Effect Study of Large-Scale PV Power Access to HVDC System

2013 ◽  
Vol 772 ◽  
pp. 640-645
Author(s):  
Hua Ling Han ◽  
Zhen Li ◽  
Tao Shi ◽  
Ning Chen
Keyword(s):  
Power Generation ◽  
Large Scale ◽  
Power Grid ◽  
Operating Mode ◽  
Effect Study ◽  
Stable Operation ◽  
Long Distance ◽  
Hvdc System ◽  
Set Up ◽  
Pv Power Generation

In order to realize electric power high voltage, large capacity, long distance transmission and regional power grid interconnection, dc transmission system is an important technical means, and it plays an important role for cross-regional given of new large-scale energy power generation. Based on large scale photovoltaic (PV) power generation access to the northwest power grid as the object, this article set up PV power station model, analysis the influence of large-scale PV power access to HVDC system under different PV station operating mode and the grid disturbance situation. At last this paper puts forward suggestions and measures to guarantee stable operation of large scale PV power generation access to the system.

scholarly journals Key Operational Issues on the Integration of Large-Scale Solar Power Generation—A Literature Review

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5951 ◽  
Author(s):  
Wei Li ◽  
Hui Ren ◽  
Ping Chen ◽  
Yanyang Wang ◽  
Hailong Qi
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
Large Scale ◽  
Solar Power ◽  
Negative Impact ◽  
Power Grid ◽  
Frequency Regulation ◽  
Solar Power Generation ◽  
Pv Power Generation ◽  
Solar Generation

Solar photovoltaic (PV) power generation has strong intermittency and volatility due to its high dependence on solar radiation and other meteorological factors. Therefore, the negative impact of grid-connected PV on power systems has become one of the constraints in the development of large scale PV systems. Accurate forecasting of solar power generation and flexible planning and operational measures are of great significance to ensure safe, stable, and economical operation of a system with high penetration of solar generation at transmission and distribution levels. In this paper, studies on the following aspects are reviewed: (1) this paper comprehensively expounds the research on forecasting techniques of PV power generation output. (2) In view of the new challenge brought by the integration of high proportion solar generation to the frequency stability of power grid, this paper analyzes the mechanisms of influence between them and introduces the current technical route of PV power generation participating in system frequency regulation. (3) This section reviews the feasible measures that facilitate the inter-regional and wide-area consumption of intermittent solar power generation. At the end of this paper, combined with the actual demand of the development of power grid and PV power generation, the problems that need further attention in the future are prospected.

Research of Available Capability of Accommodating PV Power Generation of Tibet Power Grid Based on Capacity of Peak Load Regulation Constraints

2014 ◽  
Vol 1008-1009 ◽  
pp. 40-43
Author(s):  
Xiao Yan Jiang ◽  
Chuan He ◽  
Xiao Fei Liu
Keyword(s):  
Power Generation ◽  
Direct Current ◽  
Power Grid ◽  
Peak Load ◽  
Stable Operation ◽  
Power Station ◽  
Load Regulation ◽  
Pv Grid ◽  
Pv Power Generation ◽  
Grid Based

In recent years, along with the continuous expansion of the scale of photovoltaic (PV) power generation in Tibet, the proportion of PV Grid-connected capacity for Tibet power grid became higher increasingly, which brought great challenges to the secure and stable operation of the grids. So we do those studies on the available capability of accommodating PV power generation of Tibet power grid. Based on the way of capacity of peak load regulation and the minimum output in 2012, this paper simulates and analyzes the available capability of accommodating PV power generation under three boundary conditions, considering the factor of Qinghai-Tibet direct current participating in regulation. The analysis supports that the rate of discharging light accounts for 34.09 percent, 20.57 percent and 5.61 percent after PV power station connecting to the grid, if regardless of the measures of depth peak load regulation such as discharging light.

Research on New Energy Integration Capacity in Power Grid

2013 ◽  
Vol 448-453 ◽  
pp. 2223-2227
Author(s):  
Jun Chuan Jia ◽  
Bing Zhao ◽  
Xu Zhi Luo
Keyword(s):  
Large Scale ◽  
System Analysis ◽  
Comprehensive Evaluation ◽  
Power Grid ◽  
Peak Load ◽  
Stable Operation ◽  
Energy Integration ◽  
New Energy ◽  
Large Scale Integration ◽  
Scale Integration

Due to their high inter-temporal variation and intermittence, large-scale integration of the new energies, such as wind power and photovoltaic power, will pose great challenges to the safe and stable operation of power system. Analysis on gird stability and adaptability before integrating the new energy should be made. The paper investigates all kinds of restrictions and assesses each constrained capacity from the perspective of steady-state and transient voltage, frequency stability, cross-section transmission limit and peak load regulating capacity, respectively. Then the comprehensive evaluation on the capability to accommodate new energy for a power grid is accomplished. Take a practical grid for example, its accommodation capacity for new energy is calculated based on the above-mentioned method, which provides a theoretical basis for the grid to accommodate new energy and planning and construction of new energy.

scholarly journals Study of Modeling of Hybrid Energy System for Optimum Power Extraction from the System to the Grid

2021 ◽  
Vol 7 (2) ◽  
pp. 19-24
Author(s):  
Ashish Srivastava ◽  
Dr. M S Dash
Keyword(s):  
Power Generation ◽  
Hybrid System ◽  
Large Scale ◽  
Energy System ◽  
Stable Operation ◽  
Hybrid Energy ◽  
Power Extraction ◽  
Energy Demands ◽  
Attractive Option ◽  
Micro Grid

