Cur cur duae alimentationis arcae in unitate anulari solid-insulata 2-in 4-out 10 kV sint?

"2-in 4-out 10 kV solid-insulated ring main unit" significat unitatem specificam anuli principale (RMU). Terminus "2-in 4-out" indicat hanc RMU habere duos conductores incurrentes et quattuor conductores ecurrentes.

10 kV solid-insulated ring main unit sunt instrumenta uti in systemis distributionis mediae tensionis, praeponenter installata in substationibus, stationibus distributionis, et stationibus transformatorum ad distribuendum potentiam altae tensionis ad retia distributionis bassae tensionis. Consistunt generaliter ex armariis conductorum incurrentium altae tensionis, armariis conductorum ecurrentium bassae tensionis, armariis controlis, et aliis componentibus. Secundum diversa usus et requisitiones, numerus conductorum incurrentium et ecurrentium in RMUs solid-insulated mediae tensionis variare potest. Exempli gratia, RMU "2-in 4-out" significat habere duas circuitus incurrentes et quattuor circuitus ecurrentes.

Design 2-in 4-out 10 kV solid-insulated ring main unit considerat scenarios sicut connectiones rami multorum et conductorum parallelorum in systemis distributionis ut melius satisfaciat diversis requisitionibus supply electricae. Exempli gratia, in urbibus residentialibus, potentia debet dirigi ad diversas zonas residentialis et etiam distribui ad varias facilitates commerciales et equipmenta publica distributionis electricae; ergo, RMUs cum circuitis ecurrentibus multis—sicut configuratio 2-in 4-out—requiruntur. 

Propter numerum relativum magnum conductorum ecurrentium, design structurae et connectiones electricae sunt correspondentia complexiora. Considerationes debent includere routing proprium cabulorum, selectionem disjunctorum, fusorum, et aliorum instrumentorum protectorum, sicut et balanceamento oneris inter circuitus ecurrentes ut securitas, stabilitas, et operatio fidelis systematis distributionis assecuretur.

2-in 4-out 10 kV solid-insulated ring main unit potest melius satisfacere requisitionibus rami, transferendi, protectionis, et controlis in systemis distributionis mediae tensionis. Design et usus eius debet considerare characteres et necessitates reales systematis distributionis.

2-in 4-out 10 kV High-Voltage Ring Main Unit

2-in 4-out 10 kV solid-insulated ring main unit est genus instrumenti distributionis mediae tensionis praeponenter uti ad distribuendum potentiam altae tensionis ad quattuor circuitus rami in rete distributionis.

Structura principalis huius RMU includit armarium primarium incurrentium, compartimentum secundarium partitionis, compartimentum secundarium transformatoris, et armarium controlis. Armarium primarium incurrentium constat principaliter ex disjunctore, commutatore disconnectivo, et transformatore currentis, qui recipiunt energiam electricam ab fonte altae tensionis et ducunt in RMU. Compartimentum secundarium partitionis includit principaliter commutatores disconnectivos, commutatores oneris, et capacitores, distribuentes potentiam decrementatam ad quattuor conductorum ecurrentium secundariorum. Compartimentum secundarium transformatoris continet transformator secundarius, fusos, et alios componentes electricos ad effectum conversionis tensionis ab 10 kV ad 0.4 kV. Armarium controlis est responsabile pro mensuratione datarum, controlis electricis, protectione, et aliis functionibus managementis.

In addition, this RMU features communication capabilities for ring network systems, enabling remote management and data transmission of the distribution system. Its high level of informatization significantly enhances grid reliability and maintenance efficiency.

2-in 4-out 10 kV solid-insulated ring main unit est instrumentum distributionis mediae tensionis importantem. Per design modularem, distribute secure et efficax potentiam altae tensionis, praebens supportum fortis pro operatione stabilis systematis electrici.

Why Does a Ring Main Unit Have Two Incoming Feeder Cabinets?

Ring main units typically have two incoming feeder cabinets (also known as "tie cabinets" or "feeder cabinets") to ensure reliability and safety and to meet the power grid’s requirements for dependable power supply.

Specifically, the dual-incoming-feeder design serves the following purposes:

• Reliability: If one incoming feeder cabinet fails, the other can serve as a backup, ensuring continuous system operation. The two feeders can act as mutual backups, enhancing the RMU’s overall reliability.

• Safety: The two incoming feeder cabinets enable isolation between incoming and outgoing circuits and support interlock functions. This isolation ensures personnel safety during maintenance and repair. Interlock mechanisms also control access and operation of the RMU, preventing unauthorized operation or entry.

• Operational Flexibility: The two incoming feeders allow switching operations. During testing or maintenance, one feeder can be de-energized for work while the other remains energized to maintain continuous power supply.

Having two incoming feeder cabinets improves the RMU’s reliability, safety, and operational flexibility, reduces the risk of power outages due to faults, and fulfills the grid’s requirement for reliable power supply.