摘要
对某1000MW机组进行了压力控制逻辑的设计优化,并通过辅机故障减负荷试验验证了优化效果。结果表明:优化后机组主蒸汽温度降低幅度在优良范围内,汽轮机的高压调节阀开度不会频繁波动,在发生各种辅机故障时,机组能够迅速稳定在目标负荷且各项参数保持平稳。
To realize the run back(RB) control for a 1000MW unit, an optimized design was conducted on the pressure control logic, and the optimization effectiveness was verified by RB tests. Results show that after optimization, the decreasing amplitude of main steam temperature lies in a reasonable range, and the opening of high-pressure control valve does not change frequently; the target load of unit would be recovered swiftly when malfunctions of auxiliary parts occur, while various parameters keep unchanged.
引文
[1] 朱北恒. RB控制技术试验研究[J]. 中国电力,2004,37(6):60-67.
[2] 吴永存,朱介南. 宁海电厂1 000 MW机组RB与FCB控制策略的设计和应用[J]. 电力建设,2011,32(1):59-63.
[3] 朱北恒. 火电厂热工自动化系统试验[M]. 北京:中国电力出版社,2006.
[4] 尹峰. 火电机组全工况自动RB控制策略的研究与应用[J]. 浙江电力,2008,27(4):7-10.
[5] 康立杰,陈伟,梁伟平,等. 辅机故障减负荷局部控制逻辑设计与仿真[J]. 华电技术,2015,37(1): 16-18.
[6] 赵志丹,陈志刚,郝德锋,等. 火电机组RB控制策略及其试验中应注意的问题[J]. 热力发电,2010,39(6): 48-50.
[7] 刘敏. 不同的机组特性对RB试验的影响[J]. 热力发电,2010,39(6):44-50.
[8] 毕艳洲,郝涛,施书建,等. 1 000 MW机组辅机故障减负荷控制策略的优化与应用[J]. 电力建设,2013,34(5):30-34.
[9] 朱北恒,尹峰,何畅,等. 火电机组RB试验等效性研究[J]. 浙江电力,2008,27(2):9-12.