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检索条件"机构=tate Key Laboratory of Smart Grid Protection and Control"

共 367 条记录，以下是101-110 订阅

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A Synchronization Stability Enhancement control Method for 100% Converter-based System Based on An Improved Kuramoto Model 5

A Synchronization Stability Enhancement Control Method for 1...

引用

5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Zou, Yan Wang, Zhen Li, Zhicheng Xiong, Jiali Deng, Chaoping Cai, Qiang Zhejiang University School of Electrical Engeerning Hangzhou China State Grid Fujian Electric Power Research Institute Fujian Key Laboratory of Protection and Operation Control for Smart Grid Fuzhou China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

In this paper, a synchronization stability enhancement control method is developed to improve the stability performance of power systems with 100% converter-based renewable generation. An improved Kuramoto-type model is established with a time-variable power injection taken into consideration, which can represent load and/or generation variation. Then a consensus tracking controller (CTC) to help all generators to trace a reference bus with specified common frequency rapidly is developed. A group of new synchronization conditions and the attraction region based on the improved Kuramoto-type model are then derived. Further, a control gain design scheme for CTC is proposed based on the two derived stability rules, i.e., the phase angle cohesiveness and the frequency bounded. Finally, a modified three-machine nine-bus system is used to validate the effectiveness of the proposed method and a comparison study result show that the transient stability performance of 100% power-converter system can be greatly improved. © 2022 IEEE.

关键词： Synchronization

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A new approach for calculating the average frequency of power system based on the identification of regional inertia center nodes 2

A new approach for calculating the average frequency of powe...

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2nd International Conference on Electrical Engineering and Computer Technology, ICEECT 2022

作者： Wan, Zhonghui Liu, Fusuo Wu, Xuelian State Key Laboratory of Smart Grid Protection and Control Jiangsu Nanjing210003 China NARI Group Corporation/State Grid Electric Power Research Institute Jiangsu Nanjing210003 China

The grid structure of the modern power system is complex and the space span is large. When the power system is disturbed to generate unbalanced power, the transient distribution process among the various synchronous units leads to the spatiotemporal distribution characteristics of the frequency response of the system. By measuring the generator Frequency and Inertia, the inertia center frequency can be calculated. Based on the two-generator system, the relationship between generator frequency and bus frequency is analyzed. A method for selecting the frequency inertia center node of the local power grid in the power system is proposed, and the inertia center frequency of the system is estimated based on the measured frequency at this point. Taking 10 machines and 39 nodes as an example, the simulation calculation is carried out to verify the effectiveness of the proposed method. © Published under licence by IOP Publishing Ltd.

关键词： Frequency response

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Parallel Decomposition and Coordination Algorithm for Security Constrained Optimal Power Flow 1

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6th PURPLE MOUNTAIN FORUM on smart grid protection and control, PMF2021

作者： Xiaoqin, Xia Wei, Xu Zhen, Yuan Xiaotong, Xu NARI Group Corporation/State Grid Electric Power Research Institute Jiangsu Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Jiangsu Nanjing211106 China

ISBN: (数字)9789811671562

ISBN: (纸本)9789811671555

In order to improve the online performance of power system control decision-making, this paper proposes a method to resolve the economic optimization problem considering security constraints into a base-case optimal power flow master problem with the objective of minimizing the generation cost and a series of security check sub problems relevant to various faults. A parallel decomposition and coordination algorithm based on adjustable space slices is proposed to avoid alternating iterations. First of all, the adjustable space is sliced to form multiple slicing schemes according to different proportions. Based on the parallel computing platform and the slicing schemes, the primal dual interior point method is used to solve the base-case optimal power flow master problem. Secondly, security check of faults is carried out by parallel computing for different optimized cases. Then, the solution with the minimum cost is chosen from the safe solutions. Finally, the effectiveness of the proposed method is verified by a case of a city power gird in Guizhou province. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Decision making

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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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Research and Application of Configuration Animation Technology for Power grid Dispatching and control Systems Based on CIM/G 7th

Research and Application of Configuration Animation Technolo...

