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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Shanhua Hu Yalou Li Xing Zhang Qing Mu Linlin Ma Weiwei Miao State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China Dispatch Control Center Control Office State Grid Shandong Electric Power Company Beijing China

With the increasing integration of a significant number of Inverter-Based Distributed Generators (IBDGs), the transient characteristics on the low-voltage distribution network side have undergone substantial changes, rendering traditional stage division standards less applicable. This paper proposes a novel stage division standard for the transient response in Active Distribution Networks (ADNs), serving as a crucial tool for a more profound analysis of the interactions between ADNs and the transmission network. The paper begins by developing an electromagnetic model using a real ADN then performs large disturbance simulations for ADNs at different penetration levels, and introduces a new segmentation criterion based on the external characteristics of ADNs under large disturbances. By formulating mathematical models for the components within the ADN during transient stages, this paper delves into a mechanistic analysis of the external characteristics of ADNs at each phase and identifies key factors influencing the external characteristics in various stages.

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Hybrid MMC AC Side Smooth Start-Up Strategy

Hybrid MMC AC Side Smooth Start-Up Strategy

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Zhou Xin Mu Qing Li Yalou Chen Jing Ma Linlin Miao Weiwei State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China Dispatch Control Center Control Office State Grid Shandong Electric Power Company Shandong China

Modular multilevel converters are currently the mainstream topology in flexible HVDC projects. Compared with half-bridge MMC, hybrid MMC has DC fault ride through capability, and has economic cost advantages over full-bridge MMC and has broad application scenarios. At present, the main problem of hybrid MMC is that it is difficult to start smoothly, and it is difficult for the full-bridge sub-module and half-bridge sub-module to achieve capacitor voltage balance during the AC side start-up process, and the converter is easy to generate inrush current when unlocked, threatening the system safety. In order to solve the above problems, a three-stage AC start-up scheme is proposed, which can ensure that the half-bridge submodule and the full-bridge submodule can reach the self-absorbed energy voltage during the charging process, and the proposed dynamic grouping and sorting algorithm can improve the calculation efficiency of the traditional sorting algorithm and accelerate the capacitor-voltage balance process. The proposed method is verified by ADPSS, an electromagnetic transient simulation platform independently developed by China Electric power Research Institute.

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Impedance Modeling and Characteristics Analysis of Grid-Forming Converter

Impedance Modeling and Characteristics Analysis of Grid-Form...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Huifang Liu Yu Lei Guoqing He Keke Liu Liping Gao Junhua Ma State Key Laboratory of Operation and Control of Renewable Energy &Storage Systems China Electrical Power Research Institude School of Information Engineering China University of Geosciences Beijing China State Key Laboratory of Operation and Control of Renewable Energy &Storage Systems China Electrical Power Research Institute Beijing China

Grid-forming control (GFM) has been widely applied in academia and industry for its contribution to the stability in weak grid. As GFM has multiple control loops that interact with each other, the dominant factor of impedance characteristics in different frequency bands is still unknown. At the same time, the impact of dynamic response requirements such as bandwidth and phase margin (PM) of each control loop on GFM impedance characteristics in different frequency bands is still unclear. This article first establishes an impedance model of GFM and analyzes the transmission path of small signals in GFM. Then, based on the small signal transmission relationship, the GFM impedance is divided into two parts. One part is dominated by the synchronization loop, and the other part is dominated by the voltage and current loops. Based on this, the influence of each control loop on GFM impedance characteristics is analyzed. Finally, based on the control hardware in the loop simulation platform, experiments were conducted, verifying the correctness of the analysis in this paper.

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Active Dynamic Aggregation Model for Distributed Integrated Energy System as Virtual power Plant

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Journal of Modern power systems and Clean Energy 2020年第5期8卷 831-840页

作者： Haotian Zhao Bin Wang Xuanyuan Wang Zhaoguang Pan Hongbin Sun Zhen Liu Qinglai Guo State Key Laboratory of Control and Simulation of Power System and Generation Equipments Department of Electrical EngineeringTsinghua UniversityBeijingChina State Grid Jibei Electric Power Co. Ltd.BeijingChina

Distributed integrated multi-energy systems(DIMSs)can be regarded as virtual power plants to provide additional flexibility to the power *** paper proposes a robust active dynamic aggregation model for the DIMSs to describe the maximum feasible *** aggregation model includes the power constraints,energy constraints,and ramping constraints to aggregate different types of resources in the *** proposed generator-like and storage-like model does not depend on the ancillary service market and can be directly incorporated into the economic dispatch model of the power system.A novel algorithm based on the column-and-constraint generation algorithm and convex-concave procedure is proposed to solve the two-stage robust optimization problem,which is more efficient than the KKT-based ***,a case study of an actual DIMS is developed to demonstrate the effectiveness of the proposed model.

