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检索条件"机构=State Key Laboratory of Control and Simulation of Power Systems"

共 2147 条记录，以下是381-390 订阅

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Optimal Scheduling of Pumped Storage power Station with Double-Fed Variable Speed Unit Based on Reservoir Regional Operation Strategy

Optimal Scheduling of Pumped Storage Power Station with Doub...

引用

Communications Technology and Computer Science (ACCTCS), Asia-Pacific Conference on

作者： Yuhan Ma Yining An Xiaohui Ge Bo Zhao State Grid Zhejiang Electric Power Co. Ltd. Research Institute Hangzhou Zhejiang China Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Northeast Electric Power University Jilin Jilin China

ISBN: (数字)9798350359985

ISBN: (纸本)9798350359992

The conventional pumping unit lacks the ability to continuously adjust input power during pumping operations, and exhibits poor adaptability when integrating new energy sources into the grid. In this study, we propose a novel “domain operation” strategy that allocates resources based on real-time reservoir conditions across all levels of hydropower stations, while optimizing operations through the implementation of doubly fed units.

关键词： Computer science Fluctuations Costs Hydroelectric power generation Optimal scheduling Wind power generation Reservoirs

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Capacitor Voltage Balancing Strategy Based on Zero-Sequence Voltage Injection for Half-Wave Commutated Modular Multilevel Converter

Capacitor Voltage Balancing Strategy Based on Zero-Sequence ...

引用

International Conference on power Electronics and Motion control (IPEMC)

作者： Nan Fu Bao Liu Yunfei Xu Sitong Zhu Kui Wang Yongdong Li Department of Electrical Engineering State Key Laboratory of Control and Simulation of Power System and Generation Equipment Tsinghua University Beijing China State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd Changping Beijing China Electric Power Research Institute of State Grid Liaoning Electric Power Co. Ltd. Shenyang China

ISBN: (数字)9798350351330

ISBN: (纸本)9798350351347

Half-wave commutated modular multilevel converter (HWC-MMC) is suitable for high-voltage large-capacity AC-AC conversion, and an appropriate capacitor voltage balancing strategy is essential. This paper analyzes the condition of capacitor voltage balancing and proposes a capacitor voltage balancing strategy based on optimal zero-sequence voltage injection using the model predictive control. Finally, the simulation is carried out to verify the proposed strategy.

关键词： Multilevel converters Voltage fluctuations Capacitors High-voltage techniques power system harmonics power electronics Steady-state

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Designing and Implementing Communication-efficient Model of Distributed System for Real-time Electromagnetic Transient simulation

Designing and Implementing Communication-efficient Model of ...

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IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Qi Guo Binjiang Hu Zeqi Hong Yanjun Zhao Shuyong Li Liang Tu State Key Laboratory of HVDC Electric Power Research Institute China Southern Power Grid Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power Grid China Southern Power Grid Co. Ltd

ISBN: (数字)9798350381993

ISBN: (纸本)9798350382006

This paper introduces CM-RETS, a 4-Level address Communication Model designed specifically for real-time simulation of electromagnetic transients in power systems. CM-RETS incorporates a unique 4-Level address scheme and leverages Remote Direct Memory Access (RDMA) technology to enable efficient and reliable data exchanges between computing nodes in a distributed system. By effectively distributing computational load, CM-RETS facilitates faster and more realistic simulations, ensuring precise and timely data exchanges within a 5μs time step to capture transients in real time. Experimental results validate the effectiveness and efficiency of CM-RETS in achieving accurate and real-time simulations of electromagnetic transients. With its robust and cost-effective solution, CM-RETS provides researchers and engineers with the means to perform detailed analysis and studies on power systems under various transient conditions.

关键词： Computational modeling Memory management Real-time systems Data models power system reliability Reliability Security

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Cause Identification of Single-line-to-ground Fault in Distribution System

Cause Identification of Single-line-to-ground Fault in Distr...