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7th Purple Mountain Forum on smart grid protection and control, PMF2022

作者： Yan, Zhen Xu, Hua Lv, Zhimeng Yin, Xia Bao, Xiongwei Huang, Kun Nanjing211106 China NARI Technology Co. Ltd Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing211106 China

ISBN: (纸本)9789819900626

For the current traditional power grid dispatching and control system, the display effect of configuration software interface is ordinary, and the configuration interface is cumbersome. This paper presents a state animation technology of configuration software for power grid and control system. By defining multiple states in the configuration editor, modifying component attributes in different states, setting state switching animation types, associating the animation change functions of component attribute values in different states, saving in CIM/G format, and then opening the corresponding files through the browser, the component attributes can be dynamically transformed between attribute values in different states, Batch modification and animation of component attributes are realized, which enriches the display effect of the interface and improves the friendliness of human-computer interaction. © State grid Electric Power Research Institute 2023.

关键词： control systems

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Automatic Generation Method of Multi-Bays Graph in Power System based on Real-Time Topological Model

Automatic Generation Method of Multi-Bays Graph in Power Sys...

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2022 Global Conference on Robotics, Artificial Intelligence and Information Technology, GCRAIT 2022

作者： Gao, Yuan Chen, Lianjie Si, Peng Su, Yunguang Fang, Caishen Xu, Hua Huang, Kun NARI Technology Co Ltd. Nanjing China NARI Technology Co Ltd. State Key Laboratory of Smart Grid Protection and Control Nanjing China

ISBN: (数字)9781665481922

ISBN: (纸本)9781665481922

Substation supervisory control is an essential part of power grid monitoring system. Besides the power flow between substations, the running states of the devices in substations are important to the staff in power grid. At present, the substation devices with their running states are drawn in electrical bay graphs, which are widely used in the power grid dispatching department. Traditional electrical bay graphs contain devices in only one substation and the drawing process of the graph relies on manual work. In this paper, an automatic generation method of multi-bay graph in power system based on real-Time topological model is proposed. There are two stages in the method. In the first stage, necessary model information is obtained according to topology in real-Time database. In the second stage, the bay features are firstly built in the method and the classification of the bays is achieved by these features. Secondly, a data structure of device tree is proposed and the automatic layout of devices is realized based on the data structure. Finally, automatic wiring of the devices is achieved from the perspective of aesthetic and objectivity. Experimental results show that the graph drawn by the proposed method could not only reflect the actual connection mode and running states of the substation devices but also show the power flow between these substations. The proposed drawing method could reduce manual operations and improve the work efficiency of the power grid staff. © 2022 IEEE.

关键词： Data structures

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High-performance Full Electromagnetic Transient Simulation System of Fujian Power grid and its Application 5

High-performance Full Electromagnetic Transient Simulation S...

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

作者： Li, Zhicheng Tang, Zhijun Zhang, Dongyuan Chao, Wujie Peng, Xiaoyan Leng, Yongjie Electric Power Research Institute State Grid Fujian Electric Power Co. Ltd Fujian Key Laboratory of Smart Grid Protection and Operation Control Fujian China Electric Power Research Institute State Grid Fujian Electric Power Co. Ltd Fujian Key Laboratory of Smart Grid Protection and Operation Control Fuzhou China Integrated Electronic Systems Lab Co. Ltd. Jinan China

ISBN: (纸本)9781665434256

This paper proposes a high-performance full electromagnetic transient simulation system of Fujian power grid. The system is developed based on the General Transient Simulator (GTS), which is a self-developed electromagnetic transient simulation tool. The key technologies of the simulation system, such as the high-performance automatic parallel computing technology and the large time step electromagnetic transient simulation technology, are introduced. The full electromagnetic transient simulation of the AC power system above lOkV in Fujian power grid based on the dispatching control cloud platform is realized. Study cases are carried out and the validity and accuracy of the simulation are verified by comparing the actual fault recording data and simulation waveforms. © 2021 IEEE

关键词： Transients

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A Rapid Method to Configure Inspection Object for Substation Robot Based on Visual Equipment Detection and PTZ control Model 6th

A Rapid Method to Configure Inspection Object for Substation...

