The factors that affect the power generation of PV power station include the installation mode of solar resource module, the capacity ratio of PV inverter, the series-parallel matching module, the shielding module, the temperature characteristic module, the power attenuation equipment, the stability of operation and maintenance, routine maintenance and the consumption of power grid, etc. These factors all affect the power generation of PV power station to varying degrees.
Some of these factors are controllable, such as dust shielding, weed shielding, equipment failure and shutdown, etc. Losses caused by dust shielding and weed shielding can be solved by regular cleaning and weeding, and losses caused by equipment failure and shutdown can be reduced by rapid fault elimination, thus improving power generation of power station.
Weather factors, such as attenuation design defects of components (front and rear row components shielding and left and right row components shielding nearby buildings shielding), are uncontrollable factors and can not be changed in the later operation and maintenance of the power station (unless large-scale technical renovation of the power station is carried out), which will continue to affect the power generation of the power station.
So how to ensure that a photovoltaic power station can have higher power generation after 25 years of efficient operation? Control should be mainly carried out from the following aspects:
This is a necessary condition if a photovoltaic power station is located in an area with poor solar energy resources or next to a mine, the power generation of the photovoltaic power station after completion will not reach the expected value.
2: Strict control of design, procurement and construction
Every link of design, procurement and construction of photovoltaic power station must be strictly controlled, otherwise the short board effect caused by any link will bring great difficulties to the later operation and maintenance of power station, and even cause it to be unable to operate and maintain, which may seriously affect the performance of the whole power generation system.
3: Standardized power station operation and maintenance management
Operation and maintenance management of power station is the core. In the whole life cycle of photovoltaic power station, operation and maintenance account for 98% of the time period. Good operation and maintenance management of power station is the fundamental guarantee of power generation.
If the operation and maintenance management of the power station is not in place, such as equipment failure and shutdown and not responding in time (even not responding), it will inevitably affect the power generation of the power station and the power loss will become larger and larger with the increase of failure time. On the contrary, if the operation and maintenance management of the power station can be standardized and refined, the operation and maintenance personnel will immediately respond to the failure and quickly troubleshoot and eliminate defects on the spot, then the equipment failure loss can be effectively reduced and the power generation of the power station can be improved.
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