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Energy Storage Sizing for IES Considering Carbon Trading and Demand Response 6

Energy Storage Sizing for IES Considering Carbon Trading and...

引用

6th International Conference on power and Energy Applications, ICPEA 2023

作者： Zhang, Lipeng Cao, Kuan Li, Yuwen Gao, Jie Shandong University Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Jinan China State Grid Weihai Power Supply Company Development Planning Department Weihai China

ISBN: (纸本)9798350359053

An optimal energy storage sizing method for integrated energy system (IES) considering carbon trading and demand response is presented in this paper. Firstly, to effectively limit carbon emissions, a reward-penalty laddered carbon trading model is designed to convert carbon emissions into system costs or revenues. Secondly, the integrated demand response (IDR) model for electrical-cold-heat loads is established based on time-of-use price to enhance the operational flexibility and economy. Then, based on these two sub-models, an optimal energy storage sizing model is built to minimize the total life cycle cost including investment, operation and carbon trading cost. Finally, the simulation results indicate that a successful balance between low-carbon and economy can be achieved by the proposed method. © 2023 IEEE.

关键词： Energy storage

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Rolling Scheduling Strategy of Electric Vehicles Based on Dynamic Clustering and Variable Horizon 4

Rolling Scheduling Strategy of Electric Vehicles Based on Dy...

引用

4th International Conference on Artificial Intelligence and Electromechanical Automation, AIEA 2023

作者： Song, Sijin Liu, Yutian Tan, Zukuang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University Shandong Jinan250061 China Hunan Electric Power Company Limited Economic and Technical Research Institute State Grid Changsha410004 China Hunan Key Laboratory of Energy Internet Supply-demand and Operation Changsha410004 China

ISBN: (纸本)9781510666412

The overall load profile tremendously changes due to the charging of abundant electric vehicles (EVs), which brings challenges to the active power balance of distribution network. To achieve smaller fluctuation of the interactive power between the distribution network and the bulk grid, a rolling scheduling strategy of EVs based on dynamic clustering and variable horizon is proposed in this paper. First, a clustering criterion for EVs is formulated to reduce the computational complexity, and the EVs are re-clustered after each scheduling. Then, the scheduling model considering the minimum variance of comprehensive load profile and the minimum charging cost is established, whose purpose is to optimize the charging and discharging plans of the EV clusters. The scheduling horizon is the variable continuous period, which is between the starting time of the current execution horizon and the departure time of each cluster. Finally, the simulation results of modified IEEE 33-bus system verify that, the optimal EV charging and discharging plan can perfectly coordinate with the photovoltaic output profile while maximizing user satisfaction, which significantly reduces the peak-valley difference of the equivalent load. © 2023 SPIE.

关键词： Electric power distribution

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Simulation Research on Primary Frequency Regulation Coordination control Strategy of Hybrid Wind-PV-ES power Station Based on AGC 12

Simulation Research on Primary Frequency Regulation Coordina...

引用

12th Annual Meeting of CSEE Study Committee of HVDC and power Electronics, HVDC 2023

作者： Li, Shengnan Hu, Yun He, Xin Zhu, Yihua He, Tingyi Luo, Chao Deng, Can Zeng, Guanming Su, Mingzhang Yunnan Electric Power Research Institute Kunming China National Energy Power Grid Technology R&D Centre Guangzhou China State Key Laboratory of HVDC Electric Power Research Institute CSG Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China CSG Key Laboratory for Power System Simulation Electric Power Research Institute China Southern Power GridGuangzhou China

ISBN: (纸本)9781839539848

With the increase of wind and solar renewable energy penetration in power system, the frequency control ability of power system completely depending on traditional power supply has weakened. This actuality requires that renewable energy stations should be equipped with a certain amount of energy storage to improve the primary frequency control ability. This paper considers the fast response ability and flexible control of energy storage for both charging and discharging, as well as its unique frequency response characteristics. Firstly, the control characteristics of the primary frequency regulation of the hybrid wind-solar-storage power station(Wind-PV-ES) are analyzed. By improving the automatic generation control(AGC) strategy of the hybrid Wind-PV-ES power station, a coordinated control strategy for the primary frequency regulation of the hybrid Wind-PV-ES power station is proposed for different frequency ranges based on the improved AGC control. After the primary frequency regulation action, the energy storage output is given priority control before wind and solar. When the energy storage active margin is insufficient, use the frequency regulation capacity of wind and photovoltaic power system to improve the primary frequency regulation capacity of the hybrid Wind-PV-ES power station. The control strategy proposed in this paper can improve the primary frequency regulation capability of renewable energy station. Finally, the paper verifies the effectiveness of the proposed control strategy through simulation. © The Institution of Engineering & Technology 2023.

关键词： Energy storage

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Remote closed-loop test method of safety and stability control system based on step-by-step implementation 2

Remote closed-loop test method of safety and stability contr...