引用

2021 International Conference on power System Technology, powerCON 2021

作者： Liu, Kun Ren, Xuan Wang, Bin Power Dispatch Control Center of Guangdong Power Grid Co. Ltd Key Lab for Protective Relaying Real Time Digital Simulation of Guangdong Power Grid Co. Ltd. Guangzhou China Tsinghua University Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electric Engineering Beijing China

ISBN: (纸本)9781665407373

Cause identification of single-line-to-ground fault in the distribution system is of great significance to the electric workers for fault isolation and rapid maintenance. The key of fault cause identification is to accurately and quickly distinguish human electric shock faults from non-biological faults. In this paper, human electric shock faults and non-biological faults are modeled and fault characteristics are analyzed. Based on the differences between shape and rotation characteristic of the volt-ampere characteristic curves, a fault cause identification method which can distinguish human electric shock faults from non-biological faults is proposed. simulations show the effectiveness of the method. © 2021 IEEE.

关键词： Electric grounding

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Joint forecasting of regional wind and solar power based on attention neural network 5

Joint forecasting of regional wind and solar power based on ...

引用

5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Zhang, Yongrui Yan, Jie Han, Shuang Liu, Yongqian Song, Zongpeng North China Electric Power University School of New Energy Beijing China Renewable Energy Center China Electric Power Research Institute State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems Beijing China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

In the future high proportion of renewable energy grid-connected scenario, a large number of centrally developed wind farms and photovoltaic power stations will be integrated into the power system. There is a certain spatial and temporal correlation between wind and solar resources, which can provide additional information to help improve the power prediction accuracy. However, most of the existing wind and solar power prediction methods are focus on a single energy form, a single station or a single unit, which cannot fully and effectively reflect the space-time correlation between wind and solar resources. In addition, a single-field power prediction is no longer well enough to meet the needs of grid dispatching agencies. On the one hand, the power system as a whole, the dispatchers are more concerned about the total amount of uncertainty in the wind and solar power prediction;on the other hand, in order to make reasonable dispatch to the grid and avoid some off-grid events, the cluster power prediction is needed. Therefore, this paper proposes a joint forecasting method of regional wind and solar power. With NWP wind speed, irradiance and temperature data of several wind farms and photovoltaic power stations as input and measured power data as prediction target, based on the attention neural network algorithm, constructs a joint forecasting model which can reflect the spatial-temporal correlation of regional wind and solar resources. The proposed method is verified with the data of 8 wind farms and 7 photovoltaic power stations. The analysis results show that the proposed model can not only improve the power prediction accuracy, but also obtain the power prediction results of each target stations at the same time, which reduces the workload and has certain engineering application value. © 2022 IEEE.

关键词： Wind farm

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Capacity Coordinated Optimization of Battery, Thermal and Hydrogen Storage System for Multi-Energy Complementary power System

Capacity Coordinated Optimization of Battery, Thermal and Hy...

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China International Electrical and Energy Conference (CIEEC)

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

For a multi-energy complementary power system containing wind power, photovoltaic, concentrating solar power and electric/thermal/hydrogen multi-type energy storage, the coordinated and optimal allocation of the capacity of various types of energy storage devices is important to improve the system operation economy and cleanliness. A coordinated and optimal allocation method of electric/thermal/hydrogen energy storage capacity for multi-energy complementary power system based on time-series production simulation is proposed. An electric/thermal/hydrogen storage capacity optimization model is established with the objective of maximizing the system's combined annual value gain and considering the system energy outgoing, renewable energy utilization rate and the operating constraints of various power sources and storage systems. Finally, based on the idea of time-series production simulation, the optimal configuration capacity of electric/thermal/hydrogen energy storage that takes into account economic, safety and cleanliness constraints is obtained by optimal solution with the theoretical output of 8760h of scenery for the whole year as input. The example is validated based on a multi-energy complementary power system in northwest China, and the impact of system operation mode, operation strategy, cost and tariff on the capacity allocation results is quantified and analyzed to verify the effectiveness of the method.

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A Short-Term Wind power Forecasting Method Based on High-Level Meteorological Data 1

引用

6th PURPLE MOUNTAIN FORUM on Smart Grid Protection and control, PMF2021

作者： Ma, Wenwen Cheng, Xu Wu, Ji Zhou, Hai Fan, Rui Renewable Energy Department China Electric Power Research Institute Ltd Nanjing China State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems Beijing China Shanxi Electric Power Research Institute Shanxi China

