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A Deep Learning Based Real-time Load Forecasting Method in Electricity Spot Market

Journal of Physics: Conference Series 2019年第6期1176卷

作者： Qipei Zhang Jixiang Lu Zhihong Yang Mengfu Tu Nari technology co ltd. Nanjing 211106 China State Key Laboratory of Intelligent power grid protection and operation control Nanjing 211106 China

This paper analyzes the potential influence in Chinese electricity market due to the reform and access of the electricity spot market. On this occasion, a deep learning based model for load forecasting is proposed to improve the market operator's precise scheduling level and assist power retailers in managing bid strategies. Long-Short Term Memory (LSTM) unit is used to modeling, which is one of the most popular techniques of deep learning. In addition, historical power load data and meteorological data of Suzhou and Lianyungang in China from January 2015 to December 2017 are used for the study to training and evaluate forecasting model. As a result, this paper shows the compare results with exiting machine algorithm for load forecasting.

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A Frequency control Model for Cyber Physical Power System Considering Demand Response Strategy

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Energy Procedia 2018年 145卷 38-43页

作者： Ni Ming Chen Qian Li Manli Wang Qi Tang Yi NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing 211106 China NARI Technology Co. Ltd. Nanjing 211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing 211106 School of Electrical Engineering Southeast University Nanjing 210096 China

Due to the increase of power transmission capacity, once an active power vacancy happens, power systems will face a serious frequency instability problem. With the development of communication technology in cyber physical power system (CPPS), demand response (DR) resources can take the initiative to reduce electricity utilization in order to tackle the system under-frequency challenge. This paper presented a frequency control model for CPPS considering DR strategy to rapidly forecast the effects of DR sources participating in frequency control. The model was verified through a case study as well.

关键词： load frequency control(LFC) cyber physical power system demand response

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Research and Application of Trans-Regional Cooperative Disposal of UHV Interconnected Power grid 3

Research and Application of Trans-Regional Cooperative Dispo...

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2017 3rd IEEE International Conference on control Science and Systems Engineering (ICCSSE)

作者： Shan Xin Jiang Yefeng Wu Li Jin Yiding Wang Yiyu Lu Jinjun NARI Group Corporation NARI Technology Co.Ltd State Key Laboratory of Smart Gird Protection and Control Jiangsu Electric Power Company of State Grid of China National Electric Power Dispatching and Control Center State Grid Corporation of China

ISBN: (纸本)9781538604854

With the rapid construction of UHV AC/DC power grid, the integration characteristics of power grid are becoming more and more prominent, and real-time operation control of dispatching is significantly becoming more and more difficult. The existing monitoring and control model based on the system model data cannot meet the requirements for the development of UHV power grid. Based on the existing achievements of dispatching automation system, the general goal and framework of the trans-regional cooperative disposal of UHV interconnected power grid are put forward, and the key technologies are analyzed in four aspects: situation awareness, fault location, joint disposal and cooperative control to provide reference and example for follow-up construction for real-time control and support system for the dispatching of UHV power grid.

关键词： UHV situation awareness cooperative disposal source grid load wide area graphic browsing DC fault diagnosis

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Status evaluation of smart substation measurement and control device

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IOP Conference Series: Materials Science and Engineering 2019年第4期563卷

作者： Zhang Min Shen Jian Chen Li Zhou Bin Zhou Shao Liang Hou Zhe NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing China State Key Laboratory of Smart Grid Protection and Control Nanjing China NARI Technology Corporation Co. Ltd Nanjing China

In power system, measurement and control device plays an important role in maintaining an ideal level of reliability. Therefore, the reliability of the measurement and control device should be evaluated to fully understand the cause of its failure. A new evaluation model is proposed, which relates the fault of measurement and control system with the four main reasons of device hardware fault, software fault, auxiliary equipment fault and human fault. In addition, the model can also comprehensively consider other aspects of the measurement and control system, such as human error in testing and software upgrade, effectiveness of daily operation monitoring, degree of dependence on self-inspection, local backup and misoperation. These studies have a lot of significance to the reliability of the control system, and also can effectively improve the stability of the system.

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Online Identification of Transient Stability and Unstable Generators Based on Deep Learning

Online Identification of Transient Stability and Unstable Ge...

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

作者： Yanzhen Zhou Qiang Liu Qinglai Guo Hongbin Sun Xianyu Zha Feng Xue Wenlu Zhao Chen Li Zhijian Zhang Liangliang Hao Department of Electrical Engineering Tsinghua University Beijing China State Key Laboratory of Smart Grid Protection and Control State Grid Electric Power Research Institute Jiangsu China State Grid Xinyuan Maintenance Branch State Grid Xinyuan Company Ltd. Beijing China State Grid Beijing Electric Power Dispatching and Control Center Beijing China School of Electrical Engineering Beijing Jiaotong University Beijing China

Machine learning methods have been considered as a promising method for online transient stability analysis. This paper presents a deep learning approach for transient stability prediction and unstable generator identification based on convolutional neural networks (CNNs). The post-disturbance dynamic responses of all the generators are utilized as the input features. A binary classification CNN model is generated for transient stability prediction. And a multi-class classification CNN model is built for unstable generator identification. Moreover, the multi-class CNN model can provide the unstable probability of each generator using the probability outputs and the label information. Comprehensive studies are conducted on the New England 10-machine 39-bus system to verify the effectiveness of the proposed approach.

关键词： Generators Power system stability Stability analysis Transient analysis Predictive models Thermal stability

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Design and Implementation of Integrated Service Penetration Technology Cross Security Region

Design and Implementation of Integrated Service Penetration ...

