Early warning method and early warning system for deflagration of transformer
By processing and comparing and analyzing the multi-dimensional basic data of the transformer, an explosion-flame warning was made, which solved the power system safety problems caused by the explosion-flame of the transformer, and achieved the timeliness and effectiveness of the early warning.
Patent Information
- Application Number
- CN202510233284.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-05-30
AI Technical Summary
During operation, the transformer may experience changes such as oil temperature rise, winding temperature rise, oil level change and local discharge, resulting in the transformer explosion, causing fire, explosion and toxic gas leakage, affecting the safe operation of the power system.
By collecting the multi-dimensional basic data of the transformer, including gas relay action data, pressure relay action data, winding temperature data, oil surface temperature data, oil level data, composition and content data of dissolved gas in the oil, weak current change data and local discharge signal data, these data are processed and compared and analyzed to make a detonation warning.
It realizes a timely warning of the detonation of transformers, reduces the possibility of detonation, ensures the safe and stable operation of the power system, and reduces social and economic losses.
Smart Images
Figure CN120071575A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of transformer early warning, and particularly provides a transformer explosion combustion early warning method and an early warning system. Background Art
[0002] As one of the important components of a substation, the safe operation of a transformer plays a crucial role in the safe and stable operation of the entire power grid. During operation, the transformer will experience changes such as increased oil temperature, increased winding temperature, oil level change, and partial discharge, which may lead to transformer explosion combustion. Transformer explosion combustion will not only cause dangers such as fire, explosion, and leakage of toxic gases, but also affect the safe operation of the entire power system, resulting in extremely serious social and economic losses.
[0003] Therefore, providing a transformer explosion combustion early warning method and an early warning system to achieve early warning of transformer explosion combustion and reduce the occurrence of transformer explosion combustion has become an urgent problem to be solved. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to provide a transformer explosion combustion early warning method and an early warning system to solve the problems existing in the prior art.
[0005] On the one hand, the present invention provides a transformer explosion combustion early warning method, including:
[0006] Collecting basic transformer data, where the basic transformer data includes transformer gas relay action data, transformer pressure relay action data, transformer winding temperature data, transformer oil surface temperature data, transformer oil level data, the composition and content data of dissolved gases in transformer oil, weak current change data in the transformer, and transformer partial discharge signal data;
[0007] Processing the basic transformer data and comparing and analyzing the processed data with transformer operation experience data to make an explosion combustion early warning.
[0008] Preferably, processing the basic transformer data includes:
[0009] Judging whether the transformer winding temperature data, transformer oil surface temperature data, and transformer oil level data exceed a preset threshold, and converting the judgment result into digital quantity data.
[0010] Further preferably, the transformer gas relay action data and transformer pressure relay action data are digital quantity data; the composition and content data of dissolved gases in transformer oil, weak current change data in the transformer, and transformer partial discharge signal data are analog quantity data.
[0011] The present invention also provides a transformer explosion combustion early warning system, including:
[0012] Transformer basic data collection unit, which is used to collect transformer basic data. Among them, the transformer basic data includes transformer gas relay action data, transformer pressure relay action data, transformer winding temperature data, transformer oil surface temperature data, transformer oil level data, component and content data of dissolved gases in transformer oil, weak current change data in transformer, and transformer partial discharge signal data;
[0013] Data processing and early warning unit, which is used to process the transformer basic data, compare and analyze the processed data with transformer operation experience data, and issue an explosion and combustion early warning.
[0014] Preferably, the function of the data processing and early warning unit is integrated by the comprehensive application host.
[0015] Further preferably, the transformer basic data collection unit and the data processing and early warning unit are connected through a network switch.
[0016] Further preferably, the data processing and early warning unit includes:
[0017] Judgment unit, which is used to judge whether the transformer winding temperature data, transformer oil surface temperature data, and transformer oil level data exceed the preset threshold;
[0018] Data conversion unit, which is used to convert the judgment result into digital quantity data;
[0019] Further preferably, the transformer gas relay action data and the transformer pressure relay action data are digital quantity data; the component and content data of dissolved gases in transformer oil, the weak current change data in transformer, and the transformer partial discharge signal data are analog quantity data.
[0020] Further preferably, the transformer gas relay action data is obtained by detecting the action of the transformer gas relay;
[0021] The transformer pressure relay action data is obtained by detecting the action of the transformer pressure relay;
[0022] The transformer winding temperature data is obtained by detecting with a transformer winding thermometer;
[0023] The transformer oil surface temperature data is obtained by detecting with a transformer oil surface thermometer;
[0024] The transformer oil level data is obtained by detecting with a transformer oil level gauge;
[0025] The component and content data of dissolved gases in transformer oil are obtained by analyzing with a transformer oil chromatograph monitoring device;
[0026] The data of the weak current change in the transformer is monitored by a transformer weak current monitoring device;
[0027] The data of the partial discharge signal of the transformer is monitored by a transformer partial discharge sensor.
