110kV ~ 10kV smart vehicle mobile substation
Overview
Intelligent vehicle-mounted mobile substations are mainly loaded in one or more vehicles: zinc oxide lightning arresters, high-voltage switches (GIS or HGIS combination appliances), power transformers, medium-voltage switch cabinets, integrated AC and DC power systems, measurement, monitoring and protection devices Combined on a semi-trailer. The concept of "mobile" in the substation is embodied in the form of a semi-trailer, which can move quickly and be quickly connected to the power grid, with on-site wire connection, and less debugging work. The concept of "intelligent" in the substation is based on the intelligence of the secondary solution. Reflected by the transformation, the mobile substation automation system is implemented as a three-tier equipment and a two-level network structure to realize informatization, automation, and interaction of the substation.
Features
Existing substations are generally fixed substations, and the demand for flexible and fast power supply by the power supply and power departments has rapidly increased. Traditional fixed substations have been unable to meet the needs of the development of modern power systems. In order to cope with the restoration of the power supply of the substation in the event of a short-circuit such as a substation that cannot be restored, it is convenient to transfer the load during the transformation project, reduce the investment in construction transition costs, and reduce the impact on industrial and agricultural production and life. Effective load transfer technology is urgently needed. At the same time, with the development of the economy, the annual load in some regions is unbalanced and the growth of the difference is too fast. For example, the current overload rate of existing substation equipment is generally high when the “peak summer”. In response to major events such as "guaranteeing power for the Olympic Games", "guaranteeing power for the World Expo" and "guaranteeing power for the whole operation," higher requirements have been placed on power supply continuity and reliability. Intelligent mobile substations can bring great economic benefits to power supply departments and owners, which are reflected in:
■ In case of sudden emergency or equipment replacement, it can immediately replace the fixed substation to restore power supply, reduce sudden accident losses, and reduce power failure time;
■ In the short term, when the power supply capacity of an area or a project increases, the capacity of the substation can be temporarily increased to improve the reliability of the system power supply;
■ During equipment maintenance, it can reduce losses caused by planned power outages;
■ It can replace the backup transformer of a certain area substation, reduce the investment cost of new substations, and reduce substation management costs.
ELECTRIC
