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Fault Ride Through Strategy of DFIG Using Rotor Voltage Direct Compensation control Under Voltage Phase Angle Jump

CSEE Journal of power and Energy systems 2019年第4期5卷 515-523页

作者： Xinshou Tian Weisheng Wang Xiang Li Yongning Chi Yan Li Haiyan Tang State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems(China Electric Power Research Institute) Beijing 100192China State Grid Beijing Changping Electric Power Supply Com-pany Beijing 100031China

Wind power has developed rapidly in recent years,and large-scale wind power facilities connected to power grids will bring many new *** new operation charac-teristics of power grids with doubly-fed induction generator(DFIG)may exhibit,for example voltage phase angle jumps(VPAJ).VPAJ can negatively impact the fault ride through(FRT)performance of *** paper firstly investigates the physical mechanism and the operation characteristics of DFIG with *** is noted that the current control strategies designed for voltage amplitude changes are not suitable for ***,the paper develops an FRT optimization control strategy under VPAJ which optimizes the DFIG operation ***,simulations of a 250 MW wind farm are presented which validate the proposed FRT strategy.

关键词： DFIG FRT strategy rotor voltage direct compensation control voltage phase angle jump

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Day-ahead Optimal Dispatch Model for Coupled System Considering Ladder-type Ramping Rate and Flexible Spinning Reserve of Thermal power Units

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Journal of Modern power systems and Clean Energy 2022年第6期10卷 1482-1493页

作者： Longjie Yang Niancheng Zhou Guiping Zhou Yuan Chi Ning Chen Lei Wang Qianggang Wang Dongfeng Chang State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing UniversityChongqing 400044China State Grid Liaoning Electric Power Company Limited Shenyang 110006China State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems(China Electric Power Research Institute) Nanjing 210003China Xi’an Thermal Power Research Institute Company Limited Xi’an 710054China IEEE

In northern China,thermal power units(TPUs)are important in improving the penetration level of renewable *** such areas,the potentials of coordinated dispatch of renewable energy sources(RESs)and TPUs can be better realized,if RESs and TPUs connected to the power grid at the same point of common coupling(PCC)are dispatched as a coupled ***,the definition of the coupled system is introduced,followed by an analysis on its ***,based on the operation characteristics of deep peak regulation(DPR)of TPUs in the coupled system,the constraint of the ladder-type ramping rate applicable for day-ahead dispatch is proposed,and the corresponding flexible spinning reserve constraint is further ***,considering these constraints and peak regulation ancillary services,a day-ahead optimal dispatch model of the coupled system is ***,the operational characteristics and advantages of the coupled system are analyzed in several case studies based on a real-world power grid in Liaoning province,*** numerical results show that the coupled system can further improve the economic benefits of RESs and TPUs under the existing policies.

关键词： Coupled system ladder-type ramping rate flexible spinning reserve day-ahead optimal dispatch deep peak regulation peak regulation ancillary services

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Study on Wind Speed Model Considering Flow Around the Tower and Its Impact on Output power of Wind Turbine

Study on Wind Speed Model Considering Flow Around the Tower ...

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2019 IEEE Sustainable power and Energy Conference, iSPEC 2019

作者： Chang, Xiao Li, Huipeng An, Qi Liu, Yizhao Li, Shengwen Wang, Hao Taiyuan University of Technology State Grid Shanxi Electric Power Research Institute Shanxi Key Lab of Power System Operation and Control Taiyuan China Taiyuan University of Technology State Grid Jinzhong Power Supply Company Shanxi Key Lab of Power System Operation and Control Jinzhong China

ISBN: (纸本)9781728149301

A downstream wind turbine experiences a decrease in power output due to wind speed weakening caused by the shelter of tower. In order to calculate the effect on WTG's output power quantitatively caused by the shelter of tower, a wind speed variation model of tower is proposed. The presented model is used to evaluate the effect of the flow around the tower on WTG's output power, which takes into account the wake effect, mountain terrain and random wind direction. The output power of wind turbines is calculated by using simulation method with considering the flow around the tower effect. Results are compared with the actual monitoring data of a wind farm in Shanxi, and it shows that the influence of flow around the tower on WTG cannot be ignored in some specific conditions. Therefore, the research can provide theoretical guidance for micro site selection of wind turbine, which means that it's necessary to evaluate the influence of the flow around the tower on power output model of WTG. © 2019 IEEE.

