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The Method of Improving the Performance of Network Analysis Application for the Whole power Grid

IOP Conference Series: Earth and Environmental Science 2020年第4期514卷

作者： Ming He Yi Lu Jing Li Guofang Zhang Guo Guo State Grid Sichuan Electric Power Company Chengdu China Beijing Key Laboratory of Research and System Evaluation of Power Dispatching Automation Technology (China Electric Power Research Institute) Beijing China

With the rapid development of UHV AC / DC hybrid power grid, it is required that the Network Analysis Application have the ability of unified analysis and high-performance computing. In this paper, the time-consuming analysis of each sub-function of Network Analysis Application is carried out to realize the performance bottleneck analysis of the whole process of network analysis. It is proposed that the performance of network analysis should be improved in three aspects: data input and output, topology analysis and core computing of Network Analysis Application. In the aspect of data input, the grid model data service is constructed to realize the combination of measurement reading and model reading, and the parallel model verification and boundary equivalence are completed; In the aspect of data output, it can be parallelized by table, block and equipment; In the aspect of topology analysis, the shared memory programming model OpenMP is adopted, and based on the fork/join parallel mode, its parallelization is realized; In the aspect of core computing, the existing parallel computing methods are summarized, and through the actual power grid simulation analysis, it puts forward the parallel computing mode applicable to different scale power grids and different applications. Finally, the effectiveness of this method is verified by comparing the optimized performance of state estimation.

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Chinese Named Entity Recognition in power Domain Based on Bi-LSTM-CRF

Chinese Named Entity Recognition in Power Domain Based on Bi...

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作者： Zhenqiang Zhao Zhenyu Chen Jinbo Liu Yunhao Huang Xingyu Gao Fangchun Di Lixin Li Xiaohui Ji School of Information Engineering China University of Geosciences Beijing Key Laboratory of Research and System Evaluation of Power Dispatching Automation Technology(China Electric Power Research Institute) Big Data Center State Grid Corporation of China Power Dispatching and Control Center State Grid Corporation of China Institute of Microelectronics Chinese Academy of Sciences

Efficient recognition of proprietary entities is an important basic work for text data mining and intelligent application in power *** power domain Named Entity Recognition(NER) methods rely on feature engineering seriously,which unable to learn power entity features *** order to learn entity features automatically and extract power domain named entities efficiently,a model based on Bidirectional Long Short-Term Memory Neural Networks(Bi-LSTM) and Conditional Random Field(CRF) was proposed in this *** representations were fed into the neural networks as an additional feature and Skip-gram embeddings were trained on power domain *** results showed the precision rate reaches higher than 88.25% and the recalling rate reaches higher than 88.04%,which confirm the method based on BiLSTM and CRF is effective for named entity recognition in the power domain.

关键词： Named Entity Recognition power Domain Bi-LSTM CRF

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The application of power grid equipment plug and play based on wide area SOA 2

The application of power grid equipment plug and play based ...

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2nd IEEE International Conference on Energy Internet, ICEI 2018

作者： Chen, Zhenyu Li, Dapeng Deng, Zhaoyun Gao, Xingyu Di, Fangchun Xie, Qiaoyun State Key Laboratory of Power Grid Security and Energy Saving Beijing China Beijing Key Lab of Research and System Evaluation of Power Dispatching Automation Technology Beijing China China Electric Power Research Institute Beijing China State Grid Fujian Electric Power Company Fuzhou Fujian China Institute of Microelectronics Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781538641316

With the new trend for the rapid development of power grid, the scale of equipment accessed to power grid has grown explosively. The information exchange services which need to provide are also complicated. In the future of large-scale power grid, facing with the properties of high efficiency, real-time and security for the information exchange between the power grid equipment and the system, and the satisfaction of wide-area and local communication requirements for the large power grid coverage, it needs to realize the plug-and-play interaction function between the intelligent electric substation and the main station of dispatch and control. We propose the application of power Grid Equipment Plug and Play based on Wide Area SOA, according to wide-area service-oriented architecture design for plug and play power grid equipment, which adopts the service proxy mechanism to manage and control the service domain accessed to the wide area network through the domain management center. Consequently, our proposed based on Wide Area SOA, according to wide-area can obtain the power grid applications' service interaction, and improve the main station's capabilities with the service cooperation among its applications. © 2018 IEEE.

