scholarly journals Study on power load adjustment capacity of a 300MW cogeneration unit in heating season

2021 ◽  
Vol 329 ◽  
pp. 01006
Author(s):  
Jinxu Lao ◽  
Wei Zheng ◽  
Lingkai Zhu ◽  
Junshan Guo ◽  
haizhen Lv
Keyword(s):  
Power Generation ◽  
Load Capacity ◽  
Power Grid ◽  
Operation Mode ◽  
Test Method ◽  
Heating Season ◽  
Peak Shaving ◽  
Power Load ◽  
New Energy ◽  
Installed Capacity

After the formulation of the "3060" double carbon target, the installed capacity of new energy has increased rapidly and the proportion of power generation has become higher and higher. In the heating season, under the operation mode of "determining electricity by heat" of cogeneration units, in order to meet the consumption of renewable energy and the heating guarantee of people's livelihood, the contradiction with power grid peak shaving is increasing. This paper mainly introduces the load capacity of a 300MW cogeneration unit in the heating season. Through the test method, find out the load capacity of the unit under different heating capacity, which can be used as a reference for power generation enterprises and power grid dispatching.

scholarly journals Comprehensive Evaluation of the New Energy Power Generation Development at the Regional Level: An Empirical Analysis from China

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4580 ◽  
Author(s):  
Jin ◽  
Meng ◽  
Li
Keyword(s):  
Power Generation ◽  
Comprehensive Evaluation ◽  
Entropy Method ◽  
Incremental Value ◽  
Multiple Dimensions ◽  
Relative Value ◽  
New Energy ◽  
Generating Capacity ◽  
Installed Capacity ◽  
Development Gap

In order to build an environment-friendly society and realize the coordinated allocationand effective utilization of resources and finally achieve China’s energy supply security, it isimperative to vigorously develop new energy sources. This study establishes a four-level newenergy power generation (NEPG) development index system from multiple dimensions. Takingthe installed capacity and generating capacity of China’s NEPG in 2016 and 2017 as samples, weused the improved entropy method, to analyze the development of different types of NEPG among31 provinces from three aspects: absolute value, relative value, and incremental value. Finally, wecomprehensively evaluated the NEPG development in each province. The empirical analysisshows that the spatial distribution of NEPG development in China is uneven, the growth rate isdifferent, the development gap is obvious, and the development efficiency is quite different.

scholarly journals Analysis of Complementary Characteristics of Wind/PV/hydro Power Based on the Bundled Output

2018 ◽  
Vol 246 ◽  
pp. 01017 ◽  
Author(s):  
Yanhong Dou ◽  
Wei Ding ◽  
Yan Huang ◽  
Jing Hu ◽  
Yu Li ◽  
...  
Keyword(s):  
Power Generation ◽  
Clean Energy ◽  
Dry Season ◽  
Generation System ◽  
Joint Power ◽  
Hydro Power ◽  
Planning And Design ◽  
New Energy ◽  
Power Generation System ◽  
Installed Capacity

There is complementarity among wind, photovoltaic, and hydro power (wind/PV/hydro power), which is closely related to the bundled installed capacity of wind/PV/hydro complementary power generation system and regulating ability of hydropower. This paper evaluates the complementary characteristics among wind, PV, and hydro power though the ability of the system to output power smoothly. First, the ratio of installed capacity of wind to PV power is determined by minimizing the volatility of wind/PV joint power generation. Second, an optimization model, with the objective of maximizing grid-connected and steady output of wind/PV/hydro complementary system in the dry season, to determine the bundled output of the system is proposed. Third, the complementary characteristics of wind/PV/hydro power are analyzed by the bundled output and the absorptive rate of new energy in the dry season. The implication in the Yalong River shows that: (1) The optimum ratio of installed capacity of wind to PV power is 0.7. (2) The bundled output of wind/PV/hydro system is 1.742GW, in which 6.3GW are bundled capacity of wind/PV/hydro power. (3) The complementarity of wind/PV/hydro power will be strengthened with the increase of runoff in the dry season and the decrease of the new energy installed capacity. The research can provide guidelines for the planning and design of the clean energy complementary base.

The Feasibility Study of Distributed Photovoltaic Power Generation System in Western Region of China

2014 ◽  
Vol 1070-1072 ◽  
pp. 64-67
Author(s):  
Gang Sheng Li ◽  
Yi Na Zhang ◽  
Long Xia ◽  
Chen Zhou
Keyword(s):  
Power Generation ◽  
Power Grid ◽  
Operation Mode ◽  
Life Quality ◽  
Geographic Location ◽  
Western Region ◽  
Parallel Operation ◽  
Photovoltaic Power ◽  
Photovoltaic Mode ◽  
The Stability

Due to the natural environment, geographic location, the technical conditions and restrictions of many factors, centralized parallel operation of power grid the west extension and popularization in our country with high difficulty and feasibility. The distributed photovoltaic power generation possesses the following advantages: less investment, flexibility and compatibility. The joint operation of DG with power grid brings tremendous variation in control and operation for modern power system, ultimately the stability of power supply is enhanced and the life quality of residents is improved in western region of China. This paper explores the operation mode of distributed photovoltaic power generation in remote areas, and introduces the concrete operation mode of the project, analyzes the adaptability of distributed photovoltaic mode. Finally, the feasibility of the application of the distributed photovoltaic power generation in the western region of China is analyzed in this paper.

