The invention belongs to the field of electric power, and particularly relates to a power grid deviation self-adaptive processing method. The method comprises the following steps: 1, inputting data; obtaining all harmonic signals generated by all the charging piles; 2, performing data fitting; performing curve fitting on data of the same charging pile, the same harmonic frequency and different time to obtain curve formulas of different harmonics; 3, superposing odd harmonic data; 4, performing rough judgment; judging whether odd harmonic data superposition exceeds a threshold value or not; ifsafe, executing the step 9, if judgment is still needed, executing the step 5, and if not safe, giving out an alarm to cut off the power supply; 5, superposing even-order harmonic data; 6, comparing and judging; judging whether the even harmonic exceeds a threshold value or not, if safe, executing a step 9, and if not, executing a step 7; 7, accumulating all harmonics; 8, re-judging; and 9, performing prediction and judgment. The method has the advantages of being rapid in calculation and accurate in prediction.

    本发明属于电力领域,具体涉及一种电网偏差自适应处理方法。它包括:步骤1:数据输入;得到所有充电桩产生的所有谐波信号;步骤2:数据拟合;取同一充电桩,相同谐波次数,不同时间的数据进行曲线拟合,得到不同谐波的曲线公式;步骤3:奇数次谐波数据叠加;步骤4:粗判断;判断奇数次谐波数据叠加是否超出阈值;若安全则执行步骤9,若仍需判断则执行步骤5,若不安全则发出报警,切断电源;步骤5:偶数次谐波数据叠加;步骤6:对比判断;判断偶次谐波是否超过阈值,如果安全,执行步骤9,如果不安全则执行步骤7;步骤7:对所有谐波进行累加;步骤8:再判断;步骤9:预测和判断。本发明的显著效果是:计算快捷,预测准确。


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    Title :

    Power grid frequency deviation self-adaptive processing method


    Additional title:

    一种电网频率偏差自适应处理方法


    Contributors:
    XIE CHENLU (author) / LI HONGCHENG (author) / BIAN WENHAO (author) / JU PENG (author) / XU CHENG (author) / HUANG JIAN (author) / PAN MING (author) / HAO FEIFEI (author)

    Publication date :

    2021-01-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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