多断面多通道互联电网广域失步解列控制系统设计及实施

Design and Implementation of Wide Area Out-of-Step Splitting Control System for Multi-Section and Multi-Channel Interconnection Power Grids

总结分析了多断面多通道区域互联电网失步振荡时可能存在的多断面失步存在选择性、同一断面不同通道失步不同时以及同一断面上部分通道失步特性不明显等特性,针对现有就地失步解列方案不适应上述特性的问题,采用基于就地装置动作允许命令,利用远方通信构建的广域失步解列系统方法,根据考虑解决现有就地失步解列方案问题、与现有就地失步解列功能的配合、系统防误设计以及异常情况下控制策略处理逻辑等主要设计原则,设计并实施了南方电网广域失步解列控制系统。RTDS仿真试验结果表明,该系统能够正确响应,有选择、快速、可靠地采取既定措施同时解列相关断面,有效解决现有就地失步解列方案的局限性,满足实际系统运行需要。

The possible characteristics of out-of-step oscillation of multi-section and multi-channel interconnection power grid are summarized and analyzed,such as the selectivity of multi-section out-of-step,the different out-of-step time of different channels on the same section and the lack of obvious out-of-step characteristics of some channels on the same section.In response to the problem that the existing local out-of-step splitting schemes can′t adapt to the above characteristics,a wide area out-of-step splitting control system method based on the action permission command of local splitting device and constructed through remote communication is adopted.A wide area out-of-step splitting control system of China Southern Power Grid is designed and established with the main principles of considering solving the problem of the existing local out-of-step splitting scheme,the coordination with the existing local out-of-step splitting function,system error prevention design and the control strategy processing logic under abnormal circumstances.The real-time digital simulator(RTDS) simulation test results show that the system can respond correctly,selectively,quickly,and reliably take established measures to split the related sections at the same time,effectively solving the limitation of the existing local out-of-step splitting scheme and meeting the operational needs of actual power system.