基于稳态数据的调度主站热稳定控制技术

Thermal Stability Control Technology in Dispatching Center Based on Grid Steady-state Data

因网架结构和负荷增大等原因,电网运行热稳定问题日益突出。文中从稳态量测数据实用化角度出发,针对短期性和临时性的电网热稳定过载问题,在调度主站能量管理系统中开发热稳定控制子系统,通过分钟级别响应的远程自动控制,切除远方负荷或机组,从而可提高热稳定运行限额和电网供电能力。介绍了主站热稳定控制的原理和实现方法,并且阐述了控制策略管理、三相跳闸事故判定、过载识别及消除和控制可靠性等关键技术。实际运行效果验证了该技术的有效性。

Owing to the grid structure and load increase,grid thermal stability has become increasingly conspicuous.From the practical perspective of steady-state data,the thermal stability control subsystem is developed in energy management system for short-term and temporary grid thermal stability overload.By means of the automatic remote control,thermal stability control can be executed in a minute by cutting off remote load and generator unit thereby improving the ability of power supply by relaxing the thermal limit.The principle and implementing method of thermal stability control of the master station are dealt with.And some key techniques are presented,including control strategy management,three-phase tripping accident determination,overload recognition and elimination.Actual application validates the effectiveness of this technology.