介绍summary
MGC3000 is a governor with double controller and single hydraulic conversion mechanism. Electro hydraulic conversion adopts servo motor, stepping motor or proportional servo valve and other single hydraulic conversion mechanism. Frequency measurement adopts programmable ontology and high-precision direct frequency measurement. The governor has the speed and acceleration detection, speed regulation, gateopening limit, tracking control, frequency variable structure, self diagnosis function and stability. The utility model has the functions of remote or automatic control of the unit under various operating conditions, and the speed controller can be connected with the computer monitoring system of the power station through the MB port, thereby realizing the network monitoring and control for the generating set.
It is applicable to the single / double regulating units of a series of mixed flow, axial flow blades and tubular flow units
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Dual controller
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Single (double) Regulation
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中、Large-scale governor
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Single electro-hydraulic redundancy converter
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The utility model has the advantages of simple structure, convenient disassembly and maintenance
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Reliable operation and little noise
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lMotor or proportional valve control system
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Electromechanical cabinet or electromechanical cabinet
外形尺寸图 Dimenensions
控制原理图 Control diagram
技术参数 Technical Parameter
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技术参数 Specifications
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技术指标 Technical Data
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Cabinet characteristics
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Dimension of cabinet of electromechanical joint cabinet
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800mm*800mm*1860mm (length * width * height) can be customized
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Electromechanical cabinet, electric cabinet size
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600mm*800mm*2260mm or 800mm*800mm*2260mm (length * width * height)
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Mechanical and electrical cabinet, dimension of machine cabinet
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800mm*800mm*1860mm (length * width * height) can be customized
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Cabinet weight
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300kg
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AC voltage standard for work
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AC220V±15%
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Operating DC voltage standard
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DC110V±10%，DC220V±15%
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Load capacity
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2500W（VA）
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Withstand voltage test
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1.5kV，1min
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Protection level
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IP65
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Operating temperature range
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-40～65℃
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Insulation impedance
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>10MΩ
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leakage current
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<1mA
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Control signal output
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Stepper motor
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Stepper motor drive outlet
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servo motor
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Servo motor drive outlet
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Proportional valve
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The analog channel current is 4 to 20mA
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Input characteristic
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Switch input
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DC24V, LED indicator, full isolation
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Analog input
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Voltage 0 ~ 10V, current 4 ~ 20mA, LED indicator light, completely isolated
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output characteristic
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On-off output
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DC24V, LED indicator, full isolation
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Analog output
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Voltage 0 ~ 10V, current 4 ~ 20mA, LED indicator light, completely isolated
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Frequency measurement specification
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Measurement mode
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Controller body frequency measurement
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Grid frequency
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Alternating current (30 ~ 150V), rated frequency from 90 to 110%
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Unit frequency
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Exchange (0.3 ~ 150V), 7.8 ~ 110 Hz
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Frequency measurement of gear disc
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Contactless proximity switch (DC24V power supply) 1~110 Hz
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Frequency measuring resolution
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0.001Hz
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Frequency measuring channel
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Unit residual pressure frequency, system frequency, unit gear speed measurement
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性能参数 performance parameter
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性能参数 Specifications
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技术指标 Technical Data
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Stability performance
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Relative value of unit speed swing
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<±0.15%
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Gateopening stable fluctuation value
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<0.1%
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Maximum nonlinearity of static characteristic curve
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<0.3%
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Speed dead zone
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<0.02%
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Dynamic characteristics
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Load wave crest not exceeding
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2次
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The ratio of guide vane (tE) to (tM)
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<8
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The ratio of blade closing time to tE (tM)
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<12
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Minimum relative speed of load rejection
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>90%
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(tSR) and (t0.8) ratios
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<5
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servomotor dead time
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<0.2s
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Double regulation blade accuracy
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<0.3%
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Auto Power Time
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20～120s
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Parameter setting of speed regulation system
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The adjustment range of the permanent slip coefficient is
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0～10%
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Slip adjustment range is
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0～10%
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Adjust the frequency range of the manual frequency on line
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0～±1.5%
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Speed adjustment range is
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90～110%
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The power adjustment range is
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0～105%
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Zero load and full load adjustment time
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20～300s
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Mode of operation, switching, relay changes
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<0.3%
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Dual power switching relay changes
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<0.1%
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Dual controller switching relay changes
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<0.1%
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Proportional gain Kp range
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0～20
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Integral gain Ki range
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0.01～10（1/s)
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Differential gain Kd range
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0.01～10s
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The speed regulation system can be utilized not less than
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99.99%
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The first trouble free interval is not less than
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30000
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选型表 Model code
