Economic Power Management With BESS
01 Feb 2019-pp 24-29
TL;DR: A generalized rule-based EPMA is proposed, which is capable of making decisions considering all the conditions that prevail throughout the year and can extract maximum advantages from BESS, which in turn helps power customers to reduce their electricity bills and increase their incentives.
Abstract: This paper mainly focuses on economic power management of a grid interactive microgrid with BESS. The declining battery price at a rapid rate has laid a milestone for this paper. The colocating solar generation with BESS is a concept garnering much attention lately. This paper highlights how batteries can be cast-off for demand-charge management thereby contributing to savings in electricity bills. In this context, a generalized rule-based EPMA is proposed, which is capable of making decisions considering all the conditions that prevail throughout the year. For instance, at the time of non-conventional load hours like peak load hours, monsoons, power blackouts. Furthermore, the algorithm ensures sustained power supply for the critical industrial load by retaining battery Soc’s within limits. Hence, we can extract maximum advantages from BESS, which in turn helps power customers to reduce their electricity bills and increase their incentives.
Citations
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01 Sep 2020
TL;DR: This paper addresses DC microgrid stability by deploying a PV system with integrated energy storage working on a low voltage of supercapacitors and observes the stability of DC micro grid under this condition.
Abstract: This paper addresses DC microgrid stability by deploying a PV system with integrated energy storage. The integrated energy storage contains battery and supercapacitors for which the battery satisfies the normal load requirement and supercapacitor to fulfill the requirement of a transient load by saving battery life from unwanted charging and discharging cycles. In the conventional design method, a supercapacitor is observed only at the rated voltage. Generally, the supercapacitor voltage decreases because of self-discharge and it is observed that the typical controller design strategy will make microgrid unstable at low supercapacitor voltage. Proposed system is working on a low voltage of supercapacitors and observes the stability of DC microgrid under this condition. Also, this system works in all the designed operating modes. So, the complete performance of microgrids is investigated and adequate system operating conditions with stability are verified. Finally, the structure is verified through simulation and test results.
Cites methods from "Economic Power Management With BESS..."
...energy mode 3) floating power mode[13]....
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...In the traditional control method [11-14], the controller design takes into account the adequate supercapacitor Proceedings of the International Conference on Smart Electronics and Communication (ICOSEC 2020) IEEE Xplore Part Number: CFP20V90-ART; ISBN: 978-1-7281-5461-9...
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References
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TL;DR: The key feature of the proposed supervisory power management system is reduced number of sensors required and a better dc-link voltage regulation is achieved and the usage of supercapacitors reduces the current stress on the battery.
Abstract: This paper proposes a supervisory power management system (PMS) for a grid interactive microgrid with a hybrid energy storage system. The key feature of the proposed PMS is reduced number of sensors required to implement the PMS. The PMS considers renewable power variation, grid availability, electricity pricing, and changes in local loads. It can detect the operating mode of system without measuring load currents and powers. A single-phase voltage source converter (VSC) transfers real power between dc grid and utility grid besides offering ancillary services such as harmonic mitigation, reactive power support, and unity power factor at the point of common coupling (PCC). In the proposed system, a better dc-link voltage regulation is achieved and the usage of supercapacitors reduces the current stress on the battery. The PMS also addresses extreme operating conditions such as load shedding, off-maximum power point tracking operation of photovoltaic, elimination of critical oscillation of hybrid energy storage systems power, islanded operation, and resynchronization with grid. The performance of the proposed PMS is verified by digital simulation and experimental studies.
142 citations
"Economic Power Management With BESS..." refers background or methods in this paper
...G B. Economic Power Management Algorithm: The EPMA determines the operating mode of the system based on iavg (t), as shown in Fig....
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...Furthermore, arithmetic controller has been proposed which acts as a voltage controller for maintaining inverter output voltage in VCM of inverter thereby eliminating the complexity of tuning the earlier controller [5]....
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...The EPMA is formulated with following operational objectives in addition to objectives of [5] Primary Objectives: 1....
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...The proposed EPMA is proved to be capable of making decisions in favor of power customers to reduce their electricity bills by providing sustained supply to critical industrial loads with maximum back up protection by ensuring that batteries are operating within their Soc limits....
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...Hence we can conclude EPMA is more beneficial than PMA (5) from the economic perspective....
