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[IEEE 2018 IEEE Industry Applications Society Annual Meeting (IAS) - Portland, OR, USA (2018.9.23-2018.9.27)] 2018 IEEE Industry Applications Society Annual Meeting (IAS) - An Approach For Net-Load Management To Reduce Intermittency And Smooth The Power Output On Distribution Feeders With High PV Penetration
摘要： This paper presents a novel ramp rate control and active power smoothing methodology for net-load profiles in large power distribution networks where high Photo Voltaic (PV) penetration levels exist. The novelty is to break large systems into virtual local net-load locations where energy storage systems (ESSs) technologies are installed to mitigate severity of the anticipated shape of system net-loads. The proposed methodology uses Fast Fourier signal Transformation (FFT) to generate reference curves that adequately fit ESS active and reactive power capabilities. Then, a least square minimization (LSM) technique is applied taking both ancillary applications into consideration as well as maintaining State of Charge (SoC) within limits for ESS to function efficiently throughout the day. The methodology is applied on a sample aggregated US power distribution system and a 8000 nodes US power grid using CYMEDist simulation platform. Results show significant level of net-load ramp rate reduction as well as smoothing of fast fluctuations due to both PV intermittency and load changes.
关键词： PV Power Generation,Active Power Management,Net-load Smoothing,Ramp Rate Control
更新于2025-09-23 15:22:29
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Energy Storage Requirements for PV Power Ramp Rate Control in Northern Europe
摘要： Photovoltaic (PV) generators suffer from fluctuating output power due to the highly fluctuating primary energy source. With significant PV penetration, these fluctuations can lead to power system instability and power quality problems. The use of energy storage systems as fluctuation compensators has been proposed as means to mitigate these problems. In this paper, the behavior of PV power fluctuations in Northern European climatic conditions and requirements for sizing the energy storage systems to compensate them have been investigated and compared to similar studies done in Southern European climate. These investigations have been performed through simulations that utilize measurements from the Tampere University of Technology solar PV power station research plant in Finland. An enhanced energy storage charging control strategy has been developed and tested. Energy storage capacity, power, and cycling requirements have been derived for different PV generator sizes and power ramp rate requirements. The developed control strategy leads to lesser performance requirements for the energy storage systems compared to the methods presented earlier. Further, some differences on the operation of PV generators in Northern and Southern European climates have been detected.
关键词： Photovoltaic generators,energy storage systems,power fluctuations,Northern European climate,ramp rate control
更新于2025-09-23 15:21:01
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Sizing and operation of hybrid energy storage systems to perform ramp-rate control in PV power plants
摘要： This paper proposes a methodology for optimal sizing of a Hybrid (battery and ultracapacitors) Energy Storage system for ramp-rate control in PV plants. Frequency stability events can appear in power systems high non-dispatchable renewable energy generation due to sharp power output fluctuations. This has caused TSOs in several countries to require PV and wind plants to implement some method for limiting the pace at which the power injection to the grid is allowed to vary (ramp-rate control). Due to its quick response, properly controlled energy storage consisting of batteries and ultracapacitors can perform this task by dampening quick increases/decreases in the power injection to the grid by absorbing/injecting power at the point of common coupling. In this work, a techno-economic model is presented that can be used to calculate the Net Present Cost over the project life of different energy storage devices used for ramp-rate control by simulating their operation. A real case is studied for a PV power plant is presented. Results are reported comparing different configurations of the energy storage system.
关键词： Ramp-rate control,Ultracapacitors,Hybrid energy storage systems,Batteries,Renewable energy
更新于2025-09-23 15:19:57
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[IEEE 2018 International conference on computation of power, energy, Information and Communication (ICCPEIC) - Chennai, India (2018.3.28-2018.3.29)] 2018 Internat2018 International Conference on Computation of Power, Energy, Information and Communication (ICCPEIC)ional conference on computation of power, energy, Information and Communication (ICCPEIC) - Modelling and Control of BESS for Solar Integration for PV Ramp Rate Control
摘要： PV power varies with the passing of clouds; these variations can affect power quality and system uniformity. PV system is combining with a storage device to mitigate the variations in power. During the fast movement of clouds causes sudden changes in power. Sudden changes can limit through ramp rate control. In this work employing a ramp rate control with energy storage system is capable of maintaining the system stability. This work is aimed to design a battery-based storage system integration with considered 500 kW solar photovoltaic power plant using ramp rate control method. The control scheme is tested and validated using MATLAB/Simulink environment.
关键词： solar PV,Power fluctuations smoothing,energy storage,battery,grid-connected PV plants,ramp rate control
更新于2025-09-10 09:29:36