CN203643560U - A New Cable Partial Discharge Monitoring Device - Google Patents

Abstract

The utility model relates to the technical field of cable partial discharge monitoring, and in particular relates to a novel cable partial discharge monitoring device. According to the utility model, online real-time monitoring is carried out on the partial discharge of a single-phase or three-phase high voltage cable; the partial discharge data of each phase of A, B and C phase cable can be respectively acquired; various kinds of on-site interference signals can be effectively inhibited; automatic measuring frequency selection according to on-site interference characteristics can be realized; discharge signal peak acquisition is accurately realized through an on-site monitoring unit; the monitoring device can realize a wireless communication networking function through a GPRS data transmission antenna; the monitoring data of a discharge quantity value, an alarm event and the like are regularly uploaded to a remote data center server, so that statistics and analyzing can be timely carried out on the acquired on-site monitoring data.

Description

A New Cable Partial Discharge Monitoring Device

technical field

The utility model relates to the technical field of cable partial discharge monitoring, in particular to a novel cable partial discharge monitoring device.

Background technique

The full name of partial discharge is partial discharge, which can be understood as a small defect in the cable aging process. If it is not repaired in time, it will cause cable transmission failure. Partial discharge will produce a series of changes in light, sound, electricity, etc. inside and around the power equipment, which provide a reference for monitoring the insulation state inside the power equipment. The existing monitoring devices need to be monitored on site to obtain the monitoring data, and then Only when you go back can you analyze the results, which is very inconvenient to operate, and the monitoring work efficiency is not high.

Therefore, in order to overcome the deficiencies of the above-mentioned technologies, a new type of cable partial discharge monitoring device is designed that can monitor in real time online, regularly upload the monitoring data such as discharge value and alarm events to the remote data center server, and improve the monitoring work efficiency. It is exactly the problem that the inventor wants to solve.

Contents of the invention

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide a new type of cable partial discharge monitoring device, which is simple in structure, easy to use, and can be monitored in real time online, and the monitoring data such as discharge value and alarm events are regularly uploaded to remote The data center server improves the working efficiency of monitoring and has very good practical value.

The technical solution adopted by the utility model to solve the technical problem is: a new cable partial discharge monitoring device, which is characterized in that: the device includes a broadband current transformer, a power transformer, a field monitoring unit, a field power supply battery, and a GPRS data The transmission antenna, the wire connector, and the wire connector are respectively connected to the broadband current transformer and the power transformer, the broadband current transformer is connected to the on-site monitoring unit, the power transformer is connected to the on-site monitoring unit, and the on-site monitoring unit is connected to the GPRS data The transmission antenna is connected, and the on-site power supply battery is connected to the on-site monitoring unit.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

The utility model realizes on-line real-time monitoring of partial discharge of single-phase or three-phase high-voltage cables. Through the utility model, the partial discharge data of each phase of A/B/C three-phase cables can be obtained separately, and various interference signals on site can be effectively suppressed. , the measurement frequency band is automatically selected according to the on-site interference characteristics, and the peak value of the discharge signal can be accurately collected through the on-site monitoring unit. Regularly uploaded to the remote data center server, the statistics and analysis of the acquired on-site monitoring data can be performed in a timely manner.

Description of drawings

Fig. 1 is a schematic diagram of the structural frame of the utility model.

Fig. 2 is a schematic diagram of the working principle of the utility model.

Description of drawings: 1-wire connector; 2-power transformer; 3-broadband current transformer; 4-site power supply battery; 5-site monitoring unit; 6-GPRS data transmission antenna.

Detailed ways

The utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Figure 1 is a structural schematic diagram of a new type of cable partial discharge monitoring device of the present utility model. The device includes a broadband current transformer 3, a power transformer 2, an on-site monitoring unit 5, an on-site power supply battery 4, a GPRS data transmission antenna 6, and a wire connector 1 , the wire connector 1 is connected with the broadband current transformer 3 and the power transformer 2 respectively, the broadband current transformer 3 is connected with the on-site monitoring unit 5, the power transformer 2 is connected with the on-site monitoring unit 5, and the on-site monitoring unit 5 It is connected with the GPRS data transmission antenna 6, and the on-site power supply battery 4 is connected with the on-site monitoring unit 5.

Figure 2 is a schematic diagram of the working principle of the utility model. The utility model is based on the partial discharge electric pulse broadband radiation mechanism, and uses the electric pulse monitoring method to monitor the partial discharge of high-voltage cables online and complete data display and upload. When the monitored point cable When the partial discharge signal exceeds the predetermined value, an alarm signal is automatically issued. The utility model can realize on-line real-time monitoring of partial discharge of single-phase or three-phase high-voltage cables. Through the utility model, the partial discharge data of each phase of A/B/C three-phase cables can be obtained separately, and the discharge can be accurately realized through the on-site monitoring unit 5 Signal peak value collection, and the monitoring device can also realize the wireless communication networking function through the GPRS data transmission antenna 6, and regularly upload the monitoring data such as discharge value and alarm events to the remote data center server, and can timely monitor the acquired on-site monitoring data. Statistics and Analysis. The utility model has strong anti-interference ability and accurate monitoring data, realizes partial discharge on-line monitoring in a strong interference environment, and displays the partial discharge value of the cable at the monitored point in real time, which is convenient for observing the current trend of cable partial discharge intensity and evaluating the reliability of cable operation , through the use of GPRS data transmission antenna 6, it has reliable wireless communication capabilities, and can transmit data to a designated server in real time, realize data transmission in different places, control equipment in different places, carry out remote online monitoring, analysis and diagnosis of operating status, and realize online understanding The running status of high voltage cables.

Claims (1)

1. A novel cable partial discharge monitoring device, characterized in that: the device comprises a broadband current transformer, a power transformer, an on-site monitoring unit, an on-site power supply battery, a GPRS data transmission antenna, an electric wire joint, and the electric wire joint is respectively connected to the broadband Current transformer connection, power transformer connection, broadband current transformer and on-site monitoring unit connection, power transformer and on-site monitoring unit connection, on-site monitoring unit and GPRS data transmission antenna connection, on-site power supply battery and on-site monitoring unit connection .

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