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SSRN 2024年

作者： Zhang, Xiaoming Li, Denghui Grebogi, Celso Liu, Xianbin State Key Lab of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics Jiangsu Nanjing210016 China School of Mathematics and Statistics Hexi University Gansu Zhangye734000 China Institute for Complex Systems and Mathematical Biology King’s College University of Aberdeen AberdeenAB24 3UE United Kingdom

We consider a dynamical system that describes a convex planer body with a smooth boundary, which falls under the influence of gravity and is elastically reflected upon hitting a wall. Under suitable restriction on the system's parameters, the system is equivalent to a billiard problem within a cylinder. We prove that the dynamics of the system is intimately linked to a variational problem, corresponding to a twist map. Moreover, we utilise the established variational method to investigate the stability of trivial periodic orbits and near-integrable dynamics when this planar body closely approximates a disc with its centre of mass at the geometric centre. Numerical results validate our mathematical findings and highlight the system's intricate dynamics. © 2024, The Authors. All rights reserved.

关键词： Dynamics

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Improved Backward Scenario Reduction Method for Generation Planning Considering Extreme Scenarios

Improved Backward Scenario Reduction Method for Generation P...

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

作者： Yigong Xie Ziyu Huo Chen Wu Wenfeng Yao Jiayang Wang Ying Qiao Power dispatch control center Yunnan Power Grid Guangzhou China State Key Lab of Power Systems Dept. of Electrical Engineering Tsinghua University Beijing China Planning and construction research Center Yunnan Power Grid Kunming China China Southern Power Grid Research Institute State Key Laboratory of Current Transmission Technology Guangzhou China

Renewable energy sources exhibit significant variability and uncertainty, showing numerous distinct scenarios. In the context of generation planning, it's imperative to employ scenario reduction techniques to select representative scenarios that capture the characteristics of renewable energy outputs. However, traditional scenario reduction methods often fail to adequately preserve the extreme output scenarios of these renewables. This paper improves the simultaneous backward reduction method (SBR), enhancing its capability to effectively capture the extreme output scenarios of renewable sources. As a result, the generation planning becomes more economically viable and more reliable. The efficacy of the improved SBR method is demonstrated using data from the Qinhuangdao region in China.

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Design of Cascade control Framework for ROV control and Simulation 17

Design of Cascade Control Framework for ROV Control and Simu...

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17th IEEE International Conference on Mechatronics and Automation, ICMA 2020

作者： Qiu, Changlin Kong, Shihan Zhou, Chao Yu, Junzhi Institute of Automation Cas State Key Lab Management and Control for Complex Systems Beijing100190 China Naval Research Academy Beijing100072 China

ISBN: (纸本)9781728164151

In this paper, a cascade control framework is proposed a class of remote operated vehicles (ROVs) to enhance the control performance and capacity of interference resistance. Specifically, the control framework is composed of a fuzzy-based controller in primary loop and a PID neural network based controller in secondary loop. In the primary loop, fuzzy controller is implemented to avoid precise establishment of ROV model for calculating the expected velocity of the vehicle. Furthermore, in the secondary loop, a PID neural network with adaptation is adopted to accomplish the capacity of resisting disturbance. Eventually, the control framework is verified by theoretical and simulation analyses. The obtained results indicate that the proposed cascade control framework endows the ROV with the ability to guarantee the control performance and attenuate external disturbance effectively. © 2020 IEEE.

关键词： controllers

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A Modified Line-of-Sight Method for Path Tracking Applied to Robotic Fish 17

A Modified Line-of-Sight Method for Path Tracking Applied to...

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17th IEEE International Conference on Mechatronics and Automation, ICMA 2020

作者： Du, Sheng Zhou, Chao Yu, Junzhi Wu, Zhengxing State Key Lab Management and Control for Complex Systems Institute of Automation Cas Beijing100190 China Naval Research Academy Beijing100072 China

ISBN: (数字)9781728164168

ISBN: (纸本)9781728164151

This paper proposes an improved line-of-sight method to navigate a two-joint-actuated tuna-like robotic fish. Based on the characteristics of thunniform swimmer, a simplified kinematic and dynamic model is constructed, and the intrinsic body swing is illustrated. To deal with the nonlinear and under-actuated dynamics of the robotic fish, the reference head angle is designed with cross-track error, which substantially simplifies the control of linear path tracking. Furthermore, with the physical constraint, co-simulation using Automatic Dynamic Analysis of Mechanical systems (ADAMS) software and MATlab simulink reveals the effectiveness. The obtained results show that the proposed method is able to make both the cross-track error and the heading error fluctuate in an acceptable range quickly. © 2020 IEEE.

关键词： MATlab

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Research on General Terminal of Intelligent Measurement and control of Distribution Network Based on Open Architecture

Research on General Terminal of Intelligent Measurement and ...

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Telecommunications, Optics and Computer Science (TOCS), IEEE Conference on

作者： Xiaobing Xiao Yongxiang Cai Xiaomeng He Yue Li Yujie Ding Ergang Zhao Electric Power Research Institute of Guizhou Power Grid Co. Ltd Guiyang China Generation Equipments Dept. of Electrical Engineering State Key Lab of Control and Simulation of Power Systems Beijing China

ISBN: (纸本)9781665470544

With the continuous advancement of the construction of new power systems, the data information of the power system is increasing exponentially, and the spatiotemporal distribution of the use of smart terminals and electrical equipment is more scattered. Data collection and analysis of traditional power systems will be a huge challenge. In order to meet the actual needs of multi-scenario, multi-service, and changeable measurement and control objects of intelligent distribution network, this paper firstly studies the design of general terminal open architecture for distribution network multi-measurement and control scenarios, proposes a data service architecture based on open architecture, and establishes a self-description-based open architecture design. The unified information model of the Internet of Things protocol, research and development of intelligent measurement, and the controlling of universal terminals meet multiple communication methods, and realize the deployment verification of intelligent measurement.

关键词： Power measurement Computer architecture Distribution networks Data collection Optical variables measurement Hardware Power systems

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Consensus-based Nodal Pricing Mechanism for Automated Demand Response Considering Congestion Management on Distribution Networks

Consensus-based Nodal Pricing Mechanism for Automated Demand...

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2020 IEEE/IAS Industrial and Commercial Power System Asia, I and CPS Asia 2020

作者： Luo, Gang Chen, Yijing Zhao, Yue He, Yujun Gong, Chao Zhao, Chen Power Dispatching and Control Center Guangdong Power Grid Co. Ltd Guangzhou China State Key Lab of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing China

ISBN: (纸本)9781728143033

This paper investigates a consensus-based nodal pricing mechanism for incenting automated demand response in the deregulated market environment. These small-scale customers are autonomously managed by automated demand response (DR) controllers, which are capable of scheduling user's load devices to follow a day-ahead 24h price signal from electricity distribution companies (EDC). First, an alternating current optimal power flow (ACOPF) on the distribution network is formulated considering the participation of automated DR. Then, a consensusbased approach is exploited to adjust the nodal price and DR profile for each customer using primal-dual decomposition. The proposed mechanism is compared with a day-ahead pricing (DAP) program on a test distribution network and numerical results have shown promising performance in supporting the congestion management on the distribution grid. © 2020 IEEE.

关键词： Software testing

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A Study of Forecast Uncertainty Handling Technologies for MGEMS Considering Power Trading between MGs

A Study of Forecast Uncertainty Handling Technologies for MG...

