CN205562778U - Insulating monitoring calibration equipment of direct current system - Google Patents
Insulating monitoring calibration equipment of direct current system Download PDFInfo
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- CN205562778U CN205562778U CN201620203344.7U CN201620203344U CN205562778U CN 205562778 U CN205562778 U CN 205562778U CN 201620203344 U CN201620203344 U CN 201620203344U CN 205562778 U CN205562778 U CN 205562778U
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- power supply
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 238000012545 processing Methods 0.000 claims abstract description 33
- 238000012795 verification Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses an insulating monitoring calibration equipment of direct current system, the device is by the voltage acquisition module, AD collection module, data processing module, the watchdog module, the ground resistance array, ground connection capacitor array, adjustable DC power supply module, the alternating current power supply module, human -computer interface module, AD collection module is connected to the voltage acquisition module, AD collection module connects data processing module, watchdog module and human -computer interface module also are connected to data processing module respectively, the ground resistance array to the data processing module simultaneous control, ground connection capacitor array, adjustable DC power supply module and alternating current power supply module. The utility model discloses each intermodule coordination work can realize the insulating reduction of insulating monitoring, exchange the all -round check -up of scurrying functions such as electricity, the anti distributed capacitance of system to ensure the safe operation of DC power supply under reliable monitoring.
Description
Technical field
This utility model relates to straight-flow system insulating monitoring calibration equipment in a kind of transformer station, power plant.
Background technology
In order to ensure the security reliability of power system, relay protection and the working power of automaton, breaker control and energy storage etc. in power plant, transformer station all use by the DC source of batteries to store energy.During this DC source generation one point earth, it is necessary to find out ground path and earth point as early as possible, otherwise, second point ground connection once occurs, is likely to result in relay or the misoperation of protection device or tripping, thus causes tripping operation of bypassing the immediate leadership, lead to major accident.Therefore insulating monitoring is that transformer station, power plant are essential.But, a lot of transformer stations is when installing or change insulating monitoring, straight-flow system is in running status, cannot be carried out insulation reduce and exchange the inspection altering the functions such as electricity, and after insulating monitoring runs a period of time, cannot determine that functions of the equipments are the most intact so that straight-flow system exists bigger potential safety hazard.
Utility model content
In order to eliminate potential safety hazard present in above straight-flow system, this utility model aims to provide the straight-flow system insulating monitoring calibration equipment that a kind of reliability is high, stability is strong, safety is good, realize insulating monitoring insulation being reduced, exchanging the comprehensive verification altering the function such as electricity, the anti-distribution capacity of system, to guarantee DC source safe operation under monitoring reliably.
This utility model to achieve these goals, be the technical scheme is that
A kind of straight-flow system insulating monitoring calibration equipment is divided into voltage acquisition module, AD acquisition module, data processing module, watchdog module, earth resistance array, ground capacity array, adjustable DC power module, AC power supply module, human-computer interface module, voltage acquisition module connects AD acquisition module, AD acquisition module connects data processing module, watchdog module and human-computer interface module are also connected to data processing module, and data processing module controls earth resistance array, ground capacity array, adjustable DC power module and AC power supply module simultaneously.
Voltage acquisition module, for being converted to be suitable for the signal of AD acquisition module collection by the voltage signal received.Being by electric resistance partial pressure principle, use sampling with high precision resistance that bigger voltage signal is converted to less voltage signal, small voltage signal is converted to be suitable for the signal that AD acquisition module gathers through signal conditioning circuit.
AD acquisition module, for the analog signals of voltage acquisition module is converted to the digital signal read for data processing module, thus knows the size of voltage signal.AD acquisition module of the present utility model uses 16 high-speed AD chips.
Data processing module, receive the digital signal of AD acquisition module, know the size of voltage signal, and read the information set by human-computer interface module, and then control earth resistance array, ground capacity array, adjustable DC power module and AC power supply module require work according to setting.Data processing module of the present utility model uses 32 floating point number signal processors, it it is a technical grade high performance DSP that can be used for harsh and unforgiving environments scene, it it is the core component of whole product, additionally its CPU frequency is up to 150MHz, there is multiplexing universal input/output (GPIO) pin of up to 88 independently programmables, there are most 4 kinds of optional mode of operations, the logic control demand for GPIO can be met.