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.

Installed Capacity Prediction of Biomass Power Generation in China Based on Gray Dynamic Model

2013 ◽  
Vol 291-294 ◽  
pp. 221-224
Author(s):  
Zhi Bin Liu ◽  
Ai Sheng Ren ◽  
Li Wei Hou
Keyword(s):  
Power Generation ◽  
Global Warming ◽  
Energy Structure ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
The World ◽  
New Energy ◽  
Installed Capacity ◽  
Capacity Prediction ◽  
Carbon Economy

The low-carbon economy is attention increasingly all over the world, and which has become the best economic mode to cope with global warming. And it is the important way to achieve the low carbon economy, optimize the energy structure through developing the biomass power generation and other new energy. In recent years, the development of biomass power generation in China is rapid, there are also some problems. Therefore, it is necessary to predict the biomass power generation industry development, especially the installed capacity of biomass power generation. In this paper, the authors used the GM (1, 1) model to predict the installed capacity of biomass power generation, which can reveal the evolution of things under the circumstances of less data and less information. The installed capacity prediction from 2011 to 2020 showed that the results given by this model were reliable, and it is feasible to predict the installed capacity of biomass power generation.

scholarly journals The Application of Artificial Intelligence Technology in Smart Energy

2020 ◽  
Vol 185 ◽  
pp. 01037
Author(s):  
Xiaotao Jiang ◽  
Ming Xin Zhao ◽  
Wei Liu ◽  
Ruo Bing Xu
Keyword(s):  
Artificial Intelligence ◽  
Power System ◽  
Power Flow ◽  
Power Grid ◽  
Operation Mode ◽  
Energy System ◽  
Effective Measure ◽  
New Energy ◽  
Artificial Intelligence Technology ◽  
Grid Operation

At present, the development of energy system tends to be clean and intelligent. China has upgraded the development of smart energy to national strategy. As the core link of energy system, power system is widely used, with strong regulation ability and complex control, especially with the increasing proportion of new energy and various forms of consumption. Now the power system presents the characteristics of complex nonlinearity, strong uncertainty and strong coupling. There are many limitations in traditional modeling, optimization and control technology, and artificial intelligence technology will be an effective measure to solve the control and decision-making problems of complex system. Firstly, this paper analyzes the application prospect of artificial intelligence technology in power system and the application of artificial intelligence technology in power grid operation. It establishes the prediction model of power grid operation mode, the model can help operators of power system quickly adjust the power flow to convergence state, and then greatly improve the calculation efficiency of power grid operation mode.

Research on Frequency Stability Control Strategy for the Third Line Defense of Sending-End Power System

2013 ◽  
Vol 846-847 ◽  
pp. 329-334
Author(s):  
Shu Yong Song ◽  
Xin Yuan Liu ◽  
Yi Kai Sun ◽  
Wen Chao Zhang
Keyword(s):  
High Frequency ◽  
Load Capacity ◽  
Power Grid ◽  
Frequency Stability ◽  
Stability Control ◽  
Shanxi Province ◽  
Operational Experience ◽  
Power Load ◽  
Frequency Generator ◽  
High Frequency Generator

Regional energy base with large installed capacity, small local power load capacity and great amount of power transmission have been more and more common in China. For this kind of sending end power grid, the 3rd line of defense for frequency stability is crucial. The high frequency generator tripping is an effective emergency frequency control measure. But its setting and configuration mainly relies on operational experience and off-line simulation calculation. An equivalent model suitable for the analysis and setting calculation of high frequency generator tripping is introduced firstly. Based on the model, and aimed at an actual frequency emergency control problem, a scheme for high frequency generator tripping is proposed. Furthermore, a speed-up tripping scheme using df/dt criterion is proposed to optimize the frequency response. Numerical simulations are conducted on real power grid model of Shanxi province to demonstrate the effectiveness and adaptability of this scheme. The setting principle and calculation method of high frequency generator tripping can introduce to similar power grid for reference.

The Study on Acceptable Capacity of Wind Power for Gansu Power Grid Based on Power Balance

2012 ◽  
Vol 236-237 ◽  
pp. 720-724
Author(s):  
Xi Min Cao ◽  
Xiang Dong Xu ◽  
Fu Jun Wang ◽  
Tian Qi Liu ◽  
Zhen Huan Chen ◽  
...  
Keyword(s):  
Wind Power ◽  
Power Output ◽  
Power Grid ◽  
Operating Mode ◽  
Power Balance ◽  
Power Load ◽  
Load Characteristics ◽  
Installed Capacity ◽  
Daily Load ◽  
Grid Based

Randomness and volatility of wind power, the accepted capacity of wind power (ACWP) will become the wind power planning early first thing to consider with the increasement of the scale of wind power in grid. In this paper, we studied the correlation between wind power output and the change of daily load. The ACWP were analysis based on the power load characteristics, peak-valley difference of the Gansu Power Grid and power balance. The maximum installed capacity of wind power integrated of the five typical operating mode in 2011 is given. It is pointed out that ACWP is less than the planned capacity. At last, the specific measures to increase the ACWP are proposed.

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