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Optimal layout design for photovoltaic shadow occlusion based on Sketchup and PVsyst

Optimal layout design for photovoltaic shadow occlusion base...

引用

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

作者： Zilong Yu Chunjie Wang Xiangyu Kong Lujie Yu Yangping Shao Hui Jin 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

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

As photovoltaic (PV) systems gain global popularity, effectively minimizing the impact of shading on PV system performance has become a significant design challenge. This paper introduces a systematic and comprehensive shading analysis method that integrates SketchUp and PVsyst software; by utilizing SketchUp for customized 3D modeling and high-precision shading analysis, this method can effectively identify and address shading issues that are difficult to detect using traditional methods, thereby optimizing module layout and enhancing overall system performance. Subsequently, PVsyst is used to simulate and evaluate system efficiency and losses under different conditions. The aim is to improve the accuracy and efficiency of PV system design and to provide a new approach to optimizing photovoltaic system design by combining 3D modeling with performance simulation.

关键词： Photovoltaic systems Economics Analytical models Adaptation models Three-dimensional displays Systematics System performance Layout Software Systems simulation

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The Commonality of Economic Dispatch Models Based on Scenario/Interval

The Commonality of Economic Dispatch Models Based on Scenari...

引用

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

作者： Yishen Wang Renjie Wei Fengbin Sun Ruihan Zhang Tiechui Yao Lan Ren Future Science Park State Grid Smart Grid Research Institute Co Ltd Beijing China Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education State Grid Smart Grid Research Institute Co Ltd Shandong University Jinan China

With the increasing penetration of renewable energy, how to maximize the acceptance of renewable energy on the basis of satisfying the economy security and reliability of the power system is an urgent problem to be solved. In this area, mathematical optimization methods such as robust optimization and stochastic optimization are generally used to construct models based on different uncertainty descriptions. Previous studies have shown that robust optimization has high computational efficiency but conservative results, while stochastic optimization has low computational efficiency but accurate results. Therefore, different studies will choose suitable methods based on the characteristics of the models to be constructed. However, existing studies have not thoroughly discussed whether there is a connection between the two methods. This paper first proposes an economic dispatch model based on scenario considering the admissible region of net load, and introduces a new affine strategy to transform this model into a deterministic form. Secondly, based on further exploration of the characteristics of economic dispatch models based on scenario/interval, the paper concludes that the two models are common when they are sufficiently precise. Finally, the correctness of the conclusion is verified on the IEEE-RTS system.

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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...

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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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Distributed Power Service Restoration Method of Distribution Network with Soft Open Point

Distributed Power Service Restoration Method of Distribution...

引用

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

作者： Shoujing Sun Wei Cong Yaru Sheng Ming Chen Zhen Wei Key Laboratory of Power System Intelligent Dispatch and Control (Shandong University) Jinan China Key Laboratory of Smart Grid of Ministry of Education (Tianjin University) Tianjin China Qingdao Power Supply Company Shandong Electric Power Company State Grid Qingdao China

ISBN: (数字)9781728143033

ISBN: (纸本)9781728143040

Soft open point (SOP) is applied to the power service restoration of the distribution network because of the advantages of flexible control mode and optimizing the operation of the distribution network. Taking advantage of parallel collaborative between independent peer smart terminals unit (STU) in distribution network and information interaction ways of working, distributed power service restoration method of distribution network considering soft open point is put forward, which brings the superiority of SOP in the aspect of power service restoration into full play and avoids the problem of large information collection and calculation in the centralized power service restoration method. Firstly, the structure, control mode and power service restoration model of SOP are introduced, and then the distributed power service restoration method of distribution network with SOP is described, which mainly includes distributed network topology search and the expression and calculation of constraint conditions. Finally, a numerical simulation is carried out to verify the effectiveness of the proposed method.

关键词： Switches Power supplies Network topology Topology Impedance Voltage control Switching circuits

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Carbon Emission Calculation and Low Carbon Transition Path Optimization Method for Electric Power Industry

Carbon Emission Calculation and Low Carbon Transition Path O...

