2016年2月9日星期二

Fundamental Composition and Improvement Trend of Transformer Substation




Transformer substation is energy appliance in electric power system that switches voltage, accept and distribute electric energy and manage electric flowing direction as well as adjusting voltage. It connects power grid of voltage with different levels by transformer. Here, the equipment with the function of switching energy is transformer. Except for this, additionally, it consists of switching device opening and closing circuit, generatrix assembling currents, mutual inductor for measuring and controlling, meter, relay protection device, lightning protection device and dispatching communicator. Some, like Combined Substation even contains reactive-load compensation gear.
Transformer
Transformer will be the primary device in transformer substation. Supplied by transformer producers, you will find two-circuit transformer, three-winding transformer and auto-transformer, also transformer specially designed by transformer manufacturer, whose higher and low stress share a winding within each phase by extracting 1 head from high stress winding to act as the outlet of low stress winding. The voltage strength is direct proportion to winding quantity whereas the present is in inverse proportion to it.
Switching device
Switching device consists of breaker, disconnector, Load Breaker Switch and higher voltage fuse which are all devices for connecting or breaking the circuit. Here, breaker is used to connect and break circuit in the condition of energy method regular operation and in the condition of breakdown automatically break the circuit from breakage device below the protection of relay protection device. Also, it has the function of automatically reclosing lock. For other switching devices, some like ring primary unit switchgear are mainly applicable for 36kv switchgear for the moderate voltage.
Much more intelligent
Intelligent transformer substation( Intelligent Switchgear) has traits of informatization, automatization and interaction. Intelligence primarily embodies in two aspects, intelligent device and intelligently sophisticated application. Intelligent device realizes organic separation of one-time device and intelligent element. To be exact, intelligent device assists one-time device to finish transmitting and distributing electric energy at meanwhile of measuring, controlling, maintaining and metering.
More secure and green
Transformer substation technical advance ensures efficiency and precision in information transmitting which promotes energy supply stability and guarantees energy grid more stable operation. With additional adaptation, modularization and standardization in intelligence technologies, the info collecting, transmitting and processing become much more standard, effectively supporting ??one-whole regulation and one-whole operation?ˉ. Detection measures like Integration video linkage and state evaluation nicely make sure pr¨|cised sequential manage and unattended operation. Also, it achieves power saving and emission reduction by promoting device resource utility ratio and stable power provide(Power Distribution Box Manufacturer).

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