中文摘要：

性能评价对于提高热工控制系统控制品质，优化机组性能具有重要意义。以单一类型扰动存在情况下的性能评价方法为基础，提出了一种热工控制系统综合性能的评价方法，该方法针对设定值扰动和随机性扰动同时存在的情况，通过一系列数据处理将误差分解，得到随机性误差分量和确定性误差分量，进而计算出系统的确定性和随机性性能指标。文中给出了该方法的一般步骤，并通过仿真及对某1000Mw火电机组主汽压控制系统的实际运行数据进行评价验证了该方法的有效性。

英文摘要：

The performance assessment is important for the improving of thermal control system in power plant. A new assessment method for comprehensive performance of thermal control system was presented for the case of set-point change and stochastic disturbance existing simultaneously. In this method, the error data of control system were divided as the deterministic component and the stochastic component, and then the two components were used to calculate the tracking index and the stochastic index separately. Implementation steps of this method were also indicated. A numerical simulation and an actual data analysis for main pressure control system of a 1 000 MW power unit were tested. The results show the effectiveness of this method.