关键词： Information services

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Fault location of secondary equipment in smart substation based on switches and deep neural networks

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IOP Conference Series: Earth and Environmental Science 2020年第1期615卷

作者： Xiaoping Liu Yalei Li Wenzhuo Li Fujia Zhang Jinhu Zhang Ang Li Department of Electric Power Automation Research Beijing Key Laboratory of Research and System Evaluation of Dispatching Automation Technology (China Electric Power Research Institute) Beijing Beijing 100192 China College of Information Science and Engineering Northeastern University Shenyang Liaoning Province 110819 China

With the continuous development of smart substations, the functions of switches have been continuously improved. To improve the efficiency of the operation and maintenance of secondary equipment, this article proposes a fault location method for secondary equipment in smart substations based on switches and deep neural networks. First, the key alarm signal capture function and traffic statistics function are configured on the switch. Secondly, based on alarm information, traffic statistics, and message subscription relationships, the representation of the fault feature information method is proposed. Using the training rules of deep learning, the fault location model of secondary equipment based on deep neural network is established and the fault location steps are given. Taking the line spacing of smart substations as an example, simulations verify the effectiveness of the fault location method, and good location results can still be obtained in an environment with insufficient feature information reliability.

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Construction Pruning for Optimal Control of Process with Deadtime under Extreme High Degree of Control Difficulty 30

Construction Pruning for Optimal Control of Process with Dea...

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30th Chinese Control and Decision Conference, CCDC 2018

作者： Yali, Xue Guobo, Xiang Yuqiong, Zhang State Key Lab of Power System Department of Energy and Power Engineering Tsinghua University Beijing100084 China School of Automation Wuhan University of Technology Wuhan430070 China Chinese Electric Power Research Insitute Beijing100192 China

ISBN: (纸本)9781538612439

The control of process with deadtime has always been a challenging performance specification for industry process control, especially when the degree of control difficulty is high. The control of process with deadtime under extreme high degree of control difficulty is seldom touched up to now. This paper explored the load disturbance rejection control and robustness of this kind of process based on the limitation analysis and construction pruning of twice optimum control. The control simulation and analysis on the control of a first order process with deadtime under the degree of control difficulty of 50 shows that the proposed method has stronger ability of disturbance suppression and stronger robustness when the model parameters have uncertainties compared with the twice optimum control method, the PI controller with Smith Predictor and a kind of Oscillation Reduction Controller with Smith Predictor and ESO. The proposed method had the advantages of simple structure, ease of parameter tuning and good performance on the setpoint tracking, load disturbance rejection and strong robustness. © 2018 IEEE.

关键词： Process control Robustness Load modeling Optimal control Analytical models Tuning

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A Partition Coordinated and Optimized Operation Design for power Grid Wide Area Coordination and Interaction Service

A Partition Coordinated and Optimized Operation Design for P...

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

作者： Zhenyu Chen Dapeng Li Yunhao Huang Fangchun Di Xingyu Gao Jie Zhang Lingxu Guo Beijing Key Lab of Research and System Evaluation of Power Dispatching Automation Technology Beijing China Institute of Microelectronics Chinese Academy of Sciences Beijing China State Grid Tianjin Electric Power Company Tianjin China

The traditional power grid has operated as the regional level way, which has to face with the problems of nonuniform interaction mechanism and non-timely data sharing, then leads that the large-scale power grid can not operate well with global coordinated optimization. According to the objective functions and constraint conditions of large-scale power grid coordinated operation, this paper adopts the wide-area cloud bus technology to coordinate the operation status of each regional power gird. Within each region, our proposed design employs the improved particle swarm optimization (PSO) algorithm combined with simulated annealing idea, to design the problem solution of minimizing the power loss in the region. This design in the paper aims to solve the problems of unified model, optimized operation and data sharing between cross-region and cross-level large-scale power grid, which provides a reference for the dispatching operation level of the whole power grid.

关键词： power grids dispatching Particle swarm optimization Linear programming Simulated annealing

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A Wide Area Service Oriented Architecture Design for Plug and Play of power Grid Equipment

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Procedia Computer Science 2018年 129卷 353-357页

作者： Dapeng Li Zhenyu Chen Zhaoyun Deng Wenying Huang Jihong Tang Fangchun Di Xingyu Gao Qiaoyun Xie Li Liu Xinfan Jiang Beijing Key Laboratory of Research and System Evaluation of Power Dispatching Automation Technology Beijing 100192 China China Electric Power Research Institute Beijing 100192 China State Key Laboratory of Power Grid Security and Energy Saving Beijing 100192 China State Grid Fujian Electric Power Company Fuzhou Fujian 350003 China State Grid Hunan Electric Power Company Changsha Hunan 410007 China Institute of Microelectronics Chinese Academy of Sciences Beijing 100029 China

In this paper, we propose a wide-area service-oriented architecture design for plug and play power grid equipment, which adopts the service proxy mechanism to manage and control the service domain accessed to the wide area network through the domain management center. Accordingly, the service management center controls the service registration, the targeting (discovery) and the service information in the service domain. It also provides the functions of maintenance-free access and communication, service object management, service subscription and distribution between service providers and service consumers in wide-area interactions. Subsequently, our proposed architecture is able to achieve the servitization interaction of power grid applications, and enhance the level of information sharing and the capacity of business collaboration between the main station of dispatch and control and intelligent electric substation. It also can provide the practical guidance for automatic access of substation equipment, the function improvement of the main control station and the service transformation of its applications.

