Online evaluation method and system for provincial power grid adequacy

Abstract

The invention discloses an online evaluation method and system for provincial power grid adequacy, and relates to the analysis of power grid adequacy. At present, provincial dispatching operation personnel lack the power supply readability of loads in a provincial power grid subregion and the monitoring and the analysis of a transfer capability. The method comprises the following steps that: obtaining the real-time operation model data of a power grid; carrying out fracture surface load flow regulation and dynamic partitioning; carrying out system adequacy analysis and evaluation; carrying outsubregion adequacy analysis and evaluation; and making an adequacy insufficiency auxiliary decision: when system adequacy and/ or subregion adequacy is insufficient, carrying out the auxiliary decision analysis, and outputting a corresponding auxiliary decision measure and adequacy monitoring data. By use of the technical scheme, the system adequacy and the subregion adequacy are subjected to online analysis, a power grid adequacy state is monitored and given an alarm, the auxiliary decision when the adequacy is insufficient is provided, the ability of the dispatching operation personnel forperceiving, coping with and actively mastering the power grid adequacy is improved, a provincial power grid adequacy level is further improved, and the power grid is guaranteed to safely and stably operate.

Description

technical field [0001] The invention relates to the analysis of the adequacy of the power grid, in particular to an online evaluation method and system for the adequacy of the provincial power grid. Background technique [0002] The fundamental task of the power system is to provide users with continuous, stable, and high-quality electric energy, and its outstanding feature is that the production, transmission, and consumption of electric energy are carried out simultaneously, and it is difficult to store, and the load demand fluctuates randomly within a certain range. A certain probability may force outage, so it is necessary to ensure that the power system has sufficient reserve capacity to meet unplanned user needs. Insufficient system backup will cause the needs of some users to be unsatisfied, and even endanger the safe and stable operation of the system in an emergency; but excessive backup will cause great economic losses. How to balance the reliability and economy of...

AI Technical Summary

Problems solved by technology

Provincial commissioning operators lack the monitoring and analysis of power supply reliability and transfer capacity of loads in provincial power grid subregions. At the same time, specific information related to system adequacy needs to be calculated and analyzed separately in multiple independent application analysis modules. The resulting data is inconsistent. Synchronous and incomplete; affecting the safe and stable operation of the power grid

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