CAJ | 학술논문

为克服区域间无功耦合对二级电压控制产生的影响，以国内自动电压控制主站集中控制模式为前提，提出一种计及区域间无功耦合的协调二级电压控制方法。该方法在原有协调二级电压控制二次规划模型的目标函数和约束条件中分别引入区域外受控发电机无功调节量，建立多分区关联协调二级电压控制模型。借助非合作博弈的思想，将这个问题描述为古诺模型，并采用内点法求解多分区关联协调二级电压控制的古诺模型获得纳什均衡解。这个问题的纳什均衡解既保留了各个区域独立控制又实现了各控制区域之间的协调。在新英格兰39节点系统和某省级1004个节点电网上的稳态仿真结果表明，所提方法克服了中枢母线电压在调控过程中的振荡，证明其能有效解决全网各区域二级电压控制之间的协调问题。
위극복구역간무공우합대이급전압공제산생적영향，이국내자동전압공제주참집중공제모식위전제，제출일충계급구역간무공우합적협조이급전압공제방법。해방법재원유협조이급전압공제이차규화모형적목표함수화약속조건중분별인입구역외수공발전궤무공조절량，건립다분구관련협조이급전압공제모형。차조비합작박혁적사상，장저개문제묘술위고낙모형，병채용내점법구해다분구관련협조이급전압공제적고낙모형획득납십균형해。저개문제적납십균형해기보류료각개구역독립공제우실현료각공제구역지간적협조。재신영격란39절점계통화모성급1004개절점전망상적은태방진결과표명，소제방법극복료중추모선전압재조공과정중적진탕，증명기능유효해결전망각구역이급전압공제지간적협조문제。
To eliminate the reactive power coupling among controlled zones in coordinated secondary voltage control (CSVC), a novel CSVC method considering reactive power coupling based on the centralized control structure of AVC system in China was proposed. Reactive regulations of controlled generators outside were introduced into objective and constraints of the original quadratic model to establish a new CSVC model considering reactive power coupling among multiple correlated zones. According to non-cooperative game theory, the problem of CSVC considering reactive power coupling among multiple correlated zones could be described as Cournot model. And Nash equilibrium, the solution of Cournot model, could be found by an algorithm to solve all quadratic programming models simultaneously based on interior-point algorithm. The Nash equilibrium means the best control strategy in CSVC which can keep each controlled zone running independent and solve the coordination problem among zones well. Computational results on IEEE 39-bus and a real provincial power system illustrate that control oscillation caused by the reactive power coupling among zones is effectively attenuated, which proves that this new method can solve coordination problems among controlled zones satisfactorily.