CN212808540U - Generator rotor turn-to-turn short circuit real-time early warning device based on operation data - Google Patents
Generator rotor turn-to-turn short circuit real-time early warning device based on operation data Download PDFInfo
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- CN212808540U CN212808540U CN202021737029.5U CN202021737029U CN212808540U CN 212808540 U CN212808540 U CN 212808540U CN 202021737029 U CN202021737029 U CN 202021737029U CN 212808540 U CN212808540 U CN 212808540U
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Abstract
The utility model provides a generator rotor interturn short circuit real-time early warning device based on operating data, including data acquisition module, data preprocessing module, data calculation analysis module and early warning report propelling movement module, the data acquisition module is connected with on-line monitoring system, data preprocessing module respectively, gives the screening of data preprocessing module with the generator real-time operating data of gathering, and data preprocessing module is connected with data calculation analysis module and gives the early warning result to the data calculation analysis after the screening, and data calculation analysis module is connected with early warning report propelling movement module and is convenient for cycle propelling movement early warning result, and early warning report propelling movement module and PC terminal are connected and convey the early warning result to PC terminal. The utility model discloses realize the operation monitoring and the online real-time early warning of generator rotor interturn short-circuit fault, discover early trouble as early as possible, avoid further development to cause malignant accident, effectively promote generator operational reliability and security.
Description
Technical Field
The utility model relates to a power equipment detects technical field, especially relates to a generator rotor interturn short circuit real-time early warning device based on operational data.
Background
The rotor of the generator is the most important rotating part of the generator, the health condition of the rotor has great significance on the operation safety and the operation efficiency of the generator set, and the thermal power generating unit deeply participates in the peak shaving of the power system and provides higher requirements for the performance and the reliability of the generator.
Once turn-to-turn short circuit fault occurs to a generator rotor, the generator rotor is not only exposed to greater safety risk, and causes the fault of the generator and electrical equipment connected with the generator rotor, and causes impact to a power grid, but also needs longer overhaul period (returning to a factory for overhaul at least more than 45 days), extremely high overhaul cost (direct economic loss more than 500 ten thousand yuan, electric quantity loss more than 45 days), and the like.
However, the monitoring indexes cannot effectively reflect the early faults such as slight short circuit of turn-to-turn insulation of the generator rotor, and can only rely on an off-line test method for detection, and online detection cannot be performed, so that the early faults are further developed and aggravated, and even risk of serious accidents such as non-stop of a unit is caused, and certain limitations and disadvantages exist.
In addition, the patent with the application number of 202010407897.5 discloses a generator rotor turn-to-turn short circuit judgment algorithm based on an electrical quantity, which provides feasibility for processing data related to the generator rotor turn-to-turn short circuit.
SUMMERY OF THE UTILITY MODEL
To foretell technical problem, the utility model provides a generator rotor interturn short circuit real-time early warning device based on operational data for solve the not enough problem of on-line measuring means of generator rotor interturn short circuit fault among the prior art.
In order to achieve the above purpose, the technical solution of the present invention is realized as follows:
a generator rotor turn-to-turn short circuit real-time early warning device based on operation data comprises a data acquisition module, a data preprocessing module, a data calculation and analysis module and an early warning report pushing module; the data acquisition module is respectively connected with the generator online monitoring system and the data preprocessing module, the data preprocessing module is connected with the data calculation and analysis module, the data calculation and analysis module is connected with the early warning report pushing module, and the early warning report pushing module is connected with the PC terminal; the data acquisition module is used for acquiring real-time operation data of the generator; the data preprocessing module is used for screening the acquired data; the data calculation and analysis module is used for calculating and analyzing the acquired data to obtain an early warning result; and the early warning report pushing module is used for pushing the early warning result and transmitting the early warning result to the PC terminal.
The intelligent early warning system further comprises a power supply module, wherein the power supply module is respectively connected with the data acquisition module, the data preprocessing module, the data calculation and analysis module and the early warning report pushing module.
Further, the data acquisition module adopts a Modbus-RTU protocol to carry out data communication with the generator on-line monitoring system.
Further, the generator online monitoring system is a DCS system.
Furthermore, the data acquisition module is connected with a DCS system, and the DCS system is used for monitoring, controlling and managing the generator.
Further, the on-line generator monitoring system is a fault recorder.
Furthermore, the data acquisition module is connected with a fault recorder, and the fault recorder is used for recording the change condition of the electric quantity before and after the generator fault.
The utility model has the advantages that: the utility model discloses a Modbus-RTU agreement carries out data communication with generator on-line monitoring system, acquires generator real-time operation data and carries out computational analysis, can realize the on-line measuring and the early warning of generator rotor interturn short circuit to regularly propelling movement early warning report to PC terminal, the early trouble of discovery generator that lets the customer can be timely, avoid the further development aggravation of trouble to cause the malignant accident such as unit non-stop, provide technical guarantee for generator rotor safe operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in FIG. 1, the utility model relates to a generator rotor interturn short circuit real-time early warning device based on operational data, including data acquisition module, data preprocessing module, data calculation analysis module, early warning report propelling movement module and PC terminal, data acquisition module is connected with data preprocessing module, and data preprocessing module is connected with data calculation analysis module, and data calculation analysis module is connected with early warning report propelling movement module, and early warning report propelling movement module and PC terminal are connected; the data acquisition module acquires the real-time running data of the generator to acquire the real-time running data of the generator in the real-time early warning device in real time and transmits the real-time running data of the generator to a data bus; the data preprocessing module screens the acquired real-time operation data, screens out data which do not meet requirements and then sends the data to the data calculation and analysis module; the data calculation and analysis module inputs inherent parameters of the generator, calculates and analyzes the inherent parameters and the acquired real-time operation data, outputs an evaluation result, and outputs the result to the early warning report pushing module; the early warning report pushing module can push the early warning result according to the customized period and transmit the early warning result to the PC terminal. Through on-line monitoring, can acquire generator operation data in real time at the generator normal operating in-process, carry out generator rotor turn-to-turn short circuit defect detection and early warning, the operation monitoring and the online real-time early warning of generator rotor turn-to-turn short circuit fault have been realized, let the early fault of discovery generator that the customer can be timely, avoid the further development aggravation of trouble to cause malignant accidents such as unit non-stop, effectively promoted generator operation reliability and security, and need not shut down and overhaul, improve production efficiency and saved the cost.