引用

2nd International Conference on Digital Society and intelligent Systems, DSInS 2022

作者： Zhao, Wei Hou, Yuqiang Chen, Xiong Xue, Feng Chen, Wei Chen, Luofei Nanjing211106 China State Key Laboratory of Smart Grid Protection and Control Nanjing211106 China PONOVO Power Co. Ltd. Beijing100000 China

ISBN: (纸本)9781510663244

The safe operation of the safety stability control system is an important means to ensure the safe and stable operation of AC and DC power grids. Aiming at the shortage of existing test methods that cannot perform closed-loop testing of field safety stability control systems, a remote closed-loop test method for safety stability control systems based on step-by-step implementation is proposed. Using the simulation results of real-time digital simulation system (RTDS) as the signal source, a remote test platform architecture integrating laboratory and field safety and stability control devices is designed, key modules such as platform management system, test master and test terminal are developed, specific solutions are given for platform communication, and a remote closed-loop test procedure is formulated. Finally, a pilot application is carried out with an actual power grid security and stability control system as an example, and the effectiveness of the proposed method is verified. © 2023 SPIE.

关键词： Real time systems

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Research on 220kV Spare power Automatic Switching Equipment Standardized Application of Local functions Based on Real-Time Simulation∗ 5

Research on 220kV Spare Power Automatic Switching Equipment ...

引用

5th IEEE International Electrical and Energy Conference, CIEEC 2022

作者： Huang, Zhida Wu, Wencong Cai, Haiqing Zhu, Yihua Huang, Libin Chang, Dongxu State Key Laboratory of Hvdc Electric Power Research Institute Csg National Energy Power Grid Technology R&d Centre Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Csg Key Laboratory for Power System Simulation Guangzhou China

ISBN: (数字)9781665411042

ISBN: (纸本)9781665411042

Currently, the power grid is carrying out the standardized design and application of 220kV spare power automatic switching equipment. It is more difficult to carry out the on-site standby automatic switching function test in the actual power grid. The power supply department urgently needs a simulation environment that can truly simulate the actual power grid to support the development of this functional test. Real-time simulation has the ability to carry out on-site automatic transfer function tests in terms of technical feasibility. To verify its effectiveness, this paper built a standardized closed-loop test system for 220kV spare power automatic switching equipment based on real-time simulation. A number of tests have been carried out for the automatic switch-on function of on-site equipment, and the device action events on the actual site have been inverted. The test results show that the established RTDS real-time simulation model has the ability to simulate the actual 220kV power grid. It has been verified that the action logic of the standby automatic input device in various modes meets the requirements of the standard specification, which strongly supports the standardized application of the 220kV spare power automatic switching equipment function of the power grid. © 2022 IEEE.

关键词： Switching

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Mechanism and Influencing Factor Analysis of High Frequency Oscillation in PMSG-Based Wind Farm With grid-Connected System 6

Mechanism and Influencing Factor Analysis of High Frequency ...

引用

6th IEEE International Conference on Energy Internet, ICEI 2022

作者： Luo, Chao Zhu, Yihua Huang, Libin Yu, Jiawei Electric Power Research Institute China Southern Power Grid State Key Laboratory of Hvdc Guangzhou China National Energy Power Grid Technology R&d Centre Guangzhou China Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System Guangzhou China

ISBN: (纸本)9781665493277

Under the background of vigorously developing wind power, permanent magnet synchronous generator (PMSG)-based wind turbines have been widely used in offshore wind farms. However, the high frequency oscillations (HFOs) of PMSG-based wind farms with grid-connected system have occurred frequently in recent years, which have a bad impact on the safe and stable operation of the power system. And current researches only preliminarily reveal the mechanism, which are lacking in discussion on the key factors involved in HFOs. This paper establishes the high frequency impedance model of PMSG-based wind farm with grid-connected system. To identify the key factors involved in HFO, the impedance sensitivity method is used to obtain the quantitative relationship of the influence of each parameter on HFO. It can be concluded that the control delay, LCL filter parameters, collector lines parameters have the greatest influence on the HFO of the wind farm, but the characteristic of negative resistance caused by control delay is the root cause of HFO. Finally, this paper establishes the model of PMSG-based wind farm with grid-connected system on the PSCAD/EMTDC and verifies the correctness of the theoretical analysis. The conclusions of this paper can provide a reference basis for the mitigation strategies of HFOs. © 2022 IEEE.

关键词： Permanent magnets

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Partial Discharge Detection Method for Gas Insulated Switchgear Based on Acoustic Array 18th

Partial Discharge Detection Method for Gas Insulated Switchg...

