Performance index of diesel generator set
Performance index of diesel generator set1. Appearance requirements
(1) the boundary dimension, installation dimension and connection dimension of diesel generator sets all conform to the factory product design approved by the specified procedure
(2) the welding of the unit shall be firm, the welding seam shall be even, without defects such as welding penetration, edge biting, slag inclusion and porosity, and the welding slag flux shall be cleaned; The paint film should be even without obvious cracks and peeling. The coating should be smooth, without leakage, plating spots, rust and other phenomena; Unit fasteners should not be loose.
(3) the electrical installation of the diesel generator set shall conform to the circuit diagram, and the wiring connections of the unit shall be marked as not easy to fall off.
(4) diesel generator sets shall have well-grounded terminals.
(5) diesel generator unit signage is complete
Performance index of diesel generator set 2: insulation resistance and insulation strength
(1) insulation resistance: the insulation resistance of each independent electrical circuit to ground and between circuits shall be greater than 2M
(2) insulation strength: each independent electrical circuit of the unit should be able to withstand the ac test voltage for 1min on the ground and between the circuits, and there should be no breakdown or flicker.
Circuit voltage test voltage
< 100 v750v
P 100 v1440v
Diesel generator performance index 3: phase sequence requirements. The phase sequence of the terminal of the control panel of diesel generator unit should be from left to right or from top to bottom when viewed from the front of the control panel.
Performance index of diesel generator set 4: requirements for diesel generator to maintain readiness operation. Unit should have heating device, ensure the emergency start and rapid loading when the oil temperature, cooling medium temperature is not lower than 15 ℃
Performance index of diesel generator set 5: reliability check of automatic starting power supply and automatic stopping
(1) after receiving automatic control or remote control starting instructions, diesel power generation should be able to start automatically.
(2) when the unit fails for the third time after automatic start, the start failure signal shall be sent; When a standby unit is set up, the program start system should be able to automatically transmit the start instruction to another standby unit.
(3) the time from the automatic start instruction to the power supply to the load shall not exceed 3 minutes
(4) after successful automatic start of diesel generator, the initial load should not be less than 50% of the calibrated load.
(5) after receiving the automatic control or remote control stop instruction, the unit shall be able to stop automatically; With the utility grid and spare units, when the power grid, after returning to normal diesel generator should be able to automatically switch or automatic stop, its means of downtime outage delay time should comply with the regulations of product technical conditions.
Performance index of diesel generator set 6: automatic start-up success rate. The automatic startup success rate is no less than 99%.
Diesel generator performance index 7: no-load voltage setting range requirements. The unloaded voltage setting range of the unit shall not be less than 95-105% of the calibrated voltage.
Performance index of diesel generator set 8: automatic supply function requirement. The unit should be able to charge the starting battery automatically.
Performance index of diesel generator set 9: automatic protection function requirement. The unit shall be short circuit (no more than 250KW), over current (no more than 250KW), over speed, high temperature of water cylinder and low oil pressure protection.
Performance index of diesel generator set 10: sine distortion rate of line voltage waveform. Under no-load calibration voltage and calibration frequency, the sine distortion rate of line voltage waveform is less than 5%.
Performance index of diesel generator set 11: voltage steady state adjustment rate
250 kw > 250 kw or less
3% 2%
Performance index of diesel generator set 12: voltage transient adjustment rate
250 kw > 250 kw or less
20% 15%
Performance index of diesel generator set 13: voltage stability time
250 kw > 250 kw or less
2 s to 1.5 s or less or less
Performance index of diesel generator set 14: voltage fluctuation rate
250 kw > 250 kw or less
0.8% 0.5%
Performance index of diesel generator set 15: frequency steady state adjustment rate
250 kw > 250 kw or less
3% 3%
Performance index of diesel generator set 16: frequency transient adjustment rate
250 kw > 250 kw or less
9% 9%
Diesel generator performance index 17: frequency stability time
250 kw > 250 kw or less
5 s 5 s or less
Performance index of diesel generator set 18: frequency fluctuation rate
250 kw > 250 kw or less
0.8% or less 0.5% or less
Performance index of diesel generator set 19: voltage deviation under three-phase asymmetric load
Diesel generating sets under the three-phase symmetrical load of 25%, plus 25% at any phase calibration phase power of resistive load, the unit should be able to work properly, line voltage of the maximum or minimum value with the three line voltage average value of 5%.
Performance index of diesel generator set 20: noise
Average noise sound pressure at 1m from the diesel engine and generator of the unit:
250 kw > 250 kw or less
102 db (A) or less or less 108 db (A)
Performance index of diesel generator set 21: fuel consumption rate. The nominal power of the unit is within the range of 120<ne<600kw, and="" the="" fuel="" consumption="" rate="" is="" no="" more="" than="" 260g="" kw.="" h<="" span=""></ne<600kw,>
Performance index of diesel generator set 22: consumption rate of diesel generator. Unit calibration power >40KW, unit consumption rate is less than 3.0g/kw. H
Performance index of diesel generator set 23: operating test under calibration condition
Under the specified working conditions, the unit can operate normally and continuously for 12h(including 10% overload running for 1h) under the specified working conditions, and the diesel generator unit should be free of leakage and gas leakage.
Performance index of diesel generator set 24: remote control, telemetry and telemetry
(1) intelligent unit
Units above 200KW should be intelligent, and their monitoring content and interface requirements are as follows:
Remote control: on/off, emergency stop, switching the main standby unit.
Telescreen: working status (running/stopping), working mode (automatic/manual), mainly used units, over pressure, underpressure, over flow, frequency
Torque measurement: three - phase output voltage, three - phase output voltage, power output.
Computerized interface: it shall have a communication interface (rs-232 and rs-485/422) and be able to provide a complete communication protocol.
(2) non-intelligent units
No remote control, telemetry and telemetry requirements for 200KW or less non-intelligent units.
