Characteristics of Hospital Power Distribution System and Scheme for Improving Power Quality

In fact, hospitals are places with extremely high requirements for power quality. Unexpected power outages and grid disturbances have a significant impact on medical equipment, and this cannot be ignored. Especially for some imported equipment, the requirements for the power grid environment are very high. Because countries abroad have long attached great importance to power quality issues and imposed strict restrictions, many instruments cannot ensure normal detection in a harmonic environment, and even their service life may be affected.

Characteristics of the low-voltage power distribution system in hospitals
The power distribution system of hospitals usually consists of a 10/0.4kV main transformer. The main loads include electronic medical equipment, lighting and variable-frequency ventilation equipment, computers and UPS, etc. Most of these are single-phase non-linear loads, such as ventilation equipment, lighting equipment, electronic medical equipment, computers and UPS, etc. The harmonics on the low-voltage power distribution network are severe. Therefore, when implementing reactive power compensation for the hospital's low-voltage power distribution system, it is necessary to attach great importance to the treatment of harmonic pollution.

Hospital low-voltage power distribution system reactive power compensation and harmonic control solution

Given the characteristics of the low-voltage power distribution system in hospitals, a mixed filtering scheme using active filters and dynamic reactive power compensation devices can be adopted. This scheme not only safely compensates for reactive power but also uses active filters to manage harmonics. It is an appropriate solution for harmonic control and reactive power compensation in hospital power distribution systems.