凝结水变负荷深度调峰技术实现方法及其经济性评价
第47卷 第5期 热 力 发 电 V ol.47 No.5
收稿日期：2017-12-28
第一作者简介：刘畅(1978—)，男，硕士，工程师，主要研究方向为火力发电厂自动控制，liuchang@https://www.360docs.net/doc/ad19092842.html, 。
凝结水变负荷深度调峰技术
实现方法及其经济性评价
刘 畅，耿林霄，高 林，王 倩
（西安热工研究院有限公司，陕西 西安 710054）
［摘 要］目前，国内火电机组参与深度调峰需要满足机组负荷响应速率及中低负荷段运行经济性的
要求，虽然主蒸汽滑压运行能在一定程度上提高机组的运行经济性，但单一静态滑压运行
曲线没有考虑环境参数变化、供热及工业用汽等影响。本文提出一种凝结水变负荷深度调
峰技术的实现方法，通过凝结水节流快速变负荷控制技术及基于凝结水变负荷的深度滑压
优化控制系统，根据电网自动发电控制（AGC ）和一次调频指令需求，综合调配机组主蒸
汽调节阀和凝结水泵变频器，同时根据环境和供热等工况变化，实时优化给定主蒸汽压力，
实现深度调峰滑压节能优化运行，并通过对比试验评价该技术的经济性。结果表明，该技
术能显著提高机组的综合经济效益，满足机组电网考核与运行经济性的需求。
［关 键 词］深度调峰；一次调频；凝结水节流；滑压优化；经济性评价；除氧器水位；AGC 响应 ［中图分类号］TK323 ［文献标识码］B ［DOI 编号］10.19666/j.rlfd.201712152
［引用本文格式］刘畅, 耿林霄, 高林, 等. 凝结水变负荷深度调峰技术实现方法及其经济性评价[J]. 热力发电, 2018, 47(5): 57-62. LIU Chang, GENG Linxiao, GAO Lin, et al. Realization method and economic evaluation of variable load deep peak regulation technology based on condensate water throttling[J]. Thermal Power Generation, 2018, 47(5): 57-62.
Realization method and economic evaluation of variable load deep peak
regulation technology based on condensate water throttling
LIU Chang, GENG Linxiao, GAO Lin, WANG Qian
（Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China）
Abstract: At present, domestic thermal power units participating in deep peak load regulation need to meet the unit load response rate and the economical requirements of the low and medium loads. Although the main steam sliding pressure operation can improve the unit economy in a certain extent, the traditional single static sliding pressure curve does not consider the influence of the changing environmental parameters, heating, industrial steam and so on. This study proposes a realization method of variable load deep peak regulation technology based on condensate water. By rapidly variable load control technology of condensate water throttling and variable load deep sliding pressure optimization control system based on condensate water, according to AGC and the instruction demands of primary frequency modulation, the main steam control valve of unit and the frequency converter of condensate pump are deployed comprehensively. At the same time, according to the changes of working conditions such as environment and heating, the given main steam pressure is optimized in real-time, and the energy-saving operation of deep peak load regulation and sliding pressure are achieved. Then the economy of this technology is evaluated through comparative tests. The results show that this technology can significantly improve the overall economic efficiency of unit and meet the needs of the power grid assessment and economic operation of unit.
Key words: deep peak load regulation, primary frequency modulation, condensate water throttling, sliding pressure optimization, economic assessment, deaerator level, AGC response
近年来，随着火电机组参与深度调峰，机组负
荷率持续降低，全负荷段机组平均供电煤耗逐步升
高[1]。为提高机组经济性及其中低负荷段负荷响应能力，研究火电机组中低负荷段的运行策略具有重要意义。 目前，国内火电机组为满足电网自动发电控制万方数据