Electric power system outage cost estimation method based on historical loads of distribution transformer terminals

Abstract

The invention discloses an electric power system outage cost estimation method based on historical loads of a distribution transformer terminals. The electric power system outage cost estimation method comprises the steps of: S1, obtaining numbers of an outage switch and a looped network power supply switch; s2, analyzing distribution transformers influenced by outage; S3, reading historical load values of each distribution transformer per each 15min, and completely adding together; S4, using the total historical load value of the distribution transformers in the same period of the last week as a reference value, multiplying by a growth factor K, and thereby working out load loss of each time point in the outage period; S5, working out electric quantity loss of different load time points of each distribution transformer in the outage time slot by an integral method; S6, obtaining sold electric quantity and general electricity sales income of each distribution transformer in the last month through a marketing system, and then working out the average price of the sold electricity of the distribution transformers; S7, working out electric charge loss of each distribution transformer influenced by outage at a certain time point; S8, adding together all electric charge loss of the distribution transformers influenced by outage at the certain time point; S9, adding together loss at all time points in the outage time slot. According to the electric power system outage cost estimation method based on historical loads of distribution transformer terminals, loss of electric quantity and electric charge in the outage are accurately and efficiently analyzed.

Description

technical field [0001] The invention relates to a method for estimating power failure loss of a distribution transformer terminal in a power system, in particular to a method for estimating power failure loss of a distribution transformer terminal in a power system based on historical loads. Background technique [0002] Counting the power failure loss of an area or a line or even a transformer is one of the most common statistical items in power departments at all levels. However, the load and power are constantly changing, so the traditional statistics of power failure losses can only be based on the real-time power loss of the line at the time of power failure. In other words, the real-time load value at the moment before the power outage can only be multiplied by the time of power outage, and then multiplied by the unit price of electricity sales of the category to get the estimated value of electricity cost loss. It is impossible to provide a more accurate loss estimate,...

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Problems solved by technology

[0002] Counting the power failure loss of an area or a line or even a transformer is one of the most common statistical items in power departments at all levels. However, the load and power are constantly changing, so the traditional statistics of power failure losses can only be based on the real-time power loss of the line at the time of power failure. In other words, the real-time load value at the moment before the power outage can only be multiplied by the time of power outage, and then multiplied by the unit price of electricity sales of the category to get the estimated value of electricity cost loss. It is impossible to provide a more accurate loss estimate, that is, power outage loss Estimate error is large

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