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

作者： Fanfan Yu Xiangyu Kong Shuai Luo Shunyu Wu Yubo Wang Yi Gao 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 Electric Power Company Economic and Technical Research Institute of State Grid Tianjin Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

With economic development, the energy and power industry must balance power supply growth and carbon reduction requirements. To achieve the goal of“double carbon”, the power system needs to be transformed into green and low-carbon, and accurate carbon emission accounting has become a critical support. Due to the significant differences between cities and regions, emission reduction strategies vary. To this end, the article firstly clarifies the carbon emission accounting boundary of power generation enterprises, establishes a carbon emission accounting model for the power industry based on the IPCC inventory method of fuel consumption, and secondly constructs an enterprise low-carbon transition planning model by integrating technological, economic, environmental and other factors, researches and analyzes the path of power generation enterprises to achieve carbon-neutral transition by 2060, and simulates different low-carbon transition scenarios. The results show that achieving carbon neutrality appropriately in advance is beneficial to power generation enterprises to a certain extent, but advancing the process of carbon neutrality too early will lead to soaringcosts. In addition,future policies will push forward the scale of installed energy storage, and enterprises should make good use of technical and resource reserves. The power industry needs to formulate appropriate low-carbon transformation strategies according to its reality to ensure that it realize a win-win situation regarding economic and social benefits while realizing the goal of carbon neutrality.

关键词： Analytical models Costs Green products Carbon neutral Market research Power industry Planning Fuels Power generation Energy storage

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Interactions Between Gas Networks and Microgrids Through Microturbines

Interactions Between Gas Networks and Microgrids Through Mic...

引用

IEEE Power and Energy Society General Meeting

作者： Xiandong Xu Kang Li Hongjie Jia Yuanjun Guo Energy Power and Intelligent Control Cluster Queen's University Belfast Key Laboratory of Smart Grid of Ministry of Education Tianjin University Shenzhen Institute of Advanced Technology Chinese Academy of Sciences

ISBN: (纸本)9781538622131;9781538622124

By supplying thermal and electric energies to host facilities, microgrids with combined heat and power can enhance the resilience of urban energy systems. However, the increasing use of gas-fired distributed generations is pushing gas distribution networks to their operating limits, which may cause significant adverse impacts on microgrids. This paper investigates the interactions between gas networks and microgrids from the viewpoint of integrated energy systems. Four operating modes of microgrids are discussed to describe their connections with external energy networks. A novel model for gas-fired distributed generations, particularly microturbines, is first proposed to capture the interactions between gas networks and microgrids. An integrated system model is then developed to characterize the behaviors of the interrelated gas network and microgrids under different scenarios. Numerical results demonstrate that the variation of microturbine outputs may cause a large pressure drop of the gas network, especially during the transient process of gas flow adjustments. The results also reveal that microgrids can alter the operations among themselves through the accessed gas network.

关键词： Microgrids Load modeling Pipelines Cogeneration Power system dynamics Resilience

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Optimization Method for Flexible Dispatch of Source, grid, Load and Storage Considering Different Photovoltaic Penetration Rates

Optimization Method for Flexible Dispatch of Source, Grid, L...

引用

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

作者： Man Wang Chunjie Wang Xiangyu Kong Haoyang Yao Yuan Niu Chao Wang 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 State Grid Tianjin Electric Power Company Ninghe Power Supply Branch Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

As the scale of grid connection of renewable resources such as wind and solar continues to increase, it is difficult to meet system needs by relying solely on the existing single fast peak-shaving power source. Therefore, this paper aims at the power system scheduling problem under different photovoltaic penetration rates. First, the multi-dimensional characteristics of photovoltaics are modeled. Then, a system scheduling model for the interaction of four types of resources: conventional units, grid elasticity, load response, and energy storage is established. Finally, to minimize the system peak-shaving cost, the optimal system scheduling strategy under different photovoltaic penetration rates is obtained, and the dynamic matching of different photovoltaic penetration rates with the peak-shaving capacity of the power system is completed. A system scheduling strategy that can meet different photovoltaic penetration rates is proposed to ensure the power system’s balance of supply and demand and improve resource utilization.

