中国电力 ›› 2016, Vol. 49 ›› Issue (12): 96-100.DOI: 10.11930/j.issn.1004-9649.2016.12.096.05

• 发电 • 上一篇    下一篇

火电厂厂级负荷优化控制系统研制及应用

牛洪海,李兵,陈俊   

  1. 南京南瑞继保电气有限公司,江苏 南京 211102
  • 收稿日期:2016-04-21 修回日期:2016-12-29 出版日期:2016-12-20 发布日期:2016-12-29
  • 作者简介:牛洪海(1980—),男,辽宁鞍山人,硕士,高级工程师,从事继电保护、控制及自动化装置的研究。E-mail: niuhh@nrec.com

R&D and Application of Plant-Wide Load Control System for Thermal Power Plants

NIU Honghai, LI Bing, CHEN Jun   

  1. Nanjing NARI-Relays Electric Co., Ltd., Nanjing 211102, China
  • Received:2016-04-21 Revised:2016-12-29 Online:2016-12-20 Published:2016-12-29

摘要: 针对目前电网单机发电控制模式无法兼顾电厂机组安全经济运行的现状,分析了厂级负荷控制系统的发展与应用现状,对其系统架构、负荷优化控制模型等关键技术进行了研究。首先提出了一种基于嵌入式装置、双机冗余的厂级负荷控制系统架构,在满足电网控制实时性要求的同时实现了电厂信息的高度集成,进而在常规以全厂煤耗量最小为目标的负荷经济分配模型基础上,综合考虑电网调频需要,建立了AGC模式下的火电机组负荷在线优化控制模型。仿真结果表明,可降低全厂发电标煤耗约0.3 g/(kW·h)。最后对厂级负荷优化控制系统的主要功能进行了阐述,可为厂级负荷优化控制系统的改造与实施提供借鉴。

关键词: 火电机组, 自动发电控制, 厂级负荷控制, 系统架构, 控制策略, 节能

Abstract: To solve the problem that the current AGC mode cannot guarantee the economic and safe operation of the power plant simultaneously, the current development and the applications of the plant-wide load control system are analyzed, and the study on the key technologies such as the system architecture and the plant-wide optimal load distribution model is conducted in this paper. First, one dual redundant plant-wide load control system based on the embedded device is proposed, which can not only meet the security and real-time requirements of the power grid, but also realize high information integration of the plant. Then, based on the traditional plant-wide load distribution model that fulfills the minimum coal consumption rate, a new online multi-objective load optimal distribution model is established with the consideration of the frequency regulation requirements. The simulation results show that with the model, the average gross coal consumption rate can be reduced by about 0.3 g/(kW·h). At the end, the main functions of the plant-wide load control system are introduced, which could provide reference for the implementation and reconstruction of the system.

Key words: thermal power plant, automatic generation control, plant-wide load control, system architecture, control strategy, energy conservation

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