CN204287178U - A kind of transformer oil quality on-line monitoring device - Google Patents

Abstract

The utility model discloses a kind of transformer oil quality on-line monitoring device, comprise for monitoring and the first sensor outputed signal the liquid condition of transformer oil, for monitoring and the second sensor outputed signal the ambient conditions of transformer oil storage space outside, the data processing module be connected with described first sensor and the second sensor respectively, and the communication module, central controller and the output device that are connected with described data processing module successively.Transformer oil quality on-line monitoring device described in the utility model, can overcome the defects such as the low and scope of application of poor anti jamming capability in prior art, monitoring accuracy is little, to realize the advantage that antijamming capability is good, monitoring accuracy is high and the scope of application is large.

Description

A transformer oil quality online monitoring device

technical field

The utility model relates to the technical field of transformer monitoring, in particular to an online transformer oil quality monitoring device.

Background technique

The transformer in the power system is an equipment with large investment and important position, but the transformer has been subjected to electrical, mechanical, chemical and environmental influences for a long time during operation. Transformer oil is also affected by these factors. These comprehensive factors will inevitably cause some technical indicators of transformer oil to fail to meet the requirements for safe operation of transformers. Although the preventive test has played a huge role in my country's power system, this method of monitoring and maintenance according to the schedule has certain defects. Not only the defects of the equipment cannot be found immediately, but also it wastes manpower and financial resources and cannot fully achieve the expected results. In addition, its main defect is that the technical indicators of transformer oil detected in the laboratory cannot truly reflect the real-time technical indicators of transformer oil under live conditions. Not to mention the real-time discovery of problems and real-time processing to avoid transformer accidents. Online (status) monitoring came into being. To realize the status monitoring of electrical equipment, it is necessary to have online monitoring equipment, and to realize the real-time measurement of the equipment is the real status monitoring.

The traditional method of measuring the dielectric strength of transformer oil is all off-line measurement. Years of experience have proved that the traditional method is feasible. At that time, due to the limitation of science and technology, only off-line measurement can be taken. Practice has proved that its measurement results have great dispersion. sex. Due to the many factors causing measurement errors during the measurement process, due to the lack of control in the processing process and high dispersion, some results are true and false, especially the values of the same oil sample measured at different times are very different, which cannot be reasonably explained . This is because the off-line measurement method cannot truly reflect the quality of transformer oil.

In the process of realizing the utility model, the inventors found that the prior art at least has defects such as poor anti-interference ability, low monitoring precision and narrow application range. the

Utility model content

The purpose of this utility model is to propose an online monitoring device for transformer oil quality in view of the above problems, so as to realize the advantages of good anti-interference ability, high monitoring precision and wide application range.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an online transformer oil quality monitoring device, including a first sensor for monitoring the liquid state of the transformer oil and outputting a signal, for monitoring the external temperature of the transformer oil storage space. A second sensor that monitors the state of the surrounding environment and outputs a signal, a data processing module that is connected to the first sensor and the second sensor respectively, and a communication module, a central controller, and an output device that are sequentially connected to the data processing module .

Further, the output device includes a display and/or an audible and visual alarm connected to the central controller.

Further, the first sensor is specifically one or more of a viscosity sensor, a dielectric constant sensor, a humidity sensor, a temperature sensor, and a chemical component adsorption sensor.

Further, the second sensor is specifically one or more of an electric field strength sensor, a magnetic field strength sensor, a humidity sensor, a temperature sensor and a light sensor.

Further, the data processing module specifically includes a CPU or a single-chip microcomputer.

The transformer oil quality online monitoring device of each embodiment of the utility model includes a first sensor for monitoring the liquid state of the transformer oil and outputting a signal, and is used for monitoring and outputting the state of the surrounding environment outside the transformer oil storage space. The second sensor of the signal, the data processing module connected with the first sensor and the second sensor respectively, and the communication module, the central controller and the output device connected with the data processing module in turn; thus can overcome the poor anti-interference ability in the prior art , Low monitoring accuracy and small application range defects, in order to achieve the advantages of good anti-interference ability, high monitoring accuracy and large application range.

Other features and advantages of the present invention will be set forth in the following description, and, in part, will be apparent from the description, or can be learned by practicing the present invention.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a structural schematic diagram of the transformer oil quality online monitoring device of the present invention.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

According to an embodiment of the present invention, as shown in FIG. 1 , an online transformer oil quality monitoring device is provided.

The transformer oil quality online monitoring device of the utility model comprises a first sensor, a second sensor, a data processing module, a communication module, an audible and visual alarm, a display and a central controller; The data processing module is connected, the data processing module is connected with the central controller through the communication module, and the central controller is connected with the sound and light alarm and the display.

In the above embodiments, the first sensor is used to monitor the liquid state of the transformer oil and output a signal, and the second sensor is used to monitor the state of the surrounding environment outside the transformer oil storage space and output a signal. The data output ends of the first sensor and the second sensor are respectively connected with the data processing module, the data processing module is connected with the central controller through the communication module, and the central controller is connected with the sound and light alarm and the display. The first sensor includes one or more of a viscosity sensor, a dielectric constant sensor, a humidity sensor, a temperature sensor, and a chemical component adsorption sensor. The second sensor includes one or more of an electric field strength sensor, a magnetic field strength sensor, a humidity sensor, a temperature sensor, and a light sensor.

The transformer oil quality online monitoring device of the utility model, when in use, the first sensor and the second sensor respectively monitor the location in real time, and transmit the monitored transformer oil oil quality data and the data of the external space to the data processing module for further processing. processing, and then sent to the central controller through the communication module, the central controller will compare the received monitoring data with the preset comparison data in real time, when the data of oil quality and external space are different from the preset data and the difference exceeds a certain When it is within range, the central controller sends an alarm signal to the sound and light alarm, and the sound and light alarm sends out an alarm. At the same time, the central controller sends the compared data to the display screen for the staff to check for maintenance of the equipment.

The beneficial effects of the utility model are:

(1) Real-time online monitoring of transformer oil can be carried out to obtain the liquid state of transformer oil, so as to facilitate real-time grasp of the quality of transformer oil.

(2) It can also monitor the surrounding environment outside the storage space of the transformer oil, and grasp the operating status of the equipment, so as to predict the state of the internal and external environment of the transformer oil, which is convenient for better management of the transformer equipment.

(3) When there is a problem with the transformer oil quality, the device can give a real-time alarm and display the transformer oil quality data on the display, which ensures the normal operation of the equipment and facilitates accurate maintenance for the staff. Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. A transformer oil quality online monitoring device, characterized in that it includes a first sensor for monitoring the liquid state of the transformer oil and outputting a signal, for monitoring and outputting the surrounding environment state outside the transformer oil storage space A second sensor for signals, a data processing module respectively connected to the first sensor and the second sensor, and a communication module, a central controller and an output device sequentially connected to the data processing module. 2 . The transformer oil quality online monitoring device according to claim 1 , wherein the output device includes a display and/or an audible and visual alarm connected to the central controller. 3 . 3. The transformer oil quality online monitoring device according to claim 1 or 2, wherein the first sensor is specifically a viscosity sensor, a dielectric constant sensor, a humidity sensor, a temperature sensor and a chemical component adsorption sensor one or more of. 4. The transformer oil quality online monitoring device according to claim 1 or 2, wherein the second sensor is specifically one of an electric field strength sensor, a magnetic field strength sensor, a humidity sensor, a temperature sensor and a light sensor or Several kinds. 5. The transformer oil quality online monitoring device according to claim 1 or 2, characterized in that the data processing module specifically includes a CPU or a single-chip microcomputer.