关键词： Aggregation distributed integrated energy system(DIMS) robust optimization virtual power plant

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Research And Implementation Of Real-Time Accurate simulation Platform For Large-Scale Stability control System 5

Research And Implementation Of Real-Time Accurate Simulation...

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

作者： Zhu, Yihua Chang, Dongxu Guo, Qi Guo, Hengdao Hu, Binjiang Wu, Mingkang Zhu, Yukun Yu, Duo State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation Control for New Energy Power System Guangzhou China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9781665434256

Based on the design characteristics of the stability control system, the control strategies of each station in the system are abstracted and integrated, and classified into standardized logic and customized logic. Based on the real-time digital simulation system platform, a three-layer architecture of the real-time simulation platform for the large-scale stability control system is designed. The standardized simulator based on FPGA/DSP and the customized simulator using device virtualization technology are designed in detail. The design scheme of the real-time accurate simulation platform for large-scale stability control system is proposed. From the perspective of hardware requirements, simulation accuracy, and platform adaptability, the differences between the simulation platform and the existing real-time digital simulation test platform are compared and analyzed. © 2021 IEEE

关键词： simulation platform

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Validation Method of Coordinated Operation Strategy for Integrated Source-Network-Load-Storage Projects in power systems

Validation Method of Coordinated Operation Strategy for Inte...

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IEEE PES Asia-Pacific power and Energy Engineering Conference (APPEEC)

作者： Yanzhang Liu Fei Wang Minhui Qian Yalu Sun Kun Ding Bingbin Fu State Key Laboratory of Operation and Control of Renewable Energy &Storage Systems China Electric Power Research Institute Beijing China Economic and Technological Research Institute of State Grid Gansu Electric Power Company Lanzhou China

ISBN: (数字)9798350386127

ISBN: (纸本)9798350386134

With the increase of various elements in the source-network-load-storage projects and changes in the power system structure, its operating characteristics will become very complex. it requires continuous optimization of scheduling and operation control strategies to meet the production needs of the projects. Due to the significant differences in operational characteristics of different types of regulation resources in the projects at different time scales, it poses a challenge to formulating operational control strategies and verifying their effectiveness. This paper investigates a method for verifying the operation strategy of the projects based on power systems real-time simulation technology, providing technical support for in-depth research on the operation and control strategies of complex multi-source systems. The frequency response and power coordination control strategy have been verified through examples, which has certain engineering guidance for the operation of the integrated project.

关键词： Renewable energy sources Protocols Production Real-time systems Frequency response Regulation power grids Mathematical models IEC Standards Optimization

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Generation method of anti-misoperation locking logic rules for substations based on typical wiring

Generation method of anti-misoperation locking logic rules f...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Jingxiang Zhang Hui Zou Hewei Hou Junhui Li Rongrong Ji Kaiyuan Duan Cuiping Li Xingxu Zhu Extra-High Voltage Branch Company of State Grid Zhejiang Electric Power Co. Ltd Hangzhou China Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education Northeast Electric Power University Jilin China

ISBN: (数字)9798331523527

ISBN: (纸本)9798331523534

At present, substations usually use electrical blocking facilities to achieve the function of anti-fault blocking, but new stations and new reconstruction and expansion stations have the problem of low efficiency in the compilation and review of anti-fault blocking logic rules, and also need a lot of manual debugging and checking time. In this paper, based on the typical substation wiring and anti-false blocking logic rules, the typical substation wiring library and the corresponding blocking logic library are constructed; then, the graphic editing module and graphic analysis module are constructed by combining the substation modelling method with the topology and other technologies. Finally, the automatic generation of anti-error latching logic rules is realised, which solves the problems of low efficiency and lack of reliability in the writing and checking of the corresponding substation anti-misoperation locking logic rules.

关键词： Wiring Graphics Substations Reviews Debugging System integration Libraries Topology Logic Reliability

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Short-term power Prediction of Wind power Cluster Based on KOA-PLE

Short-term Power Prediction of Wind Power Cluster Based on K...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Nan Wu Mao Yang Chenglian Ma Yunpeng Jia Guozhong Fang Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education (Northeast Electric Power University) Jilin China Jilin Power Supply Company of State Grid Jilin Electric Power Co. Ltd Jilin China State Gird Northeast China Branch Jilin China

ISBN: (数字)9798331523527

ISBN: (纸本)9798331523534

With the gradual acceleration of the world's energy transformation, the construction of new energy is becoming more and more large-scale. At the same time, the proportion of new energy in the power grid is increasing, and the high volatility of wind power poses certain challenges to the stability and reliability of the power system. Therefore, accurate large-scale wind power prediction is very necessary. This paper presents a multi-task learning predicting method for wind power clusters. Firstly, the wind power cluster is divided into subgroups with similar output characteristics, and then the different subgroup power is used to predict the multi-task targets. Meanwhile, the Kepler optimization algorithm (KOA) is used to optimize the model parameters. When the method is applied to a wind power cluster in China, RMSE and MAE are reduced by 2.07% and 1.92% compared with the traditional multi-task learning method, which proves the effectiveness of the proposed method.

关键词： Learning systems Clustering algorithms System integration Wind power generation power system stability Multitasking Prediction algorithms Stability analysis Reliability Optimization

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Coordinated Optimal Configuration Method of Wind power Load Shedding Rate and Energy Storage Aiming at Active Frequency Support

Coordinated Optimal Configuration Method of Wind Power Load ...

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China International Electrical and Energy Conference (CIEEC)

作者： Xiuyu Yang Jian Peng Yuxuan Liu Gang Miu Guochao Zhang Zhengyin Zhu Key Laboratory of Modern Power System Simulation Control and New Green Energy Technology of Ministry of Education Northeast Electric Power University Jilin China State Grid Xinjiang Power Supply Company State Grid Urumqi Power Supply Company Urumqi City China State Grid Jilin Power Supply Company State Grid Jilin Power Supply Company Jilin China

ISBN: (数字)9798350359558

ISBN: (纸本)9798350359565

With the increase of renewable energy, the system frequency modulation ability is insufficient, and the relevant departments require that renewable energy should have the active support ability of power system frequency change. Long-term active load shedding to achieve frequency support will cause power generation loss and economic damage; if the maximum output of the wind turbine is taken as the active support task by the energy storage, the amount of energy storage required is large. Therefore, this paper proposes a coordinated optimal allocation method of wind power load shedding rate and energy storage capacity with the goal of frequency active support. From the economic point of view, the optimal allocation relationship between wind power load shedding rate and energy storage capacity allocation is analyzed to find the optimal setting of load shedding rate and energy storage capacity.

关键词： Renewable energy sources Frequency modulation Costs Wind energy Load shedding Wind power generation Wind turbines

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Performance-Aware control of Modular Batteries For Fast Frequency Response

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IEEE Transactions on Sustainable Energy 2025年

作者： He, Yutong Ruan, Guangchun Zhong, Haiwang Tsinghua University State Key Laboratory of Power System Operation and Control Department of Electrical Engineering Beijing100084 China Massachusetts Institute of Technology Lab for Information and Decision Systems CambridgeMA02139 United States

Modular batteries can be aggregated to deliver frequency regulation services for power grids. Although utilizing the idle capacity of battery modules is financially attractive, it remains challenging to consider the heterogeneous module-level characteristics such as dynamic operational efficiencies and battery degradation. In addition, real-time decision making within seconds is required to enable fast frequency response. In order to address these issues, this paper proposes a performance-aware scheduling approach for battery modules to deliver fast frequency response (FFR) support. In particular, the conduction loss and switching loss of battery packs as well as converters are captured within a mix-integer quadratic constrained program (MIQCP). The cycle-based aging model identifies the aging cost of battery modules during frequent cycling by introducing the aging subgradient calculation and linearization. Case studies based on real-world battery data show that the proposed scheduling approach can effectively reduce power loss cost by nearly 28%-57% and battery aging cost by 4%-15% compared to conventional methods, which can also enhance the SoC balance. © 2010-2012 IEEE.

关键词： Battery management systems

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