Power substation secondary system failure reconnaissance method

Abstract

The invention discloses a power substation secondary system failure reconnaissance method. The power substation secondary system failure reconnaissance method comprises following modules: an information inputting and comparing module, an information real-time transmission module, an engineer data module and a failure simple treatment scheme module, wherein the information inputting and comparing module is used for inputting all kinds of site data to a database of an engineer on site, the site data comprise pictures and variable data of corresponding parameters, the data are compared in a common fault database of a power substation secondary system which is originally built, and the fact that whether failure occurs in the secondary system and the type of the failure are compared. The information real-time transmission module is used for carrying out a real time transmission function, and has the image, character and voice transmission functions. The engineer data module is used for building a database of secondary system maintenance engineers and recording the maintenance aspects at which a corresponding engineer is good, and enabling coordination staff to find an appropriate engineer rapidly and conveniently. The failure simple treatment scheme module is used for establishing the treatment scheme of a common failure, namely, the simple treatment scheme of the common failure is summarized in the simple treatment scheme module, and accessories are provided; a flow chart and simple measures of treatment of the failure are inquired through the method of inputting the name of the failure.

Description

technical field [0001] The invention relates to a fault investigation method for a secondary system of a substation, which belongs to the technical field of electric power. Background technique [0002] With the rapid development of the power grid and the popularization of unattended substations, the in-depth reform of the three sets of five systems, the unattended substations under the jurisdiction of the provincial inspection and maintenance personnel on duty are all 220kV substations, with large regional spans and complex network structures. As the secondary protection comprehensive automatic equipment is becoming more and more complex, the reasons for the fault signal are also increasing. Although the dispatch center can obtain real-time information on the operation of the substation through the comprehensive automatic system, it can only obtain the fault signal of the equipment, which cannot reflect the substation. Detailed information on the cause of the fault in the p...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the power grid and the popularization of unattended substations, the in-depth reform of the three sets of five major systems, the unattended substations under the jurisdiction of the provincial inspection and substation operation and maintenance personnel are all 220kV substations, with large regional spans and complex network structures

As the secondary protection comprehensive automatic equipment is becoming more and more complex, the reasons for the fault signal are also increasing. Although the dispatch center can obtain real-time information on the operation of the substation through the comprehensive automatic system, it can only obtain the fault signal of the equipment, which cannot reflect the substation. Detailed information on the cause of the fault in the power station, so when the fault signal is found, it is still necessary for the operator to go to the scene for fault investigation as soon as possible

Although the operating personnel can arrive at the scene in time, due to the complex structure of the secondary system equipment, they often can only "look at the ocean and sigh" for the result

When the secondary maintenance personnel receive the on-site emergency repair task from their superiors at the station, because they do not know the on-site failure situation, they always have to conduct comprehensive analysis with the help of various data and procedures. This kind of analysis is not only unreliable but also lacks in safety. Sufficient support, and often requires a long reaction preparation time before departure

This not only increases investment, but also increases the burden on CT and PT, resulting in different results when measuring the same analog quantity

Although some substations only install one set of transmitters, they adopt a multi-circuit voltage output scheme for separate management of each department, which cannot guarantee consistent output accuracy, resulting in measurement errors

[0014] (2) Duplicate functions of telecontrol device and local computer monitoring device

[0015] The analog quantity, switching quantity and pulse quantity collected by the remote control device are also needed by the local microcomputer monitoring device. At present, information sharing has not been achieved, so that a set of devices can realize two functions and transmit and receive the required information separately according to the needs. Instead, set the equipment or a set of equipment separately.

[0016] (3) Sequence of events recording function duplication

In the past, it was difficult to meet the requirements of the substation by secondary personnel to investigate the failure mode on site