用于电网稳定性计算的再热凝汽式汽轮机数学模型  

A Mathematical Model of Rehear Turbine for Power Grid Stability Calculation

作　　者：田云峰[1] 郭嘉阳[1] 刘永奇[2] 李丹[2] 雷为民[2] 王蓓[2] 李胜[2] 张雪轩[2] 

机构地区：[1]华北电力科学研究院有限责任公司,北京市西城区100045 [2]华北电力调度通信中心,北京市宣武区100051

出　　处：《电网技术》2007年第5期39-44,共6页Power System Technology

摘　　要：通过对再热凝汽式汽轮机热力过程的原理分析，结合现场试验的验证，改进了传统的电力系统稳定计算的汽轮机模型，创新性地提出了高压缸功率自然过调系数的概念。改进后的模型，相对于目前动力控制领域一直在用的汽轮机功率模型，在0．1-1Hz的工作频段，其功率响应幅值提高60％左右，和实际对象非常接近。By means of analyzing the thermodynamic process within reheating turbine and combining with the on-site test results, traditional steam turbine model for power grid stability calculation is improved, and a brand new concept of natural power overshooting coefficient of high-pressure cylinder is proposed. In respect to the power model of steam turbine that is continuously used in the field of power control, the power response amplitude of the improved model is raised by 60% within the working frequency band from 0.1Hz to 1.0Hz, which is very close to actual conditions.

关 键 词：电力系统 动态稳定性 再热式汽轮机 数学模型 高压缸功率 自然过调系数 

分 类 号：TM711[电气工程—电力系统及自动化]