A novel power equipment access grid reliability assessment and optimization method and system

Abstract

The invention relates to a novel power equipment access power grid reliability assessment and optimization method and system. The method comprises the following steps: calculating the reliability of novel power equipment after access to a power grid according to a pre-established novel power equipment reliability model and the access position of the novel power equipment; comparing the reliabilitylevel change before and after the novel power equipment is connected to the power grid, and determining a power grid system reliability optimization target and a novel power equipment reliability optimization target; determining a weak module in the novel power equipment by performing sensitivity analysis on the reliability of the novel power equipment; the sensitivity of weak module constituentparts is analyzed through a perturbation method, and economic analysis is combined, so that the economic costs of different sub-modules are compared when the same reliability level is improved, and the constituent parts and the improvement amount which should be improved for improving the reliability of the sub-modules are determined; and the improved novel power equipment is connected to a powergrid, system reliability evaluation is carried out again, and the equipment optimization and improvement effect is judged. The reliability level can be improved.

Description

technical field [0001] The invention relates to the field of power system reliability assessment and grid planning, in particular to a reliability assessment and optimization method and system for a new type of power equipment connected to a grid. Background technique [0002] Due to the imbalance of energy distribution and economic development, it is often necessary to transmit electric energy to the load center over long distances. DC transmission has obvious advantages in large-capacity and long-distance transmission. It has played an important role in my country's strategy of "transmitting power from west to east and connecting the whole country". AC-DC networking has become an important development trend of the future power grid. At the same time, with the continuous growth of power demand, the load on power transmission lines is increasing. In addition, the distribution of power sources and load centers is not balanced, which requires long-distance and UHV power transm...

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Problems solved by technology

[0004] However, compared with traditional equipment, the structure of these new power equipment is relatively complex, and its functions are more abundant

However, with the complexity of equipment structure and the increase of working conditions and environmental constraints, the reliability of equipment needs special attention

At the same time, in order to meet the requirements of the reliability index, there are corresponding requirements for the reliability index of the components or the redundancy of the equipment, and these requirements are accompanied by the increase of the cost.

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