说明：  给定的运行条件有系统中各电源和负荷点的功率、枢纽点电压、平衡点的电压和相位角。待求的运行状态参量包括电网各母线节点的电压幅值和相角，以及各支路的功率分布、网络的功率损耗等
(The set operating conditions included the power of each power source and load point, the pressure of the junction point, the pressure of the balance point and the phase angle.The operation conditions to be obtained included the pressure range and angle of each bus node, the power distribution of each branch, the power loss of the network, and so on)