Smart and Brave Guardian of Wind Power Generation, full Analysis of Hydraulic Pitch Technology (II)-Qingdao Paguld Intelligent Manufacturing Co., Ltd.

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Smart and Brave Guardian of Wind Power Generation, full Analysis of Hydraulic Pitch Technology (II)

Release time:

2024-05-29

Abstract

In the typhoon season, the safety and stability of wind power equipment is very important. Among many wind power pitch technologies, hydraulic pitch has become the patron saint of typhoon weather due to its excellent performance and reliability. Today, we will analyze in detail the advantages of hydraulic pitch in the process of anti typhoon.

1. Hydraulic pitch: the patron saint in the typhoon

Low failure rate, stable and reliable

In extreme weather conditions such as typhoons, wind power equipment needs to withstand a huge test. The hydraulic pitch system provides a solid backing for wind power equipment with its low failure rate and high stability. Even in the event of a typhoon or other emergency failure, the hydraulic pitch can ensure smooth feathering action and effectively avoid safety accidents caused by pitch failure.

Large output, rapid response

When a typhoon strikes suddenly, wind power equipment needs to respond quickly to protect its own safety. With its powerful output and excellent response characteristics, the hydraulic pitch system can emit huge energy in a very short time, ensuring that the blade can successfully complete the paddle protection action under heavy load, and effectively avoid the occurrence of overspeed accidents.

No backup power supply, safe and worry-free

In typhoon weather, power supply may be seriously affected. However, the hydraulic pitch system does not need to rely on backup power for feathering operations. It relies on the accumulator to push the hydraulic cylinder for feathering, which ensures the safe operation of the unit in the case of power loss. Compared with the battery or super capacitor, the safety and reliability of the accumulator performance and life is better.

Good cushioning, reduce load

Hydraulic pitch system through the hydraulic cavity to push the blade pitch operation, this way has a good buffer. In the event of a sudden shutdown, it can greatly reduce the load of the whole machine, effectively avoid excessive load on the whole unit in the event of a typhoon or other emergency, thereby protecting the tower and blades from damage.

Self-locking mechanism to prevent overspeed

The hydraulic pitch system is equipped with a blade bearing self-locking mechanism (hydraulic mechanical lock). This innovative design plays a great role in emergency failure or typhoon weather. It ensures that the blade can only turn in the feathering direction and can lock the blade in the feathering position. In this way, even if the typhoon is violent, the locked blades cannot be blown back to the windward position, thus avoiding the problem of overspeed of the wind wheel.

In short, the hydraulic pitch system with its excellent performance and reliability in the anti-typhoon process showed five advantages. It not only ensures the safe and stable operation of wind power equipment, but also greatly reduces the failure rate and maintenance costs. In the future development of wind power, the hydraulic pitch system will continue to play an important role, bringing more safe, efficient and reliable technical support for the wind power industry.

2. Advantages of hydraulic pitch for future high-power units

The hydraulic pitch system has many significant advantages for the future of high-power units, which make it have a wide range of applications in the field of wind power generation.

Excellent synchronization of oil cylinder, balanced output without danger

Most high-power units use double hydraulic cylinders to drive a blade. Because of its uniqueness, the hydraulic pitch system shows its excellent cylinder synchronization in the wind turbine, and effectively avoids the problem of uneven output of the hydraulic cylinder.

Simple expansion

When it is necessary to increase the capacity of the wind turbine generator set or to adapt to a larger size of the wind turbine blade, the hydraulic pitch system can be expanded by increasing the number of motors and accumulators and increasing the stroke of the oil cylinder, while the cost increase is relatively small.

Piston accumulator guarantee, emergency feathering worry-free

Emergency feathering is realized by piston accumulator, and there is no problem that backup power supply fails to feather. The design of the piston accumulator is simple and easy to maintain. Its work is stable and reliable, long service life and low maintenance cost.

Millisecond response, independent pitch, reduced cost

The millisecond response time is used to perform pitching, which is more suitable for independent pitching and reduces the cost of the whole machine.

Independent Pitch ("IPC")

Independent pitch is a pitch technology of wind turbine, which allows different pitch commands to be issued according to the actual load of each blade, and the change of pitch angle is controlled, so that each blade can obtain different target positions. This technology helps reduce unbalanced fatigue loads on the impeller face, thereby regulating fan speed and fan power output, improving overall efficiency and reliability.

The advantages of independent pitch control technology include:

Optimizing the structure of the unit: By independently controlling the pitch angle of each blade, the fatigue load of each component of the unit can be reduced, and the wind turbine can be designed to achieve lightweight, large-scale and more flexible structure.
Improve the utilization rate of wind energy: in the low wind speed area, the wind turbine with lightweight design can improve the utilization efficiency of wind energy in the low wind speed area.
Improve the operating life of the unit: improve the load of each component of the unit and reduce the operation and maintenance cost of the wind turbine.

Advantages of Hydraulic Pitch for IPC Working Conditions

Compared with the traditional unified pitch system, the adjustment frequency of independent pitch is higher, and the response speed and accuracy of the system are also higher.

Since the independent pitch system requires frequent pitch angle adjustment, the pitch bearing is subjected to large loads and friction, which may cause the pitch bearing tooth surface (electric pitch) to wear more easily.

The gap-free fit between the two ends of the hydraulic cylinder and the drive shaft is required. This gap-free fit can reduce friction and vibration, and improve the reliability and life of the system.

These advantages make the hydraulic pitch system an ideal choice for high-power units, which helps to promote the sustainable development and progress of wind power generation technology.

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