Simulation data accessing method based on power grid CIM (Common Information Model) interface

Abstract

The invention provides a power grid CIM (Common Information Model)-based method for accessing real-time data state estimated result of an EMS (Energy Management System) into an interface of a full-digital real-time simulation system. The method comprises the steps of: outputting a power grid model of the EMS and a telemetry information-equipment relation table into a format data file according to a CIM derivation standard, reading the CIM file in by a full-digital real-time simulation system of a power system through a data interface to form a computation database, and directly transmitting the power system simulation data based on the database back to the EMS for detection. The power grid CIM-based method has the advantages of multi-system joint debugging, high data precision and fast transmission speed, provides reliable data basis and unified network model for online safety analysis and prewarning control of a large power grid for the first time, and breaks through the bottleneck that calculation results cannot be compared because the offline calculation and a calculation module are inconsistent; and tests prove that a measurement model which is used for the full-digital real-time simulation system of the power system and constructed on the basis of the CIM derivation standard of the EMS is correct and consistent.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to a simulation data access method based on a CIM grid model interface. Background technique [0002] The safe and stable economic operation and early warning control of large power grids are major issues in the field of power system computing. my country has formed the world's highest voltage level and largest interconnected power grid. In order to carry out analysis and research on power system security and stability, it is necessary to simulate large interconnected power grids Various faults and transient processes. In the past, a digital-analog hybrid real-time simulation system was used for simulation, but due to investment and site constraints, it was impossible to simulate a super-large-scale power system. However, the power system all-digital real-time simulation system derived the public information model CIM of the power grid through the measurement and state estimation results o...

AI Technical Summary

Problems solved by technology

The EMS system focuses on the analysis and calculation of real-time power grid model parameters and real-time telemetry data collected by secondary equipment during on-site real-time operation. Due to the inconsistency with the model of the all-digital real-time simulation system during the simulation operation in the laboratory, especially the power grid boundary The processing of the model and the modeling of the DC system are inconsistent in the two systems, which makes the EMS system spend a lot of manpower when using the simulated data provided by it for calculation, and the calculation accuracy is not high

[0004] In the past, the database used by the all-digital real-time simulation system of the power system was inconsistent with the database of the EMS system in terms of data structure, data content, and equipment naming. It is necessary to develop a special interface program for database mapping, and manually write a mapping table for devices with irregular names, which increases the maintenance workload of the interface program

Moreover, in use, it is often found that the established network models are inconsistent due to inconsistencies in the databases of the two systems, which not only leads to incomplete data mapping, but also the power grid data simulated by the full digital real-time simulation system does not meet the grid power flow constraints of the EMS system database. , EMS system using such data for analysis will greatly affect the calculation accuracy

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