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Coordinate dispatch of combined heat and power system based on approximate dynamic programming 4

Coordinate dispatch of combined heat and power system based ...

引用

4th IEEE Conference on Energy Internet and Energy System Integration, EI2 2020

作者： Hu, Bo Liu, Ding Zang, Chuanzhi Wang, Yue Li, Wanting Liu, Yuqi Zeng, Peng State Grid Liaoning Electric Power Co. Ltd. Liaoning Shenyang China Shenyang Institute of Automation Chinese Academy of Sciences Key Laboratory of Networked Control System Liaoning Shenyang China Chinese Academy of Sciences University Beijing China Technical Service Center Shenyang Liaoning Lightning Protection Liaoning China

ISBN: (纸本)9781728196060

Combined heat and power (CHP) can simultaneously produce electrical and thermal energy. CHP is an important and main component of the power system in areas with heat demand. However, its operating mode limits the flexibility of the system and aggravates the waste of renewable energy. This paper presents a coordinate dispatch algorithm for electric heating integrated energy system (EHIES), a combined heat and power system with wind power. An efficient optimization algorithm based on dynamic programming (DP) is developed, which overcomes the challenges of solving high dimensional optimization problems for the EHIES. The results of simulation experiments show that the proposed coordinate dispatch algorithm can meet the scheduling time requirements, reduce the operating cost of the system and realize the full consumption of wind power. © 2020 IEEE.

关键词： Wind power

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An Autonomous Fire-fighting Robot with Ackermann Steering Mechanism

An Autonomous Fire-fighting Robot with Ackermann Steering Me...

引用

2022 IEEE International Conference on Real-Time Computing and Robotics, RCAR 2022

作者： Zhang, Jiaqing Zhang, Yong Xu, Xiaodong Wu, Zheng Ye, Bin State Grid Anhui Electric Power Research Institute Anhui Province Key Laboratory of Electric Fire and Safety Protection Hefei230601 China XCMG Fire-fighting Safety Equipment Co. Ltd Xuzhou221000 China China University of Mining and Technology School of Information and Control Engineering Xuzhou221116 China

ISBN: (数字)9781665469838

ISBN: (纸本)9781665469838

Fire prevention and control has always been a topic of concern. Autonomous fire-fighting robot can replace firefighters to complete this dangerous task, which improves work efficiency and ensure work safety to a certain extent. Considering the large volume and weight of the fire-fighting robot, the Ackermann steering mechanism is suitable for the chassis of the robot. This paper focus on the design of the autonomous fire-fighting robot using the Ackermann type of chassis. According to the kinematics of the Ackermann structure, this paper use TEB local path planning algorithm and AMCL positioning algorithm to form a navigation framework to complete the autonomous positioning and navigation of the firefighting robot. At last, a simulation environment is built and the proposed scheme are well demonstrated by the experimental results. © 2022 IEEE.

关键词： Chassis

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Low-Carbon Economic Dispatch considering carbon capture unit and demand response under carbon trading

Low-Carbon Economic Dispatch considering carbon capture unit...

引用

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

作者： Renjun Zhou Yishu Li Jiagan Sun Hao Zhang Duli Liu Smart Grids Operation and Control Key Laboratory Changsha University of Science & Technology Changsha Hunan China State Grid Chongqing Changshou Power Company Chongqing China

ISBN: (纸本)9781509054190

The power system needs to coordinate the economic dispatch and the carbon emission under the carbon market. The CO 2 emission characteristics of different generation resources arc analyzed, then generation resources are divided into three categories: high , low and zero carbon emission. Considering the carbon capture unit and the demand response, the Low-Carbon Economic Dispatch model is established with carbon trading cost included in the objective function. To take the uncertainty of carbon price caused by multiple uncertain factors into consideration, a new low-carbon economic dispatch model is built, which uses Conditional Value-at-Risk(CVaR) method to recalculate the carbon trading cost. The YALMIP software is applied to solve the proposed model. The case studies show that low-carbon economic dispatch can improve the utilization of low-carbon and zero-carbon generation resources under carbon trading framework and the dispatch results are affected by the changes of carbon price greatly. Furthermore, with confidence level of carbon price uncertainty rising, the dispatch costs and carbon emissions increase accordingly.

关键词： Carbon dioxide Carbon Load management Economics Uncertainty Energy consumption Dispatching

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A risk assessment approach on electrical substation for dispatching operation

A risk assessment approach on electrical substation for disp...

