Convergence characteristics of existing Newton-Raphson (N-R) load-flow based FACTS devices models are affected by the choice of initial conditions. Many a time, a solution is either spurious or fails to converge. To overcome the problem of convergence, this paper proposes a holomorphic embedding load-flow method (HELM)-based model of STATCOM. The initial conditions of the proposed model are deterministic and therefore the solution of the model is always unique. The model always converges if the solution exists. The proposed model can be operated in various control modes to regulate different parameters of power systems. The feasibility and convergence characteristics of the proposed model are investigated using benchmark IEEE 30-bus test system. INDEX TERMS Control modes, holomorphic embedding, power series, STATCOM, SVD based Padé approximants.

Accuratecharacterizationandreportingoforganicphotovoltaic(OPV)deviceperformanceremainsone\ud of theimportantchallengesinthe field. Thelargespreadamongtheefficiencies ofdeviceswiththesame\ud structure reportedbydifferentgroupsissignificantly causedbydifferentproceduresandequipment\ud used duringtesting.Thepresentedarticleaddressesthisissuebyofferinganewmethodofdevice\ud testing using “suitcase sample” approach combinedwithoutdoortestingthatlimitsthediversityofthe\ud equipment,andastrictmeasurementprotocol.Aroundrobinoutdoorcharacterizationofroll-to-roll\ud coated OPVcellsandmodulesconductedamong46laboratoriesworldwideispresented,wherethe\ud samples andthetestingequipmentwereintegratedinacompactsuitcasethatservedbothasasample\ud transportation toolandasaholderandtestequipmentduringtesting.Inaddition,aninternetbased\ud coordination wasusedviaplasticphotovoltaics.orgthatallowedfastandefficient communicationamong\ud participants andprovidedacontrolledreportingformatfortheresultsthateasedtheanalysisofthe\ud data. Thereporteddeviationsamongthelaboratorieswerelimitedto5%whencomparedtotheSi\ud referencedeviceintegratedinthesuitcaseandwereupto8%whencalculatedusingthelocalirradiance\ud data. Therefore,thismethodoffersafast,cheapandefficient toolforsamplesharingandtestingthat\ud allowsconductingoutdoormeasurementsofOPVdevicesinareproduciblemanner

No abstract

No abstract

No abstract