Network-based small-current grounding system fault line selection method

Abstract

The invention discloses a network-based small-current grounding system fault line selection method. The method includes the following steps that: step (1), M0 is set to be equal to 0, since the number of data packets is always greater than or equal to 0, the data packets can be set to cover the data of all subsequent flow packets, and therefore, the comprehensiveness of data storage can be ensured, with the step (1) adopted, stable data packet transmission condition of a wireless network within one minute can be obtained, and the comparison of subsequent data can be facilitated; step (2), Mi is set to be in one-to-one correspondence with Xi; and step (3) Xi is set to be in one-to-one correspondence with Yi, wherein i is equal to 0, 1, 2, 3...n, and the recursive relationships between storage capacities can be clarified according to the previous setting, and a network identifier can be known, a node required to be connected can be determined according to the recursive relationships; and (4) if a bug appears, output about "a result is wrong" is executed, and a program is terminated, and with the step (4) adopted, the method is allowed to go wrong, once an error occurs, the program is terminated, and an operator can correct the error.

Description

Technical field [0001] The invention belongs to the field of network technology, and particularly relates to a network-based fault line selection method for a small current grounding system. Background technique [0002] In our country's power distribution network, the neutral point is generally grounded through a high-resistance resistance or through an arc suppression coil. In a power grid whose neutral point is grounded in this way, when a single-phase ground fault occurs, the short-circuit current can only form a small current loop through the ground capacitance or impedance, which is called a small current grounding system. The current grounding method has many advantages in terms of ensuring operation, overvoltage level, equipment insulation level, and economy, so it has been used in my country's urban and rural medium and low voltage power grids. [0003] In the low-current grounding system where the neutral point is not grounded or the arc suppression coil is grounded, the...

AI Technical Summary

Problems solved by technology

However, the line selection devices manufactured according to these fault line selection principles do not yet have the reliability and accuracy for popularization and application in power systems.