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Research on Active Support control Strategy and its Performance of Renewable Energy Power Station with Multiple Energy Sources 7

Research on Active Support Control Strategy and its Performa...

引用

7th IEEE Conference on Energy Internet and Energy system Integration, EI2 2023

作者： Zeng, Guanming Tu, Liang Zhu, Yihua Hu, Yun Luo, Chao Li, Shengnan State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid National Energy Power Grid Technology R&d Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control For New Energy Power System Csg Key Laboratory For Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China State Key Laboratory of Hvdc Electric Power Research Institute China Southern Power Grid Csg Key Laboratory For Power System Simulation Electric Power Research Institute China Southern Power Grid Guangzhou China National Energy Power Grid Technology R&d Centre Guangdong Provincial Key Laboratory of Intelligent Operation and Control For New Energy Power System Guangzhou China Yunnan Power Grid Co. Ltd. Electric Power Research Institute Yunnan Kunming China

ISBN: (纸本)9798350345094

The increasing integration of renewable energy reduces the inertia and frequency support capacity of the power system. The issue of frequency stability has become one of the core issues in the security and stability of power system and the efficient consumption of renewable energy nowadays. To improve the performance of renewable energy power station (REPS), based on the analysis of typical active support control logic and relative performance requirements of REPS with single energy source (SES), an active support control strategy and coordinated control logic of active power of REPS with multiple energy sources (MES) are proposed in this paper. The performance of proposed strategy is theoretically analyzed from the aspect of dominant energy source and the effect of the capacity of energy storage. The effectiveness of the proposed strategy and the accuracy of the theoretical analysis of performance are verified by realtime simulation. © 2023 IEEE.

关键词： Renewable energy

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Frequency control Strategy of Storage-Based Wind Farm as Black Start Power Source

Frequency Control Strategy of Storage-Based Wind Farm as Bla...

引用

Power and Electrical Engineering (ACPEE), 5th Asia Conference on

作者： Xuemei Fan Hongtao Wang Xiaoting Lv Zhen Song Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China

With the advancement of new energy technologies, renewable energy generation is predicted to dominate the power system's black-start recovery process as a black-start power source. This study investigates the operating principle of BSWPS, factors influencing its output, effective output capacity, and its potential to engage in primary and secondary frequency regulation during power system black start. A BSWPS simulation model is developed, the control strategy of BSWPS as a system black start power source is investigated, and the possibility of BSWPS participating in frequency regulation during the black start phase is investigated. In order to allocate power reasonably, the paper suggests a strategy that combines a black start optimization model and a battery storage-based wind power system scheduling system model. The wind power prediction method is used to assess the wind power output, and Gurobi is used to solve the scheduling system model. The black start of the power system is effectively accomplished, according to test results in a system that has been retrofitted with a real grid, and the frequency stability of the system is greatly improved.

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Risk Assessment of Stage Machinery Based on Entropy Weight and Fuzzy Inference Method

Risk Assessment of Stage Machinery Based on Entropy Weight a...

引用

Culture-Oriented Science and Technology (CoST), International Conference on

作者： Huiqin Wang Qingqing Yang Zhen Li Huiqi Wang Key Laboratory of Acoustic Visual Technology and Intelligent Control System Ministry of Culture and Tourism Beijing China

It is of great significance to find out the hidden hazards of the stage machinery in advance and formulate the corresponding protective measures to improve the safety of the stage performance. A comprehensive method that integrates entropy weights and the fuzzy inference is proposed. Firstly, the risk factors are identified through Failure Modes and Effects Analysis (FMEA) method, with the information obtained by field survey and research. Then, the entropy weight method and Fault Tree Analysis (FTA) methods are adopted to analyze the risk factors so as to obtain the probability of the hazardous events. Lastly, the risk level of different event is obtained by the fuzzy inference method. The simulation result proves that the model is reasonable, objective, and feasible.

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Classification Method of Customer Based on Load Curve Image Information

Classification Method of Customer Based on Load Curve Image ...

