CN111328039A - Intelligent partial discharge sensor based on GIS (geographic information System) primary fusion - Google Patents

Abstract

The invention discloses an intelligent partial discharge sensor based on GIS one-time fusion. Acquire the PD signal and convert the signal to digital. In the intelligent PD sensor of the present invention, the power source is obtained from the GIS operating mechanism or the LCU cabinet, and data is sent wirelessly, which is convenient to use, suitable for large-scale promotion, and effectively avoids the low PD detection rate caused by the wireless transmission of battery power and the traditional PD detection rate. The disadvantages of online implementation are heavy. The use of this device can reduce labor costs, increase work efficiency, and improve equipment operation reliability. It provides technical support for the construction of comprehensive intelligent monitoring of substations, and will produce great economic and social benefits.

Description

Intelligent PD sensor based on GIS one-time fusion

technical field

The invention relates to the technical field of partial discharge detection of GIS high-voltage equipment in a substation, in particular to an intelligent partial discharge sensor based on GIS one-time fusion.

Background technique

In recent years, my country's electrical primary equipment manufacturing has made great progress, and the proportion of GIS substation equipment is increasing. Gas-insulated metal-enclosed switchgear (GIS) uses sulfur hexafluoride gas as an insulating and arc extinguishing medium, and integrates circuit breakers, isolating switches, earthing switches, insulating plates, current and voltage transformers, arresters, busbars, cable terminals and other modules , Combination switchgear combined in a building block structure and all enclosed in a metal shell. Compared with traditional air-insulated switchgear, it has the characteristics of small footprint, good safety performance, high reliability, and long maintenance cycle. Therefore, with the rapid development of my country's power industry construction, GIS is widely used.

The safe operation of GIS is very important to the stability of the power system. To ensure the safe operation of GIS, it is necessary to pay attention to and strengthen its detection. Due to the high field strength in the GIS, when there are some defects in the equipment, partial discharge will occur during operation, and ultra-high frequency electromagnetic waves and acoustic signals will be excited. The occurrence of GIS insulation failure is mainly caused by the defect in the GIS gas chamber during the process of product production, on-site installation and operation. At the same time, when the gas-insulated combined electrical equipment is used, the internal partial discharge is regularly detected, which plays an important role in ensuring its safe use. The internal partial discharge of the gas-insulated combined electrical equipment is an important indicator.

At present, the partial discharge online monitoring technology of gas-insulated combined electrical equipment is gradually being applied. According to the needs of different electrical equipment and different users, the sensors in the existing GIS partial discharge online monitoring device are divided into wired transmission and wireless transmission. In the process, a lot of workload is increased, and wireless transmission saves the work of laying lines; however, wireless transmission needs to install batteries to supply smart sensors, so the battery needs to be replaced regularly after the system goes online, which increases the workload and does not support continuous acquisition. During normal operation, the acquisition interval is generally 12 hours or 24 hours, and a fixed frequency of 50Hz is generally used. Sometimes the map drawing is not accurate enough to meet the needs of users.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the defects existing in the prior art, and propose an intelligent partial discharge sensor based on GIS one-time fusion.

In order to achieve the above object, the present invention adopts the following technical solutions:

An intelligent PD sensor based on GIS one-time fusion, including data acquisition module, data processing module, storage module, data wireless transmission module, power supply module, GIS operating mechanism or LCU cabinet;

The data acquisition module is used for acquiring the partial discharge signal and converting the signal into a digital signal;

The data processing module is connected with the data acquisition module, and is used for analyzing and processing the pulse information in the digital signal obtained by the data acquisition module, and using the pulse information to generate partial discharge phase PRPD spectrogram data;

The storage module is connected with the data processing module for saving the processed data;

The data wireless transmission module is connected with the receiving end to provide data results;

The power supply module obtains power from the GIS operating mechanism or the LCU cabinet, and at the same time obtains the power grid frequency synchronization signal to ensure the reliable operation of the entire system.

Further, the data wireless transmission module transmits data information through a BLE low-power bluetooth method.

Further, the storage module is connected to the data processing module for saving the processed data. When the communication between the intelligent sensor and the station-side monitoring module fails, the monitoring data will not be interrupted or lost, and will be automatically restored after the communication is restored. Supplement.