引用

IEEE Region 10 International Conference TENCON

作者： Guangmin Fan Lingxu Guo Wei Liang Hongtao Qie Dongxu Lu Kai Hou Yuan Zeng Dispatching and Control Center State Grid Tianjin Electric Power Company Tianjin China Dispatching and Control Center State Grid Tianjin Electric Power Company China Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin China Tianjin University Tianjin Tianjin CN

ISBN: (纸本)9781479986422

Based on the fact about self-regions in current power system, a new topology regions method is firstly proposed. Then a new comprehensive risk assessment method on electrical substation for dispatching operation is presented, in which the risk of bus system arrangement and equipment operation state within a substation and the overall topology of a substation during a whole power system are all considered. Finally, the correctness and effectiveness of this method are tested by the utilization in a real power system.

关键词： Substations Topology Risk management Load flow Satellites Power system stability Dispatching

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Methodology for Regional Carbon Emission Projections and Scenario Analysis Based on the STIRPAT Model

Methodology for Regional Carbon Emission Projections and Sce...

引用

System Simulation Technology and its Application (CCSSTA), IEEE China Conference on

作者： Xihao Xu Xiangyu Kong Yang Wang Jiancun Liu Yubo Wang Fanfan Yu Tianjin Key Laboratory of New Energy Power Conversion Transmission and Intelligent Control Tianjin University of Technology Tianjin China Key Laboratory of Smart Grid Tianjin University Tianjin China China State Grid Tianjin Electric Power Company Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

Analyzing the factors that influence carbon emission reduction and predicting the peak year of carbon emissions will help the region clarify the direction of emission reduction efforts and take the lead in achieving carbon peak and carbon neutrality. This paper proposes a regional dual-carbon target and path planning method. Firstly, an indicator system is established to explore the relationship between regional carbon emissions and factors such as the economy, population, and energy efficiency consumption. Indicators with higher correlation are selected through gray correlation analysis. Then, the Stochastic Impacts by Regression on Population, Affluence, and Technology (STIRPAT) model is constructed to predict carbon emissions in the region. Lastly, a scenario design is conducted for the dual-carbon target, predicting carbon emissions under different scenarios while considering carbon sinks. The results are analyzed to finalize the regional dual-carbon target and path.

关键词： Energy consumption Analytical models Correlation Economic indicators Stochastic processes Predictive models Carbon neutral Path planning Systems simulation Planning

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Research on Dead-Time Compensation Method for Low Voltage Delta Connected Induction Motor 1

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Yong, Tao Liu, Jing Liu, Yechun Tang, Mengyang Qiao, Hui Miao, Yiru Key Laboratory of Smart Grid and Intelligent Control of Nanchong Southwest Petroleum University Nanchong637001 China State Grid Jiangsu Electric Power Co. LTD. Extra-High Voltage Branch Company Nanjing211002 China College of Electrical and Information Engineering in Hunan University Changsha410082 China The Sixth Design Institute of Machinery Industry Co. Ltd. Zhengzhou450007 China

ISBN: (数字)9789819904082

ISBN: (纸本)9789819904075

Low voltage as 48 V and large power induction motor will be largely used in hybrid and pure electric vehicle (EV) because of its very high safety. But the winding cables are so thick that assembly of neutral point is very inconvenient and delta connection has to be applied. However, some new problems such as loop current, harmonics, dead-time arise with delta connection. Aiming at the dead-time problem of this induction motor, the characteristics of dead time effect were analyzed in detail, and the two phases average voltage compensation method was derived. Analysis indicate that voltage error caused by snubber circuit under small current leads to the current to be clamped in the vicinity of zero, and presents a compensation method for this error. The earlier crossing zero compensation and a simple method to determine the direction of current are presented to solve zero current clamping effect and the complicate algorithms are avoided. The simulation and experiment results verify the validity and feasibility of these methods. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Induction motors

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Research and Application of Simplified Service Bus in New Generation Dispatching Technical Support System and Heterogeneous System

Research and Application of Simplified Service Bus in New Ge...

引用

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

作者： Yi Qiang Wan Shupeng Wang Zhemin He Weihua Zhang Ping Zhang Feng System R&D Center NARI Group Corporation(State Grid Electric Power Research Institute) NARI Technology Co. Ltd Nanjing China State Grid Shanxi Electric Power Co. Ltd Taiyuan China System R&D Center State Key Laboratory of Smart Grid Protection and Control Nanjing China

With the rapid development of UHV AC / DC hybrid power grid, in order to cope with the large-scale access of new energy, the power market reform has been continuously promoted. Therefore, it is proposed to build a new generation of dispatching technical support system to meet the needs of future power system development and safe, stable and high-quality operation. This paper proposes a simplified service bus that supports a new generation of service-oriented architecture, and meets the deployment characteristics of cloud terminals that are cross platform, lightweight, easy to deploy, open and efficient. The simplified service bus can well meet the location independent characteristics and be easily deployed in and out of the system. The flexible protocol processing mode cooperating with the gateway can meet the needs of accessing the services of the system and external systems. At the same time, it supports multiple man-machine network and automatic switching of service network shutdown under N-1 mode, which greatly improves the availability and stability of the system, Which Provide a strong guarantee for the safe, stable and efficient operation of the new generation system.

