摘要
电力系统的有功和无功安全校正是运行和控制的一项重要内容,特别是在大规模可再生能源接入的情况下。文章首先将(回路)支路电流变量引入到电力网中,建立电力网络分析的拓展方程。其次根据支路电流、节点电压和平衡节点有功功率针对发电机节点注入的有功和无功功率灵敏度,以平衡节点有功功率变化表示网损的变化,以发电成本和网损综合最小为目标函数,考虑节点电压约束、支路潮流约束和发电机视在功率限制约束,建立电力系统线性化的有功和无功综合安全校正的数学模型,从而对电力系统的有功和无功安全校正问题进行综合考虑。最后以IEEE-30节点系统进行实例验证分析,证明该方法是有效的。
The active and reactive power security correction are one of the important tasks in power systems, especially in the case of large-scale renewable energy integration into power system. The extended functions are established by introducing the loop （line） current variables into electric power network. It is performed that lined mathematic model of active and reactive power security correction problem by taking integrated generation cost and net losses as objective function and considering the bus voltage, line flow, power of generators constraints based on sensitivity of bus voltage, line current, active power of slack buses to injected active and reactive power of generator buses, thereby the active and reactive power security correction problem is integrated. It is shown that the method is very effective through the calculation by the IEEE-30 bus system.
出处
《供用电》
2016年第10期86-90,共5页
Distribution & Utilization
关键词
节点电压
支路电流
有功安全校正
无功安全校正
灵敏度
bus voltage
line current
active power security correction
reactive power security correction
sensitivity