引用

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

作者： Lin Wei Li Zhang Yuxi Wang Xinyan Su Ming Yang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China

The classification of customer is an essential basis for demand-side-oriented power system operation and control research. In order to accurately identify the customer behavior, this paper proposes a classification method of customer based on load curve image information. Inspired by the application of deep learning theory in image processing, the one-dimensional load series is transformed into a two-dimensional recurrence plot as the input sample, then convolutional neural network (CNN) and support vector machine (SVM) algorithms are combined to construct a load feature extraction and customer classification model, so that the machine vision technique can work to extract curve feature without temporal information loss of the load data. SVM is introduced as the classifier in the CNN model, and the optimal classification hyperplane is built in the high-dimensional feature space by adjusting the classification threshold and hyperplane normal vector which enables the customer classification to accurately reflect the daily load curve feature. Simulations are performed using practical load data of a city in China, and the results show that the load curve image information based method has satisfactory performance in terms of the effectiveness of customer classification and the accuracy of feature extraction.

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Multiple Time Resolution Dispatching Model for Distribution Network Considering Various Active Management Measures

Multiple Time Resolution Dispatching Model for Distribution ...

引用

IEEE Asia Power and Energy Engineering Conference (APEEC)

作者： Jianan Liu Mingqiang Wang Junshao Guo Junyu Ge Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University Jinan China

With the rapid increase of renewable energy sources (RESs), traditional sequential dispatching of active distribution network (ADN) is facing more and more challenges. This paper establishes a unified economic dispatching model for short-term operations of distribution network (DN) with multiple active management measures. Network reconfiguration is also considered to improve the flexibility of ADN. Multiple time resolution is applied to simultaneously determine the operation state of controllable units, network topology, and the output of active management devices. In order to better capture RES and load fluctuations, the proposed model uses 5min, 15min and 30min time resolution in the first three hours, respectively. The entire dispatching model can be transformed into a mixed integer linear programming (MILP) problems via several linearization methods. The proposed model is tested on the IEEE 33-node distribution system. The validity and effectiveness of the proposed model are illustrated by case studies.

关键词： Renewable energy sources Fluctuations Network topology Energy resolution Energy measurement Distribution networks Dispatching

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Research on Load-shedding control Strategy Considering Wind Farm Output Fluctuation Based on WAMS

Research on Load-shedding Control Strategy Considering Wind ...

引用

International Conference on Power system Technology (POWERCON)

作者： Dan Xie Qing Chen Ye Sun Ning Shao Yuzhan Dong Wei Ding Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China

After the fault line is removed, the active power will transfer, which may cause the related lines to overload. If the backup protection acts before the safety automatic device complete its action, it may cause a cascading trip. Large-scale wind farm access will also affect the network active power distribution. This paper proposes a backup protection load-shedding control strategy based on a wide area measurement system (WAMS) considering wind farm output fluctuation to realize the coordination of backup protection and safety automatic devices in a power system with wind farm access. The effective control node pair is selected by using the power reverse equivalent pairing method. In view of the multiple lines being overloaded at the same time, an optimal control node pair screening method based on the weighted osculating value method is proposed. In order to verify the effectiveness of the load-shedding control strategy proposed in this paper considering the output fluctuation of wind farms, an IEEE 10-machine 39-node system is taken as an example. The simulation results are verified by PSASP.

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Multi-Objective Topology Reconfiguration Strategy for Promoting PV Consumption of Distribution systems

Multi-Objective Topology Reconfiguration Strategy for Promot...

引用

International Conference on Power system Technology (POWERCON)

作者： Zhengxing Ren Xiaodong Chu Hua Ye Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education Shandong University Jinan China

The use of intermittent new energy sources is an important part of driving the low-carbon transition of the power system. PV (Photovoltaic) grid-connected increases the volatility of the distribution system. As the basis of power system operation, the topology can directly influence the PV generation and flow distribution. To promote PV consumption, the flexibility of the distribution system topology needs to be fully utilized. A topology optimization strategy is proposed in this paper to cope with the increasing penetration of PV in distribution systems. First, a multi-objective topology reconfiguration model considering PV consumption and power quality is established. After that, an improved multi-objective discrete particle swarm optimization algorithm is used to find the optimal solution set. Finally, gray relational analysis is applied to select the optimal reconfiguration plan. The case study results of the IEEE 33-bus system demonstrate that this strategy can effectively promote PV consumption.

