A substation AC power monitoring system and method

Abstract

The invention provides a transformer substation alternating current power supply monitoring system and a transformer substation alternating current power supply monitoring method. The system comprises an intelligent equipment information collection terminal, a human-computer interface configuration module, an intelligent electronic device (IED) model automatic configuration module, a version automatic matching module, an adaptable communication module and a background monitoring center; and the intelligent equipment information collection terminal, the HMI configuration module, the IED model automatic configuration module, the version automatic matching module and the adaptive communication module are connected with the background monitoring center. The transformer substation direct current power supply monitoring system has the advantages that a user can arrange transformer substation configuration information according to specific needs, and quickly display a corresponding transformer substation subsystem interface; according to different configuration, an IED performance description file and a map file can be quickly generated, so that the manual workload is greatly reduced, the error probability is reduced, and the labor cost is also reduced; hardware problems can be detected in advance, and appropriate strategies can be found; and the matching states of a software version of an upper computer and software version of a lower computer can be timely grasped.

Description

technical field [0001] The invention relates to the field of AC power monitoring, in particular to a substation AC power monitoring system and method. Background technique [0002] At present, power grid dispatching automation is very mature and perfect, and more and more substations are unattended. However, after the evacuation of personnel, the safe operation of the substation has become extremely important, and the demand for safety monitoring has become stronger and stronger. Although the power grid dispatching automation system covers the information of some AC power systems, the operating status of most AC equipment cannot be fully grasped. [0003] In the substation, the AC power supply provides 380 / 220V power for transformer air-cooled circuit, lighting, ventilation, air conditioning, water pump and other loads, which is one of the important components to ensure the normal operation of the substation. At present, substations are developing in the direction of digit...

AI Technical Summary

Problems solved by technology

[0005] 1. The human-machine interface of the existing AC power monitoring device and the configuration, layout, and wiring of the substation are a strong coupling mode. Each substation needs to develop a separate set of human-machine interface, which cannot flexibly display each substation according to the requirements of the substation. The man-machine interface information, software portability is poor, not conducive to centralized control and digital communication, can not effectively realize man-machine dialogue, can not change the operating parameters arbitrarily during operation

[0006] 2. At present, the AC power supply equipment of the substation is modeled using the 61850 model file implemented by the IEC 61850-7-420 standard. The IEC 61850-7-420 standard does not list the relevant extension classes for the logical nodes of the AC power supply equipment of the substation

Since the introduction of the DL / T 860 standard, the original modeling method cannot meet the requirements of the existing standard and does not meet the bidding specifications of the State Grid

The original model file has poor interoperability because different manufacturers create different logical nodes LN (logical node, hereinafter referred to as LN).

[0007] The 61850 model file has been completed by manual editing. Manual editing of the IED Capability Description (ICD) file requires high technical requirements for engineers, and the workload is heavy and error-prone

[0008] 3. Due to the technical disconnection and incoordination of the AC power supply devices of different manufacturers, with the addition of system software requirements and the increase of measurement points, the software version of the AC power supply system may not match the software version of other power supply systems. The equipment cannot operate normally, especially for smart substations and unattended power stations, which will have a greater impact

[0009] 4. The current communication mechanism of AC power equipment is to manually configure the port information manually, and then save the parameters and restart to take effect

This configuration modification-save-restart mechanism has high technical requirements for operators, and poor flexibility and compatibility

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