Supply and exhaust ventilation, air conditioning and heating system
Supply and exhaust ventilation, air conditioning and heating system (hereinafter VCHS) is applied for providing specified temperature conditions in metro substation rooms.
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internal air temperature:
- in summer:
in switchgear rooms max. + 30 °С;
in accumulator batteries room max. +25 °С;
in transformer hall, cable cellars — max. +35 °С;
in service premises — max. + 27 °С.
- in winter:
in service premises min. + 18 °С;
in accumulator batteries, switchgear rooms, and cable cellars min. +16 °С. -
external air intake into transformer hall;
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external air intake into switchgear rooms and accumulator batteries room;
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exhaust air release from transformer hall, switchgear rooms;
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exhaust air release above roof ridge from accumulator room and WC room;
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exhaust air release from cable cellars, if necessary;
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service premises ventilation: air intake through opened windows, and air release through WC room and production premises.
VCHS includes:
- actuating mechanisms (chillers, air conditioners, blowers, fan coil units, convectors, pumps, damper valves, air supply units, etc.);
- sensors: temperature, pressure, air pollution, dry running, humidity, etc;
- actuating mechanisms control equipment with recording signals from sensors and operator’s control actions.
Control equipment is installed in metal cabinets.
Control cabinets automatics involves local or remote control of ventilation and air conditioning system actuating units, automatic tripping of blowers, air conditioners, fan coil units, convectors in case of fire alarm in substation.
Operation modes selection elements, controls, system and separate units condition light signaling are located on cabinets’ front panel. Operative control system is implemented on the basis of panel industrial logic controllers. Controller includes display and buttons. Controllers HMI includes monitoring, settings, lists of alarms and events windows. Flexible system customization according to operating requirements is possible due to settings availability. Condition sensors subsystem allows diagnostics of separate system units.
Control system cabinets provide communication with remote control system. System, units and mechanisms condition signals are transferred into remote control system. System provides remote control set signals testing.
Failure alarms are displayed on cabinet control panel, and transferred to remote control system for personnel informing.
Control system cabinets types:
Switchgear room ventilation and air conditioning control cabinet
Switchgear room ventilation and air conditioning control cabinet is provided for switchgear room ventilation and air conditioning control. Switchgear room ventilation and air conditioning control cabinet provides overload protection and protection against short circuits in blowers, pumps and air conditioners.
Transformer hall ventilation and air conditioning control cabinet
Transformer hall ventilation and air conditioning control cabinet is provided for transformer hall ventilation and air conditioning control. Transformer hall ventilation and air conditioning control cabinet provides overload protection and protection against short circuits in blowers, pumps, air conditioners and dampers valves.
Accumulator room ventilation control cabinet
Accumulator room ventilation control cabinet is provided for accumulator room ventilation and air conditioning control. Accumulator room ventilation control cabinet provides overload protection and protection against short circuits in blowers and air conditioner.
Technical parameters
VCHS system technical parametersDocuments
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