1. Sisteme fotovoltaice
Functionare in conditii de siguranta cu disponibilitate maxima
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1.1. Centrale fotovoltaice > 50 kW
Disponibilitate ridicata a sistemelor fotovoltaice de mari dimensiuni !
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In cazul sistemelor fotovoltaice medii si mari, siguranta si disponibilitatea sistemului si protectia personalului de operare este foarte importanta. Orice izolatie electrica si performanta maxima a sistemului joaca un rol important in selectarea masurilor de monitorizare adecvate. In general, este important sa se localizeze rapid si automat defectiunea.
Produse recomandate:
- pentru monitorizarea rezistentei de izolatie :
ISOMETER® isoPV cu AGH-PV
ISOMETER® isoPV1685RTU/isoPV1685P/isoPV1685PFR
- pentru relee de masura si monitorizare :
LINETRAXX® VMD460-NA
- pentru localizarea defectelor de izolatie :
Trusa mobila pentru localizare defecte izolatie - ISOSCAN® EDS30…
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Standarde :
- DIN EN 60255-127
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
- VDE-AR-N 4105
Anwendungsregel:2011-08 Erzeugungsanlagen am Niederspannungsnetz Technische Mindestanforderungen für Anschluss und Parallelbetrieb von Erzeugungsanlagen am Niederspannungsnetz
- CEI 0-21
Regola tecnica di riferimento per la connessione di Utenti attivi e passivi alle reti AT ed MT delle imprese distributrici di energia elettrica (Reference technical rules for the connection of active and passive consumers to the HV and MV electrical networks of distribution Company)
- C10/11
Specifieke technische aansluitingsvoorschriften voor gedecentraliseerde productie-installaties die in parallel werken met het distributienet
- BDEW
- DIN V VDE V 0126-1-1
Selbsttätige Schaltstelle zwischen einer netzparallelen Eigenerzeugungsanlage und dem öffentlichen Niederspannungsnetz
- G83/2
Recommendations for the Connection of Type Tested Small-scale Embedded Generators (up to 16A per phase) in parallel with Low Voltage Distribution Systems
- G59/2
Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators
- G59/3
Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators
Download documente
Product overview ISOMETER®
Market segment brochure Renewable Energy
Flyer Safe connection to the grid
Application Note EDS309x
Technical paper Operating photovoltaic installations safely and efficiently
Technical paper Electrical safety in control and auxiliary circuits
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1.2. Centrale fotovoltaice <= 50 kW
Siguranta electrica la domiciliu !
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In cazul sistemelor fotovoltaice mici, protectia locuitorilor si a eventualilor operatori (brigada de pompieri, curatarea cosului de fum) este foarte importanta. Invertoarele sunt echipate in cea mai mare parte din fabrica cu echipamentul de siguranta corespunzator. Ele sunt suficient de sigure numai daca pot detecta defectele simetrice cauzate de umiditate si murdarie. La punctul de transfer intre reteaua interna si reteaua electrica generala, tensiunea si frecventa trebuie verificate la un interval predefinit.
Produse recomandate:
- pentru monitorizarea rezistentei de izolatie :
ISOMETER® IR425-D4
- pentru relee de masura si monitorizare :
LINETRAXX® VMD460-NA
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Standarde :
- DIN EN 60255-127
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
- DIN EN 61557-8
Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
Download documente
Product overview ISOMETER®
Market segment brochure Renewable Energy
Flyer Safe connection to the grid
Technical paper Operating photovoltaic installations safely and efficiently
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1.3. Protectia retelei si a sistemului
Niveluri de tensiune si de frecventa scazute !
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Inainte ca sistemele de generare interna (fotovoltaice, puterea apei, CHP, biogaz etc.) sa poata primi energia electrica din reteaua publica, trebuie instalat un punct automat de comutare intre sistemul de generare si reteaua de joasa tensiune. Acesta verifica daca frecventa si tensiunea introdusa sunt in intervalul specificat. Releul trifazat de monitorizare a tensiunii este utilizat pentru a preconfigura numeroase specificatii standard la atingerea unui buton.
Produse recomandate:
- pentru relee de masura si monitorizare :
LINETRAXX® VMD460-NA
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Standarde :
- CEI 0-21
Regola tecnica di riferimento per la connessione di Utenti attivi e passivi alle reti AT ed MT delle imprese distributrici di energia elettrica (Reference technical rules for the connection of active and passive consumers to the HV and MV electrical networks of distribution Company)
- VDE-AR-N 4105
Anwendungsregel:2011-08 Erzeugungsanlagen am Niederspannungsnetz Technische Mindestanforderungen für Anschluss und Parallelbetrieb von Erzeugungsanlagen am Niederspannungsnetz
- C10/11
Specifieke technische aansluitingsvoorschriften voor gedecentraliseerde productie-installaties die in parallel werken met het distributienet
- BDEW-Richtlinie
- DIN VDE 0126-1-1/A1
Selbsttätige Schaltstelle zwischen einer netzparallelen Eigenerzeugungsanlage und dem öffentlichen Niederspannungsnetz (Norm wurde zurückgezogen und durch DIN VDE V 0126-1-1 ersetzt)
- G59/2
Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators
- G59/3
Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators
- G83/2
Recommendations for the Connection of Type Tested Small-scale Embedded Generators (up to 16A per phase) in parallel with Low Voltage Distribution Systems
- G83/3
Recommendations for the Connection of Type Tested Small-scale Embedded Generators (up to 16A per phase) in parallel with Low Voltage Distribution Systems
Download documente
Flyer Safe connection to the grid
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2. Centrale eoliene
Exploatarea centralelor eoliene cu disponibilitate ridicata !
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2.1. Generator
Alimentarea cu medie tensiune a sistemului, in conditii de siguranta !
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In ceea ce priveste disponibilitatea ridicata si fiabilitatea sistemelor de energie eoliana, operatorul instalattiei are doar un obiectiv - evitarea oricaror perioade de intrerupere sau probleme cu functionarea zilnica.
Pentru un generator asincron cu neutrul izolat, un dispozitiv de compensare a performantei este instalat in paralel cu generatorul. Pentru sistemele moderne, viteza generatorului este deconectata de la frecventa retelei cu ajutorul unui invertor de curent alternativ. Siguranta electrica joaca un rol decisiv. O defect de izolatie nedetectat este la fel de semnificativ ca o intrerupere neasteptata a sistemului sau poate creste riscul de incendiu. In acelasi timp, interventiile neplanificate de service pot fi costisitoare si consumatoare de timp.
Produse recomandate:
- pentru monitorizarea rezistentei de izolatie :
ISOMETER® iso685…
- pentru localizarea defectelor de izolatie :
ISOSCAN® EDS4440/EDS441
ISOSCAN® EDS460/EDS461 -L/-D
ISOSCAN® EDS490/EDS491 -L/-D
ISOSCAN® EDS460-DG
ISOSCAN® EDS150/EDS151
Trusa mobila pentru localizare defecte izolatie - ISOSCAN® EDS30…
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Standarde :
- DIN EN 61400-2
Wind turbines - Part 2: Requirements for small wind turbines
- DIN EN 60255-127
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
- DIN EN 50178
Electronic equipment for use in power installations
Download documente
Product overview ISOMETER®
Market segment brochure Renewable Energy
Technical paper Insulation fault location - Planning and set up in the solar charging station at the University of Applied Sciences Bingen
Technical paper Answers for tomorrow
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