruction［J］. Power Demand Side Management, 2010,13（1）:57-58.
［7］李运德.变电所增容对主变压器的选择［J］.农村电工,2005，13（2）:28-28.
［8］刘永波，向小民，范开明.计及经济效益的系统主变压器节能增容改造分析研究［J］. 陕西电力，2012，40（9）：51-53.
Liu Yongbo, Xiang Xiaoming, Fan Kaiming. Analysis and research on energy saving and capacity increase reform of system main transformer considering economic benefits［J］. Shaanxi Electric Power, 2012,40（9）:51-53
［9］江淘莎，李剑，陈伟根，等.油浸式变压器绕组热点温度计算的热路模型［J］.高电压技术，2009，35（7）:1635-1640.
Jiang Taosha, Li Jian, Chen Weigen, et al. Thermal model for hot spot temperature calculation in oil-immersed transformers［J］. High Voltage Engineering, 2009, 35（7）:1365-1640.
［10］范闻博，韩筛根.有载调容变压器安全经济运行控制策略［J］.电力系统自动化，2011, 35（18）:98-107.
Fan Wenbo, Han Shaigen. A control strategy for secure and economic operation of on-load capacity regulating transformer［J］. Automation of Electric Power System, 2011, 35（18）:98-107.
［11］谢幸生.变压器增容加固改造概论［J］.高电压技术，2004，30（136）:120-123.
Xie Xingsheng. Summerization on power transformer’s reconstruction involving increasing capacity and being reinforced［J］. High Voltage Engineering, 30（136）:120-123.

[1]	MO Ruohui1, ZUO Junjun2, LONG Yufang2, LAN Fei2, HU Jianchen1, LI Xian1, WU Feng1, QI Yongfu1, WU Yunliang1. Risk Assessment Model and Method of Power System in Storm Climate [J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(2): 21-26.
[2]	ZHOU Jin, FANG Ning, GUO Peng . Tower Vibration Fault Diagnosis and Monitoring for Wind Turbines Based on RPCA [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(8): 125-129.
[3]	YANG Zhen, ZHAO Yanru. Application of EPON Technology in Smart Substation Condition Monitoring and Video Surveillance Systems [J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(11): 107-111.
[4]	GUI Feifei, WANG Zhengang, PANG Baisheng, ZHANG Ende, HUA Qi, GAO Huijuan, WANG Yan. Calculation Method of Maximum Sag for Overhead Transmission Line Based on LabVIEW [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(7): 108-113.
[5]	LIANG Junbin, ZAHNG Wei, DENG Yurong, GUO Lijuan, LV Zecheng. Parallel Processing Technology of Monitoring Field Data in Intelligent Substation [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(2): 35-40.
[6]	LI Jun，ZHAO Yijie，WU Jun，LIU Dichen，DONG Feifei，PAN Xudong. Index Model of Static Security Risk Assessment Based on Line Outage [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(1): 21-24.
[7]	. Improvement of Grid Reliability of Sichuan Province by Using UHVDC Transmission System [J]. ELECTRIC POWER CONSTRUCTION, 2012, 33(4): 24-27.