- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Economic and Resilience Benefit Analysis of Incorporating Battery Storage to Photovoltaic Array Generation
摘要： Power systems with photovoltaic (PV) arrays combined with battery backup storage are becoming increasingly used because of their capability of working in power island mode, especially during grid outages. The problem is to decide the optimal battery sizes for PV + battery systems with given solar array sizes, from both power supply reliability and economical perspectives. An optimization method based on the simulation of system operation during grid interruption is developed to investigate the effects of battery size on system output reliability level of meeting load demand with minimum cost. Case studies are conducted for validation according to actual solar irradiation data, load profiles and realistic power interruption statistics. Sensitivity analysis is also performed to explore how system total cost affects islanding capability of a PV + battery system to supply energy to facilities. The finding shows that the decline of battery price not only reduces the lowest system total cost but also improves islanded system generation reliability. The proposed methodology for optimizing battery capacity added to PV array systems can make them grid-outage resilient and economically viable, which can be utilized as a decision-making tool for future PV + battery system expansion.
关键词： Resilient power systems,Resilience,Photovoltaic power island system,Battery backup systems,System design optimization,Solar power storage
更新于2025-09-10 09:29:36
-
[Lecture Notes in Electrical Engineering] Proceedings of 2018 Chinese Intelligent Systems Conference Volume 528 (Volume I) || Control Strategy of PV-Hybrid Energy Storage Device Based on Household Load
摘要： In order to improve the stability and economy of roof photovoltaic system. The frequency distribution of photovoltaic power can be obtained by using Hilbert-Huang transform (HHT), and a boundary frequency algorithm is proposed to determine the frequency of photovoltaic power generation. Then, the roof photovoltaic-hybrid energy storage control model based on household load is constructed, and the model is solved by LINGO software. Data analysis and comparison show that under the condition of full life cycle and real time price of photovoltaic power generation, user economy is superior to that of fixed price condition. The effectiveness of the proposed model coordination control strategy is verified by the user’s economy.
关键词： Hybrid energy storage,Maximum power point tracking,Capacity configuration,Energy management,Control strategy,Photovoltaic power generation
更新于2025-09-10 09:29:36
-
[IEEE 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Tangier (2017.12.4-2017.12.7)] 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Data Driven Model for Short Term PV Power Forecasting using Least Square Support Vector Regression
摘要： This paper presents an off-line model for forecasting photovoltaic power. This model is suitable to provide short-term forecasts without the need of Numerical Weather predictions data. This is interesting especially for power system operators as well as for individuals who do not have access to weather data and forecasts. In this paper we investigate the influence of an additional input parameter to the accuracy of an already tested and validated offline model. To rectify the performances of our models we will compare their performances with a usual persistent model. The results of simulation shows the benefits of adding this input to improve the accuracy of our PV forecasting model.
关键词： Photovoltaic Power,Forecasting,Least Square Support Vector Regression,Smart Grid,Grid Management,Machine Learning
更新于2025-09-10 09:29:36
-
Research on a novel power quality conditioner with PV for electrified railway
摘要： With the fast development of electric railway, harmonics and reactive power problems caused by electric locomotive load remains to be further improved. This paper presents a novel power quality conditioner based on multiple H-bridges with photovoltaic power. The proposed structure utilizes a hybrid cascaded 81-level converter in series with a PWM converter to achieve a high-voltage and large-capacity power quality conditioner, and photovoltaic power connects with the DC bus side of the hybrid cascaded 81-level converter to reduce active consumption for electric railway. The fundamental voltage of the hybrid cascaded 81-level converter is controlled by the traction network. The active component of the PWM converter output current is controlled by DC link voltage of the hybrid cascaded 81-level converter, and its reactive and harmonic components are controlled by reactive and harmonic currents from the load. The system structure, working principle and control method of the novel power quality regulator are analysed. A single-phase traction system simulation model is built in MATLAB/Simulink. Simulation results are presented to verify the feasibility and effectiveness of the proposed PQC.
关键词： PWM converter,power quality conditioner,electrified railway,photovoltaic power,hybrid cascaded 81-level converter
更新于2025-09-09 09:28:46
-
[IEEE 2018 14th International Conference on Power Electronics (CIEP) - Cholula, Puebla, Mexico (2018.10.24-2018.10.26)] 2018 14th International Conference on Power Electronics (CIEP) - DC-AC-AC Converter for PV Plant in Medium Voltage Grid-Connected Systems
摘要： Large-scale PV plants (hundreds of MW) are a reality and are being used to generate high-power levels in medium-voltage (MV) utilities. To achieve this goal, some new power electronics systems based on medium-frequency AC-links (MFAC) and multilevel output configurations have been proposed to interfacing with the MV utility. Most of these systems rectify the MFAC voltage, generating a DC bus and then invert the DC voltage to generate a line frequency AC voltage. This paper presents a three-phase cascaded multilevel converter topology with reduced-energy conversion stage and multiples AC medium-frequency (MF) links. The proposed converter is composed by modules connected in cascaded. Each module has three conversion stages: input converter (DC-AC), isolation stage (medium-frequency transformer) and output converter (AC-AC). In order to validate the proposed topology simulations of a 100 kW system are performed, taking into account balanced and unbalanced DC source cases. The proposed system is validated through a 1.5 kW single-phase five-level laboratory prototype.
关键词： AC-links,medium-frequency magnetic link,photovoltaic power systems
更新于2025-09-04 15:30:14