水电站辅机管网时变系统计算研究

Study on the calculation of time-varying system of pipe network of hydropower station

水电站油气水系统在运行中由于操作和事故的产生 ,其组成的管网随时间会产生“死点”和“死网”问题 ,该问题的产生使系统持续求解成为难题。采用“给定水头激活法”将“死点”和“死网”激活 ,具体做法是将“死点”及“死网”中经高斯消去后对角线元素为 0的点作为管网的规定水头边界 ,从而使在线求解可以持续。针对设备操作和事故产生而引起的管网结构变化所带来的计算困难 ,在VCS3平台上对水电站辅机系统进行仿真计算 ,取得了满意的计算结果 。

Due to the mal-operation and failure in the o peration of the auxiliary system of hydropower station, its pipe network will occur isolating node and isolating sub-network,which will make the calculation difficult. This paper proposes one method of 'given head activating method' that can activate isolating node and isolating sub-network. This method is to make the isolating node and some nodes of the isolating sub-network under the given head limit to be solved. In allusion to the calculation difficulty of the changed structure because of the mal-operation and failure in the operation of the auxiliary system of hydropower station, the simulation calculation of hydropower station's auxiliary system on VCS3, it got satisfied results, and realized the interplay of graphical interfaces and calculation model.