scholarly journals Study on the Development and Utilization of Renewable Energy in China

2019 ◽  
Vol 136 ◽  
pp. 02013
Author(s):  
Guizhou Ren ◽  
Fangqing Li ◽  
Gang Liu ◽  
JianXin Ren ◽  
Yudong Liu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Power Grid ◽  
Advanced Technology ◽  
Stable Operation ◽  
Industrialized Countries ◽  
Energy Access ◽  
Fossil Energy ◽  
Development And Utilization ◽  
Strategic Position

With the continuous consumption of fossil energy and non-renewable, countries all over the world pay more and more attention to the use of renewable energy, among which Denmark, Japan, Germany and so on are among the best. Based on the basic national conditions and the energy development situation of our country, the utilization of renewable energy in our country is also promoted to the national strategic position. Experience shows that large-scale renewable energy access to the power grid system can not only meet the electricity demand of industrialized countries. Moreover, the safe and stable operation of the power grid can be realized by advanced technical means. Through the analysis of some advanced technology and equipment research in the development and utilization of renewable energy in foreign power grid, in order to improve the repeatability of our country, The level of development and utilization of raw energy.

scholarly journals Transmission Line Congestion Management for Large-scale Renewable Energy Access to Power Grid with DSM

2019 ◽  
Vol 490 ◽  
pp. 072037
Author(s):  
Zhengfu Liu ◽  
Qifu Lu ◽  
Xiangyu Kong ◽  
Hongxing Wang ◽  
Chao Sheng ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Transmission Line ◽  
Large Scale ◽  
Power Grid ◽  
Congestion Management ◽  
Energy Access

scholarly journals A Joint Grid-Source Planning Method Considering Adaptability of Power System

2021 ◽  
Vol 2095 (1) ◽  
pp. 012012
Author(s):  
Yingying Deng ◽  
Haiyan Wang ◽  
Xu’na Liu ◽  
Bo Chen ◽  
Xinting Yang ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Large Scale ◽  
Structural Characteristics ◽  
Principal Component ◽  
Stable Operation ◽  
Planning Model ◽  
Energy Access ◽  
Optimal Scheme ◽  
Operation Status

Abstract With the large-scale renewable energy access to the power grid, the construction and operation state of the power system have been greatly changed. Therefore, the adaptability of power system to deal with the fluctuation and uncertainty of renewable energy is of great significance to ensure the safe and stable operation of the system and promote the consumption of renewable energy. Based on the structural characteristics and operation status of the power system with high proportion of renewable energy, the adaptability index of the system construction and generators capacity is proposed, which takes into account the security, validity, stability and supply-demand balance of the power system, and comprehensively evaluates the acceptance capacity of the system to the renewable energy. On this basis, a multi-objective power system planning model based on grid-source coordination considering both economy and adaptability is established. The optimal scheme is obtained through the comprehensive decision of the optimal scheme set by the nonlinear improved principal component analysis. Finally, the effectiveness of the adaptability index and the planning model is verified by an example simulation with the improved Gaver-18 system.

scholarly journals Large-Scale Grid Integration of Renewable Energy Resources with a Double Synchronous Controller

2019 ◽  
Vol 9 (24) ◽  
pp. 5548
Author(s):  
Majid Mehrasa ◽  
Edris Pouresmaeil ◽  
Hamid Soltani ◽  
Frede Blaabjerg ◽  
Maria R. A. Calado ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Dynamic Models ◽  
Transfer Functions ◽  
Power Grid ◽  
Energy Resources ◽  
Mechanical Power ◽  
Stable Operation ◽  
Renewable Energy Resources ◽  
Virtual Inertia

This paper provides virtual inertia and mechanical power-based double synchronous controller (DSC) for power converters based on the d- and q-components of the converter current to assure the stable operation of the grid with the penetration of large-scale renewable energy resources (RERs). The DSC is projected based on emulating both the inertia and mechanical power variables of the synchronous generators (SGs), and its performance is compared with a non-synchronous controller (NSC) that is without these emulations. The main contributions of the DSC are providing a large margin of stability for the power grid with a wide area of low and high values of virtual inertia, also improving significantly power grid stability (PGS) with changing properly the embedded virtual variables of inertia, mechanical power, and also mechanical power error. Also, decoupling features of the proposed DSC in which both d and q components are completely involved with the characteristics of SGs as well as the relationship between the interfaced converter and dynamic models of SGs are other important contributions of the DSC over the existing control methods. Embedding some coefficients for the proposed DSC to show its robustness against the unknown intrinsic property of parameters is another contribution in this paper. Moreover, several transfer functions are achieved and analyzed that confirm a more stable performance of the emulated controller in comparison with the NSC for power-sharing characteristics. Simulation results confirm the superiority of the proposed DSC in comparison with other existing control techniques, e.g., the NSC techniques.

scholarly journals Control method for the stable operation of distributed inverters following the introduction of large-scale renewable energy to a remote island grid

Clean Energy ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 196-207
Author(s):  
Shoichi Sato ◽  
Yasuhiro Noro
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Control Method ◽  
Synchronous Generator ◽  
Stable Operation ◽  
Battery Energy Storage Systems ◽  
Simulation Results ◽  
Battery Energy ◽  
Systems Simulation ◽  
Different Characteristics

Abstract The introduction of large-scale renewable energy requires a control system that can operate multiple distributed inverters in a stable way. This study proposes an inverter control method that uses information corresponding to the inertia of the synchronous generator to coordinate the operation of battery energy storage systems. Simulation results for a system with multiple inverters applying the control method are presented. Various faults such as line-to-line short circuits and three-phase line-to-ground faults were simulated. Two fault points with different characteristics were compared. The voltage, frequency and active power quickly returned to their steady-state values after the fault was eliminated. From the obtained simulation results, it was verified that our control method can be operated stably against various faults.

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.

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