CN203133265U - Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive - Google Patents
Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive Download PDFInfo
- Publication number
- CN203133265U CN203133265U CN 201320105252 CN201320105252U CN203133265U CN 203133265 U CN203133265 U CN 203133265U CN 201320105252 CN201320105252 CN 201320105252 CN 201320105252 U CN201320105252 U CN 201320105252U CN 203133265 U CN203133265 U CN 203133265U
- Authority
- CN
- China
- Prior art keywords
- module
- voltage
- mutual inductor
- central processing
- electric locomotive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model provides a hidden trouble monitor for the high voltage mutual inductor of a harmonious electric locomotive, comprising a signal acquisition module, a central processing module, a state displaying module and an alarm output module. The output terminal of the signal acquisition module is connected with the input terminal of the central processing module; the state displaying module and the alarm output module are respectively connected with the output terminal of the central processing module; the signal acquisition module comprises a tracking type current sensor for detecting a primary current, a tracking type voltage sensor for detecting secondary voltage, a temperature sensor for detecting a temperature signal and an analog-to-digital conversion module which is used for transforming the simulation signals detected by the sensors to digital signals which can be identified by the central processing module. According to the hidden trouble monitor for the high voltage mutual inductor of a harmonious electric locomotive, the precision of the primary current and secondary voltage signals of the high voltage mutual inductor of a harmonious electric locomotive is raised, fault alarm is effectively provided, precious time is achieved for preparation for processing a fault, and the security of railway transportation is substantially raised.
Description
Technical field
The utility model relates to syntonic type electric locomotive high voltage potential transformer field, is specifically related to a kind of syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor.
Background technology
In recent years, novel syntonic type electric locomotive is owing to have advantages such as output power is big, automaticity is high, failure rate is low, transportation progressively replaces traditional diesel locomotive and type electric locomotive status, Shaoshan in China Railway department, becomes main force's locomotive of mainline railway transportation.The syntonic type locomotive also progressively exposes some quality problems in some designs, technology and the manufacturing through in recent years extensive utilization.These problems can cause faults such as high-voltage mutual inductor self insulation reduction, inner short circuit in winding, phenomenons such as the generation high-voltage mutual inductor is creepage, burst cause power supply station's tripping operation, and the suspension accident frequently takes place, drive a vehicle normally order and entail dangers to traffic safety of havoc not only.For example, a lot of high voltage potential transformer faults took place in Nanchang Railway Bureau syntonic type locomotive in 2011, caused locomotive and accident between pantograph, had a strong impact on traffic safety.
High voltage potential transformer is mainly used in the locomotive power supply line voltage is monitored on the locomotive.Monitoring structure commonly used has two kinds, and a kind of is the oil-immersed and high-voltage voltage transformer (VT); Another kind is the dry-type high-voltage voltage transformer (VT).The used monitoring device structure of syntonic type locomotive is the latter.Damage phenomenon from high voltage potential transformer, the fault that harmonious locomotive monitoring device occurs mainly contains two kinds of situations, and a kind of is that puncture is ironed in the creepage sudden strain of a muscle of silicon rubber insulator; Another kind is high voltage potential transformer primary coil short circuit scaling loss.The main cause that puncture is ironed in the creepage sudden strain of a muscle of silicon rubber insulator is as follows: ⑴ is owing to voltage ripple of power network, and transient peak is excessive; ⑵ silicon rubber insulation sub-surface is stained; ⑶ manufacture and design defective.The main cause of high voltage potential transformer primary coil short circuit scaling loss is as follows: the ⑴ voltage ripple of power network, and transient peak is excessive; ⑵ in the same interval, multiple locomotive operation, the mains supply quality badness, the high-frequency harmonic component is big; ⑶ manufacture and design defective.
For first kind of fault, creepage distance and performance improve by improving designing and manufacturing level in producer, and the user often cleans insulator surface greasy dirt, dust etc., has received certain effect.
