Method for adding cut-off 10 KV circuit linear pole section switch with load

Abstract

The invention relates to a method for adding a cut-off 10 KV circuit linear pole section switch with load. The method comprises the steps that a bypass live working method is used for insulation shielding on electrified bodies and grounded bodies in the working range; a temporary isolation cross arm is mounted to shift a live wire; middle-phase two-side tension-resistant porcelain bottle strings and a two-side phase tension-resistant cross arm are mounted, a wire tightener is mounted to tighten three-phase wires and check and ensure normal through-flow; middle-phase wires are cut by pincers and fixedly connected with the tension-resistant porcelain bottle strings, a middle-phase wire tightener and a safety rope are dismantled and insulation shielding is completed, the two-side phase tension-resistant cross arm provided with the section switch is mounted below a tension-resistant cross arm, the tension-resistant porcelain bottle strings are mounted and insulation shielding is completed, working on two-side phase wires is performed with a construction method with the middle phase, and then shielding is completed. Three-phase leads of the switch are connected to the three-phase wires, normal through-flow is checked and ensured, and the work is finished. The method doesn't affect normal power supply for the user, power failure time is reduced, the power supply volume is large, and the economic benefit is increased.

Description

technical field [0001] The invention relates to a method for installing a section switch in a power grid, in particular to a method for adding a section switch to a straight pole of a 10KV line with load breaking. Background technique [0002] The installation of section switches on 10KV lines is an effective measure to improve the reliability of power supply. Each line is divided into several sections, which can reduce the scope of power outages and reduce the average power outage time of users every year, thereby improving the reliability of power supply in the distribution network. [0003] However, due to the early design and construction of the line, the long-term planning of the existing line and the branch line is not comprehensive, resulting in power outages during user maintenance and troubleshooting. The power supply company must stop most of the main lines or even the entire line to cooperate, which makes Many unrelated users were affected by the outage. Because ...

AI Technical Summary

Problems solved by technology

Therefore, it is imperative to install a section switch on the straight pole of the 10KV line. Since the installation of the section switch on the straight pole of the 10KV line is usually performed by a power outage operation method, this will inevitably lead to a power outage for a large area of ​​users and cause economic losses to the user. The formulation of power outage operation plan is often affected by the reliability requirements of important users' power supply

Therefore, adopting the method of blackout operation to disconnect the 10KV line straight pole and install a section switch will not only bring a lot of troubles to the formulation of the plan, but also cause economic losses to the users, and also cause unnecessary economic losses to the power supply enterprises, affecting the reliability of power supply. property, reducing the economic benefits of the enterprise

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