ISBN: (数字)9789811671562

ISBN: (纸本)9789811671555

Compared with the surface meteorological data, the high-altitude meteorological data is less affected by the surface environment. A short-term power prediction method for wind power based on high-level meteorological data is proposed. Firstly, a new idea of feature selection is proposed, which is reduced dimensionality by recursive feature elimination method and combined with greedy search algorithm. Secondly, a random forest model combined with Savitzky-Golay filter is established to correct the wind speed at the top of the wind turbine, and then the wind speed is converted into predicted power. Finally, an experiment is carried out with the high-level meteorological data and surface data generated by NWP of a wind farm, and the prediction accuracy is calculated with the local power assessment standard. It is proved that compared with the surface meteorological data, the high-level meteorological data converted by the proposed method has a better prediction precision. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Decision trees

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Optimal Allocation of Energy Storage Resources for New Energy Accommodation

Optimal Allocation of Energy Storage Resources for New Energ...

引用

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

作者： Xiangyan Wang Ning Chen Lei Zhang State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Nanjing China

To promote low-carbon power system development, our country is increasing new energy grid integration. However, the uncertainty of new energy output brings significant pressure to the stable operation of the power grid, where the large-scale accommodation of new energy has always been a global challenge. As an important pillar of the stability of the new power system, energy storage systems can flexibly adjust power supply and effectively alleviate the impact of new energy output fluctuations on the power grid. In response to this, this paper proposes an optimal allocation method for energy storage resources aimed at absorbing new energy, first establishing the multi-period energy-storage system integrated direct current optimal power flow model, then considering the demand for new energy accommodation in multiple scenarios, it embeds the constraints of new energy accommodation into the aforementioned model. The case study compares the results of energy storage allocation under different new energy accommodation demands, demonstrating the rationality and effectiveness of the method proposed in this paper.

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Review on Modeling Technology of Energy Storage Converters for New Energy Generation

Review on Modeling Technology of Energy Storage Converters f...

引用

Advanced Electrical and Energy systems (AEES), International Conference on

作者： Li Xiangjun Zhang Tianyu Li Hanning Niu Meng State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China

With a large proportion of new energy penetration into the power grid, due to the power generation characteristics of new energy, resulting in the stability of the power grid, it is urgent to solve this problem. This paper describes and explains the structure, working principle and control method of the grid type energy storage converter and the grid type energy storage converter for new energy generation, and analyzes the control model establishment and control strategy optimization of the two at home and abroad. Compare the advantages and disadvantages of grid following energy storage converters and grid forming energy storage converters, and the hybrid energy storage converter is proposed. A simple model is established using PSD-BPA to analyze the advantages of the hybrid energy storage converter and the role played by the grid type and the grid type converter. The future development direction of the energy storage converter is pointed out.

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The Optimal Design of the Second-Order Generalized Integrator Phase-Locked Loop Under power Voltage Distortion Conditions 5

The Optimal Design of the Second-Order Generalized Integrato...

引用

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

作者： Zhang, Xin Gong, Lijiao Wang, Bin Si, Jindong College of Mechanical and Electrical Engineering Shihezi University Shihezi China Shihezi China State Key Laboratory of Safety Control and Simulation of Power Systems and Power Generation Equipment Department of Electrical Engineering Tsinghua University Beijing China

ISBN: (纸本)9781665434256

Phase-locked loop (PLL) based on traditional second-order generalized integrator (SOGI) cannot obtain the voltage, frequency and phase information accurately when there are multiple harmonic interference and DC offset in grid voltage. To solve this problem, this paper proposes an improved PLL that can suppress harmonic and eliminate DC component to extract the synchronous signal accurately. First of all, based on the derivation of distorted grid voltage expression, the problem offluctuation in extracting synchronous signal from three-phase unbalanced voltage with harmonic by traditional PLL is analyzed. Then, the design of improved PLL is proposed, which is composed of an improved second-order generalized integrator and a frequency correction component which can suppress harmonics and eliminate disturbances under the condition of grid voltage distortion, and has self-adaptability in large frequency offset. Determine the control parameters to ensure that the proposed PLL structure has a better rejection to harmonic distortion than previous approaches, and realize accurate tracking of grid fundamental frequency synchronization information. Finally, the behavior of the proposed system is verified with MATLAB/Simulink simulation and Hardware-in-Loop Experimental Platform which prove the proposed PLL can realize the synchronous tracking performance of grid frequency and phase quickly and accurately in the non-ideal grid environment, and the results are consistent with the theoretical analysis. © 2021 IEEE

关键词： Phase locked loops

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