Low-voltage distributed photovoltaic output estimation method

Abstract

The invention discloses a low-voltage distributed photovoltaic output estimation method in the technical field of power system automation, and aims to solve the problems that in the prior art, low-voltage distributed photovoltaic information collection is poor in real-time performance, data delay is more than one hour, real-time information is lost, and scheduling control requirements cannot be met. The method comprises: acquiring reference station output at a current moment; according to the output of the base station at the current moment and in combination with a predetermined association relationship between the marketing low-voltage distributed photovoltaic output and the output of the base station, matching the association relationship between the marketing low-voltage distributed photovoltaic output at the current moment and the output of the base station; estimating the low-voltage distributed photovoltaic output at the current moment according to the reference station output at the current moment and the association relationship between the matched marketing low-voltage distributed photovoltaic output at the current moment and the reference station output; the method is suitable for a power dispatching system, minute-level observation of low-voltage distributed photovoltaic output can be achieved, real-time performance is good, equipment investment does not need to be increased, and the actual application value is high.

Description

technical field

[0001] The invention relates to the technical field of power system automation, in particular to a low-voltage distributed photovoltaic output estimation method. Background technique

[0002] The characteristics of distributed photovoltaic output with strong random fluctuation and weak frequency / voltage support ability will have a great impact on the safe operation of the power grid. The power dispatching system urgently needs to achieve observable and measurable low-voltage distributed photovoltaics.

[0003] At present, low-voltage distributed photovoltaic information is collected only through the marketing and acquisition system, which has poor real-time performance, data delay of more than 1 hour, and problems such as real-time information loss, which cannot meet the needs of dispatch control. In addition, the scheme of directly collecting low-voltage distributed photovoltaic output through the dispatching data network has the shortcomings of "multiple po...

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