Watchdog module, for preventing the generation (deadlock that the situation such as unstable in strong jamming, power supply causes) of the CPU deadlock phenomenon of data processing module, it is ensured that equipment properly functioning.
Earth resistance array, the insulation being mainly used in verifying insulating monitoring reduces alarm.This module both positive and negative polarity over the ground between have one group of separate earth resistance array respectively, it is made up of the high-power high-accuracy resistance of different resistances, the corresponding relay of each resistance, data processing module controls the break-make of different relay, can combine the more resistance value of acquisition by the principle of resistant series.
Ground capacity array, it is mainly used in verifying the anti-distribution capacity of system of insulating monitoring, this module both positive and negative polarity over the ground between have one group of separate ground capacity array respectively, it is made up of different size of polarity free capacitor, the corresponding relay of each electric capacity, data processing module controls the break-make of different relay, can combine the more capacitance of acquisition by the principle that electric capacity is in parallel.
Adjustable DC power module, is mainly used in providing DC source for insulating monitoring, the DC voltage monitoring of verification insulating monitoring.It is made up of adjustable DC power supply and DA output circuit, adjustable DC power supply is used for exporting DC voltage, the output size of DC voltage is decided by that input controls the size of voltage, and data processing module is by controlling the control voltage signal of DA output circuit output, it is achieved the control to direct voltage output.
AC power supply module, pyroelectric monitor and warning function are altered in the exchange being mainly used in verifying insulating monitoring.Being made up of the transformator with two-way output, input voltage is AC220V, and alternating voltage controls whether output by the break-make of relay.
Human-computer interface module, exchanges with information for interacting between device and user.This is made up of high-resolution touch screen the human-computer interface module of utility model, and the operation of all functions of device is all realized by touch screen.The input form of multiple check box is introduced, by choosing the setting that can complete Various Complex combination function item in interface is set.The man machine interface of hommization also includes user's prompting of close friend, when carrying out the test of partial function item, liquid crystal interface there will be detailed prompting explanation, guide and smoothly complete test process.
The voltage acquisition module of this utility model straight-flow system insulating monitoring calibration equipment, AD acquisition module, data processing module, watchdog module, earth resistance array, ground capacity array, adjustable DC power module, AC power supply module and the mutual co-ordination of human-computer interface module, the insulation of the insulating monitoring to straight-flow system can be realized reduce, exchange the comprehensive verification altering the function such as electricity, the anti-distribution capacity of system, its voltage acquisition precision height, good reliability, the verification insulating monitoring of energy safe ready.Volume the most of the present utility model is little, conveniently moving, is suitable for verifying the insulating monitoring of different location.
Accompanying drawing explanation
Fig. 1 is block combiner schematic diagram of the present utility model
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further:
As shown in Figure 1, straight-flow system insulating monitoring calibration equipment is divided into voltage acquisition module, AD acquisition module, data processing module, watchdog module, earth resistance array, ground capacity array, adjustable DC power module, AC power supply module, human-computer interface module.Voltage acquisition module connects AD acquisition module, AD acquisition module connects data processing module, watchdog module and human-computer interface module are also connected to data processing module, and data processing module controls earth resistance array, ground capacity array, adjustable DC power module and AC power supply module simultaneously.
The bus input port of insulating monitoring is linked into the DC voltage output end mouth of straight-flow system insulating monitoring calibration equipment, the function verified as required, selects corresponding verifying function by the touch screen of operation human-computer interface module.
Insulation reduces the verification of alarm function: by arranging man machine interface, resistance value that selection is to be verified and polarity, data processing module controls the corresponding relay of electric resistance array and turns on by reading configuration information, reaches to verify resistance value by the series connection of resistance, it is achieved the verification of this function.
The verification of pyroelectric monitor and alarm function is altered in exchange: by arranging man machine interface, ac voltage that selection is to be verified and polarity, data processing module controls the conducting of corresponding relay to introduce the of ac of test by reading configuration information, it is achieved the verification of this function.
