Wind power, at present, is one of the most mature and feasible renewable clean energy. It brings a great opportunity to human and nature harmonic development. Due to outdoor operational environment, lightning stroke and harmful surge becomes one of the most austere challenges to its operation. For wind power system, due to its special operating geography location, height, highly integrated by a large quantity of sensitive electronic, electrical components/ expensive cost, surge protection is strongly required. PTG provides comprehensive and effective solutions for it.
In accordance to IEC 62305 and IEC 61400-24, below should be considered when categorizing surge protection zones and selecting/installing the SPD:
1. Lightning protection zone (LPZ 0…3);
2. Relative SPD test waveshapes (8/20 μs or 10/350 μs);
3. Voltage protection level
4. Voltage and standard of power supply (230/400 V; 400/690 V; TT/TN system);
5. Harmonic wave interference
In accordance to:
1. IEC 62305: Protection against Lightning
2. IEC 61312: Protection against Lightning Electromagnetic Impulse
3. IEC 61400-24: Wind turbines-Part 24: Lightning protection
4. IEC 61643-11: Low-voltage Surge Protective Devices
5. IEC 61643-21: Surge protective devices connected to telecommunications and signaling networks - Performance requirements and testing methods
T2 PE 320-40M2-40R protects power supply system; PD LA-24W protects signal system
T2 PE 275-40M2-20R protects power supply system; PD LA-24W protects signal system.
T2 PE 275-40M2-20R protects power supply system; PD LA-24W protects signal system.
T2 PE 275-40M2-30R protects AC power system; T3 PE 30-2W3-21R-S25 protects DC power system; PD series protects signal system.
T2 PE 760-25M2-30R and Highduty T2 PE 600-120W2-10R used for TNC system.
T2 PE 760-25M2-32R and highduty T2 PE 1000-40W2-10R / PE 1500-40W2-10R with TOV 1600/5s used for TNC system.
T2 PE 275-40M2-30R protects AC power system; T3 PE 30-2W3-21R-S25 protects DC power system; PD series protect signal system.
T2 PE 760-25M2-30R and PE 760-25M2-32R used for 400/690 Vac TNC system.
Type 1 SPD, PE 760-25W1-10R and PE 1000-25W1-10R used for 690 Vac and 1000 Vac IT power system.
PD HA-5W and PD HA-5W-2 used for high-frequency bus system or video transmission system.
Intermediate relays used for control system of wind power inverter, nacelle, tower base and pitch system.
