ITSI20090001A1 - GENERATOR LINE PROTECTION - Google Patents
GENERATOR LINE PROTECTION Download PDFInfo
- Publication number
- ITSI20090001A1 ITSI20090001A1 IT000001A ITSI20090001A ITSI20090001A1 IT SI20090001 A1 ITSI20090001 A1 IT SI20090001A1 IT 000001 A IT000001 A IT 000001A IT SI20090001 A ITSI20090001 A IT SI20090001A IT SI20090001 A1 ITSI20090001 A1 IT SI20090001A1
- Authority
- IT
- Italy
- Prior art keywords
- protection
- line
- differential
- board
- generator
- Prior art date
Links
- 230000004224 protection Effects 0.000 title claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/14—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/167—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass combined with other earth-fault protective arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
- H02H3/331—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers responsive to earthing of the neutral conductor
Landscapes
- Control Of Eletrric Generators (AREA)
Description
: " PROTEZIONE LINEA GENERATORE : "GENERATOR LINE PROTECTION
DESCRIZIONE DESCRIPTION
Il progetto, ha lo scopo di proteggere l'utente da eventuali dispersioni che si possono verificare, sulla linea di alimentazione della rete 220Vac monofase o 380 Vac trifase, a bordo delle imbarcazioni quando tale alimentazione à ̈ generata da un generatore di bordo e, non viene quindi utilizzata l'alimentazione fornita dalia banchina di terra del pontile. L'inconveniente che si presenta nella sopra citata condizione à ̈ la mancanza di intervento del sistema differenziale di bordo, definii o "salvavita", a causa della mancanza di un riferimento reale di messa a terra che permetta ,come nel normale funzionamento con il riferimento da banchina, una analisi e quindi il monitoraggio della corrente che fluisce all'interno del sistema stesso. Infatti una reale dispersione su di uno chassis di un utilizzatore di bordo, come può essere uno scaldabagno, un forno elettrico o qualsiasi altro utilizzatore elettrico alimentato con rete 220 Vac, in questo caso non verrebbe in alcun modo avvertita dalle protezioni, con conseguenze letali per il corpo umano. Il circuito proposto invece analizza costantemente la linea di terra esistente a bordo e, nel caso in cui ci dovesse essere una presenza di dispersione su di essa, il circuito la elaborerebbe come un segnale che, manipolato elettronicamente, creerebbe una chiusura di corto circuito fra fase e neutro della linea, con il conseguente intervento del sistema magnetotermico, interrompendo così l'erogazione delia linea a bordo, che potrà essere riattivata solo a guasto riparato.Questo sistema quindi si diversifica dal concetto di intervento differenziale ed opera quindi solo per monitoraggio linea di terra. Nello schema di fig. 1 viene indicato un diagramma a blocchi per poter meglio comprendere le varie fasi del monitoraggio c quindi successivamente dell'utilizzo dei segnale. 1 o schema viene riportato in copia nel Prospetto Modulo A paragr. P. Lo schema circuitale vero e proprio à ̈ già stato sviluppato ed avrà delle diversificazioni a secondo del tipo di rete che andremo a monit orare , Grazie al suo modo di intervento, può essere applicato a tutti i mezzi che hanno la necessita' di avere una doppia alimentazione sia da terra, per dove à ̈ richiesto l'intervento differenziale di protezione, sia da bordo, generata da dispositivi propri, condizione nella quale non interviene il differenziale. In pratico i particolari di esecuzione potranno comunque variare senza uscire nell'ambito del trovalo e quindi dal dominio del brevetto di invenzione. The project aims to protect the user from any leaks that may occur, on the power line of the 220Vac single-phase or 380 Vac three-phase network, on board the boats when this power is generated by an on-board generator and, not the power supplied by the land quay of the wharf is then used. The drawback that occurs in the aforementioned condition is the lack of intervention of the on-board differential system, defined or "lifesaving", due to the lack of a real earth reference that allows, as in normal operation with the reference from the quay, an analysis and therefore the monitoring of the current flowing inside the system itself. In fact, a real dispersion on a chassis of an on-board user, such as a water heater, an electric oven or any other electric user powered by 220 Vac mains, in this case would not be in any way warned by the protections, with lethal consequences for the human body. The proposed circuit, on the other hand, constantly analyzes the earth line existing on board and, in the event that there should be a presence of dispersion on it, the circuit would process it as a signal which, electronically manipulated, would create a short circuit closure between phases. and neutral of the line, with the consequent intervention of the magnetothermic system, thus interrupting the supply of the on-board line, which can be reactivated only when the fault is repaired.This system therefore differs from the concept of differential intervention and therefore operates only for line monitoring of land. In the diagram of fig. 1 shows a block diagram in order to better understand the various phases of monitoring and therefore subsequently of the use of the signal. 1 or diagram is copied in the Prospectus Form A par. P. The actual circuit diagram has already been developed and will have diversifications according to the type of network we are going to monitor, Thanks to its mode of intervention, it can be applied to all means that need to have a double power supply both from the ground, where the differential protection intervention is required, and from the board, generated by its own devices, a condition in which the differential does not intervene. In practice, the details of execution may in any case vary without departing from the scope of the finding and therefore from the domain of the invention patent.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITSI2009A000001A IT1403395B1 (en) | 2009-02-03 | 2009-02-03 | GENERATOR LINE PROTECTION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITSI2009A000001A IT1403395B1 (en) | 2009-02-03 | 2009-02-03 | GENERATOR LINE PROTECTION |
Publications (2)
Publication Number | Publication Date |
---|---|
ITSI20090001A1 true ITSI20090001A1 (en) | 2010-08-04 |
IT1403395B1 IT1403395B1 (en) | 2013-10-17 |
Family
ID=40983518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITSI2009A000001A IT1403395B1 (en) | 2009-02-03 | 2009-02-03 | GENERATOR LINE PROTECTION |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1403395B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0266883A1 (en) * | 1986-10-03 | 1988-05-11 | Hunting Communication Technology Limited | Detection of unsafe voltages on mobile equipment |
WO1997036358A1 (en) * | 1996-03-28 | 1997-10-02 | Hayim Nevo | Safety adapter for ungrounded electrical socket |
WO2008145600A1 (en) * | 2007-06-01 | 2008-12-04 | Kem-O-Tek Italia Srl | Circuit for protection against the risk of electric shocks |
-
2009
- 2009-02-03 IT ITSI2009A000001A patent/IT1403395B1/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0266883A1 (en) * | 1986-10-03 | 1988-05-11 | Hunting Communication Technology Limited | Detection of unsafe voltages on mobile equipment |
WO1997036358A1 (en) * | 1996-03-28 | 1997-10-02 | Hayim Nevo | Safety adapter for ungrounded electrical socket |
WO2008145600A1 (en) * | 2007-06-01 | 2008-12-04 | Kem-O-Tek Italia Srl | Circuit for protection against the risk of electric shocks |
Also Published As
Publication number | Publication date |
---|---|
IT1403395B1 (en) | 2013-10-17 |
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