引用

18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Liang, Liang Yu, Liangliang Jiapaer, Aizezijiang Ji, Changwei Shang, Wenming Gao, Pengyue Lei, Zhipeng Zheng, Lijun Urumqi Power Company of State Grid Xinjiang Electric Power Co. Ltd. Urumqi830000 China Shanxi Key Laboratory of Mining Electrical Equipment and Intelligent Control College of Electrical and Power Engineering Taiyuan University of Technology Taiyuan030024 China

ISBN: (纸本)9789819714278

Partial discharge detection is of great significance for the stable operation of Gas Insulated Switchgear equipment. The common methods for partial discharge detection currently include pulse current detection, chemical detection, optical detection, ultra-high frequency detection, ultrasonic detection, and infrared thermal imaging. Among them, the ultrasonic method is a non-destructive monitoring method. This paper proposes the use of a microphone array consisting of 6 MEMS microphones to achieve the localization of partial discharge. The main content of this paper is to select the microphone array with the best localization performance for partial discharge detection of Gas Insulated Switchgear equipment. Three different microphone arrays were constructed in this work, namely, the one-dimensional linear array, the two-dimensional rectangular array, and the two-dimensional circular array. Partial discharge detection experiments were carried out using different microphone arrays, and the results show that the two-dimensional circular array has better localization performance. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Partial discharges

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The Analysis of AC Faults in AC/DC Hybrid Distribution System with SOP 1

引用

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

作者： Jin, Peng Wu, Tonghua Wu, Hai Hu, Guo Shen, Qian NARI Group Co. Ltd. State Key Laboratory of Smart Grid Protection and Operation Control Nanjing211000 China School of Automation Nanjing University of Science and Technology Nanjing210094 China

ISBN: (数字)9789819900633

ISBN: (纸本)9789819900626

AC/DC hybrid distribution system becomes increasingly necessary for integration of distributed renewable energy resources (DER) and management of carbon emissions. However, the fault characteristics of AC/DC hybrid power distribution network are vastly different from traditional AC distribution system for their varied structures. Considering the strong capability in controlling power flow and fault current of soft open point (SOP), this paper establishes the model of AC fault sequence network of hybrid distribution system with SOP, in which positive and negative separation control strategy is adopted by the converter. The model includes traditional AC equivalent network, DC equivalent network, back-to-back converter and its control system, based on which the AC fault characteristics in AC/DC hybrid distribution system are analyzed. Through utilizing PSCAD/EMTDC, different simulation scenarios are carried out to verify the effectiveness of AC fault modeling and analysis method of AC/DC hybrid power distribution system with SOP, thus providing a theoretical basis for AC side protection scheme of AC/DC hybrid system. © state grid Electric power Research Institute 2023.

关键词： Electric load flow

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Reliability Assessment of Battery Energy-Storage Module Based on Correlation Analysis 7

Reliability Assessment of Battery Energy-Storage Module Base...

引用

7th Asia Conference on power and Electrical Engineering, ACPEE 2022

作者： Xiong, Jiali Cai, Qiang Dai, Liyu Li, Zhicheng Lin, Guodong Deng, Chaoping Sun, Jin Electric Power Research Institute State Grid Fujian Electric Power Co. Ltd Fujian Key Laboratory of Protection and Operation Control for Smart Grid Fuzhou China Fuzhou University College of Electrical Engineering and Automation Fuzhou China

ISBN: (纸本)9781665418195

The battery energy storage technology can be flexibly configured and has excellent comprehensive characteristics. In addition to considering the reliability of the battery energy storage power station when it is connected to the grid, the reliability of the energy storage power station itself should also be considered. The reliability model based on Copula theory was established for battery module, and the reliability of energy storage module was analyzed according to the basic structure of energy storage modules. In this paper, the example analysis is based on the existing simulation model of energy storage module. Then the reliability of energy storage module in the next 20 years is predicted considering the different correlations between battery clusters. © 2022 IEEE.

关键词： Reliability analysis

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A power grid Accident Early Warning Method Considering Multi-factor Coupling 17th

A Power Grid Accident Early Warning Method Considering Multi...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Hu, Liangping Cong, Wei Xu, Anxin Wei, Zhen Han, Aoyang An, Shuhuai Key Laboratory of Power System Intelligent Dispatch and Control Shandong University Jinan Shandong China Rizhao Power Supply Company Shandong Electric Power Company State Grid Shandong Rizhao China Qingdao Power Supply Company Shandong Electric Power Company State Grid Shandong Qingdao China

ISBN: (纸本)9789819903566

The power grid is an important infrastructure for the development of the national economy and society. It is of great significance to carry out research on the early warning method of power grid accidents to ensure the safe and stable operation of the power grid. In this paper, a power grid accident early warning method considering multi-factor coupling is proposed, based on conditional deep convolutional generative adversarial networks to generate minority class samples to achieve dataset balance. The depth features of the two-dimensional input samples were extracted by using a deep convolutional autoencoder network for the three types of disaster factors: meteorology, equipment and geographical environment. A deep self-encoding network is constructed, and the deep feature splicing of three types of disaster-causing factors is used as input, and a softmax classifier is added to the output layer of the network to construct a multi-factor coupled power grid accident early warning model to realize the prediction and early warning of power grid accidents. Numerical simulations verify the effectiveness and accuracy of the method proposed in this paper. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Numerical methods

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