The verification of system anti-distribution capacity function: by arranging man machine interface, capacitance that selection is to be verified and polarity, data processing module controls the corresponding relay of capacitor array and turns on by reading configuration information, reach to verify capacitance by the parallel connection of electric capacity, to simulate in esse capacitive reactance interference, it is achieved the verification of this function.
Claims (8)
1. a straight-flow system insulating monitoring calibration equipment, it is characterized in that, including voltage acquisition module, AD acquisition module, data processing module, watchdog module, earth resistance array, ground capacity array, adjustable DC power module, AC power supply module, human-computer interface module, voltage acquisition module connects AD acquisition module, AD acquisition module connects data processing module, watchdog module and human-computer interface module are also connected to data processing module, data processing module controls earth resistance array simultaneously, ground capacity array, adjustable DC power module and AC power supply module；
Described voltage acquisition module, for being converted to be suitable for the signal of AD acquisition module collection by the voltage signal received；
Described AD acquisition module, for being converted to the digital signal read for CPU by the analog signals of voltage acquisition module；
Described data processing module, receive the digital signal of AD acquisition module, know the size of voltage signal, and read the information set by human-computer interface module, and then control earth resistance array, ground capacity array, adjustable DC power module and AC power supply module require work according to setting；
Described watchdog module, for preventing the generation of the CPU deadlock phenomenon of data processing module；
Described earth resistance array, the insulation being mainly used in verifying insulating monitoring reduces alarm；
Described ground capacity array, is mainly used in verifying the anti-distribution capacity of system of insulating monitoring；
Described adjustable DC power module, is mainly used in providing DC source, the DC voltage monitoring function of verification insulating monitoring for insulating monitoring；
Described AC power supply module, pyroelectric monitor and warning are altered in the exchange being mainly used in verifying insulating monitoring；
Described human-computer interface module, exchanges with information for interacting between device and user.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterized in that, voltage acquisition module uses electric resistance partial pressure principle to obtain small voltage signal, and small voltage signal connects signal conditioning circuit, is converted to small voltage signal be suitable for the signal that AD acquisition module gathers.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterised in that AD acquisition module uses 16 high-speed AD chips.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterised in that data processing module uses 32 floating point number signal processors.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterised in that the investing method of described earth resistance array is that data processing module realizes the series connection of different resistance by the break-make controlling relay.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterised in that the investing method of described ground capacity array is that data processing module realizes the parallel connection of different electric capacity by the break-make controlling relay.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterized in that, described adjustable DC power module is made up of adjustable DC power supply and DA output circuit, and the output of the DC voltage of adjustable DC power supply is that data processing module controls by controlling the output of DA chip.
Straight-flow system insulating monitoring calibration equipment the most according to claim 1, it is characterised in that the output of the alternating voltage of described AC power supply module is by the fixing output of transformator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620203344.7U CN205562778U (en) | 2016-03-16 | 2016-03-16 | Insulating monitoring calibration equipment of direct current system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620203344.7U CN205562778U (en) | 2016-03-16 | 2016-03-16 | Insulating monitoring calibration equipment of direct current system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205562778U true CN205562778U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620203344.7U Expired - Fee Related CN205562778U (en) | 2016-03-16 | 2016-03-16 | Insulating monitoring calibration equipment of direct current system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205562778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699927A (en) * | 2016-03-16 | 2016-06-22 | 国家电网公司 | DC system insulation monitor calibration device |
| CN108931752A (en) * | 2017-05-24 | 2018-12-04 | 国网新疆电力公司塔城供电公司 | A kind of insulating check device and insulating check instrument |
-
2016
- 2016-03-16 CN CN201620203344.7U patent/CN205562778U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699927A (en) * | 2016-03-16 | 2016-06-22 | 国家电网公司 | DC system insulation monitor calibration device |
| CN108931752A (en) * | 2017-05-24 | 2018-12-04 | 国网新疆电力公司塔城供电公司 | A kind of insulating check device and insulating check instrument |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20180316 |