Electricity generation methods include: thermal power generation, hydroelectric power generation, nuclear power generation, wind power generation, geothermal power generation, etc.
Power generation refers to the production process of using power generation devices to convert raw energy such as water energy, thermal energy from petrochemical fuels (coal, oil, natural gas), nuclear energy, etc. .in electrical energy.
Electricity generation is used to meet the needs of various departments of the national economy and people's lives.
Nowadays, fossil fuels are still used as the main form of electricity generation, but fossil fuel resources are not plentiful and are becoming increasingly depleted. Human beings have graduallystarted using solar energy, wind energy and geothermal energy. , ocean energy and other energy sources to generate electricity.
What is the function of the collector ring in a wind turbine?
There are many types of wind turbines. By their structure, they can be divided into those with gearbox and those without. gearboxes. The blade angle can be divided into fixed pitch and pitch change. The pitch change method can be divided into hydraulic pitch change and electric pitch change. In total there are no less than four or five types. ?
If the mechanism is different, the hub size will be very different. There are several lightning protection systems for wind turbines. The weather mount on top of the machine gun is equipped with lightning rods. are connected to the ground grid by wires. There are metal blocks at the ends of the blades,leading to a ground grid from inside the blade, a lightning protection carbon brush between the wheel hub and the nacelle, and between the nacelle and the nacelle. turn, which reduces contact resistance and improves conductive efficiency. The tower and the tower connection flange are also connected via a flexible wire. There are also lightning protection modules, surge protectors, etc. in the electrical circuit, which can protect and cause lightning. There are many books on this topic, most of them are published by China Electric Power Publishing House. There is a specialty store in Beijing. If I have the CAD drawings, I won't tell you.
The inspection qualification standards are:
Wind turbine acceptance specifications GB/T 20319-2006
JB/T wind turbine design requirements 10300-2001
p>Safety requirements for wind turbines GB 18451.1-2001
Specifications pfor the assembly and installation of wind turbines GB/T 19568-2004
Wind turbines Part 1: General technology Conditions GB/T 19960.1-2005
Wind turbines Part 2: Methods of general tests GB/T 19960.2-2005
etc.~~
Measuring wind force by sensor Is the generator placed on the nacelle?
L The horizontal axis wind turbine has a collector ring, unlike the vertical axis.
Because the wiring of the main motor of the horizontal axis wind turbine is horizontal and there is a rotating body which must be aligned with the wind speed, the front part rotates.
< p>The function of the collector ring is to rotate 360 degrees without any obstacles and pass the wires vertically downward.If the collector ring is not used, the three wires of the main unit will be easily tangled and twisted when the main unit is rotating. In fact, every wind power generation equipment manufacturer has sensorsof vibrations, but the location and number are different. But they will not be placed on the cabin, but on the main cabin equipment. (Maybe my understanding is ambiguous)
Take the reset MM82 as an example. There are two sensors to measure vibration, one is under the generator and the host vibration analyzer on the main frame. Another vibration analyzer on the elastic support of the gearbox.
They are all installed on the main device.
Let me say a few more words. The main shaft, gearbox and generator are all in the transmission system of the wind turbine. Therefore, in principle, it is effective to install vibration equipment at any position. but the safety of the wind turbine must be taken into account. The operating angle is more effective when installed on high-speed transmission parts.
I hope this helps!