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Optimal Configuration Strategy of Condensers for Suppressing Large-Scale Wind Power Generation Low Voltage Ride Through Short-Time Active Power Impact

Optimal Configuration Strategy of Condensers for Suppressing...

引用

International Conference on Power system Technology (POWERCON)

作者： Xinyu Wei Guofang Zhu Lei Ding Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Jinan China

Given the significant percentage of renewable energy sources in the power grid, the problems of frequency stability and voltage stability are becoming more and more prominent. By configuring the synchronous condenser (SC), it has the capability to furnish dynamic reactive power assistance, thereby enhancing its ability to maintain voltage support and reduce the active power impact caused by low voltage ride through (LVRT) of wind turbine (WT). However, the current power grid lacks an effective configuration strategy for the SC. This paper analyzes the impact of the access of the SC on the voltage support capacity based on the active power current impulse (APCI). The results show that the node with the lowest APCI is the optimal configuration position of the SC after the access of the SC. Based on the above conclusions, this paper proposes an optimal configuration scheme for a SC based on APCI. The simulation results show that the method proposed in this paper can effectively suppress the short-term active power impulse caused by large-scale wind power LVRT and avoid the transformation from local voltage problem to global frequency problem.

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Construction and Application of the Teaching Cloud Platform for Engineering Drawing Course 12

Construction and Application of the Teaching Cloud Platform ...

引用

12th IEEE International Conference on Educational and Information Technology, ICEIT 2023

作者： Xue, Yahong Mu, Haozhi Xue, Lijun Tianjin University of Technology Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin300384 China

ISBN: (纸本)9781665475518

A cloud platform for engineering drawing course teaching was proposed based on cloud station. The cloud station can solve the common problems existed in engineering drawing course, such as the difficulty of teaching, the heavy work of tutorship, the poor teaching effect, the weak spatial imagination of students, as well as the current difficulty to develop the virtual model resource base and the interaction is not strong. The platform uses Solidworks software to build 3D model library, and combines with CADbro's powerful cloud service and 3D file viewing function to realize the interaction and sharing with cloud model by using web browser. At the same time, we choose bilibili, a popular cultural site for teenagers, to release the explanation videos of exercises, and make use of the convenient way to build the cloud station to integrate, release and manage the resources. The platform realizes self-study and self-test at anytime and anywhere on both PC and mobile devices, and fast jumps the corresponding explanation video and cloud virtual model according to the demand. The virtual model in the cloud can be rotated, cut, distance measured, exploded, parts hidden, moved, 2D viewed and so on by touch. The platform is innovative, extensible, interesting and practical, which can greatly enhance the students' enthusiasm for independent learning, and it can be used reference to the development of engineering drawing teaching resources. © 2023 IEEE.

关键词： 3D modeling

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An Approach for Predicting and Compensating the End Deformation of a Heavy Load Robot for Friction Stir Welding 16th

An Approach for Predicting and Compensating the End Deformat...

引用

16th International Federation of Theory of Machines and Mechanisms World Congress, IFToMM WC 2023

作者： Bai, Yujie Liu, Haitao Meng, Shaofei Ma, Yue Yue, Wei Li, Guangxi Xiao, Juliang Wang, Guofeng Ding, Yabin Key Laboratory of Mechanism Theory and Equipment Design of State Ministry of Education Tianjin University Tianjin300072 China Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin300384 China Dongguan University of Technology Dongguan523808 China

ISBN: (纸本)9783031457043

Aiming at solving the problem of insufficient plunge depth by the deformation of friction stir welding robots, this paper presents a method for predicting and compensating for the end deformation of friction stir welding robots. Firstly, the numerical model of FSW is established using DEFORM-3D software, then the axial force on the welding tool is obtained. Subsequently, the robot stiffness model is established based on the screw theory to realize the prediction of robot deformation in the workspace. Finally, a deformation compensation method based on the mirror principle is proposed to realize the compensation of the welding trajectory. Taking the 10 mm AA6061 aluminium alloy FSW as an example, the compensation method proposed in this paper is verified by using computer simulation. The results show that the stiffness model established in this paper can accurately predict the end deformation of the robot. The maximum plunge depth deviation of the compensation method proposed in this paper is reduced by 95.17% compared with the uncompensated case, which proves the effectiveness of the proposed compensation method. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

关键词： Friction stir welding

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