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2020 IEEE/IAS Industrial and Commercial Power System Asia, I and CPS Asia 2020

作者： Zhao, Yue Gao, Hong-Chao Luo, Gang Gong, Chao Zhao, Chen Zhang, Xuan Guangdong Power Grid Co. Ltd Power Dispatch and Control Center Guangzhou China Generation Equipments Tsinghua Univeristy State Key Lab of Control and Simulation of Power Systems and Beijing China

ISBN: (纸本)9781728143033

Attention to efficient and cost-effective utilize of energy has become a common view in the energy sector. A variety of microgrid energy management systems are developed and installed to achieve the goal. However, the performance of the microgrid energy management system depends on some factors, such as forecast uncertainty, measurement error, and so forth. Among them, a series of handling technologies for the forecast uncertainty are the focus in this paper. It includes accuracy improvement of prediction program based on time series method, operation strategy adoption, real-time control scheme for the energy storage equipment, and proposes a robust rule to against the extreme situation as well. This not only achieves effective energy management, but also helps to avoid operation cost increasing induced by the transaction bias assessment through the improvement of energy scheduling accuracy. The effectiveness and validity of these means is verified in the constructed campus microgrids at Chonnam National University. © 2020 IEEE.

关键词： Energy management

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Benefit Assessment Analysis of Electrochemical Energy Storage

Benefit Assessment Analysis of Electrochemical Energy Storag...

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Power Science and Technology (ICPST), IEEE International Conference on

作者： Junliang Ma Zhidong Wang Shuming Zhang School of Electrical Engineering Northeast Electric Power University Jilin China Transmission Grid Planning Center State Grid Economic and Technological Research Institute Co. Ltd Beijing China State Key Lab of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing China

Along with the power fluctuation and other problems caused by large-scale grid connection of renewable energy, electrochemical energy storage has been widely concerned by researchers. Firstly, the technical characteristics and application scenarios of important electrochemical energy storage are summarized in this paper. Then the analysis focus on the evaluation indexes of the economic and social benefits of electrochemical energy storage on the generation side, grid side and user side. Finally, in order to adapt to the landing of carbon peaking and carbon neutral targets, and combined with the implementation of time-sharing tariffs, energy storage planning problems that need further in-depth research are proposed in view of the shortcomings in existing energy storage planning studies, which are of great significance for improving the adaptability of subsequent energy storage planning studies.

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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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Research on primary frequency regulation of grid integrated concentrating solar power plant 9

Research on primary frequency regulation of grid integrated ...

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9th China International Conference on Electricity Distribution, CICED 2021

作者： Qian, Minhui Zhao, Dawei Zhao, Liang Zhu, Lingzhi Wu, Fubao Chen, Ning Qin, Wenping Xu, Chang Jiangsu Eng. Technol. Res. Ctr. for Ener. Storage Conversion and Applic. China Elec. Pwr. Res. Inst. State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems Nanjing China Shanxi Key Lab of Power System Operation and Control Taiyuan University of Technology Taiyuan China College of Energy and Electrical Engineering Hohai University Nanjing China

ISBN: (纸本)9781728192291

High share of renewable energy will be one of the basic features of power systems in the future around the world. Compared with photovoltaic (PV) and wind power, concentrating solar power (CSP) equipped with heat storage system has similar regulation characteristics with thermal power units, and it can effectively overcome the intermittent and volatility of PV and wind power generation. Meanwhile, the CSP units can strongly support the voltage, frequency and short-circuit capacity of power systems. So, CSP is a very promising power generation technology for the future power system. The CSP unit has better ramp ability than thermal power unit, and can generally reach a speed between 2% and 5% of rated power per minute. Stated thus, the CSP unit has a good potential to participate in the primary frequency regulation of power grid. At present, there are many researches on the performance of each subsystem of the CSP unit in worldwide, and there are also some theoretical researches on the participation of CSP unit in the dispatching operation of power system. However, there is a lack of research reports on CSP plant's participation in the primary frequency regulation of the power grid, which is an urgently needed feature for the future power systems with high share of renewable energy. In this paper, a model with primary frequency regulation ability of CSP unit is established in DIgSILENT PowerFactory software. A revised two-area four-machine system is used to investigate the CSP unit's participation in primary frequency regulation of power system. The simulation results show the good frequency regulation performance of CSP unit, which can effectively support the stable operation of power system with high share of renewable energy in the future. © 2021 IEEE.

关键词： Concentrated solar power

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