关键词： Wide-area Service Oriented Architecture (WSOA) power grid equipment plug play

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Model Management and Service Based power Grid Multi -Agent Dispatcher Training Simulator

Model Management and Service Based Power Grid Multi -Agent D...

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

作者： Xiaolin Qi Zhenyu Chen Dapeng Li Zhihong Li Yunhao Huang Yifei Yang Linpeng Zhang Xingyu Gao Liyue Chen Zhengping Chen Beijing Key Lab of Research and System Evaluation of Power Dispatching Automation Technology Beijing China State Key Laboratory of Power Grid Security and Energy Saving Beijing China State Grid Beijing Electric Power Company Beijing China Institute of Microelectronics Chinese Academy of Sciences Beijing China State Grid Zhejiang Electric Power Company Hangzhou Zhejiang China State Grid Fujian Electric Power Company Fuzhou Fujian China

The joint anti-accident exercises in multi-level dispatching and control systems using dispatcher training simulator (DTS)are distributed interactive simulation. It has many problems, such as wide cross domain, tedious training preparation, and complex communication etc. Based on model management service, DTS of multi-level and multi-area becomes reality. It is an effective way to study the distributed complex system such as DTS based on multi-agent theory. In this paper, the application of agent in DTS is divided into three stages. The first stage is part-role agent. The second stage is whole-roles agent. The last stage is functional-module agent. This paper puts forwards the simulation model of agent in three stages. The purpose is achieving two kinds of conversion, one is transforming dispatcher training into agent training, the other is transforming dispatcher from being evaluated into a decision maker. The new DTS with agent technology is verified feasibly and effectively comparing with the traditional DTS system.

关键词： Training dispatching Monitoring power grids Control systems Data models

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Rotor position measurement method for generator power angles

Rotor position measurement method for generator power angles

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2011 International Conference on Advanced power system automation and Protection, APAP 2011

作者： Zhou, Jie Zhang, DaoNong Yu, YueHai Wu, JingTao Zhou, Ji Bi, TianShu Xiong, Ming NARI Technology Development Co. Ltd. Nanjing 210061 China North China Power Engineering Co. Ltd. Beijing 100120 China State Grid Electric Power Research Institute of China Nanjing 210061 China Beijing Sifang Automation Co. Ltd. Beijing 100085 China National Power Dispatch Communications Center Beijing 100031 China State Key Lab. for Alternate Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China China Electric Power Research Institute Beijing 100085 China

ISBN: (纸本)9781424496198

In traditional engineering applications, the internal voltage and power angle of generators are often measured by the electrical calculation method. The internal voltage and power angle of generators are calculated by direct-axis reactance Xd, quadrature-axis reactance Xq, terminal voltage and current which measured real-time. This calculation method may result in deviation because the value of Xd and Xq may be changed when the generator running in different status. This paper proposes a kind of rotor position measurement method. The internal voltage and power angle of generators are gotten by using generator phase keying signal and terminal voltages. This method is independent of generator equivalent calculative models and the value of synchronous reactance. It has high accuracy and suitable for real-time power angle measurement when power grid is in a disturbing or transient processing. © 2011 IEEE.

关键词： Electric generators

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Rotor position measurement method for generator power angles

Rotor position measurement method for generator power angles

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International Conference on Advanced power system automation and Protection (APAP)

作者： Jie Zhou DaoNong Zhang YueHai Yu JingTao Wu Ji Zhou TianShu Bi Ming Xiong NARI Technology Development Co. Ltd. Nanjing 210061 China North China Power Engineering Co. Ltd. Beijing 100120 China State Grid Electric Power Research Institute of China Nanjing 210061 China Beijing Sifang Automation Co. Ltd. 100085 China National power dispatch communications center Beijing 100031 China The State Key Lab for Alternate Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China China Electric Power Research Institute Beijing 100085 China

关键词： Rotors Phasor measurement units Voltage measurement Current measurement power measurement Turbines

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