摘要
为了解决电力系统连锁故障预警方法预警误差过大和响应时间过长的问题,采用数字孪生技术研究了一种电力系统连锁故障早期预警方法。在电网正常运行的情况下加大线路潮流容量极限,引导故障线路导线沿着电力系统的电力传输线路输送故障数据信息,并削减电力系统的不稳定负荷,及时传导故障信息;结合电力系统临界平衡点状态信息与系统扩容结构数据,促使电力系统进入自动组织平衡状态中,同时进行系统故障循环监测操作,实现故障预警。仿真试验结果表明,基于数字孪生技术的电力系统连锁故障早期预警方法能够利用设备数字孪生体对系统的运行状态差异和故障进行准确预测,预测响应时间缩短了20%~50%,具有很好的发展前景。
In order to solve the problems of large early warning error and long response time of the power system cascading fault early warning method,a cascading fault early warning method in power system was studied by using digital twin technology.Under the normal operation of the power grid,increase the limit of line power flow capacity,guide the fault line conductor to transmit fault data information along the power transmission line of the power system,reduce the unstable load of the power system,and transmit fault information in time;combined with the state information of the critical equilibrium point of the power system and the data of the system expansion structure,the power system was promoted to enter the automatic organization equilibrium state.At the same time,the system fault cycle monitoring operation was carried out to realize the fault early warning.The simulation results show that the early warning method of cascading faults in power system based on digital twin technology can accurately predict the operating state differences and faults of the system by using the digital twins of the equipment,and the prediction response time is shortened by 20%~50%,which has a good development prospect.
作者
任佳依
王菲
范子恺
王球
张楠
王俊
Ren Jiayi;Wang Fei;Fan Zikai;Wang Qiu;Zhang Nan;Wang Jun(Economic Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing Jiangsu 210000,China)
出处
《电气自动化》
2023年第3期82-84,共3页
Electrical Automation
关键词
数字孪生技术
电力系统
连锁故障
故障预警
预警仿真
digital twin technology
power system
cascading failure
fault early warning
early warning simulation