关键词： Wind turbines

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Accelerating exploitation and integration of global renewable energy

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Innovation 2025年

作者： Wang, Jianxiao Chen, Xinjiang Zhuang, Minghao Li, Yan Ruan, Ziwen Wang, Yuhan Zhang, Ning Song, Jie He, Kebin Lu, Xi National Engineering Laboratory for Big Data Analysis and Applications Peking University Beijing100871 China Department of Industrial Engineering and Management College of Engineering Peking University Beijing100871 China Peking University Ordos Research Institute of Energy Ordos017000 China State Key Laboratory of Nutrient Use and Management College of Resources and Environmental Sciences China Agricultural University Beijing100193 China College of Environmental Science and Engineering Tongji University Shanghai200092 China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China State Key Lab of Power Systems Department of Electrical Engineering Tsinghua University Beijing100084 China Institute for Carbon Neutrality Tsinghua University Beijing100084 China

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Optimization of active power control strategy for wind farm 8

Optimization of active power control strategy for wind farm

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8th Renewable power Generation Conference, RPG 2019

作者： Fan, Yi Zhang, Jinping Li, Qing Zhang, Mei Wang, Shunlai State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China

ISBN: (纸本)9781839531255

The active power control performance of some wind farms can't fulfil the requirements of grid code completely, such as response time, control accuracy, control mode switching, etc. For that reason, an integrated optimal control strategy for active power of wind farm based on the dynamic grouping and priority control of wind turbines was proposed. Wind turbines in wind farm were divided into 16 subgroups based on the generator speed and the operation status of wind turbine, and the differential control strategy was adopted for different dynamic subgroups, the response time and control precision of the active power control of wind farm was significantly improved. In addition, the flexible switching of four active power control modes of wind farm was realized, including limited mode, free generation mode, frequency modulation mode and emergency control mode. Finally, the active power control strategy of a wind farm was optimized and improved, and the effectiveness of the control strategy was verified by comparative analysis of field test results. © 2019 Institution of Engineering and Technology. All rights reserved.

关键词： Wind turbines

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Performance Ratio Test and Uncertainty Evaluation of Photovoltaic power Generation System based on Linear Regression 5

Performance Ratio Test and Uncertainty Evaluation of Photovo...

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5th IEEE Conference on Energy Internet and Energy System Integration, EI2 2021

作者： Yang, Qingbin Xu, Lianghui Xia, Lie Chen, Zhilei Zhang, Shuangqing Zhou, Rongrong State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Beijing China

ISBN: (纸本)9781665434256

with the development of photovoltaic industry technology, the installed capacity of photovoltaic power generation is increasing, and the evaluation of performance ratio (PR) of photovoltaic power generation system is extremely important. The PR test of photovoltaic power generation system has been studied and defined in domestic and foreign standards early, and test methods have also been given, but these test methods have a strong dependence on the weather conditions during testing, and the uncertainty evaluation is extremely difficult. In this paper, a testing and evaluation method including uncertainty evaluation for PR of photovoltaic system based on linear regression is proposed. This method reduces the dependence on the weather conditions during the whole testing period, and also makes the uncertainty evaluation feasible. Finally, a numerical example proves the rationality of using this method to test the PR of photovoltaic power generation system. Compared with the traditional method, it is shown that this method reduces the sensitivity to the weather conditions in the test, it can truly reflect the performance of the photovoltaic power generation system, and has a higher engineering practice and application value. © 2021 IEEE

关键词： Linear regression

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Comprehensive Evaluation Technology of Photovoltaic power Station power Generation Performance Based on Minimum Deviation Combined Weighting Method 6

Comprehensive Evaluation Technology of Photovoltaic Power St...

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6th IEEE Conference on Energy Internet and Energy System Integration, EI2 2022

作者： Zhang, Jian Xu, Lianghui Xia, Lie Yang, Qingbin Chen, Zhilei Dong, Wei China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems Beijing China

ISBN: (纸本)9798350347159

In order to further optimize resource structure, reduce the energy gap, alleviate environmental pollution and promote the sustainable development of the whole social energy system, the scientific evaluation and decision-making mechanism of photovoltaic power generation projects need to be established, and the comprehensive evaluation system of photovoltaic power station power generation performance need to be improved. This paper focuses on the comprehensive evaluation system and evaluation method of photovoltaic power generation units. Based on the basic principle of multi-objective, multi-criteria, multi-factors and multi-level decision-making, a comprehensive evaluation system suitable for photovoltaic power generation units is proposed, which considers the advantages and disadvantages of objective weight method and subjective weight method. The minimum deviation combined weighting method is used to calculate the combined weight, and then the comprehensive performance evaluation model of photovoltaic power generation unit is established. The comprehensive evaluation results of the new photovoltaic medium voltage power generation unit and the conventional photovoltaic power generation unit are compared and analyzed, so as to prove the superiority of the design index of the former. © 2022 IEEE.