Compared with the prior art, the beneficial effects of the present invention are:

In the intelligent PD sensor of the present invention, the power source is obtained from the GIS operating mechanism or the LCU cabinet, and the data is sent wirelessly, which is convenient to use, suitable for large-scale promotion, and effectively avoids the low PD detection rate caused by the wireless transmission of battery power and the traditional PD detection rate. The disadvantages of online implementation are heavy. The use of this device can reduce labor costs, increase work efficiency, and improve equipment operation reliability. It provides technical support for the construction of comprehensive intelligent monitoring of substations, and will produce great economic and social benefits.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

Fig. 1 is the power supply and data processing process diagram of the intelligent partial discharge sensor based on GIS one-time fusion proposed by the present invention;

Fig. 2 is the deployment connection of the intelligent PD sensor based on GIS one-time fusion proposed by the present invention;

FIG. 3 is an actual deployment diagram of the intelligent PD sensor based on GIS one-time fusion proposed by the present invention.

In the figure: 1 data acquisition module, 2 data processing module, 3 storage module, 4 data wireless transmission module, 5 receiver, 6 power supply module, 7GIS operating mechanism or LCU cabinet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Referring to Figure 1-3, an intelligent PD sensor based on GIS one-time fusion includes a data acquisition module 1, a data processing module 2, a storage module 3, a data wireless transmission module 4, a power supply module 6, a GIS operating mechanism or an LCU cabinet 7 ;

The data acquisition module 1 is used to acquire the partial discharge signal and convert the signal into a digital signal; it supports continuous acquisition, and the acquisition interval can be set to be very short during normal operation.

The data processing module 2 is connected with the data acquisition module 1, and is used for analyzing and processing the pulse information in the digital signal obtained by the data acquisition module 1, and using the pulse information to generate partial discharge phase PRPD spectrogram data;

The storage module 3 is connected with the data processing module 2 for saving the processed data;

The data wireless transmission module 4 is connected with the receiving end 5 to provide data results;

The power supply module 6 obtains power from the GIS operating mechanism or the LCU cabinet 7, and at the same time obtains the power grid frequency synchronization signal to ensure the reliable operation of the entire system.

The power supply module 6 obtains power from the GIS operating mechanism or the LCU cabinet 7, and simultaneously obtains the power grid frequency synchronization signal, taking into account the rapid deployment and real-time detection, ensuring the reliable operation of the entire system, maintenance-free after the system goes online, and no need to replace the battery regularly.

The power supply module 6 has an interface to facilitate obtaining power from the GIS operating mechanism or the LCU cabinet 7 .

Further, the data wireless transmission module 4 transmits data information through the BLE low-power bluetooth method.

Further, the storage module 3 is connected with the data processing module 2 to save the processed data. When the communication between the intelligent sensor and the station-side monitoring module fails, the monitoring data will not be interrupted or lost, and will be automatically restored after the communication is restored. Supplement.

In the intelligent PD sensor of the present invention, the power source is obtained from the GIS operating mechanism or the LCU cabinet, and the data is sent wirelessly, which is convenient to use, suitable for large-scale promotion, and effectively avoids the low PD detection rate caused by the wireless transmission of battery power and the traditional PD detection rate. The disadvantages of online implementation are heavy. The use of this device can reduce labor costs, increase work efficiency, and improve equipment operation reliability. It provides technical support for the construction of comprehensive intelligent monitoring of substations, and will produce great economic and social benefits.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (3)

1. The intelligent partial discharge sensor based on GIS primary fusion comprises a data acquisition module (1), and is characterized by further comprising a data processing module (2), a storage module (3), a data wireless transmission module (4), a power supply module (6), a GIS operating mechanism or an LCU cabinet (7);

the data acquisition module (1) is used for acquiring partial discharge signals and converting the signals into digital signals;

the data processing module (2) is connected with the data acquisition module (1) and is used for analyzing and processing pulse information in the digital signals obtained by the data acquisition module (1) and generating partial discharge phase PRPD spectrogram data by using the pulse information;

the storage module (3) is connected with the data processing module (2) and is used for storing the processed data;

the data wireless transmission module (4) is connected with the receiving end (5) to provide a data result;

and the power supply module (6) acquires a power supply from a GIS operating mechanism or an LCU cabinet (7), and simultaneously acquires a power grid frequency synchronization signal, so that the reliable operation of the whole system is ensured.

2. The GIS primary fusion-based intelligent partial discharge sensor according to claim 1, wherein the data wireless transmission module (4) transmits data information in a BLE Bluetooth low energy mode.

3. The GIS once-fusion-based intelligent partial discharge sensor according to claim 1, wherein the storage module (3) is connected with the data processing module (2) and is used for storing the processed data, and when the intelligent sensor fails to communicate with the station-side monitoring module, the monitored data cannot be interrupted or lost, and will be automatically retransmitted after the communication is restored.

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