Method and system for automatic real-time evaluation of dispatcher's power flow calculation accuracy

Abstract

The invention discloses a method and a system for automatically evaluating the dispatcher load flow calculation precision in real time. The method comprises the following steps that a load flow cross section is automatically obtained according to the preset time interval; the monitoring warning information of an SCADA (supervisory control and data acquisition) system is received, and when the monitoring warning information comprises the closed operation of the switch, the nearest load flow cross section before the closing of the switch is extracted to be used as the cross section before the loop closing; after the preset time from the switch closing, the load flow cross section is actively obtained to be used as the cross section after the loop closing; the PAS calculation is carried out according to the cross section before the loop closing to obtain the simulation loop cross section, and the comparison results between the cross section after the loop closing and the simulation loop cross section are stored. When the method and the system provided by the invention are adopted, the potential risk in the electric network can be discovered in time through the evaluation and the monitoring on the dispatcher load flow calculation.

Description

technical field [0001] The invention relates to dispatcher power flow technology, in particular to a method and system for automatically evaluating dispatcher power flow calculation accuracy in real time. Background technique [0002] With the development of the power industry, the capacity of the power grid continues to expand. The rapid formation of large interconnected power grids; the emergence of large units, large interconnected power grids, and ultra-high-voltage long-distance transmission lines have stricter requirements for the safety, stability, and economic operation of the power grid, so that automatic data collection, monitoring and control of power system operations can be carried out in real time The advanced scheduling automation system (SCADA) came into being. Related auxiliary advanced application software is also upgraded accordingly. Among them, the dispatcher trend is the most used one in the advanced application software of the dispatcher, and it is a...

AI Technical Summary

Problems solved by technology

However, in the existing technology, the accuracy of the dispatcher's power flow calculation is low

In particular, as the interconnected large power grid becomes more and more complex, the calculation results of the current dispatcher's power flow module and the actual results of the loop closure are very different, and it is not uncommon for the difference to be several times

In addition, due to the lack of principle analysis and long-term statistical tracking of this dispatcher power flow module, it is impossible to find or gradually find the shortcomings of this type of software, lack of evaluation and early warning of this type of software, and the risk of failure of the power grid also exists Hidden danger

Images