关键词： Sustainable development

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Renewable Energy Accommodation Ability Evaluation of power System with Large-Scale Cascaded Hydro power Plants 6

Renewable Energy Accommodation Ability Evaluation of Power S...

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6th IEEE Conference on Energy Internet and Energy System Integration, EI2 2022

作者： Li, Pai Meng, Na Liu, Siyang Han, Peidong Zhang, Jinping China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems Beijing China

ISBN: (纸本)9798350347159

In this paper, a method on evaluation of annual accommodation ability of high renewable energy penetrated power system with cascaded hydro power plants is proposed. Firstly, an aggregated cascaded hydro power operation model is established and a long-term unit commitment model with cascaded hydro power, thermal, wind and photovoltaic (PV) plants is formulated. The objective of the formulated model is maximizing the power generation of renewable energy, and constraints of load balance, system reserve, and operations of each power plants are considered. Secondly, the hourly power series of renewable energy is incorporated as inputs which contain theoretic power outputs of wind, PV and natural water inflows of each cascaded hydro power plant. Thirdly, a monthly sequential decomposition algorithm is adopted to solve the long-term unit commitment model. Finally, the proposed method is tested on a high renewable energy penetrated power system with large-scale wind, PV and cascaded hydro power. Testing results indicate the effectiveness and applicability of the proposed method. © 2022 IEEE.

关键词： Hydroelectric power plants

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Uncertainty Analysis of Wind power Based on Operating Data 4

Uncertainty Analysis of Wind Power Based on Operating Data

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4th International Conference on Energy, Electrical and power Engineering, CEEPE 2021

作者： Huang, YueHui Li, Pai Sun, YaNan State Key Laboratory of Operation and Control of Renewable Energy Storage Systems China Electric Power Research Institute BeiJing China

ISBN: (纸本)9781665433631

The uncertainty of wind power prediction has a serious impact on the stable operation of power system. In this paper, the actual operation data of 200 wind farms in a certain area of China are collected, and the wind farm stations are divided into different scale station clusters according to the integration location of the grid. The distribution characteristics of wind power prediction error of station clusters are analyzed. Then, based on the prediction error and power correlation characteristics, a clustering segmentation prediction error analysis method is proposed. Finally, the nonparametric kernel density estimation is used to fit the prediction error of station cluster, and the fitting precision evaluation indexes are compared to verify the applicability and effectiveness of the proposed method for the prediction error distribution of station cluster. © 2021 IEEE.

关键词： Uncertainty analysis

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Dual-mode Switching Fault Ride-through control Strategy for Self-synchronous Wind Turbines

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Journal of Modern power systems and Clean Energy 2023年第2期11卷 579-588页

作者： Xinshou Tian Yongning Chi Peng Cheng Wei He Yunpeng Zhou Jianzhu Hu China Institute of Energy and Transportation Integrated Development North China Electric Power UniversityBeijing 102206China State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems China Electric Power Research InstituteBeijing 100192China State Grid Zhejiang Electric Power Co. Economic and Technological Research InstituteHangzhouChina

The installed capacity of renewable energy generation has continued to grow rapidly in recent years along with the global energy transition towards a 100%renewable-based power *** the same time,the grid-connected large-scale renewable energy brings significant challenges to the safe and stable operation of the power system due to the loss of synchronous ***,self-synchronous wind turbines have attracted wide attention from both academia and ***,the understanding of the physical operation mechanisms of self-synchronous wind turbines is not *** particular,the transient characteristics and dynamic processes of wind turbines are fuzzy in the presence of grid ***,it is difficult to design an adaptive fault ride-through(FRT)control ***,a dual-mode switching FRT control strategy for self-synchronous wind turbines is *** FRT control strategies are *** one strategy,the amplitude and phase of the internal potential are directly calculated according to the voltage drop when a minor grid fault *** other dual-mode switching control strategy in the presence of a deep grid fault includes three parts:vector control during the grid fault,fault recovery vector control,and self-synchronous *** proposed control strategy can significantly mitigate transient overvoltage,overcurrent,and multifrequency oscillation,thereby resulting in enhanced transient ***,simulation results are provided to validate the proposed control strategy.

关键词： Dual-mode switching self-synchronous wind turbine transient stability fault ride-through(FRT)control

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