Calculating method containing equipment utilization rate of distributed power supply distribution network

Abstract

The invention discloses an assessment method containing an equipment utilization rate of a distributed power supply distribution network. The method comprises the steps of: setting a time parameter T, and obtaining related parameters of power distribution network equipment in the set time parameter; superposing load curves of all users in a power supply region of the power distribution network equipment, and obtaining a total social load curve of the power distribution network equipment; and calculating a load rate and a capacity factor of the power distribution network equipment, wherein according to contribution conditions of distributed power supplies, three statistics calibers, namely down power, reverse power and a total social load, are adopted for calculating the load rate of the power distribution network equipment, and according to the power generation conditions of the distributed power supplies, three statistics calibers, namely a down electric quantity, a reverse electric quantity and a total social electric quantity, are adopted for calculating the capacity factor of the power distribution network equipment. The assessment method provided by the invention solves the problems that under an existing assessment system, the distributed power supplies influence the assessment of the utilization rate of the power distribution network equipment, and consequently, the management level of a power supply enterprise cannot be evaluated fairly.

Description

technical field [0001] The invention relates to a method for calculating the utilization ratio of distributed power distribution network equipment. Background technique [0002] Due to the increase in global greenhouse gas emissions and the increasingly tight energy supply, the demand for new energy grid-connected capacity has increased, and a large number of distributed power sources have been connected to the distribution network. In a distribution network containing distributed power sources, due to the characteristics of local consumption of distributed power sources, it will inevitably affect the net load characteristics of distribution network equipment. Under the existing evaluation method, it will affect the distribution network equipment utilization rate. [0003] The equipment utilization rate is a dimension used to reflect the equipment utilization level, and is an important indicator of the economic construction of the power grid; therefore, when evaluating the ...

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Problems solved by technology

At present, the load rate is calculated by sending power or reverse power, and the utilization rate of distribution network equipment is evaluated by load rate and actual transmission power; when distributed power is connected to the distribution network, it will affect the load rate of distribution network equipment and the actual transmission power, thus affecting the utilization of distribution network equipment

Distributed power is an unadjustable factor, that is, power companies need to adjust the distribution network, such as increasing the selection capacity of distribution network equipment to adapt to the access of distributed power; and when distributed power generation, distribution network equipment The backup function of distributed power supply cannot be reflected in the existing evaluation method; therefore, the utilization rate of distribution network equipment calculated under the existing evaluation method is unfair and unscientific as a measurement index for evaluating the management level of power supply enterprises of

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