Voltage sag state series connection type and parallel connection type compensation equipment treatment method

Abstract

The invention relates to the technical field of power supply, in particular to a voltage sag state series connection type and parallel connection type compensation equipment treatment method. The treatment method of series-connection type compensation equipment and parallel-connection type compensation equipment is formulated according to different connection modes of production line equipment. Compared with a traditional universal treatment method, the treatment method is higher in pertinence and better in adaptability; the target equipment is selected for the whole production line instead of a single user during treatment, so that the treatment efficiency is effectively improved, and the calculation speed is higher; after the power grid access level is counted by software, the economic loss is divided into two modes for calculation, the treatment effects of the series type compensation equipment and the parallel type compensation equipment are calculated by combining different failure rates of the series type compensation equipment and the parallel type compensation equipment; and according to the treatment effects, investment payback periods of the series-connection type compensation equipment and the parallel-connection type compensation equipment are obtained, workers can conveniently understand all-around and multi-field understanding of all production lines in the voltage sag state in advance, and the use effect is poor.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a treatment method for series and parallel compensation equipment in a voltage sag state. Background technique [0002] Voltage sag generally refers to voltage drop. Generally, transient power quality problems mainly refer to: voltage sag, voltage swell and short-term power failure, etc. Voltage sag is defined as the rapid drop of the effective value of the supply voltage to 90%-10% of the rated value. The duration is 0.5 cycle-1 minute. Under the same duration, the effective value of the voltage rises rapidly to 110%-180% of the rated value, which is defined as a voltage swell; if the duration exceeds 1 minute, it is considered to be The voltage is low or the voltage is high; short-term power failure is defined as the complete loss of power supply, and the duration is at least 1.5 cycles. The frequency of voltage drop is much higher than that of short-time power failure, ev...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a treatment method for series and parallel compensation equipment in the voltage sag state, which has higher pertinence, better adaptability, high treatment efficiency, faster calculation speed, and is convenient for staff to pre-adjust voltage temporarily. In order to solve the above-mentioned background technology, the existing compensation equipment treatment method for voltage sag state is a general-purpose compensation equipment treatment method, which cannot The connection mode between production line equipment and compensation equipment is further divided, the adaptability is not high, and the accuracy of the calculation results in the treatment process is not high, resulting in the staff's understanding of each production line under the state of voltage sag is not accurate enough, and the use effect is not good good question

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