Product Overview
The YB-40.5 wind power box-type substation (hereinafter referred to as the box-type substation) is special equipment that steps up the 0.6~0.69 kV voltage generated by wind turbine units to 35 kV for grid-connection output. This product is newly developed by our company to meet the requirements of offshore wind farms for large single-unit capacity and high protection. The YB-40.5 wind power box-type substation has a complete trinity structure of HV switchgear, transformer and LV switchgear.
Type Designation
Service Conditions
- Altitude not exceeding 1000 m;
- Ambient temperature: -45℃ ~ +45℃;
- Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
- Installation site: free from fire, explosion hazards, conductive dust, chemically corrosive gases and violent vibration; if beyond the above conditions, users may consult our company.
Main Features
- HV switchgear, transformer and LV switchgear in one body, highly complete; low loss, low noise, good performance, and the tank adopts an anti-theft structure;
- Complete HV and LV protection, safe and reliable operation, simple maintenance; flexible and diverse connection schemes;
- The HV side is generally protected by a load switch-fuse combination; after one fuse blows, the three phases trip jointly. Load switches available: vacuum type, SF6 type etc.; a motorized operating mechanism can be provided for automation upgrades. The fuse is a high-voltage current-limiting fuse with striker, reliable in action and with large breaking capacity; main technical parameters are shown in the table below. Vacuum load switches are recommended for the HV load switch; the spring operating mechanism operates on AC 220 V, and a box-type substation protection device with heavy/light gas interfaces can be added; fuses are matched to the transformer capacity, with surge arresters and live-line indicators. The vacuum interrupter, isolating switch and earthing switch of the combination apparatus have reliable mechanical interlocks: the isolating and earthing switches can only be operated when the vacuum interrupter is open, and the isolating switch is interlocked with the earthing switch. The tripping device of the fuse is three-pole linked, and the fuses used are striker fuses. The striker can directly trip the load switch, ensuring rapid fault clearing.
- The LV main switch adopts an air (universal) or intelligent circuit breaker with selective protection.
- Low-loss, oil-immersed, fully sealed S9, S10 and S11 series transformers are selected; resin-insulated or NOMEX paper-insulated environment-friendly dry-type transformers are also available; all are fitted with rollers at the bottom for easy moving in and out.
- The enclosure material is a non-metallic environment-friendly tank, corrosion-resistant and salt-fog resistant. Composite panels, stainless steel plates etc. are also available.
- Operating corridors can be added on the HV and LV sides per user requirements.
Technical Parameters
The number and orientation of cable sleeves embedded in the foundation are determined by the user according to the number and orientation of the cables;
All embedded iron parts and supports in the foundation shall be earthed;
The number of earthing rods is determined by soil conditions; be sure to keep the earthing resistance below 4 Ω;
The earthing conductor can be made of 40x4 galvanized flat steel, and the earthing electrode of No.5 angle steel;
The joints between earthing electrodes and earthing conductors shall be welded and painted with asphalt for corrosion protection. When ordering the YB-40.5 wind power box-type substation, the full model of the product shall be provided, including the main circuit scheme number and auxiliary circuit scheme number.
Plan & Structural Dimensions
Ordering Information
The following information shall be provided when ordering:
- ◇ Full model of the product, including main and auxiliary circuit scheme numbers;
- ◇ Main circuit system combination sequence diagram;
- ◇ Installation layout plan;
- ◇ Auxiliary circuit electrical schematic;
- ◇ Setting parameters of voltage, current and time in the circuits;
- ◇ Other special requirements beyond normal service of the product;
- ◇ For other specific project requirements, please consult our company for design per specific requirements.
Related Products
Box-type substations of the same series and other types available:
