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2023 International Conference on power system Technology, powerCon 2023

作者： Wang, Xuan Zhao, Qianyu Wang, Shouxiang Tianjin University Key Laboratory of Smart Grid of Ministry of Education Tianjin Key Laboratory of Power System Simulation and Control Tianjin China

ISBN: (纸本)9798350300222

Agricultural multi-energy park (AMEP) is an essential pathway for upgrading and transforming traditional agriculture, and the utilization of renewable energy can contribute to its sustainable development. In this context, this paper proposes an optimal scheduling method for AMEP with combined wind-solar-biomass energy supply. The biomass energy contained in waste from the user side can be reused and combined with wind and solar energy to achieve a diversified supply of renewable energy. Besides, a biogas heat-electricity cogeneration with adjustable thermoelectric ratio is introduced, enhancing the flexibility of electricity and heating supply for AMEP. In addition, an adder carbon tax mechanism is considered to incentivize energy conservation and emissions reduction of AMEP. simulation results demonstrate that the proposed optimal scheduling model can more effectively utilize renewable energy, leading to significant advantages in enhancing the flexibility, economy, and low carbon of AMEP. © 2023 IEEE.

关键词： Biomass

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Optimal Scheduling for Multi-energy system Considering Coupling of Molten Medium Hydrogen Production and Pipeline Energy Storage 3

Optimal Scheduling for Multi-energy System Considering Coupl...

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3rd New Energy and Energy Storage system control Summit Forum, NEESSC 2023

作者： Wang, Xuan Zhao, Qianyu Wang, Shouxiang Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin Key Laboratory of Power System Simulation and Control Tianjin China

ISBN: (纸本)9798350309348

Existing hydrogen production technologies always have weakness of large carbon emission, and there are still many research gaps in coupling with multi-energy flow. To this end, this paper proposes an optimal scheduling model for multi-energy system (MES) considering coupling of molten medium hydrogen production (mmH2P) and pipeline energy storage (PES). The mmH2P is introduced into MES to achieve the in-situ green conversion of gas and the zero-carbon-emission hydrogen production while obtaining solid carbon. Further, a Refined PtGmmH2P mode is proposed combining mmH2P, power-to-gas and hydrogen storage. Besides, the PES due to different transmission inertia of energy flows is considered, and its coupling coordination promotion with Refined PtG-mmH2P is further analyzed. Case study proves that the proposed scheduling model of MES can achieve the win-win of economy, low carbon and high renewable energy consumption rate. ©2023 IEEE.

关键词： Pipelines

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Dynamic Economic Scheduling with Self-Adaptive Uncertainty in Distribution Network Based on Deep Reinforcement Learning

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Energy Engineering 2024年第6期121卷 1671-1695页

作者： Guanfu Wang Yudie Sun Jinling Li Yu Jiang Chunhui Li Huanan Yu He Wang Shiqiang Li State Grid Liaoning Electric Power Co. Ltd.Liaoyang Power Supply CompanyLiaoyang111000China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012China Jilin Northeast Electric Power University Science and Technology Development Co. Ltd.Jilin132012China

Traditional optimal scheduling methods are limited to accurate physical models and parameter settings, which aredifficult to adapt to the uncertainty of source and load, and there are problems such as the inability to make dynamicdecisions continuously. This paper proposed a dynamic economic scheduling method for distribution networksbased on deep reinforcement learning. Firstly, the economic scheduling model of the new energy distributionnetwork is established considering the action characteristics of micro-gas turbines, and the dynamic schedulingmodel based on deep reinforcement learning is constructed for the new energy distribution network system with ahigh proportion of new energy, and the Markov decision process of the model is defined. Secondly, Second, for thechanging characteristics of source-load uncertainty, agents are trained interactively with the distributed networkin a data-driven manner. Then, through the proximal policy optimization algorithm, agents adaptively learn thescheduling strategy and realize the dynamic scheduling decision of the new energy distribution network ***, the feasibility and superiority of the proposed method are verified by an improved IEEE 33-node simulationsystem.

