Operational flexibility and operation optimization of CHP units supplying electricity and two-pressure steam

被引：20
|
作者：
Liu, Miaomiao [1 ]
Liu, Ming [1 ]
Chen, Weixiong [1 ]
Yan, Junjie [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
来源：
ENERGY | 2023年 / 263卷
基金：
中国国家自然科学基金;
关键词：
CHP; Constraint; Double-extraction heating unit; Feasible operation domain; Energy and exergy efficiencies; COMBINED HEAT; ECONOMIC-DISPATCH; POWER-SYSTEM; ENERGY; PERFORMANCE; INTEGRATION; ALGORITHM; BOILERS; STORAGE; MODEL;
D O I：
10.1016/j.energy.2022.125988
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Combined heat and power (CHP) is an effective way of enhancing the energy efficiency of thermal power plants. Double-extraction CHP, a typical kind of CHP unit, can supply two-pressure steam to district heating and industry users. The feasible operation domain of a double-extraction CHP unit, which has many constraints, is essential for the flexible operation enhancement and operation optimization of CHP units. In this study, a method is proposed to express the feasible operation domain of the double-extraction CHP unit with a 3D operation domain with six boundary surfaces, and the operating boundary constraints of the double-extraction unit are elaborated. Then, a reference 1000-MW double-extraction CHP case is analyzed, and the operation domains and energy consumption characteristics of three typical heating modes are analyzed. The optimal scheme of heating modes is obtained under different power loads. When the power load is between 783.09 MW and 936.06 MW, Heating Mode 4 (cold reheat steam for HLS1, hot reheat steam for HLS2) has the highest exergy efficiency. This research provides theoretical guidance and a basis for the operation of the CHP unit supplying power load and two heat loads simultaneously.
引用
收藏
页数：16
相关论文
共 47 条
  • [21] Optimization operation model of electricity market considering renewable energy accommodation and flexibility requirement
    Yang, Jinye
    Liu, Chunyang
    Mi, Yuanze
    Zhang, Hengxu
    Terzija, Vladimir
    GLOBAL ENERGY INTERCONNECTION-CHINA, 2021, 4 (03): : 227 - 238
  • [22] Problems of Optimizing the Modes of CHP with a Complex Composition of Equipment, Taking into Account the Peculiarities of the CCGT and Steam Power Units Operation
    Arakelyan, E. K.
    Andryushin, A., V
    Mezin, S., V
    Pashchenko, F. F.
    Kosoy, A. A.
    Yagupova, Y. Y.
    IFAC PAPERSONLINE, 2021, 54 (13): : 268 - 273
  • [23] Research on influence of steam extraction parameters and operation load on operational flexibility of coal-fired power plant
    Wei, Haijiao
    Lu, Yuanwei
    Yang, Yanchun
    Zhang, Cancan
    He, Cong
    Wu, Yuting
    Li, Weidong
    Zhao, Dongming
    APPLIED THERMAL ENGINEERING, 2021, 195
  • [24] Test and optimization of a control algorithm for demand-oriented operation of CHP units using hardware-in-the-loop
    Haase, Patrick
    Thomas, Bernd
    APPLIED ENERGY, 2021, 294
  • [25] Research on synchronous optimization of steam power system for processing units and thermal power plant operation
    Zhao H.
    Zhu W.
    Ye H.
    Dong H.
    Huagong Jinzhan/Chemical Industry and Engineering Progress, 2022, 41 : 44 - 53
  • [26] Comparative analysis of operation in the regimes with by-pass of high pressure heat exchangers for two of the same power but different configuration steam turbine units
    Savic, BM
    Perkovic, B
    Zivanovic, T
    PROCEEDINGS OF THE AMERICAN POWER CONFERENCE, VOL 61 - I AND II, 1999, 61 : 838 - 843
  • [27] Primary frequency regulation capacity enhancement of CHP units: Control strategy combining high pressure valve adjustment and heating extraction steam adjustment
    Liu, Zhaozhao
    Zheng, Zhaohui
    Song, Jiwei
    Wang, Congyu
    CASE STUDIES IN THERMAL ENGINEERING, 2022, 35
  • [28] The Operation Optimization Test of Main Steam Pressure on Large Coal-fired Power Unit
    Kan Weiming
    Yang Zhiping
    Zheng Likun
    Hu Yue
    Fu ZhongGuang
    FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING, PTS 1-8, 2011, 71-78 : 2055 - +
  • [29] Redesign for flexibility through electrification: Multi-objective optimization of the operation of a multi-energy industrial steam network
    Rodriguez, Roman Cantu
    Palacios-Garcia, Emilio J.
    Deconinck, Geert
    APPLIED ENERGY, 2024, 362
  • [30] Thermoeconomic Optimization of Steam Pressure of Heat Recovery Steam Generator in Combined Cycle Gas Turbine under Different Operation Strategies
    Wang, Zhen
    Duan, Liqiang
    ENERGIES, 2021, 14 (16)
12345