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

作者： Qiang Yi Shupeng Wan Kai Zhang Peng Chen Hailong Guo Baoshan Gao System R&D Center NARI Group Corporation NARI Technology Co. Ltd Nanjing China System R&D Center State Key Laboratory of Smart Grid Protection and Control Nanjing China

In the power dispatching automation system, production control security region and management information security region adopt forward and backward isolation devices for physical isolation, with the enhancement of the functional relevance between the security regions and the expansion of the system functions, one-way synchronization of production control security region to management information security region has been unable to meet the requirements of application expansion of supervisory control. In accordance with the principles of safety protection standards, it is urgent to establish a data transmission mechanism that can cross the forward and backward isolation, realize service penetration cross the security region. In this paper, a scheme of integrated service invocation across the security region is proposed, which can be invoked by the service bus that can be transparent and unaware service bus, encapsulate cross domain service protocol, establish virtual access, and complete service invocation. Through the signature verification technology, the service message is tampered in the communication, the communication security of the service invocation is guaranteed, the rights of the service are obtained through the authorization and the security of the service invocation cross the security region. The integrated service invocation technology cross the security region has been applied in Jiangsu Province, Beijing and Hangzhou. It provides a safe and stable support for the construction of the grand operation system, and provides a powerful guarantee for the efficient operation of the power grid.

关键词： Security Production control Power systems Safety Servers Synchronization Dispatching

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A novel linear correlation clustering method for stochastic power flow studies

A novel linear correlation clustering method for stochastic ...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Luo, Kui Lin, Chaofan Liu, Shiyu Bie, Zhaohong Shi, Wenhui Qu, Jixian State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing100192 China State Key Laboratory of Electrical Insulation and Power Equipment Shaanxi Province Key Laboratory of Smart Grid xi'An Jiaotong University Xi'an Shaanxi710049 China

ISBN: (纸本)9781538614273

Nowadays as quantities of renewable energy resources are integrated to the power grid, their fluctuation and uncertainties influence violently to power system operation. Stochastic power flow is utilized to handle this issue. However, conventional stochastic power flow did not consider correlation in renewable energies, especially wind farms, leading to errors in power flow analysis. To address this problem, this paper proposes a linear correlation clustering method, which decomposes the non-linear correlated wind power data to several linear models to solve. The data generated from the nonlinear probabilistic distribution is clustered according to similar linear property, still keeping their major features and characteristics. Through analysis in a case study, it is proved that the proposed linear correlation clustering method performs better than existing Gaussian mixture model in both accuracy and computational efficiency. It is insightful to be utilized for stochastic power flow calculation in power system planning and operation. © 2017 IEEE.

关键词： Stochastic systems

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Call for papers of ZIJIN-2018 International Forum on smart grid protection and control

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Journal of Modern Power Systems and Clean Energy 2018年第3期6卷 619-619页

作者： state key laboratory of smart grid protection and control, SKL of SGPC State Key Laboratory of Smart Grid Protection and Control SKL of SGPC

It is a pleasure to invite experts and scholars from around the world to participate in the 3rd International Forum on smart grid protection and control, which will be held in Nanjing, Jiangsu Province, China from Aug. 18th to 19th, 2018. The purposes of the forum are to strengthen the international academic exchanges in the field of smart grid protection.

关键词： Call for papers of ZIJIN-2018 International Forum on smart grid protection and control

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Study on regional hydropower accommodation and improvement measures in power system

Study on regional hydropower accommodation and improvement m...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Li, Zewen Bie, Zhaohong Han, Zifen Li, Xiaofei Zhi, Yong Zhang, Yankai State Key Laboratory of Electrical Insulation and Power Equipment Shaanxi Key Laboratory of Smart Grid Xi'an Jiaotong University Xi'an China State Grid Gansu Electric Power Company Lanzhou China State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Beijing China Electric Power Research Institute State Grid Gansu Electric Power Company Lanzhou China

ISBN: (纸本)9781538614273

Hydropower is an important part of energy internet, as a principal type of sustainable energy. The promotion of hydropower may help to improve the power source structure and improves the safety, reliability and flexibility of the power system. However, the increasing congestion of the regional hydropower accommodation limits the wider use of hydropower. In this paper, an index system is developed to assess the regional hydropower accommodation. On this basis, an analysis method is proposed to find out the specific reasons of the congestion and the improvement measures by analyzing the relevance of source-load characters and delivery flowgate. The method is proved to be universal and practical through a case study in Western China where the hydropower is the dominant energy. The study is capable to provide necessary suggestions to the safety operation and planning of regional power system and has engineering application value. © 2017 IEEE.

关键词： Internet of Energy

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Reliability analysis of security and stability control systems with remote redundancy in power systems

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IOP Conference Series: Earth and Environmental Science 2019年第3期227卷

作者： Xijian Dong Heping Jia Bijun Li Chao Huo Feng Xue Jianbo Luo Xianbo Ke NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing 211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing 211106 China College of Electrical Engineering Zhejiang University Hangzhou 310027 China Northwest Division of State Grid Corporation of China Xi'an 710048 China.

During the transition period of UHV AC/DC power grid construction in China, the dependence of the secure and reliable operation of power grids on the security and stability control system (SSCS) has been greatly enhanced. SSCS has shown a trend of large-scale, wide-area and complex in recent years. Considering the high reliability requirements of large-scale SSCS, the necessity of redundant configuration of important sites is first outlined in this paper. Moreover, the reliability indices including mis-operation rate and rejection rate of SSCS with and without remote redundancy are analyzed as well as the relationship between reliability indices and failure rate of single device. The key research directions of the reliability research of the SSCS under the new situation are further pointed out.

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