1 / 9

Joint Measurement of Energy Quantity and Quality in Distribution Substations

Měřící Energetické Aparáty, a.s. specializes in the joint measurement of energy quantity and quality in electricity distribution substations. Our advanced energy meters provide stable and consistent measurements, contributing to the reliability of electricity supplies. This measurement addresses voltage quality, ensuring compliance with safety and performance standards. Our approach to power quality measurement is dynamic and adaptable, catering to both new and existing networks. We aim to foster customer trust and provide valuable insights for distribution companies and society.

oma
Télécharger la présentation

Joint Measurement of Energy Quantity and Quality in Distribution Substations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Měřící Energetické Aparáty, a.s. Joint measurement ofenergyquantityandenergyquality in distributionsubstations www.e-mega.cz

  2. Měřící Energetické Aparáty, a.s. • Measurementofvoltagequality • in electricity meter • Technicalypossible • Priceofrealisation? • Interrestofcustommers? • Feasibilityistimeandfinancialydemanding • Contributionfordistributioncompanies? • Contributionfor society? www.e-mega.cz

  3. Měřící Energetické Aparáty, a.s. • Measurementofenergyquantityandquality • Energy meters are set gauges, measuring functions are stable and consistent • The meter is perceived by society as an unchanging, certified deviceandeven technically well-meaning development can lead to discussion and consequently to distrust • Power Quality Measurement currently goes through a dynamic development • Implementation in the new networks and • in already constructed and operated networks • Unificationofstandards • Timefactor: price + performance ↔ time www.e-mega.cz

  4. Měřící Energetické Aparáty, a.s. www.e-mega.cz

  5. Měřící Energetické Aparáty, a.s. • Questionsfordecisionabout joint measurement • ofelectricenergyquantityandquality • Delivery point formeasurementofqualityofelectricenergyis point • in public distribution network, whereenergyisexchangedbetweencontractingparties. • This point may vary from point ofmeasurementofelectricenergyquantity • Class A – forcontractingrelationships • ClassS – forstatisticalevaluation (twotendenciesofmeasuringmethods) www.e-mega.cz

  6. Měřící Energetické Aparáty, a.s. • Linearity rangeofvoltagemeasurementcircuits: 1.75 UNOM • classS – 3rdtestingstate1.52UNOM, 20% harmonics, 0.723% flicker, 1% interharmonics • Evaluation period: • energyquantity/15min • quality/10minaggregation • Data transfer security: • energyquantity/billing • quality/informative www.e-mega.cz

  7. Měřící Energetické Aparáty, a.s. • Continuousphenomena • (flagged 10 minuteevaluations) • Frequencyevaluation, 10s averagevalueofharmonics basic component • Flickerevaluation, forchanges ∆U/U from 1change/min.upto 4000 ch./min. • Voltageunbalance • Harmonicanalysis, frequencyofcalculation (10 periods/1s, withoutgaps) • Voltagephenomena • (URMS1or URMS1/2, hysteresis, clusteringalgorithms) • Forflagging • Securedpowersupply (measurementuncertainity 1% Unomand 20ms during 1 minute) www.e-mega.cz

  8. Měřící Energetické Aparáty, a.s. • Expecteddevelopment in votagequalitymeasurement • Changesofindicativevalues ​​forvoltageandcontinuousphenomena • Rapid voltagechanges • Recordof RMS values • Oscilographicrecord • Phaseangleduringinceptionof rapid change • Shortchangeofvoltageunbalance • Phaseshiftcaused by rapid change • Measurementofharmonicsandinterharmonics (40. H, 50.H, 100.H) • Transientvoltage www.e-mega.cz

  9. Měřící Energetické Aparáty, a.s. • Conclusions • Intended association of operational measurements and the measurement • of quantity and quality of el. energy is in place • The solution can only be assessed on the basis of operational experience • Verification of measurement in substations which is easily accessible is offering • It is needed to respect different meanings of measurement in substation • and on interface between distribution and custommer • Other solutions in case of already constructed and operated networks • and another in new networks or in networks with a refurbished power equipment www.e-mega.cz

More Related