With the growing demand of electricity, deployment of micro grid is becoming an attractive option to meet the energy demands. At present, large-scale wind/solar hybrid system is of great potential for development. The large-scale wind/solar hybrid system is of higher reliability compared with wind power generation alone and solar power generation alone However, a grid-connected micro grid suffers from critical stability problems during a power grid failure. For stable operation of the micro grid during a grid failure. In this paper, the transition stability of the micro grid is examined during a power failure

scholarly journals Frequency regulation strategy of photovoltaic system based on system identification

2021 ◽  
Vol 252 ◽  
pp. 02082
Author(s):  
Li Zhenjie ◽  
Hou Guangsong ◽  
Cheng Zhaolong ◽  
Niu Wenhui ◽  
Hu Guohua
Keyword(s):  
Power Generation ◽  
System Identification ◽  
Large Scale ◽  
Control Method ◽  
Power Grid ◽  
Frequency Deviation ◽  
Photovoltaic System ◽  
Frequency Regulation ◽  
Photovoltaic Power ◽  
System Frequency

The large-scale grid connection of photovoltaic power generation results in the power system frequency fluctuation and frequency regulation capacity decline, which endangers the dynamic security of power grid frequency. In order to reduce the frequency deviation of power grid and tap the potential of photovoltaic power generation participating in frequency regulation, a control method of photovoltaic power participating in frequency regulation of power grid is proposed in this paper. The maximum allowable power of photovoltaic power is predicted through system identification, and the load shedding rate is determined based on this, and the output power is corrected according to the system frequency deviation to participate in frequency regulation of power grid. The model based on MATLAB Simulation results shows the effectiveness of the proposed method.

scholarly journals Forecast of photovoltaic power generation based on DBSCAN

2021 ◽  
Vol 236 ◽  
pp. 02016
Author(s):  
Jiaying Zhang ◽  
Yingfan Zhang
Keyword(s):  
Power Generation ◽  
Prediction Model ◽  
Power Plants ◽  
Large Scale ◽  
Clustering Algorithm ◽  
Renewable Energy Sources ◽  
Stable Operation ◽  
Power Prediction ◽  
Photovoltaic Power ◽  
Bidirectional Lstm

The power output of the photovoltaic power generation has prominent intermittent fluctuation characteristics. Large-scale photovoltaic power generation access will bring a specific impact on the safe and stable operation of the power grid. With the increase in the proportion of renewable energy sources such as wind power and photovoltaics, the phenomenon of wind abandonment and light abandonment has further increased. The photovoltaic power generation prediction is one of the critical technologies to solve this problem. It is of outstanding academic and application value to research photovoltaic power generation prediction methods and systems. Therefore, accurately carrying out the power forecast of photovoltaic power plants has become a research hot point in recent years. It is favored by scholars at home and abroad. First, this paper builds a simulation model of the photovoltaic cell based on known theoretical knowledge. Then it uses the density clustering algorithm (DBSCAN) in the clustering algorithm and classifies the original data. Finally, according to a series of problems such as the slow modeling speed of photovoltaic short-term power prediction, the bidirectional LSTM photovoltaic power prediction model, and CNN-GRU photovoltaic power prediction model based on clustering algorithm are proposed. After comparing the two models, it is concluded that the bidirectional LSTM prediction model is more accurate.

scholarly journals Research on power system scheduling method based on cross-platform sharing

2021 ◽  
Vol 2087 (1) ◽  
pp. 012083
Author(s):  
FengKai Lin ◽  
YanRong Li ◽  
YaWei Liu ◽  
LingXiao Chen
Keyword(s):  
Power System ◽  
Large Scale ◽  
Power Grid ◽  
Wide Distribution ◽  
Automation System ◽  
Stable Operation ◽  
Depth Study ◽  
Large Complex System ◽  
Key Issues ◽  
Cross Platform

Abstract As a large, complex system with wide distribution and high real-time, the safe, stable and reliable operation of the power system is inseparable from the power automation system. In this paper, an in-depth study is conducted on the key issues of this solution in the process of software cross-platform integration around the EPRI graphic center method, combined with the power data interface standard. The dispatch center graphics system and the dispatch center power graphics application method are discussed in detail in the paper. In addition, the paper also explains the online calibration system for relay protection ratings with smart grid dispatching technology support system. The methods and sample systems in this paper have been practically applied in large scale power grid dispatching centers, providing a reliable guarantee for the safe and stable operation of the power grid.

scholarly journals Analysis of Output Characteristics of Typical Distributed Wind Power

2019 ◽  
Vol 79 ◽  
pp. 03017
Author(s):  
Mingyu Dong ◽  
Dezhi Li ◽  
Fenkai Chen ◽  
Meiyan Wang ◽  
Rongjun Chen ◽  
...  
Keyword(s):  
Wind Power ◽  
Power Output ◽  
Power Distribution ◽  
Large Scale ◽  
Power Grid ◽  
Stable Operation ◽  
Smart Power ◽  
Power Exchange ◽  
The Future ◽  
Output Characteristics

With the development of smart power distribution technology in the future, a large range of power supply load (such as distributed wind power generation) will appear on the power receiving end. When distributed wind power is connected to the power grid on a large scale, it will have a certain impact on the safe and stable operation of the power grid. However, if the wind power output characteristics can be analyzed and the wind power output is properly regulated, the one-way flow of power from the distribution network to the user side will be broken, so that the future "network-load" has dual interaction characteristics based on response and substantial power exchange.

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