基于需求侧可靠性差别定价的电力市场交易新机制

A New Mechanism for Reliability Transaction of Power Market Based on Reliability Price Discrimination of Demand Side

不同电网用户对电网(用)电安全可靠性的要求存在很大差异,文中综合考虑发输电系统可靠性、负荷不确定性和负荷节点综合供电可靠性的关系,依据“按质论价、高质高价”的原则,提出了一种满足用户个性化要求且基于需求侧可靠性差别定价的电力市场可靠性交易新机制电力用户根据自身的用电负荷特征及电网公司公布的可靠性电价申报供电可靠性要求,电网公司在综合考虑低可靠性要求用户削负荷能力的情况下确定系统中最佳的备用容量水平,这种模式不仅更容易被电力用户接受,而且因其无需确定用户切负荷的损失费用,实现起来更为简单。

Reserve capacity is useful to all nodes of the grid. But different users at different nodes have different demands for power reliability. The integrated power consumption reliability model of the node is built, which takes two factors into consideration, i.e. reliability of generation and transmission system and uncertainty of load forecasting. Based On the principle that the power with high reliability has high reliability price, the influence of different reliability demand information from different users on the grid＇s optimal reserve capacity is analyzed and a way to calculate different users＇ reliability price is given. According to their own power consumption features and the reliability pricing published by power grid, the power consumers declare the demands of power supply reliability. And then the power grid company determines the reserve capacity according to the power consumers＇ demand. The new mechanism proposed can satisfy the individualized reliability demands for reliability and is apt to be received by the power users and easy to be carried out.