The trips of industrial bproduction process for sensitive users are caused by voltage sag, which leads to huge economic loss, so it’s urgent to install governance equipment to meet the demand for premium power. Aiming at the problems of high investment and high risk in the traditional users’ self-purchase governance equipment, a service pattern for premium power supply based on trust lease is proposed. The specific content and implementation process of the pattern are proposed to solve the three problems of sensitive loads screening, service cost optimization and service cost allocation. By defining the "capacity/loss ratio" to screen out the sensitive loads which are necessary to install the governance equipment. The service cost is optimized with the goal of maximizing the net income of the user and the service provider. The asymmetric Nash negotiation model of the service cost allocation between the power company and the equipment manufacturer is established, and the strategy of service cost allocation is proposed. So far, a complete and operable service pattern has been formed. Finally, an empirical analysis of a sensitive user proves the feasibility of trust lease pattern and provides a new pattern reference for the development of premium power supply service. This work is supported by the Science and Technology Project of China Southern Power Grid (No. 090000KK 52190169/SZKJXM2019669).