Why Is The Installation And Commissioning Of High-voltage Disconnect Switches In Substations Such A Large Workload?

The installation of primary equipment in a substation involves numerous subsystems, and the installation of high voltage isolator switch, as a mechanical connection point for voltage level conversion and maintenance, is not as straightforward as simple mechanical positioning. First, the on-site foundation must be positioned strictly according to the design drawings, and the installation accuracy of each component must be perfectly matched with the high-voltage busbar system and supporting structure. The installation process involves a large number of electrical and mechanical coordination operations, which requires a high level of technical skill from the construction personnel and consumes a significant amount of on-site time.

After entering the commissioning phase, the commissioning team needs to conduct multiple performance verifications on hv isolator. Commissioning work covers mechanical action testing, electrical insulation testing, auxiliary circuit function checks, and confirmation of linkage with the automation system. Compared with low-voltage equipment testing, the commissioning of hv isolator switch is often carried out under high-voltage conditions, with complex test procedures, high requirements for data acquisition and analysis, and a naturally longer process time. The standard substation commissioning process also includes a series of tests on protection devices and control systems. These circuits related to the operation of high voltage electrical isolator must be checked one by one to ensure the correct response of isolator high voltage in the high-voltage system.