Research on the Primary Frequency Regulation of the Large Capacity Thermal Power Units

2014 ◽  
Vol 608-609 ◽  
pp. 915-919 ◽  
Author(s):  
Hong Xia Wu
Keyword(s):  
Power Plant ◽  
Control Method ◽  
Power Grid ◽  
Thermal Power ◽  
Frequency Regulation ◽  
Load Curve ◽  
Large Capacity ◽  
Continuous Increase ◽  
Important Index ◽  
Primary Frequency

Frequency is an important index of power quality, primary frequency regulation is of great significance for maintaining the grid frequency. In recent years, with the expansion of the power grid capacity and the continuous increase of the generator capacity, the large capacity units play a role is becoming more and more important in the primary frequency regulation of power grid. This paper takes ultra supercritical coal-fired units (1000MW) of a power plant of Hubei for example, primary frequency regulation control method, requency offset load curve and so on were studied through relevant test.

Research and Optimization of Thermal Power Unit's Automatic Control Based on Frequency Regulation Ability of Power Grid

2013 ◽  
Vol 330 ◽  
pp. 606-610 ◽  
Author(s):  
Jun Li ◽  
Wei Wei Li
Keyword(s):  
Power Systems ◽  
Automatic Control ◽  
Power Grid ◽  
Thermal Power ◽  
Optimal Operation ◽  
Theory And Practice ◽  
Frequency Regulation ◽  
Frequency Compensation ◽  
The Stability ◽  
Primary Frequency

Wind power and other new energy connected to power grid bring new challenges to optimal operation of power systems. The stability of power grid mainly depends on primary frequency compensation and secondary frequency compensation of thermal power units. By analyzing the theory and practice of DEH and coordinated control system (CCS) of thermal power units, combined with the insufficient of actual primary frequency compensation and automatic power generation control (AGC) strategy response to frequency of accidents, the optimization of primary frequency compensation and AGC of thermal power units automatic control were offered. The practical application results show that the proposed control strategy can effectively control the thermal power units to achieve the stability of power grid frequency.

scholarly journals Analysis of Primary Frequency Regulation Ability of Shandong Power Grid Thermal Power Unit

2021 ◽  
Vol 1820 (1) ◽  
pp. 012022
Author(s):  
En Ren Liu ◽  
Jun Li ◽  
Song Gao ◽  
Xiang rong Meng ◽  
Shuo Shi ◽  
...  
Keyword(s):  
Power Unit ◽  
Power Grid ◽  
Thermal Power ◽  
Frequency Regulation ◽  
Primary Frequency

scholarly journals Optimization of Primary Frequency Regulation of 650MW Thermal Power Plant

2021 ◽  
Vol 1846 (1) ◽  
pp. 012077
Author(s):  
En ren Liu ◽  
Jun Li ◽  
Song Gao ◽  
Xiang rong Meng ◽  
Shuo Shi ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Frequency Regulation ◽  
Primary Frequency

Research on Influence Factor of Primary Frequency Regulation Performance for Thermal Power Plant

2013 ◽  
Vol 448-453 ◽  
pp. 2040-2044 ◽  
Author(s):  
Zheng Yu Liang ◽  
Shan Shan Li
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Frequency Regulation ◽  
Stable Operation ◽  
Fast Time ◽  
Control Logic ◽  
Variable Quantity ◽  
Load Variable ◽  
Primary Frequency

As a basic auxiliary service, primary frequency regulation (PFR) is provided with significant effect in secure and stable operation for grids. Thermal power plants undertake important task in PFR by virtue of it is main type in grid-connected power plants. However, some problems such as slow response, inadequate load variable quantity, or even reverse regulating effect exist in actual PFR process. In PFR relative control logic, PFR command, load variable quantity command and main steam pressures influence must be taken into consideration. Regulating valves flow characteristics and adjustment of overlap degree can result in imbalance of load regulating under different working point. Frequency data utilized by grid dispatching center and power plant are inconsistent so that PFR evaluation may be affected. On the premise of safe operation in power plant, energy storage can improve units load in a fast time. A series of optimization measurements are put forward on the basis of the above four influence factors. In accordance with respective influence characteristics, these measurements possess a certain reference significance to improve performance index of PFR.

Analysis on Primary Frequency Regulation Function Tests for Thermal Power Units

2014 ◽  
Vol 986-987 ◽  
pp. 1187-1190
Author(s):  
Li Jie Kang ◽  
Wei Ping Liang
Keyword(s):  
Power Supply ◽  
Load Capacity ◽  
Power Grid ◽  
Thermal Power ◽  
Vital Role ◽  
Frequency Regulation ◽  
Regulation Function ◽  
The Stability ◽  
Primary Frequency ◽  
Power Dispatching

With the increase of the load capacity and the development of the automation degree, the power dispatching center has a higher requirement for the primary frequency regulation function of the unit aircrew. After a certain period of time when the unit has been put into operation, the primary frequency regulation function must have the conditions to be put into operation, so that the unit can be involved in grid frequency at any time when the conditions are satisfied and the power supply quality can be fully guaranteed [1]. The regulation performance of primary frequency regulation plays a vital role in maintaining the stability of the unit aircrew and the power grid, so it is very necessary to conduct the frequency tests for the thermal power units [2]. In this paper, we describe the disturbance tests and recovery tests under different load points and different network frequencies. Through the analysis, we can draw the conclusion that the primary frequency regulation function of unit 1 can fully meet the requirement of the frequency regulation of the power grid.

scholarly journals Primary Frequency Regulation of Intelligent Building-type Virtual Power Plant

2021 ◽  
Vol 1966 (1) ◽  
pp. 012053
Author(s):  
Yong Cui ◽  
Fei Xiao ◽  
Jun Gu ◽  
Weihong Wang ◽  
Liang Cao ◽  
...  
Keyword(s):  
Power Plant ◽  
Frequency Regulation ◽  
Virtual Power ◽  
Intelligent Building ◽  
Virtual Power Plant ◽  
Building Type ◽  
Primary Frequency
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