تنظيم ولتاژ شبكه هاي توزيع با ضريب نفوذ بالاي منابع فتوولتائيك توسط مديريت توان اكتيو و راكتيو

چكيده انگليسي :

Voltage Regulation in Distribution Networks with High PV Penetration Using Active and Reactive Power Management Mehdi Zeraati m zeraati@ec iut ac ir January 13 2018 Doctor of Philosophy Thesis Department of Electrical and Computer Engineering Isfahan University of Technology 84156 83111 Isfahan IranSupervisor Prof Mohamad Esmail Hamedani Golshan hgolshan@cc iut ac irAdvisor Dr Ahmadreza Tabesh a tabesh@cc iut ac irDepartment Graduate Program Coordinator Dr Mohammadreza Taban Department of Electrical and Computer Engineering Isfahan University of Technology 84156 83111 Isfahan IranAbstractThe voltage rise problem in low voltage distribution networks LVDN with high penetration of photovoltaic PV resourcesis one of the most important challenges in the development of these renewable resources First the battery energy storage BES systems are used in order to solve the voltage rise during the peak PV generation as well as the voltage drop whilemeeting the peak load A coordinated control strategy is proposed to regulate the charge discharge of BESs using a combi nation of the local droop based control method and a distributed control scheme which ensures the voltages of feeder remainwithin allowed limits The weighted consensus algorithm determines the BESs participation in voltage regulation in termsof their installed capacity whereas the dynamic consensus algorithm modifies the BESs performance in terms of their stateof charge SoC to prevent the excessive saturation or depletion of batteries Then a combined method using the batteryenergy management of plug in electric vehicles PEVs and the active power curtailment APC of PV arrays is proposedto regulate voltage in LVDNs with high penetration level of PV resources A distributed control strategy composed of twoconsensus algorithms is used to reach an effective utilization of limited storage capacity of PEV battery considering itspower capacity and SoC A consensus control algorithm is also developed to fairly share the required power curtailmentamong PVs during overvoltage periods Third the potential capability of residential PV inverters is investigated to developa distributed reactive power compensation scheme for voltage regulation in three phase four wire unbalanced LVDNs Forthis purpose an effective method is proposed by means of single phase PV inverters arbitrarily connected among differentphases The aims are improving voltage profile along the feeder and reducing the voltage unbalances The PV invertersare connected in such a way that they form distributed delta and wye configurations to compensate the negative and zerosequence components of voltage respectively and to regulate voltage within the allowed limits as well Key Words Battery Energy Storage System Consensus Algorithm Distributed Control Methods LV Distri bution Networks PEV PV Reactive Power Control Voltage Regulation IntroductionIn the recent years the technological developments the consistent increased demand for sustainable energyresources together with environmental and economic reasons have been motivating the rapid integration ofrenewable distributed energy resources to low voltage distribution networks LVDNs Conti et al 2014 Theworldwide market for solar photovoltaic PV systems has been increased significantly in recent decade Theglobal total installed PV capacity estimated at roughly 303 GW at the end of 2016 76 GW of which has beeninstalled in 2016 PV has several technical and environmental advantages including power losses and congestionreduction and low carbon The growing use of residential rooftop PVs connected to the LVDNs creates some problems such as powerquality issues One of the main challenges of increasing photovoltaic resources is the voltage rise problem dueto reverse power flow in distribution networks Tonkoski et al 2012 Variable generation of PV resourcesbecause of stochastic sun radiation on the one hand and the mismatch between generation and load peaks in

زراعتي، مهدي

تنظيم ولتاژ شبكه هاي توزيع با ضريب نفوذ بالاي منابع فتوولتائيك توسط مديريت توان اكتيو و راكتيو

الگوريتم توافق عام , تنظيم ولتاژ , خودروي الكتريكي , روش هاي كنترل توزيع شده , سيستم ذخيره ساز انرژي باتري , شبكه هاي توزيع LV , كنترل توان راكتيو , منابع فتوولتائيك