关键词： Cloud computing Protocols Switches System integration Power system stability Logic gates Dispatching

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Short-Term Power Forecasting for Wind Power Generation Under Extreme Weather Conditions

Short-Term Power Forecasting for Wind Power Generation Under...

引用

IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia)

作者： Yuexin Song Yizhi Chen Chenghong Tang Wei Wang Hao Xiao Wei Pei Yanhong Yang Grid Technology Research Group Institute of Electrical Engineering Chinese Academy of Sciences Beijing China State Key Laboratory of Smart Grid Protection and Control NARI Technology Co. Ltd NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing China Chinese Academy of Sciences Institute of Electrical Engineering Beijing China

Extreme weather poses a great challenge to the safe operation of wind power and new power systems dominated by wind power. Providing accurate wind power prediction will be an effective response. For this reason, this paper proposed a short-term power forecasting for wind power generation under extreme weather conditions. Firstly, the relationship between wind speed and wind turbine output power is analyzed and a wind power generation model is established. Then, the Long Short-Term Memory Neural Network (LSTM) is applied to construct a short-term power prediction model for wind turbines, and establishes three models for wind turbine decommissioning under extreme weather. Moreover, the climbing control strategy of wind turbine is also investigated to guarantee the system safety, stability and operation economy. Finally, the numerical analysis is carried out on the wind farm consists of 28 wind turbines, the results verify the effectiveness and superiority of the proposed method.

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Finite element simulation of reactor vibration and noise based on multi physical field coupling

Finite element simulation of reactor vibration and noise bas...

引用

2022 International Conference on Manufacturing, Industrial Automation and Electronics, ICMIAE 2022

作者： Wang, Yanzhao Guo, Zhaofeng Chen, Chuanmin Ni, Yuan China Electric Power Research Institute Co. Ltd. State Key Laboratory of Power Grid Environmental Protection Wuhan China Hebei Vocational University of Technology and Engineering Xingtai China North China Electric Power University Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and Engineering Baoding China

ISBN: (数字)9781665473965

ISBN: (纸本)9781665473965

Aiming at the noise radiation and propagation problem in the external sound field of power reactor, a simplified reactor model was established using ANSYS workbench, and the simulation model was imported into the acoustic software LMS ***, and the finite element mesh was divided by the direct boundary element method, the vibration of the reactor surface is simulated and calculated, finally, the characteristics of the noise radiation and the sound field are analyzed, and the noise value around the reactor is predicted to show that the sound diffraction phenomenon is very strong, the sound pressure value changes rapidly, and the relevant results can provide a corresponding theoretical basis for reactor noise reduction. © 2022 IEEE.

关键词： Acoustic fields

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Analysis of Assistant Reactive Shielding Coil for Electric Vehicle Wireless Charging System

Analysis of Assistant Reactive Shielding Coil for Electric V...

引用

Information Technology,Big Data and Artificial Intelligence (ICIBA), International Conference on IEEE International Conference on

作者： Shiliang Hou Bo Yu Wei Yan Chongming Zhu Ke Wang Zhenghao Wu College of Electrical and Automation Engineering Nanjing Normal University Nanjing China State Key Laboratory of Start Grid Protection and Control of NARI Group Corporation Nanjing China

ISBN: (数字)9781728152240

ISBN: (纸本)9781728152257

To realize electromagnetic safety of wireless power transmission (WPT) system for electric vehicle (EV), the shielding methods should be analyzed. This paper proposes a method of using assistant reactive shielding coils to cancel the electromagnetic field (EMF) outside the working area of WPT system. By tuning compensation capacitance of shielding coil automatically, we design 3 cases with different location and shape of coils to achieve reactive shielding. By comparison and simulation, placing ring shielding coils above receiving (Rx) pad and under transmitting (Tx) pad is the best way to suppress EMF of WPT system's non-working area. The shielding coils' radius is slightly bigger than coupling coils' outer radius. This paper also provides a new method to realize WPT shielding system's automatic adjustment for resonance. Besides, assistant reactive shielding coils' cost is lower than traditional aluminum plate.

关键词： Capacitance Capacitors control systems Couplings Magnetic shielding Ferrites Topology

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