Voltage reduction
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Optimal placement of DG and DSTATCOM for loss reduction and voltage profile improvement Open
Due to rapid depletion of fossil fuels availability and huge environmental pollution, focus is now changing from traditional method of power generation to the non-conventional DERs located at distribution voltage level. Technological advan…
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Load Control Using Sensitivity Identification by Means of Smart Transformer Open
The higher variability introduced by distributed generation leads to fast changes in the aggregate load composition, and thus in the power response during voltage variations. The smart transformer, a power electronics-based distribution tr…
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Contribution of Distribution Network Control to Voltage Stability: A Case Study Open
peer reviewed
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Distributed Optimal Conservation Voltage Reduction in Integrated Primary-Secondary Distribution Systems Open
This paper proposes an asynchronous distributed leader-follower control method to achieve conservation voltage reduction (CVR) in three-phase unbalanced distribution systems by optimally scheduling smart inverters of distributed energy res…
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An Efficient Mathematical Model for Distribution System Reconfiguration Using AMPL Open
Made available in DSpace on 2022-04-29T08:29:33Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021-01-01
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Safe limits on voltage reduction efficiency in GPUs Open
Energy efficiency of GPU architectures has emerged as an important aspect of computer system design. In this paper, we explore the energy benefits of reducing the GPU chip's voltage to the safe limit, i.e. Vmin point. We perform such a stu…
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H8 Inverter for Common-Mode Voltage Reduction in Electric Drives Open
This paper presents a modified two-level three-phase inverter for the reduction of the leakage current. With respect to a traditional two-level inverter, the proposed solution reduces the common-mode voltage (CMV), both in amplitude and fr…
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OPF-Based CVR Operation in PV-Rich MV–LV Distribution Networks Open
Conservation voltage reduction (CVR) has been traditionally applied adopting moderate settings at primary substations and when distributed generation was uncommon. However, as new infrastructure is deployed across European-style medium vol…
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Photovoltaic Impact Assessment of Smart Inverter Volt-VAR Control on Distribution System Conservation Voltage Reduction and Power Quality Open
This report presents an impact assessment study of distributed photovoltaic (PV) with smart inverter Volt-VAR control on conservation voltage reduction (CVR) energy savings and distribution system power quality. CVR is a methodology of fla…
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Event-Driven Predictive Approach for Real-Time Volt/VAR Control With CVR in Solar PV Rich Active Distribution Network Open
The focus of this paper is on analyzing the impact of conservation voltage reduction in the presence of active devices such as solar photovoltaic (PV) and developing controls that leverage these distributed energy resources. An event-drive…
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Predictive Coordinated and Cooperative Voltage Control for Systems With High Penetration of PV Open
In this paper, we propose a predictive coordinated and cooperative voltage control method in a power distribution system with high penetration of photovoltaic (PV) units. First, an integrated coordinated voltage control of voltage regulato…
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Coordinated Use of Smart Inverters With Legacy Voltage Regulating Devices in Distribution Systems With High Distributed PV Penetration—Increase CVR Energy Savings Open
This paper studies the coordinated use of smart inverters with legacy voltage regulating devices to help increase the energy savings from conservation voltage reduction (CVR) in distribution systems with high photovoltaic penetration. Two …
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Evaluation of Three-Phase Transformerless DC-Bypass PV Inverters for Leakage Current Reduction Open
In transformerless photovoltaic (PV) systems, the leakage current reduction is one of the most important issues. Many interesting single-phase dc-bypass transformerless PV inverters have been proposed for the leakage current reduction, and…
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A Switched-Capacitor-Voltage-Doubler Based Boost Inverter for Common-Mode Voltage Reduction Open
In this paper, a modified three-phase two-level voltage source inverter is proposed. By combining the conventional three-phase H-bridge inverter with a switched-capacitor-voltage-doubler network, the DC-link voltage of the proposed inverte…
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Conservation Voltage Reduction Case Study Open
A Conservation Voltage Reduction (CVR) is an efficient method to manage the load demand in distribution power systems. This paper proposes the utilization of the CVR method on Washington EMC's power system and Georgia Transmission Corporat…
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Exceeding Conservative Limits: A Consolidated Analysis on Modern Hardware Margins Open