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6th PURPLE MOUNTAIN FORUM on smart grid protection and control, PMF2021

作者： Zhang, Qingwei Sun, Han Wang, Jing State Key Laboratory of Smart Grid Protection and Control Nari Group Corporation Jiangsu Nanjing211106 China Nari Group Corporation Jiangsu Nanjing211106 China

ISBN: (纸本)9789811671555

The configuration for substation robot inspection task includes the following steps: configuring inspection object, scanning map package, building wireless AP, establishing database, etc. Previous work mostly relies on the experience of staff to configure inspection object, which is a waste of manpower and material resources. Besides, configuration for each inspection object of substation robot manually is a time-consuming task, which leads to a decrease in the effectiveness and accuracy of robot because of artificial error. A rapid configuration method to configure inspection object for substation robot inspection task is proposed based on visual equipment detection and PTZ control model. It aims to grab the inspection object automatically without manual intervention. The efficacy of the proposed method is verified through experimental results of substation. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Inspection

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Research on the Structure Optimization of grid Frame Based on Generalized Slow Coherency Clustering

Research on the Structure Optimization of Grid Frame Based o...

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2019 IEEE PES Innovative smart grid Technologies Asia, ISGT 2019

作者： Weiqiang, Liang Fei, Tang Mengqi, Qing Chufei, Xiao Wen, Jian Mengjiao, Qing Jiale, Liu Feifei, Wang Fusuo, Liu School of Electrical Engineering and Automation Wuhan University Wuhan China State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation Nanjing211006 China

ISBN: (纸本)9781728135205

Considering that the existence of fuzzy nodes will increase the difficulty of clustering when the system splitting occurs, a method is proposed to change the network topology, reduce the number of fuzzy nodes, and optimize the system operation. Firstly, we can obtain the modal matrix of all system nodes based on the generalized eigenvalue analysis. Secondly, Gauss elimination with pivoting is used to construct the slow coherence correlation matrix. Thirdly, the optimal scheme is obtained by continuously modifying the grid structure. It can reduce the number of fuzzy nodes, which is more convenient to maintain the stable operation of the system. Finally, the simulation results of IEEE-118 system show that the proposed method is reasonable and effective. © 2019 IEEE.

关键词： Network topology

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Analysis of Single-phase Grounding Fault in Low-resistance Grounding System Containing Inverter Interfaced Distributed Generator 6

Analysis of Single-phase Grounding Fault in Low-resistance G...

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6th International Conference on Power and Renewable Energy, ICPRE 2021

作者： Wu, Tonghua Qiao, Yida Zha, Daojun Zheng, Yuping Nari Group Corporation State Key Laboratory of Smart Grid Protection and Control Nanjing China Hefei University of Technology Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving Hefei China

ISBN: (纸本)9781665449618

In the low-resistance grounding system with inverter interfaced distributed generator (IIDG), the IIDG widely uses the neutral point through the low-resistance grounding method. But the IIDG, which adopts the neutral point grounding through a low resistance, will affect the fault characteristics of the original low-resistance grounding system. This paper uses the symmetrical component method to establish a single-phase grounding fault model for the distribution network where the neutral points of the IIDG and the main network are grounded with low resistance. The fault current, the zero-sequence current, and the three-phase current of the line are analyzed when the upstream line of the grid connection point, the downstream line of the grid connection point, and the adjacent feeder fail. Finally, a simulation model was built using Matlab/Simulink to verify the correctness of the analysis. The conclusion provides a basis for the protection configuration of the distribution network in which the neutral points of the IIDG and the main network are grounded with low resistance. © 2021 IEEE.

关键词： Electric grounding

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