关键词： Photovoltaic systems Wind Renewable energy sources Supply and demand Power system dynamics Optimal scheduling Dynamic scheduling Systems simulation Resource management Load modeling

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Energy Storage-Based Active Support Strategy for grid Frequency of grid-Configured Offshore Wind Farms

Energy Storage-Based Active Support Strategy for Grid Freque...

引用

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

作者： Baoyi Zhang Xiangyu Kong Jiancun Liu Wen Sun Yue Yang Wenlong Yang 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 Guangdong Power Grid Co. Ltd. Electric Power Research Institute Guangdong China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

With the new energy of large-scale grid-connected, the scale of offshore wind farms is also getting bigger and bigger. Offshore wind turbines are difficult to provide frequency support to the grid when they are fed directly via flex, and the weak grid operation capacity will be poor. Therefore, this paper proposes a grid-connected control method for offshore wind turbines based on virtual synchronous generator (VSG) technology. Enable offshore wind turbines with good frequency dynamic response capability and inertia support capability. At the same time, through the configuration of energy storage devices for wind turbines to provide the energy needed to support the grid, grid-configured offshore wind turbines smoothly realize active support to assist the grid-constructing type wind turbine in providing frequency support. Finally, the effectiveness of the proposed control method is verified by simulation using Matlab/Simulink software.

关键词： Renewable energy sources Time-frequency analysis Wind farms Synchronous generators Software Wind turbines Systems simulation Wind energy conversion Matlab Energy storage

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Robust Integrated optimization of Active Distribution Network Based on System Risk Index

Robust Integrated optimization of Active Distribution Networ...

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IEEE Student Conference on Electric Machines and Systems

作者： Yumin Zhang Haishu Gao Xingquan Ji Qi Liu Yixiao Yu College of Electrical Engineering and Automation Shandong University of Science and Technology Qingdao China Key Laboratory of Smart Grid of Ministry of Education Tianjin University Tianjin China Key Laboratory of Power System Intelligent Dispatch and Control Shandong University Jinan China

ISBN: (数字)9781728156224

ISBN: (纸本)9781728156231

This paper presents a comprehensive distribution robust optimization model based on the distribution network risk index to address the distributional uncertainties of distributed generations (DGs) and loads. To analyze the security of active distribution network (ADN) systematically, a risk assessment method based on improved semi-invariant method and clustering technique is proposed. The risk assessment method is performed on the integrated dynamic reconfiguration and reactive power optimization model. This method can consider the correlation between distributed power sources, and when the injected power is large, the calculation results with higher accuracy can be obtained Case studies on the PG&E 69-bus system verify the robustness and feasibility of the proposed model.

关键词： Uncertainty Power supplies Computational modeling Risk management Indexes Optimization Load modeling

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Self-Healing Optimization of Power grid under High Penetration of New Energy

Self-Healing Optimization of Power Grid under High Penetrati...

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

作者： Zelong Jin Bohan Yang Xiangyu Kong Meiling Zheng Jiancun Liu 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 School of Electrical and Information Engineering Tianjin University Tianjin China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

In order to address the problem of high penetration of new energy into the grid, which brings huge intermittency and volatility to the distribution network, and to overcome the shortcomings of the traditional methods such as genetic algorithm and whale algorithm, which are limited and unable In order to construct the most suitable scenarios, this paper considers a distribution network system containing a significant quantity of distributed photovoltaic energy under a high penetration rate. It then builds a stochastic planning model for self-healing of the distribution network by constructing constraint functions and objective functions. The construction of the constraint function and objective function enables the development of a self-healing stochastic planning model for the distribution network. This model is solved using the scenario tree stochastic method and the improved PSO algorithm. Finally, the feasibility of the self-healing optimization method proposed in this paper is verified by applying it to four typical scenarios to demonstrate the limitations of the traditional method. In brief, the methodologies presented in this paper offer superior alternatives to traditional methods. The optimization solution is more expedient and precise, with a discernible positive impact on the self-repair capability of the distribution network and secure operation.

关键词： Stochastic processes Optimization methods Whales Distribution networks Power system stability Linear programming Stability analysis Power grids Planning Systems simulation

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