关键词： Self-adaptive the uncertainty of sources and load deep reinforcement learning dynamic economic scheduling

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A Disturbance Localization Method for power system Based on Group Sparse Representation and Entropy Weight Method

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Energy Engineering 2024年第8期121卷 2275-2291页

作者： Zeyi Wang Mingxi Jiao Daliang Wang Minxu Liu Minglei Jiang He Wang Shiqiang Li Changchun Power Supply Company State Grid Jilin Electric Power Co.Ltd.Changchun130021China Economic and Technical Research Institute State Grid Jilin Electric Power Co.Ltd.Changchun130022China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Northeast Electric Power UniversityJilin132012China

This paper addresses the problem of complex and challenging disturbance localization in the current power system operation environment by proposing a disturbance localization method for power systems based on group sparse representation and entropy weight *** different electrical quantities are selected as observations in the compressed sensing *** entropy weighting method is employed to calculate the weights of different observations based on their relative disturbance ***,by leveraging the topological information of the power system and pre-designing an overcomplete dictionary of disturbances based on the corresponding system parameter variations caused by disturbances,an improved Joint Generalized Orthogonal Matching Pursuit(J-GOMP)algorithm is utilized for *** reconstructed sparse vectors are divided into three *** at least two parts have consistent node identifiers,the node is identified as the disturbance *** the node identifiers in all three parts are inconsistent,further analysis is conducted considering the weights to determine the disturbance *** results based on the IEEE 39-bus system model demonstrate that the proposed method,utilizing electrical quantity information from only 8 measurement points,effectively locates disturbance positions and is applicable to various disturbance types with strong noise resistance.

关键词： Disturbance location compressed sensing group sparse representation entropy power method GOMP algorithm

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Optimal Scheduling of Pumped Storage power Station with Double-Fed Variable Speed Unit Based on Reservoir Regional Operation Strategy 4

Optimal Scheduling of Pumped Storage Power Station with Doub...

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4th Asia-Pacific Conference on Communications Technology and Computer Science, ACCTCS 2024

作者： Ma, Yuhan An, Yining Ge, Xiaohui Zhao, Bo State Grid Zhejiang Electric Power Co. Ltd. Research Institute Zhejiang Hangzhou China Northeast Electric Power University Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Jilin Jilin China

ISBN: (纸本)9798350359985

The conventional pumping unit lacks the ability to continuously adjust input power during pumping operations, and exhibits poor adaptability when integrating new energy sources into the grid. In this study, we propose a novel 'domain operation' strategy that allocates resources based on real-time reservoir conditions across all levels of hydropower stations, while optimizing operations through the implementation of doubly fed units. © 2024 IEEE.

关键词： Hydroelectric power

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Modeling and Parameter Sensitivity Analysis of Inductor Used Multi-material Powder Core

Modeling and Parameter Sensitivity Analysis of Inductor Used...

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International Conference on Wireless power Transfer, ICWPT 2022

作者： Zhang, Yun Zheng, Zedong Li, Chi Zhou, Qing State Key Laboratory of Control and Simulation of Power System and Generation Equipment Tsinghua University Beijing100084 China

ISBN: (纸本)9789819906307

This paper proposes a novel inductor which combines multiple powder cores with different material properties, which can achieve optimization of multiple performance parameters. For inductor which combines multiple powder cores with different material properties and flat copper wire, the model of DC superimposition inductance, the model of core loss, the model of winding loss and the model of thermal resistor network are derived respectively. These models apply to all different kinds of powder cores, core sizes, wire sizes and winding arrangements. According to the above models, the impact of design parameters on performance parameters is analyzed, in which the design parameters include powder core material, core size, air gap, wire size and number of turns while the performance parameters include volume, power loss and temperature rise of the inductor. The analysis can provide theoretical basis for design and optimization of inductor. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Inductance

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Flexible linear clock-based distributed self-triggered active power-sharing secondary control of AC microgrids

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Global Energy Interconnection 2024年第6期7卷 786-797页

作者： Yulin Chen Xing Huang Guangxin Zhi Shaohua Yang Hongxun Hui Donglian Qi Yunfeng Yan Fengkai Gao Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology Ministry of Education(Northeast Electric Power University)Jilin132012P.R.China Hainan Institute Zhejiang UniversitySanya572000P.R.China College of Electrical Engineering Zhejiang UniversityHangzhou310027P.R.China State Key Laboratory of Internet of Things for Smart City University of MacaoMacao999078P.R.China

Traditional active power sharing in microgrids,achieved by the distributed average consensus,requires each controller to continuously trigger and communicate with each other,which is a wasteful use of the limited computation and communication resources of the secondary *** enhance the efficiency of secondary control,we developed a novel distributed self-triggered active power-sharing control strategy by introducing the signum function and a flexible linear *** continuous communication–based controllers,the proposed self-triggered distributed controller prompts distributed generators to perform control actions and share information with their neighbors only at specific time instants monitored by the linear ***,this approach results in a significant reduction in both the computation and communication ***,this design naturally avoids Zeno ***,a modified triggering condition was established to achieve further reductions in computation and *** simulation results confirmed that the proposed control scheme achieves distributed active power sharing with very few controller triggers,thereby substantially enhancing the efficacy of secondary control in MGs.

