Power Plant Performance Optimization Experiment on Primary Frequency Regulation

2013 ◽  
Vol 437 ◽  
pp. 769-774
Author(s):  
Li Chen ◽  
Nian Su Hu ◽  
Qin Gang Li
Keyword(s):  
Power Plant ◽  
High Power ◽  
Performance Optimization ◽  
Control Model ◽  
Plant Performance ◽  
Frequency Regulation ◽  
Large Power ◽  
Power Plant Operation ◽  
Primary Frequency ◽  
Safety And Stability

As the increment of the power grid scale and the requirement of high power quality, the requirement of the primary frequency regulation (PFR) of large power plant i becomes more and more strictly. In order to improve the PFR performance and to ensure the safety and stability of power plant operation, an experimental analysis was carried out to optimize the control model and parameters of the CCS, DEH and primary frequency.

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

scholarly journals Analytical Approach to Sampling Estimation of Underwater Tunnels Using Mechanical Profiling Sonars

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1900
Author(s):  
Vitor Augusto Machado Jorge ◽  
Pedro Daniel de Cerqueira Gava ◽  
Juan Ramon Belchior de França Silva ◽  
Thais Mancilha ◽  
Waldir Vieira ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Hydroelectric Power ◽  
Large Power ◽  
Unmanned Underwater Vehicles ◽  
Power House ◽  
Simulated Environment ◽  
Sonar Sensor ◽  
Power Plant Operation ◽  
Plant Power

Hydroelectric power plants often make use of tunnels to redirect the flow of water to the plant power house. Such tunnels are often flooded and can span considerable distances. Periodical inspections of such tunnels are highly desirable since a tunnel collapse will be catastrophic, disrupting the power plant operation. In many cases, the use of Unmanned Underwater Vehicles (UUVs) equipped with mechanical profiling sonars is a suitable and affordable way to gather data to generate 3D mapping of flooded tunnels. In this paper, we study the resolution of 3D tunnel maps generated by one or more mechanical profiling sonars working in tandem, considering synchronization and occlusion problems. The article derives the analytical equations to estimate the sampling of the underwater tunnels using mechanical profiling sonars (scanning sonars). Experiments in a simulated environment using up to four sensors simultaneously are presented. We also report experimental results obtained by a UUV inside a large power plant tunnel, together with a first map of this environment using a single sonar sensor.

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.

Modeling and Simulation of Nuclear Power Units for Primary Frequency Regulation Research

2013 ◽  
Author(s):  
Zhenpeng Tang ◽  
Fuyu Zhao ◽  
Pengfei Wang ◽  
Li Chen ◽  
Huawei Fang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Power System ◽  
Nuclear Power ◽  
Frequency Stability ◽  
Control Mode ◽  
Frequency Regulation ◽  
Pressurized Water ◽  
Matlab Simulink ◽  
Primary Frequency

The power system frequency stability problem has been the focus of attention since 1920s. Primary frequency regulation (PFR) is one of vital methods to maintain frequency stability, especially when the power system suffers a sudden load disturbance, such as the substation tripping or generator outage accident. To a power system, the more power units participating in PFR, the frequency stability will be controlled better. With the rapid development of nuclear power units in China, the study of the nuclear power units participating in PFR of power system has becoming a pressing problem. In the present study, a detailed nonlinear dynamic mathematical model of the whole pressurized water reactor (PWR) nuclear power plant is built. The dynamic calculation codes are compiled to dynamic link library (DLL) files, which are developed by using FORTRAN language, and the compiled DLL files are embedded into MATLAB/SIMULINK simulation platform by using S-function, the control systems are designed and the whole system of PWR nuclear power plant is simulated in MATLAB/SIMULINK finally. In this method, the operation and control mode of PWR participating in PFR of power system is analyzed and simulated. The simulations results show that the PWR nuclear units are feasible in participating in PFR from safety and economy.

Improving the OTEC Power Plant Performance by Metal Hydride Energy Systems

1997 ◽  
Vol 119 (2) ◽  
pp. 145-151 ◽  
Author(s):  
M. Gambini
Keyword(s):  
Power Plant ◽  
Metal Hydride ◽  
Performance Optimization ◽  
Energy System ◽  
Point Of View ◽  
Plant Performance ◽  
Working Fluid ◽  
Fluid Temperature ◽  
Thermal Energy Conversion ◽  
Ocean Thermal Energy

A new system to improve the present OTEC (ocean thermal energy conversion) power plant performance is here presented. This is a metal hydride energy system operating as a “temperature upgrading” device which allows an increase of the OTEC plant working fluid temperature at the turbine inlet. The integrated MHTUP (metal hydride temperature upgrading)—OTEC plant has been investigated, taking into account the dynamic operations of MHTUP system and the OTEC pumping power increase due to the water circulation in the MHTUP system. The results show an increase in the OTEC net power of about 20 percent and the technological feasibility of the proposal. The large amounts of metal hydride and of heat transfer surface required by MHTUP system involve a critical situation from an economical point of view. The further analysis, particularly regarding the performance optimization and new plant arrangement of the MHTUP system, have to be developed in order to attain the economical feasibility of the proposal.

scholarly journals Simulation Evaluation of Fast Frequency Response Capacity of New Energy Power Stations

2021 ◽  
Vol 245 ◽  
pp. 01030
Author(s):  
Chang Wanzheng ◽  
Wang Nan ◽  
Cheng Yan ◽  
Sun Shumin ◽  
Wang Yanzhuo ◽  
...  
Keyword(s):  
Power Grid ◽  
State Power ◽  
The State ◽  
Test Method ◽  
Frequency Regulation ◽  
Large Power ◽  
Power Stations ◽  
Simulation Evaluation ◽  
New Energy ◽  
Primary Frequency

The number of new energy power stations in China is boosting in recent years, a large number of conventional power supplies have been replaced, resulting in severe problems in controlling the frequency of power grids and easily leading to frequency issues of the state power grid. When large frequency disturbance occurs in power grid, renewable energy stations can participate in primary frequency regulation of power grid and provide support for system frequency, and the primary frequency regulation capability of the large power grid in sending end is significantly enhanced. In this study, a simulation evaluation method was proposed for the FFR controller of new energy power stations based on the RT-LAB real-time simulation analysis platform. The FFR controller was connected to in the simulation model of the state power grid via I/O physical interfaces and MODBUS communication, so as to conduct the step disturbance test, anti-disturbance performance verification test and automatic generation control (AGC) coordination test and hardware-in-the-loop simulation test of the controller. Results of the tests proved that the test method proposed in this study is accurate and reliable, and help improve the performance of a new energy power station in the state power grid.

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