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Understanding Reduced-Voltage Operation in Modern DRAM Devices Open
The energy consumption of DRAM is a critical concern in modern computing systems. Improvements in manufacturing process technology have allowed DRAM vendors to lower the DRAM supply voltage conservatively, which reduces some of the DRAM en…
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Application of autonomous smart inverter Volt-VAR function for voltage reduction energy savings and power quality in electric distribution systems Open
This paper evaluated the impact of smart inverter Volt-VAR function on voltage reduction energy saving and power quality in electric power distribution systems. A methodology to implement the voltage reduction optimization was developed by…
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Impact of various load models on D-STATCOM allocation in DNO operated distribution network Open
In this article the impact of various load models on optimal allocation of D-STATCOM is obtained by DNO for radial distribution system with an objective of power loss reduction with enhancement of voltage profile and overall energy saving.…
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Potential energy savings by using direct current for residential applications: A Danish household study case Open
This paper presents a study of the potential energy savings by implementing dc distribution systems for residential applications. In general, it is commonly accepted that the use of dc voltage improves the efficiency of the distribution, d…
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Reactive Power Compensation with PV Inverters for System Loss Reduction Open
Photovoltaic (PV) system inverters usually operate at unitary power factor, injecting only active power into the system. Recently, many studies have been done analyzing potential benefits of reactive power provisioning, such as voltage reg…
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Minimisation of voltage fluctuation resulted from renewable energy sources uncertainty in distribution systems Open
The penetration of renewable energy sources (RESs) in distribution systems faces many issues due to their output uncertainty resulted from climate conditions. The uncertainty impacts on the voltage fluctuations are reduced by using a propo…
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Energy Conservation of Smart Grid System Using Voltage Reduction Technique and Its Challenges Open
Energy conservation has become crucial due to the present energy crisis in the world. To resolve such crises and reduce peak hours' electricity demand, the conservation voltage reduction (CVR) technique is frequently implemented in the pow…
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Dynamic Voltage and Frequency Scaling as a Method for Reducing Energy Consumption in Ultra-Low-Power Embedded Systems Open
Dynamic voltage and frequency scaling (DVFS) is a technique used to optimize energy consumption in ultra-low-power embedded systems. To ensure sufficient computational capacity, the system must scale up its performance settings. The object…
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Peak-Load Management of Distribution Network Using Conservation Voltage Reduction and Dynamic Thermal Rating Open
The peak-load management of a distribution network (DN) has gained attention by increasing the electric power consumption on the demand side. By developing smart-grid infrastructures, effective utilization of the DN’s components and proper…
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Conservation Voltage Reduction and Volt-VAR Optimization: Measurement and Verification Benchmarking Open
The ongoing efforts in grid modernization, which is accompanied by upgrading distribution grids through employment of advanced distribution grid technologies, further provide the necessary tools to employ Conservation Voltage Reduction (CV…
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A Review of Reduction Methods of Impact of Common-Mode Voltage on Electric Drives Open
In this survey paper, typical solutions that focus on the reduction in negative effects resulting from the common-mode voltage influence in AC motor drive applications are re-examined. The critical effectiveness evaluation of the considere…
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Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction Open
In a single-stage buck-boost quasi-switched boost inverter (qSBI), the shoot-through state insertion causes high amplitude common-mode voltage. Consequently, the qSBI becomes less attractive in transformerless photovoltaic (PV) systems. In…
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Competitiveness of PV Inverter as a Reactive Power Compensator considering Inverter Lifetime Reduction Open
With the increasing adoption of photovoltaic systems (PVs) in distribution grid, many researchers and grid operators have proposed and started to utilise PV inverters for local reactive power compensation (RPC). The local RPC has been show…
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Common-Mode Voltage Mitigation of Dual Three-Phase Voltage Source Inverters in a Motor Drive Application Open
Electric variable speed drives (VSDs) based on two VSDs connected to a multiphase machine
\nare an attractive solution to replace high-power mechanic and hydraulic systems in many sectors of industry
\nand transportation because they prese…