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Quantifying the impact of supply frequency adjustments for DER control by Sean Elphick, Duane A Robinson et al

An unexpected challenge facing network operators due to high penetration levels of small-scale solar photovoltaic occurs when diesel backup generators are used to maintain supply to small network islands during maintenance. Most grid-connected small-scale solar inverters in Australia have no means of grid control and it is uneconomical to individually isolate each device within premises. Taking advantage of out of frequency protection settings of the inverters to disable output of distributed generation is one potential mechanism Network Service Providers are considering when operating the diesel generator. This is achieved by operating the diesel generation at a frequency above or below the inverter out of frequency settings. This paper investigates the potential impact of this operation on other connected loads, specifically 44 domestic appliances. The impact on electrical parameters RMS current, real and reactive power, displacement power factor, and current total harmonic distortio

Network service providersFrequency variationRoad behaviourPower qualityRenewable energy

Impact of Sustained Supply Voltage Magnitude on Consumer Appliance Beh by Sean Elphick, Duane Robinson et al

Voltage rise caused by high levels of distributed generation is manifesting as voltage regulation challenges for many electricity network operators. In this environment it would be ideal to reduce supply voltage magnitudes, however, many network operators are hesitant to do so due to concerns related to appliance operation at reduced voltage magnitudes. Voltage regulation requirements are defined by network standards and network service providers must ensure voltages remain within specified limits. Through an extensive evaluation of domestic appliance performance when supplied at various voltage magnitudes this paper examines the impact of varying voltage levels on residential appliances. Equipment energy demand, operation and actuation were monitored for each applied voltage magnitude. While no equipment failures were recorded, appliance behaviour varied significantly with applied voltage level. Individual appliance conservation voltage reduction factors were also established. The res

Distribution networksHome appliancesRoad behaviourLoad managementPower qualityVoltage controlVoltage regulation

Lancia Thema Turbo ie (1984-1994) : la grande italienne reine des premiums, dès 3 000 €

Lancia Thema Turbo ie (1984-1994) : la grande italienne reine des premiums, dès 3 000 €
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