[0028] The transformer explosion combustion warning method and warning system provided by the present invention can make a timely warning of transformer explosion combustion by monitoring and analyzing multi-dimensional data (data related to transformer explosion combustion) during the actual use of the transformer in real time, thereby effectively avoiding the occurrence of transformer explosion combustion, ensuring the safe and stable operation of the power system, and reducing the social and economic losses caused by transformer explosion combustion. Brief Description of the Drawings
[0029] The present invention will be further described in detail below in conjunction with the drawings and embodiments:
[0030] Figure 1 It is a flowchart of the transformer explosion combustion warning method provided by the present invention;
[0031] Figure 2 It is a schematic structural diagram of the transformer explosion combustion warning system provided by the present invention;
[0032] Figure 3 It is a schematic logic diagram of the transformer explosion combustion warning method provided by the present invention. Specific Embodiments
[0033] The present invention will be further explained below in conjunction with specific implementation schemes, but the present invention is not limited thereto.
[0034] As Figure 1 shown, the present invention provides a transformer explosion combustion warning method, including:
[0035] S1: Collect the basic data of the transformer, wherein the basic data of the transformer includes the action data of the transformer gas relay, the action data of the transformer pressure relay, the winding temperature data of the transformer, the oil surface temperature data of the transformer, the oil level data of the transformer, the composition and content data of the dissolved gas in the transformer oil, the weak current change data in the transformer, and the partial discharge signal data of the transformer;
[0036] S2: Process the basic data of the transformer and compare and analyze the processed data with the transformer operation experience data to make an explosion combustion warning.
[0037] As an improvement of the technical solution, processing the basic data of the transformer includes:
[0038] Judge whether the winding temperature data of the transformer, the oil surface temperature data of the transformer, and the oil level data of the transformer exceed the preset threshold, and convert the judgment result into digital quantity data;
[0039] In addition, the operating data of the transformer gas relay and the operating data of the transformer pressure relay are digital quantity data;
[0040] The composition and content data of the dissolved gases in the transformer oil, the weak current change data in the transformer, and the partial discharge signal data of the transformer are analog quantity data;
[0041] As Figure 3 shown, by classifying, comparing, and analyzing the above data, and referring to the previous operating experience data of the transformer, a deflagration warning is made.
[0042] As Figure 2 shown, the present invention also provides a transformer deflagration warning system, including:
[0043] A transformer basic data collection unit for collecting transformer basic data, wherein the transformer basic data includes the operating data of the transformer gas relay, the operating data of the transformer pressure relay, the transformer winding temperature data, the transformer oil surface temperature data, the transformer oil level data, the composition and content data of the dissolved gases in the transformer oil, the weak current change data in the transformer, and the partial discharge signal data of the transformer;
[0044] A data processing and warning unit for processing the transformer basic data and comparing and analyzing the processed data with the transformer operating experience data to issue a deflagration warning.
[0045] Among them, the function of the data processing and warning unit can be integrated by an integrated application host.
[0046] The transformer basic data collection unit supports access to different communication modes (including I / O digital quantity communication mode, 4-20 mA analog quantity acquisition mode, ModBus communication mode) and different types of data.
[0047] The transformer basic data collection unit and the data processing and warning unit can be connected through a network switch.
[0048] The transformer basic data collection unit and the data processing unit can be interconnected in accordance with DL / T860 standards.
[0049] As an improvement of the technical solution, the data processing and warning unit includes:
[0050] A judgment unit for judging whether the transformer winding temperature data, the transformer oil surface temperature data, and the transformer oil level data exceed a preset threshold;
[0051] A data conversion unit for converting the judgment result into digital quantity data;
[0052] In addition, the operation data of the transformer gas relay and the operation data of the transformer pressure relay are digital input data;
[0053] The composition and content data of the dissolved gases in the transformer oil, the weak current change data in the transformer, and the partial discharge signal data of the transformer are analog data;
[0054] By classifying, comparing, and analyzing the above data, and referring to the previous operation experience data of the transformer, a deflagration warning is made.