For second kind of fault, because various locomotive high-voltage mutual inductor is because of the difference of the technology of producer, employing and insulating medium etc., therefore its insulation, withstand voltage properties all are not quite similar, and how to judge whether the high-voltage mutual inductor duty normally becomes to guarantee safety, trouble-saving important topic.Therefore railway interests carried out special technical discussion and trouble-saving measure, prevented the generation of accident.And also high-voltage mutual inductor fault mechanism of production and early warning system are not studied comprehensively both at home and abroad at present.
The utility model content
The technical problems to be solved in the utility model is: a kind of syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor is provided, the potential faults in the syntonic type electric locomotive high-voltage mutual inductor is monitored.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor, and it is characterized in that: it comprises signal acquisition module, central processing module, state display module and alarm output module; Wherein the output terminal of signal acquisition module is connected with the input end of central processing module, and the state display module is connected with the output terminal of central processing module respectively with alarm output module;
Described signal acquisition module comprises: for detection of the following-up type current sensor of mutual inductor primary current, for detection of the following-up type voltage sensor of secondary voltage, for detection of the temperature sensor of temperature signal and to be used for the detected analog signal conversion of sensor be the analog-to-digital conversion module of the digital signal that can identify of central processing module.
Press such scheme, described following-up type current sensor is selected the centre path current sensor for use, and directly is enclosed within on the earth terminal copper cash of the former limit of locomotive voltage transformer (VT).
Press such scheme, described following-up type voltage sensor is connected in parallel on the voltage transformer (VT) secondary.
Press such scheme, it comprises also being connected on and falls the execution unit of bow in the loop that the control end of execution unit is connected with the output terminal of central processing module.
Press such scheme, described execution unit is relay, and the normally closed contact of relay is connected on and falls in the bow loop, and the control coil of relay is connected with the output terminal of central processing module.
The process of high voltage potential transformer fault is the process that the primary coil duty runs down, up to damaging high voltage potential transformer and transmission line of electricity.If we can the high voltage potential transformer duty run down during, design a cover and can detect the surveillance of this degradating trend, and send alerting signal, the accident that just can avoid locomotive therefore to cause takes place.The utility model just is being based on the mechanism that this fault produces, and the process that fault produces is monitored in real time, and pressed variation and mutual inductor running status according to net, uses rational fault verification algorithm, judges the duty of high-voltage mutual inductor.When detecting the mutual inductor running status when unusual, the central processing module of supervising device just is delivered to abnormal signal the locomotive control circuit.Locomotive control circuit control supervising device finish jump main disconnected and fall a series of protections actions such as bow, thereby avoided causing the generation that high-voltage mutual inductor is creepage, burst situation because of high-voltage mutual inductor self insulation reduction, inner short circuit in winding etc.
The beneficial effects of the utility model are:
1, by adopting the utility model structure, improved and detected the primary current signal of syntonic type electric locomotive high-voltage mutual inductor, the precision of secondary voltage signal, strengthened the judgement that whether has potential faults, can effectively make fault alarm, strive for the quality time for preparing handling failure, improved safety of railway transportation greatly.
2, adopt the computer automation control technology to handle and detect data, and monitor the running status that provides high-voltage mutual inductor in real time, in the reasonable analysis potential faults, also can realize the voice prompt alarm protection of hommization.
3, when fault is serious, also can fall the bow reservoir by the automatic control of the execution unit that increases and leak informaton, realize fast prompt drop bow, improve security of system.
Description of drawings
Fig. 1 is the structured flowchart of the utility model embodiment.
Fig. 2 is the signal acquisition module block diagram.
Fig. 3 is the installation site synoptic diagram of sensor in locomotive.
Among the figure: 1-following-up type current sensor, 2-digital temperature sensor, 3-following-up type voltage sensor, the former limit of 4-high voltage potential transformer, 5-the first connection terminal, 6-high voltage potential transformer, 7-the second connection terminal, 8-high voltage potential transformer secondary.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing and instantiation.