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TL;DR: The proposed energy management system (EMS) can reduce the electricity price by charging the energy of nighttime electric power and suppress the grid voltage variations caused by the large amount of PV generations during daytime with respect to relatively less load demand.
Abstract: This paper proposes the new energy management method based on the photovoltaic (PV) hybrid power conditioning system of 4 kW with an energy storage device (ESD). The use of the ESD such as a lithium-ion battery improves the energy efficiency of the overall system depending on time and weather conditions. In addition, the proposed system provides the new function for energy management in real time without weather forecasting while it considers the power generations from the PV system, residential load variations, and electricity price. In other words, the proposed energy management system (EMS) can reduce the electricity price by charging the energy of nighttime electric power. In addition, it can suppress the grid voltage variations caused by the large amount of PV generations during daytime with respect to relatively less load demand. The performances of the proposed EMS system based on the 4-kW PV HPCS with a lithium-ion battery are evaluated by time-domain simulation. Thereafter, the experimental prototype is implemented in hardware to verify the usefulness of the proposed system.
79 citations
"Economic Power Management With BESS..." refers methods in this paper
...In [4] a unique control method is proposed for a grid interactive microgrid with energy storage....
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TL;DR: In this article, an integrated wind, solar, and energy storage (IWSES) plant has been proposed, which has a far better generation profile than standalone wind or solar plants and is suitable for regions that have set high targets for wind and solar generation but have limited land available for project development.
Abstract: Colocating wind and solar generation with battery energy storage is a concept garnering much attention lately. An integrated wind, solar, and energy storage (IWSES) plant has a far better generation profile than standalone wind or solar plants. It results in better use of the transmission evacuation system, which, in turn, provides a lower overall plant cost compared to standalone wind and solar plants of the same generating capacity. IWSES plants are particularly suitable for regions that have set high targets for wind and solar generation but have limited land available for project development.
33 citations
"Economic Power Management With BESS..." refers background in this paper
...For instance, like Energy Shifting, Frequency regulation, penalty charge management, black-start capability [1]....
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01 Dec 2017
TL;DR: In this paper, a Proportional Resonant (PR) current controller is applied to single-phase grid-connected of PV inverter with LCL filter for restraining the high resonant peak value.
Abstract: This paper presents a Proportional Resonant (PR) current controller applied to single-phase grid-connected of PV inverter with LCL filter. The damping resistor is adopted in LCL filter for restraining the high resonant peak value. In order to track a reference value with fast, the system with high gain is produced by the PR current controller in the wide range of frequency. Then, low THD of the yield grid current is compared with PI current controller.
6 citations
"Economic Power Management With BESS..." refers background in this paper
...Block Diagram of PR current controller [9]...
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...The closed loop gain of the current control loop with the PR controller is identified by: G(s) = !" (s) # (s) [9] Where # (s) = $%& '$%(&'% where L=) =5mH, C=* =1500μF !" (s) = + (& , -....
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01 Dec 2015
TL;DR: In this article, the authors proposed a new architecture for a residential microgrid with hybrid energy storage system and a control algorithm to integrate it with utility grid, which has multiple DC outputs and an AC output to feed various DC and AC loads in the microgrid.
Abstract: This paper proposes a new architecture for a residential microgrid with hybrid energy storage system and a control algorithm to integrate it with utility grid. The proposed architecture has multiple DC outputs and an AC output to feed various DC and AC loads in the microgrid. This architecture with proposed control algorithm achieves continuous and reliable power supply to local loads in a residential microgrid and export/ import power to/from grid. The proposed control algorithm considers the PV variations, grid availability and variations in local loads. In the proposed system multiple dc outputs i.e 200V and 48V dc are employed to supply high power DC loads and critical/low power DC loads respectively. The control algorithm always maintains the 48V DC bus on, so that the critical/low power DC loads in the microgrid are continuously supplied power. A single phase voltage source converter(VSC) transfers real power between DC grid and utility grid and supplies power to local AC loads. It also provides ancillary services such as reactive power support and unity power factor and harmonic mitigation at the point of common coupling (PCC).
5 citations
"Economic Power Management With BESS..." refers methods in this paper
...In [7] a Control Algorithm is proposed for a PV based Hybrid Microgrid....
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