[0055] Among them, as Figure 2 shown, the operation data of the transformer gas relay can be obtained by detecting the operation of the transformer gas relay. Among them, the transformer gas relay is used to monitor the gas generated during internal faults of the transformer and make a switch response;
[0056] The operation data of the transformer pressure relay is obtained by detecting the operation of the transformer pressure relay. Among them, the transformer pressure relay is used to monitor the internal pressure of the transformer and make a switch response;
[0057] The transformer winding temperature data is detected by a transformer winding thermometer, and the detected temperature can be used to monitor the heating condition of the winding;
[0058] The transformer oil surface temperature data is detected by a transformer oil surface thermometer, which specifically monitors the temperature of the oil surface in the transformer tank to help judge the operation status and heat dissipation condition of the transformer;
[0059] The transformer oil level data is detected by a transformer oil level gauge. The transformer oil level gauge is used to indicate the liquid level of the oil in the transformer tank, and thus it can be judged whether the oil level is within the normal range to judge the normal heat dissipation and insulation performance of the transformer;
[0060] The composition and content data of the dissolved gases in the transformer oil are obtained by analyzing with a transformer oil chromatograph monitoring device. The above data can be used to diagnose whether there are latent faults inside the transformer, such as overheating, discharge, etc.; among them, the transformer oil chromatograph monitoring device can send the data monitored by the oil chromatograph through the RS485 interface. In addition to the traditional transformer oil chromatograph monitoring device, a monoacetylene gas monitoring device in transformer oil can also be used. Compared with the traditional on-line oil chromatograph monitoring device, the monoacetylene gas monitoring device in transformer oil adds a light source and reduces the gas chromatographic column separation part, with higher detection accuracy and faster speed;
[0061] The weak current change data in the transformer is monitored by a transformer weak current monitoring device, and the above data is used to timely detect potential problems such as insulation deterioration and partial discharge;
[0062] The partial discharge signal data of the transformer is monitored by a transformer partial discharge sensor to obtain the partial discharge signal inside the transformer. Subsequently, by analyzing the characteristics such as the frequency, amplitude, and phase of the above-mentioned discharge signal, the type of discharge can be determined.
[0063] This transformer deflagration warning method and warning system classify, compare, and analyze whether the action signal switch quantities of the transformer gas (i.e., light gas) relay and the transformer pressure relay act, whether the transformer winding temperature, the transformer oil surface temperature, and the transformer oil level exceed the limits, the changes in the composition and content of the dissolved gases in the oil, the changes in the weak current in the transformer, and the changes in the characteristics of the partial discharge signal inside the transformer, and make a deflagration warning with reference to the previous operation experience data of the transformer.
[0064] The specific embodiments of the present invention are written in a progressive manner, emphasizing the differences between each embodiment, and the similar parts can be referred to each other.
[0065] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.
Claims
1. A transformer explosion warning method, characterized in that: include: Collecting transformer basic data, wherein the transformer basic data includes transformer gas relay action data, transformer pressure relay action data, transformer winding temperature data, transformer oil surface temperature data, transformer oil level data, composition and content data of dissolved gas in transformer oil, transformer weak current change data and transformer partial discharge signal data; The transformer basic data is processed and the processed data is compared and analyzed with the transformer operation experience data to make a deflagration warning.
2. The transformer explosion warning method according to claim 1, characterized in that: Processing the transformer basic data includes: Determine whether the transformer winding temperature data, transformer oil level temperature data, and transformer oil level data exceed the preset threshold value, and convert the judgment result into switch quantity data.
3. The transformer explosion warning method according to claim 1 is characterized in that: The transformer gas relay action data and the transformer pressure relay action data are switch quantity data; the composition and content data of the dissolved gas in the transformer oil, the weak current change data in the transformer and the transformer partial discharge signal data are analog quantity data.
4. A transformer explosion warning system, characterized in that: include: A transformer basic data collection unit, used for collecting transformer basic data, wherein the transformer basic data includes transformer gas relay action data, transformer pressure relay action data, transformer winding temperature data, transformer oil surface temperature data, transformer oil level data, composition and content data of dissolved gas in transformer oil, transformer weak current change data and transformer partial discharge signal data; The data processing and early warning unit is used to process the basic data of the transformer and compare and analyze the processed data with the transformer operation experience data to make a deflagration early warning.
5. The transformer explosion warning system according to claim 4, characterized in that: The functions of the data processing and early warning unit are integrated by the comprehensive application host.
6. The transformer explosion warning system according to claim 4, characterized in that: The transformer basic data collection unit is connected to the data processing and early warning unit through a network switch.
7. The transformer explosion warning system according to claim 4, characterized in that: The data processing and early warning unit comprises: A judgment unit, used to judge whether the transformer winding temperature data, the transformer oil level temperature data, and the transformer oil level data exceed a preset threshold value; The data conversion unit is used to convert the judgment result into switch quantity data.
8. The transformer explosion warning system according to claim 4, characterized in that: The transformer gas relay action data and the transformer pressure relay action data are switch quantity data; the composition and content data of the dissolved gas in the transformer oil, the weak current change data in the transformer and the transformer partial discharge signal data are analog quantity data.
9. The transformer explosion warning system according to claim 4, characterized in that: The transformer gas relay action data is obtained by detecting the action of the transformer gas relay; The transformer pressure relay action data is obtained by detecting the action of the transformer pressure relay; The transformer winding temperature data is obtained by detecting the transformer winding thermometer; The transformer oil level temperature data is obtained by detecting the transformer oil level thermometer; The transformer oil level data is obtained through the transformer oil level gauge; The composition and content data of dissolved gas in transformer oil are obtained by analyzing the transformer oil chromatography monitoring device; The weak current change data in the transformer is obtained by monitoring the transformer weak current monitoring device; The transformer partial discharge signal data is obtained through monitoring of the transformer partial discharge sensor.