When it comes to the availability of wind turbines or wind farms, we must be familiar with them. Now we introduce a new “availability†to everyone through comparison. This new indicator has been applied on land-based wind power in Europe and is now being applied to the sea. Wind power application development.
1. Hour Availability (Hour Availability)
This is an indicator of usability that we are familiar with. We use time as the statistical object, and consider the shutdown caused by external causes as available and unavailable. The distinction is between the hourly utilization rate of integrated power generation (GHA) and the hourly availability of technical power generation (THA). ).
1.1 Comprehensive Hourly Availability (GHA, Gross Hour Availability)
1.2 Technical Hour Availability (THA, Technical Hour Availability)
Note:
Total time: statistical duration, such as 8760 hours a year
Cause of Wind Farm Downtime: Refers to the downtime of the wind farm due to operation and maintenance, faults, and other reasons. It can include scheduled and unplanned downtime for turbines and BOPs.
External causes of downtime: Refers to the fan downtime caused by internal factors other than the wind farm, such as environmental conditions (high wind speed, icing, extreme temperatures), power grid emission, access to system failure and other uncontrollable wind farm factors
2. Energy Availability
Taking the amount of electricity generation as the statistical object, and also considering the shutdown caused by external factors as available and unavailable, it is divided into the integrated power generation availability (GEA) and the technical power availability (TEA).
2.1 Comprehensive Energy Availability (GEA, GrossEnergy Availability)
2.2 Technical Energy Availability (TEA, Technical Energy Availability)
Note:
Actual power generation: Wind farm metering
Loss of power generation due to wind farm: refers to the calculation of power loss due to operation and maintenance, faults, etc. within the wind farm, and is the same as the statistical rules in the hourly availability of power generation.
Loss of power generation due to external causes: Calculation of power loss caused by factors other than the internal causes of wind farms, same as the statistical rules in the availability of power generation hours
Calculated loss of power generation: According to the data collected by the wind measurement equipment in the engine room and on the site, and calculated with reference to the power generated by other fans.
3. Significance of using power generation availability indicators
The goal of the wind farm operation and maintenance will be changed from improving the running time of the wind turbine to increasing the power generated by the wind turbine. In layman's terms, the wind turbine is designed to operate as much as possible under conditions of good wind speed.
3.1 Benefits for Developers
Pre-development: Locked capacity availability indicators in wind turbine operation and maintenance contracts can improve the accuracy of power generation forecasts and reduce project investment risks
Late-stage operation and maintenance: Take the power generation availability index as an assessment index for wind turbine operation and maintenance, which can guide operation and maintenance decision-making and improve the operation and maintenance benefits.
3.2 Requirements for Operation and Maintenance Parties
According to the prediction of environmental conditions (wind speed, weather, etc.), the scheduled maintenance plan is flexibly adjusted to achieve the optimal power generation requirements; the cost and revenue of the fault repair are compared to achieve the optimal economic efficiency requirements.
Perkins 76-200KW Diesel Generator
Perkins 76-200Kw Diesel Generator,Perkins Silent Type Diesel Generator,Perkins Container Type Diesel Generator,Perkins Super Silent Diesel Generator
Shanghai Kosta Electric Co., Ltd. , https://www.ksdgenerator.com