关键词： Active power sharing Distributed secondary control Self-triggered mechanism AC microgrid control efficiency

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Research on Distributed Photovoltaic Marketization Trading Model Considering Auxiliary Services 4

Research on Distributed Photovoltaic Marketization Trading M...

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4th International Conference on Energy Engineering and power systems, EEPS 2024

作者： Meng, Tao Li, Dexin Li, Chenggang Wang, Wei Electric Power Research Institute State Grid Jilin Electric Power Co. Ltd. Jilin Province Changchun130000 China The Key Laboratory of Modern Power System Simulation and Control Ministry of Education Jilin Province Jilin132012 China

ISBN: (纸本)9798350366914

Constrained by the features of distributed photovoltaic (PV) power generation, as more distributed photovoltaic systems connect to the power grid, the demand for auxiliary services resulting from PV integration into the distribution network will significantly increase. Thus, when conducting market-oriented transactions, it becomes essential to consider not only the electricity market but also the auxiliary services required for distributed photovoltaics. This paper discusses the future distributed photovoltaic trading platform, price models, and the pricing and allocation of auxiliary services, aiming to achieve a virtuous cycle in distributed photovoltaic market-oriented trading. Furthermore, an example of distributed photovoltaic auxiliary services is provided, demonstrating that neglecting auxiliary services may allow distributed photovoltaic transactions to proceed, but they may fail to cover the cost of auxiliary services. Hence, the consideration of auxiliary services for distributed photovoltaics is crucial when organizing market-oriented transactions. © 2024 IEEE.

关键词： DC distribution systems

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Optimal Scheduling of Integrated Energy systems in Low-Carbon Communities Considering Flexibility of Resources and Segmental control of Solid Oxide Fuel Cells

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Journal of modern power systems and Clean Energy 2024年第3期13卷 915-927页

作者： Mao Yang Yuxin Wang Jinxin Wang Dongxu Liu Weihang Xu Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education Northeast Electric Power University Jilin China

To address the strong thermoelectric coupling of the combined heat and power (CHP) units, the low utilization rate of energy storage, and the underexploitation of load-side resource flexibility in integrated energy systems (lESs)., this paper proposes an optimal scheduling model of an IES in low-carbon communities considering flexibility of resources and the segmental control of solid oxide fuel cells (SOFCs). Firstly., by replacing the gas turbine (GT) in the CHP unit with an SOFC array to reduce carbon emissions and simultaneously weakening the thermoelectric coupling of the CHP unit, the segmental control method is used to control the SOFC array to improve the overall efficiency of the CHP unit. Secondly, coupled interactions among different types of energy storage equipments are mobilized through the integrated energy storage system to make full use of the remaining space in the heat and natural gas storage tanks. Finally, load-side flexible resources are utilized by considering transferable, substitutable, and heat loads, taking into account the thermal inertia of the building and categorizing rooms based on floors, orientations, and room area. Additionally., different user characteristics are characterized, and the flexible resources of building heating periods in northern cities in China are tapped in depth according to the actual factors. Compared with the traditional model, the optimal scheduling model proposed in this paper can reduce the wind abandonment rate and the carbon emission of community-integrated energy system (CIES) by 4.54% and 70.63%, respectively, and increase the utilization rate of heat and natural gas storage tanks by 12.34 % and 30.52%., respectively, and lower the total cost by ¥2183.6 under the premise of ensuring user comfort during energy consumption, which promotes the economic and low-carbon operation of the CIES.

关键词： Energy storage Cogeneration Wind power generation Buildings Resistance heating Heating systems Turbines

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Coordinated optimal configuration scheme of wind-solar ratio and energy storage considering wind-solar complementary characteristics 6

Coordinated optimal configuration scheme of wind-solar ratio...

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6th International Conference on Energy, power and Grid, ICEPG 2024

作者： Yang, Xiuyu Li, Zhiwen Peng, Jian Miu, Gang Yuan, Shaowei Zhu, Zhengyin Northeasst Electric Power University Key Laboratory of Modern Power System Simulation Control and New Green Energy Technology Ministry of Education Jilin China State Grid Xinjiang Power Supply Company State Grid Urumqi Power Supply Company Urumqi City China

ISBN: (纸本)9798350377798

This study proposes a collaborative optimization configuration scheme of wind-solar ratio and energy storage based on the complementary characteristics of wind and light. On the premise of maintaining the stability of the wind-solar hybrid power generation system, the optimal allocation model of wind-solar ratio and energy storage considering the complementary characteristics of wind-solar is established with the minimum total cost of planning. At the same time, three indicators of power fluctuation index, wind-solar permeability and new energy abandonment rate are proposed to evaluate the scheme. © 2024 IEEE.

关键词： Windmill

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