Modeling method for substation-dispatching center two-level distributed type power grid

Abstract

A method of substation-control center two-level distributed modeling for power grid is provided. The method comprises: (1) building a substation model for each of substations, each substation model comprising a network model having a topological structure of the substation devices, parameters of the substation devices and measurement information of each substation devices, and a wiring diagram of each substation based on a whole line identification consistency; (2) uploading each substation model for each of the substations to the control center through a state power dispatching data network; and (3) splicing network models for the substations according to the wiring diagrams of the substations to build a whole power grid model of a whole power grid so as to monitor and control the whole power grid.

Description

technical field [0001] The invention belongs to the field of power system operation and control, in particular to a modeling method for a two-stage distributed power grid of a substation-dispatch center. Background technique [0002] In the energy management system (Energy management system, EMS) architecture, it is a computer-based dispatching automation system for modern power systems. Its task is to collect, monitor, analyze, optimize and control the power system in real time. Power grid model and wiring diagram are the foundation and core link of EMS, and the basis of monitoring, analysis, optimization and control. The power grid model includes the topological structure of equipment, equipment parameters, and measurement information. The topological structure and equipment parameters of the equipment include the topology and parameters of equipment such as transformers, lines, generators, loads, switches, isolation switches, and grounding switches. The measurement info...

AI Technical Summary

Problems solved by technology

[0004] The main problems of this centralized method are as follows: (1) The establishment of the grid model of the whole network (including equipment parameters, static topology, and primary wiring diagram) must be completed in the dispatching center, and the workload increases with the increasing scale of the grid. A significant increase

(2) It is impossible for the maintenance personnel in the dispatch center to be very familiar with every detail of the power grid, and the potential for errors is very high. Such parameter errors or topology errors will be lost in the huge power grid model information, making it difficult to locate

(3) Under the current centralized modeling method, if the dispatch center is hit by a disaster, it will easily lead to the paralysis of all functions, and it is difficult to heal itself

This method has the following deficiencies: (1) The splicing is the model under the jurisdiction of different dispatch centers, and the boundary is the boundary equipment between the jurisdiction areas of each dispatch center; it does not consider the more basic splicing model of the substation into the dispatch center model

(2) This method still needs to be modeled in the dispatch center

(3) There is a problem with the dispatch center model, and this method cannot realize the self-healing of the model

(4) This method does not consider the splicing of graphics and real-time data

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