Further, the data acquisition module automatically carries out data communication with the generator online monitoring system by adopting a Modbus-RTU protocol, and acquires real-time operation data of the generator, wherein the real-time operation data comprises stator voltage, current, active power, exciting current and power factor, and the real-time operation data is a plurality of groups of data in a certain time; the data acquisition module is communicated with the data preprocessing module by adopting an MQTT protocol, and the data acquisition module issues acquired real-time operation data to an MQTT bus, so that the data preprocessing module can conveniently screen the real-time operation data.
Further, the on-line generator monitoring system is a DCS system or a fault recorder. In this embodiment, a DCS system is used to monitor, control and manage the generator and its system, and a data acquisition module communicates with the DCS system to acquire real-time operating data of the generator; in other embodiments, a fault recorder may be disposed in the generator to monitor and record a change condition of the electrical quantity before and after the generator fails, and the data acquisition module communicates with the fault recorder to acquire the changed data as real-time operation data.
Furthermore, the data preprocessing module can screen a plurality of groups of collected real-time operation data of the generators and remove data which do not meet requirements, wherein the data which do not meet requirements comprise the in-phase operation data of the generators, the data with the load rate of below 30 percent and the large-amplitude fluctuation data of the loads of the generators in a short period.
Furthermore, the data calculation and analysis module can input inherent parameters of the generator, the inherent parameters comprise direct current resistance and synchronous reactance of a stator of the generator, the data calculation and analysis module is communicated with the early warning report pushing module by adopting an MQTT protocol, meanwhile, the data calculation and analysis module can subscribe source data of the data preprocessing module and front-end data forwarded by the middleware, and after the inherent parameters of the generator and the preprocessed data are calculated by a generator rotor turn-to-turn short circuit judgment algorithm based on electric quantity, an evaluation result, namely an early warning result, is output and is published to an MQTT bus, so that the early warning report pushing module can use the early warning result conveniently.
Furthermore, the early warning report pushing module can automatically issue a report according to an early warning result, can automatically push the report to a client according to a set period, can manually detect a flow at any time according to requirements, and can automatically push the early warning result.
The front end of management software of the real-time early warning device is developed by a VUE framework or HTML + CSS; the management software background is developed by adopting Python + flash language, and the database adopts Mysql database. And a reserved expansion module is also arranged in the real-time early warning device and is used for carrying out system expansion in the later stage.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A generator rotor turn-to-turn short circuit real-time early warning device based on operation data is characterized by comprising a data acquisition module, a data preprocessing module, a data calculation and analysis module and an early warning report pushing module; the data acquisition module is respectively connected with the generator online monitoring system and the data preprocessing module, the data preprocessing module is connected with the data calculation and analysis module, the data calculation and analysis module is connected with the early warning report pushing module, and the early warning report pushing module is connected with the PC terminal; the data acquisition module is used for acquiring real-time operation data of the generator; the data preprocessing module is used for screening the acquired data; the data calculation and analysis module is used for calculating and analyzing the acquired data to obtain an early warning result; and the early warning report pushing module is used for pushing the early warning result and transmitting the early warning result to the PC terminal.
2. The running data-based generator rotor turn-to-turn short circuit real-time early warning device according to claim 1, further comprising a power module, wherein the power module is respectively connected with the data acquisition module, the data preprocessing module, the data calculation and analysis module, and the early warning report pushing module.
3. The real-time running data-based generator rotor turn-to-turn short circuit early warning device according to claim 1 or 2, wherein the data acquisition module is in data communication with the generator online monitoring system by adopting a Modbus-RTU protocol.
4. The real-time early warning device for turn-to-turn short circuit of generator rotor based on operation data of claim 3, wherein the generator on-line monitoring system is a DCS system.
5. The real-time generator rotor turn-to-turn short circuit early warning device based on the operation data of claim 4, wherein the data acquisition module is connected with a DCS system, and the DCS system is used for monitoring, controlling and managing the generator.
6. The real-time early warning device for turn-to-turn short circuit of generator rotor based on operation data as claimed in claim 3, wherein the generator on-line monitoring system is a fault recorder.
7. The real-time running data-based generator rotor turn-to-turn short circuit early warning device as claimed in claim 6, wherein the data acquisition module is connected with a fault recorder, and the fault recorder is used for recording the change condition of the electrical quantity before and after the generator fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021737029.5U CN212808540U (en) | 2020-08-19 | 2020-08-19 | Generator rotor turn-to-turn short circuit real-time early warning device based on operation data |
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| CN202021737029.5U CN212808540U (en) | 2020-08-19 | 2020-08-19 | Generator rotor turn-to-turn short circuit real-time early warning device based on operation data |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391235A (en) * | 2021-06-04 | 2021-09-14 | 华北电力大学（保定） | System and method for detecting dynamic turn-to-turn short circuit fault of synchronous generator rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391235A (en) * | 2021-06-04 | 2021-09-14 | 华北电力大学（保定） | System and method for detecting dynamic turn-to-turn short circuit fault of synchronous generator rotor |
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