介绍了由UPS组成的新型操作电源的选型操作电源的选型原则、应用方法,提出了实际应用中应注意的问题。为中小型变配电所使用小型电源提供了依据。 Introduced the selection principle and application method of the selection operation power of the new operation power by UPS, and put forward the problems that should be noticed in practical application. For small and medium power distribution used by small power provided the basis.