Device and method for photovoltaic short-term load prediction of power distribution network

A load forecasting and power grid load technology, applied in forecasting, calculation, instrumentation, etc., can solve the problems of ignoring the difference of load characteristics, large amount of calculation, and low forecasting accuracy
CN106779253AInactive Publication Date: 2017-05-31ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

An embodiment of the invention of a device and a method for photovoltaic short-term load prediction of a power distribution network and aims to solve technical problems of high calculation quantity and error accumulation effects in single prediction of a large quantity of load nodes of an existing power distribution network and low prediction precision in superposition prediction of all loads in a whole area due to neglect of characteristic differences of different loads. The method for photovoltaic short-term load prediction of the power distribution network includes: S1, preprocessing missing data and bad data of net load power data formed by distributed photovoltaic and grid load; S2, dividing the net load power data meeting preset conditions into five cluster loads according to a fuzzy C clustering method; S3, respectively subjecting each cluster load to load prediction according to a similar day and support vector machine based short-term load prediction method, and subjecting load prediction results of each cluster load to superposition.
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Description

technical field

[0001] The invention relates to the technical field of electric power system load forecasting, in particular to a method and device for short-term load forecasting of distribution networks considering photovoltaics. Background technique

[0002] With the continuous development of grid-connected photovoltaic power generation technology and the increase of policy support, the cost of photovoltaic power generation has been greatly reduced, and the penetration rate of distributed photovoltaic power generation in the distribution network has continued to increase, making the power load of the distribution network larger. The changes have had a certain impact on distribution network planning and power dispatching. At the same time, the intermittent and random defects of distributed photovoltaics also make the load forecasting work more complicated. If the impact of distributed photovoltaic changes on the load of the power system is not considered, and the load for...

Claims

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