A method for adjusting the voltage of photovoltaic grid-connected points in different regions
A sub-regional and voltage technology, applied in photovoltaic power generation, AC network voltage adjustment, single-network parallel feeding arrangement, etc., can solve problems such as different ratios of resistance and reactance, and achieve the effect of aggravating the impact and avoiding frequent triggering of voltage regulation.
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[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below according to the accompanying drawings and embodiments. It should be understood that the specific implementations described herein are only used to explain the present invention, but not to limit the present invention.
[0046] The method for adjusting the voltage of photovoltaic grid-connected points in this sub-region includes the following steps:
[0047] (1) Set the voltage constant value, including: voltage upper limit adjustment threshold U hdb , Locking voltage upper limit adjustment threshold U hlmt , voltage lower limit adjustment threshold U ldb , Locking voltage lower limit adjustment threshold U llmt , voltage regulation return threshold U th ; The voltage setting values satisfy the following relationship: U llmt ldb ldb +U th hdb -U th hdb hlmt .
[0048] (2) Divide the area according...
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