主动配电网三相电压优化及校正控制方法

摘要

The three-phase voltage optimization and correction technology of active distribution network is studied and a control strategy of centralized network-wide optimization and localized coordinative correction is proposed,which,based on the semi-definite programming theory,establishes a three-phase voltage optimization model considering the inter-phase induction of a branch to coordinate the active and reactive power resources for the optimized control of whole active distribution network in long time-scale,while,based on the three-phase sensitivity of voltage phasor to nodal injection power,establishes a quadratic programming model for the control of voltage phasor correction in short time-scale.Simulation for the three-phase IEEE 33-bus standard test system shows that,the network-wide optimization control can effectively reduce the network loss while the local correction control can apply the least power adjustment to quickly correct the voltage amplitude of limit-violated node and reduce the three-phase imbalance.%研究主动配电网三相电压的优化与校正控制技术,提出了全网集中优化、局部协调校正的控制方法.在长时间尺度内,协调全网有功和无功资源,基于半定规划理论建立计及本支路相间互感的主动配电网三相电压优化的数学模型,实现全网优化控制.在短时间尺度内,利用电压相量对节点注入功率的三相灵敏度建立电压相量校正二次规划模型,实现电压相量校正控制.IEEE 33节点三相标准测试系统的仿真表明,全网优化控制能有效降低网损,局部校正控制能利用最小的功率调整量快速校正越限节点的电压幅值,并减少三相不平衡度.