电网暂态稳定控制策略防误判据及实证

目前送端电网有大量电磁环网，普遍存在暂态稳定问题和稳定控制系统拒动误动风险，对稳定控制策略的主判据与防误判据适应性要求随之增高。根据典型电网结构及其稳定分析结论，结合控制代价、控制风险等因素，提出三种典型暂态稳定控制策略防误判据。第一类暂稳策略防误判据为：无须接入保护信号或者开关位置信号，以纯功率转移量为防误判据；第二类暂稳策略防误判据为：接入开关位置信号，以合闸位置继电器变位为防误判据，且结合拒动、误动风险评估确定采用单相或两相或三相合闸位置继电器信号；第三类暂稳策略防误判据为：接入开关位置信号和保护信号，以保护信息与开关变位信息为防误判据。某省级实际电网中三种典型的案例证明，所提的防误判据具有较强的适应性和可靠性。

Anti-maloperation Criterion for Transient Stability Control Strategy of Power Grid and Application

As there are plenty of electromagnetic loops in sending part of the power system, the transient stability problem and the risk of equipment resist-operation or maloperation give much higher requirement to the adaptability of main criterion and anti-maloperation criterion of system-stability control strategies. Based on the typical structure and stability analysis conclusions of power grids, considering the control cost, control risk and other factors, this paper proposes three kinds of anti-maloperation criterion for transient stability strategy. For the first kind, the quantity of transmitting pure power is taken as the anti-maloperation criterion, and both the protection signal and the switch position signal are neglected. For the second kind, depending on the risk assessment of equipment resist-operation or maloperation, the closing-position-relay signal from single phase, two phases, or three phases as well as the position signal of access switch are taken as the anti-maloperation criterion.For the third kind, the protection information and closing-position-relay information are taken as the anti-maloperation criterion, considering the position signal and protection signal of access switch. The adaptability and reliability of these strategies have been proved on the typical cases of practical networks in a province.