Energy Efficiency Evaluation Method for Photovoltaic-Storage-Charge Integrated Power Station
A charging station and solar storage technology, which is applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of lack of energy efficiency evaluation indicators and methods for solar storage charging stations, etc.
Active Publication Date: 2022-04-05
SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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[0004] The current research focuses on the comparison of AC and DC energy efficiency in industrial and commercial, civil and micro-grid scenarios, and there is a lack of energy efficiency evaluation indicators and methods for AC and DC power distribution systems for optical storage charging stations.
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[0064] In the existing technology, the current research focuses on the comparison of AC and DC energy efficiency in industrial and commercial, civil and micro-grid scenarios, and there is a lack of energy efficiency evaluation indicators and methods for AC and DC power distribution systems used in optical storage charging stations. Therefore, the establishment of energy efficiency evaluation indicators and calculation methods for solar-storage charging stations under the same standard is conducive to the principal component analysis of losses, mining weak links and making improvements, which is of great importance for the planning and operation of solar-storage charging stations and low-voltage DC power distribution systems Guiding significance.
[0065] 1. Converter loss evaluation model;
[0066] According to the working principle of the converter, its loss is related to the passing power, that is, the efficiency of the converter is a function related to the passing power, d...
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The invention discloses a method for evaluating the energy efficiency of a power station integrating optical storage and charging, comprising the following steps: establishing a converter loss evaluation model; establishing a line loss evaluation model; establishing an instantaneous energy efficiency evaluation model; The average transmission efficiency of the system under line loss; after the calculation of the energy consumption of each branch of the optical storage charging station is completed, the system-level energy consumption and energy efficiency indicators can be obtained, and then the average energy efficiency evaluation index of the optical storage charging station system is calculated; Transformation is performed separately Comparative analysis of device loss and line loss, and energy efficiency evaluation. The present invention aims at the AC and DC power distribution forms of the optical storage charging station, analyzes the composition and evaluation method of the system loss, combines the data of a solar storage charging station in the south and the efficiency of the converter, and conducts a case analysis to analyze the energy efficiency of the integrated optical storage charging station. Analyze and evaluate. Optimizing and improving the energy efficiency of solar-storage charging stations is of great significance for building a clean, low-carbon, safe and efficient energy system.
Description
technical field [0001] The invention belongs to the technical field of AC and DC power distribution, and in particular relates to an energy efficiency evaluation method for an integrated power station with optical storage and charging. Background technique [0002] Driven by the global energy security crisis and serious environmental pollution, electric vehicles have developed rapidly in the world in recent years. It is estimated that by 2030, the proportion of electric vehicles in my country will reach 50%, and the planning of charging stations has become a key issue restricting the development of electric vehicles. one. In order to make full use of land and renewable energy resources, some scholars have proposed the idea of using photovoltaics and energy storage to supply energy for charging stations, building an integrated solar-storage-charging power station, using photovoltaic power generation to supply power to charging piles during the day, and storing excess electri...
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IPC IPC(8): H02J3/38H02J3/28G06Q10/06G06Q50/06
CPCH02J3/381H02J3/28G06Q10/0639G06Q50/06H02J2203/20H02J2300/24Y04S10/50Y02P90/82Y02E10/56Y02E40/70
Inventor 李海波雷一杨超江坷滕熊天龙包维瀚
Owner SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV