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发明公开
CN108008257A 不同波前时间冲击放电电压修正方法、修正装置及计算方法 无效 - 驳回

不同波前时间冲击放电电压修正方法、修正装置及计算方法
摘要：
本发明提供了一种不同波前时间冲击放电电压修正方法、修正装置及计算方法。其中，该修正方法包括如下步骤：对预先建立的特高压边相I串全尺寸塔头间隙试品进行放电特性试验，以获得50％放电电压特性曲线；根据50％放电电压特性曲线确定放电电压与波前时间的关系式。本发明中，先对试品进行放电特性试验，从而获得50％放电电压特性曲线；再根据50％放电电压特性曲线确定放电电压与波前时间的关系式，进而得出了边相I串典型间隙不同波前时间冲击放电电压与波前时间修正关系式，后续对放电电压进行计算时直接利用关系式即可，保证了计算结果的准确性，进而保证了空气间隙绝缘配置的设计方法的准确性。
摘要（英）：

The invention provides an impulse flashover voltage correction method under different front time, a correction device and a calculation method. The correction method comprises the following steps: a pre-built extreme-high voltage edge phase I-string full-size tower head gap test object is subjected to a discharge characteristic test to acquire a 50% discharge voltage characteristic curve; and according to the 50% discharge voltage characteristic curve, the relation between the discharge voltage and the front time is determined. The test object is subjected to the discharge characteristic testfirst to acquire the 50% discharge voltage characteristic curve, the relation between the discharge voltage and the front time is then determined according to the 50% discharge voltage characteristiccurve, the correction relation between the impulse flashover voltage and the front time of edge phase I-string typical gaps under different front time is further obtained, the relation is directly used when the flashover voltage is calculated later, the calculation result accuracy is ensured, and the accuracy of an air gap insulation configuration design method is further ensured.

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