As shown in Figure 1, syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor comprises signal acquisition module, central processing module (being microprocessor in the present embodiment), state display module (being that a screen size is 4 cun LCDs in the present embodiment, state and temperature value when mainly showing the operation of high-voltage mutual inductor) and alarm output module; Wherein the output terminal of signal acquisition module is connected with the input end of central processing module, and the state display module is connected with the output terminal of central processing module respectively with alarm output module; Described signal acquisition module comprises: for detection of the following-up type current sensor of primary current, for detection of the following-up type voltage sensor of secondary voltage, for detection of the temperature sensor of temperature signal and to be used for the detected analog signal conversion of sensor be the analog-to-digital conversion module of the digital signal that can identify of central processing module.
In the present embodiment, the following-up type current sensor is selected the centre path current sensor for use, and directly is enclosed within on the earth terminal copper cash of the former limit of locomotive voltage transformer (VT); The following-up type voltage sensor is connected in parallel on the voltage transformer (VT) secondary.
Optionally, in order to improve security performance, this monitor comprises also and is connected on the execution unit that falls in the bow loop that the control end of execution unit is connected with the output terminal of central processing module.Execution unit is relay in the present embodiment, and the normally closed contact of relay is connected on and falls in the bow loop, and the control coil of relay is connected with the output terminal of central processing module.
In the present embodiment, power supply is taken from 110 volts of battery feeds of locomotive direct current, and step-down becomes detection system each several part required voltage behind power module; Digital signal after the analog to digital converter conversion is sent to central microprocessor, and microprocessor changes according to input signal, uses the fault verification algorithm that writes, and judges whether input signal exists unusually.If the time abnormal signal, then output a control signal to alarm output module.Alarm output module is finished warning, and when the signal severely subnormal, microprocessor is serially connected in by control and falls the relay normally closed contact of bow in the loop, and control is fallen the bow reservoir and leaked informaton automatically, realizes fast prompt drop bow; If not abnormal signal just outputs a control signal to display module.
As shown in Figure 2, the primary current of high voltage potential transformer passes through the following-up type current sensor measurement, and delivers to analog-to-digital conversion module with 0-20 milliamperes electric signal; Secondary current is measured through the following-up type voltage sensor, also delivers to analog-to-digital conversion module with 0-20 milliamperes electric signal; The temperature of high voltage potential transformer is measured through digital temperature sensor, delivers to microprocessor (CPU) with the digital code form.
As shown in Figure 3, following-up type voltage sensor 3 directly is enclosed within on the locomotive voltage transformer (VT) secondary 8 earth terminal copper flexible cords, detects the secondary voltage of high voltage potential transformer 6.Secondary voltage is taken from 150 volts of voltage lead-out terminals of secondary, is connected with analog-to-digital conversion module with second connection terminal 7 by cable; Following-up type current sensor 1 is connected on the former limit 4 of voltage transformer (VT), detects the primary current of high voltage potential transformer 6, and its output signal is delivered to analog-to-digital conversion module by cable and first connection terminal 5, sends into microprocessor after converting digital signal to; The temperature signal of the high voltage potential transformer 6 that digital temperature sensor 2 collects directly is digital signal, need not conversion and is directly inputted to microprocessor.
Claims (5)
1. syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor, it is characterized in that: it comprises signal acquisition module, central processing module, state display module and alarm output module; Wherein the output terminal of signal acquisition module is connected with the input end of central processing module, and the state display module is connected with the output terminal of central processing module respectively with alarm output module;
Described signal acquisition module comprises: for detection of the following-up type current sensor of mutual inductor primary current, for detection of the following-up type voltage sensor of secondary voltage, for detection of the temperature sensor of temperature signal and to be used for the detected analog signal conversion of sensor be the analog-to-digital conversion module of the digital signal that can identify of central processing module.
2. syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor according to claim 1, it is characterized in that: described following-up type current sensor is selected the punching voltage sensor for use, and directly is enclosed within on the earth terminal copper cash of the former limit of locomotive voltage transformer (VT).
3. syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor according to claim 1, it is characterized in that: described following-up type voltage sensor is connected in parallel on the voltage transformer (VT) secondary.
4. according to claim 1 or 2 or 3 described syntonic type electric locomotive high-voltage mutual inductor hidden danger monitors, it is characterized in that: it comprises also being connected on and falls the execution unit of bow in the loop that the control end of execution unit is connected with the output terminal of central processing module.
5. syntonic type electric locomotive high-voltage mutual inductor hidden danger monitor according to claim 4, it is characterized in that: described execution unit is relay, the normally closed contact of relay is connected on and falls in the bow loop, and the control coil of relay is connected with the output terminal of central processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105252 CN203133265U (en) | 2013-03-08 | 2013-03-08 | Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105252 CN203133265U (en) | 2013-03-08 | 2013-03-08 | Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133265U true CN203133265U (en) | 2013-08-14 |
Family
ID=48941234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320105252 Expired - Fee Related CN203133265U (en) | 2013-03-08 | 2013-03-08 | Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831129A (en) * | 2018-08-28 | 2018-11-16 | 中车兰州机车有限公司 | The test device of locomotive roof alarm for high voltage device |
-
2013
- 2013-03-08 CN CN 201320105252 patent/CN203133265U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831129A (en) * | 2018-08-28 | 2018-11-16 | 中车兰州机车有限公司 | The test device of locomotive roof alarm for high voltage device |
| CN108831129B (en) * | 2018-08-28 | 2024-02-06 | 中车兰州机车有限公司 | Testing device for locomotive roof high-voltage alarm device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201654160U (en) | Transformer core grounding AC-DC on-line monitoring device | |
| CN103675669B (en) | Breaker electrical endurance monitoring system and method | |
| CN202957123U (en) | Self-test and self-protection oil-immersed power transformer | |
| CN204243896U (en) | For the on off state monitoring device of power distribution network | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN103234576A (en) | State monitoring system for power devices in intelligent substations | |
| CN104330686A (en) | System for detecting power supply circuit fault | |
| CN103606889A (en) | Secondary side overcurrent protection circuit of electric arc furnace transformer | |
| CN105865532A (en) | Monitoring and alarming system for transformer substation secondary system TMOV lightning arrester main board | |
| CN203225510U (en) | Residual-current circuit breaker with self-checking function | |
| CN203133265U (en) | Hidden trouble monitor for high voltage mutual inductor of harmonious electric locomotive | |
| CN103983890A (en) | Search method for fault points generated due to the influence of alternating current crosstalk on relay and test circuit | |
| CN104678756A (en) | Novel intelligent comprehensive power transformation and distribution monitoring system | |
| CN103376389B (en) | A kind of fault electric arc for low-voltage circuit judges system and determination methods thereof | |
| CN206378569U (en) | A kind of voltage relay abnormal detector | |
| CN104701069A (en) | Automatic protecting device for circuit breaker energy storing system | |
| CN204575769U (en) | Secondary current loop of transforming plant state on_line monitoring system | |
| CN204166079U (en) | Secondary loop of breaker wiring testing device | |
| CN204992785U (en) | Take low voltage network monitored control system of trouble early warning and diagnostic function | |
| CN202710647U (en) | Monitoring device for direct current system | |
| CN201937242U (en) | Monitoring device of surge protector | |
| CN202693726U (en) | Detection circuit and detection system for electric transmission and transformation equipment | |
| CN202094621U (en) | Intelligent monitoring type surge protector | |
| CN204695489U (en) | Multiloop fire detecting arrangement | |
| CN104753047A (en) | Novel surge protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20150308 |
|
| EXPY | Termination of patent right or utility model |