CN201860126U - Monitoring protection comprehensive device of low voltage unit - Google Patents
Monitoring protection comprehensive device of low voltage unit Download PDFInfo
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- CN201860126U CN201860126U CN2010206132054U CN201020613205U CN201860126U CN 201860126 U CN201860126 U CN 201860126U CN 2010206132054 U CN2010206132054 U CN 2010206132054U CN 201020613205 U CN201020613205 U CN 201020613205U CN 201860126 U CN201860126 U CN 201860126U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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Abstract
The utility model discloses a monitoring protection comprehensive device of a low voltage unit. The monitoring protection comprehensive device comprises a CPU (central processing unit) control and data procession module, a current voltage collection module, a switch quantity collection module, a relay output module, a communication module, a clock module and an input-output module, wherein a power supply module provides power supply to the CPU control and data procession module; the CPU control and data procession module is in two-way connection with the communication module, the clock module and the input-output module respectively; and the output ends of the current voltage collection module and the switch quantity collection module are connected with the CPU control and data procession module, and the output end of the CPU control and data procession module is connected with the relay output module. With the adoption of the monitoring protection comprehensive device, the demand on the multiple functions of monitoring, controlling and protecting of the 400V low voltage unit can be met; the turning on and turning off sequential flow control, the automatic quasi-synchronization regulation and the electric protection of the low voltage unit can be finished independently.
Description
Technical field
The utility model relates to a kind of low pressure unit monitoring and protection integration unit.
Background technology
The monitoring and protection integration unit insufficiency face of existing 400V low pressure unit can only be finished the partial function of low pressure unit mostly, as automatic presynchronization be incorporated into the power networks adjustment, current protection or voltage protection function.The automatic startup-shutdown controlled function of unit is strong even do not have, and there is defective in defencive function, has the following disadvantages:
(1) the device disposal ability is not strong, and function singleness can't adapt to the on-the-spot needs that monitor control of concentrating; (2) unit protection function only limits to the function that conventional current or voltage relay are finished, and can not adapt to the requirement (revising functions such as definite value as realizing frequency protection, many cover protection operation definite values, remote dispatching) of electrical network; (3) partial devices can be finished automatic presynchronization and adjust function, but can not realize the automatic startup-shutdown function of unit, and integrated level is not high; (4) relay export volume few (mostly being 4-5) can't satisfy the multichannel output control requirement of low pressure unit; (5) external switch amount signal (as operation signal or unit startup-shutdown required input signal) collection is limited by device, can only gather several roads (less than 8 tunnel) input signal; (6) display module adopts charactron or LED lamp to show more, and information shows comprehensive inadequately, directly perceived, and detailed startup-shutdown record, unit accident action record can not be provided, and can't satisfy the actual needs of on-the-spot operation; (7) do not possess remote communicating function, even do not have the RS485 communication port; (8) the alternating current quantity sampling analysis is not comprehensive.
Summary of the invention
The purpose of this utility model is to provide a kind of low pressure unit monitoring and protection integration unit; to satisfy the needs of multiple functions such as the supervision of 400V low pressure unit, control and protection, can independently finish the control of startup-shutdown sequence flow, the automatic presynchronization adjustment of low pressure unit and be incorporated into the power networks and electic protection.
The purpose of this utility model is achieved through the following technical solutions:
Further, described CPU control and data processing module are selected high-performance microprocessor of 16 bit 80C196 for use, the PSD programmable system peripheral chip of outside expansion bands 256K FLASH, 32K RAM, 12 A/D chips independently.
Further; what wherein input/output module adopted is liquid crystal display and button operation module; wherein said liquid crystal display and button operation module comprise display module and 9 push-button units of 128 * 64 dot matrix; finish and show and the human-computer dialogue function; full Chinese character information shows, the menu mode operation interface, and disposes the startup-shutdown flow chart of simplification.
Further, described clock module adopts independently DS1307 clock chip, is electrically connected with CPU control and data processing module by the I2C bus.
Further, described power module provide 5V ,+12V ,-12V insulating power supply independently separately.
Further, described switch acquisition module adopts the photoelectricity isolation method to gather outside 16 way switch amount signals.
Operation principle of the present utility model is, described low pressure unit monitoring and protecting device is transformed to the required weak electric signal of device by the current and voltage signals sampling module with external voltage instrument transformer (TV), the miniature precision curtage instrument transformer of current transformer (TA) secondary singal in installing, play the Signal Spacing effect simultaneously, send into CPU control and data processing module again; Gather alternating current, the ac voltage signal of 8 passages simultaneously in real time, by acquisition channel (the high speed acquisition passage HSI of 80C196) the frequency acquisition signal of special use, on output module, show the operation electric parameters such as three-phase current, zero-sequence current, three-phase phase voltage, line voltage and system frequency of generator in real time.The utility model is gathered 16 way switch amount signals by the switch acquisition module, inserts generator circuit breaker normally closed contact signal, normal opened contact signal as the circuit breaker position remote signalling, finishes the supervision of generator circuit breaker state.Also can monitor non-electric accident signals such as field suppression switch state, outside circuit-breaker status, isolating switch state, bearing temperature signal and valve wide open simultaneously.The utility model also can be delivered to background monitoring system, remote dispatching end by the RS485 communication port by input module and each acquisition module with variety of event record, remote signalling amount, measurement data and value data, finishes the RTU function of telecommunication.
The utility model based on said structure can reach following technique effect:
1) at the low pressure unit; dispose electic protection function comprehensively; comprise syllogic composite voltage current protection, zero-sequence current protection, overload protection, overvoltage protection, under-voltage protection, zero sequence overvoltage protection, carrier current protection, underfrequency protection and non electrical quantity protection, realize the alarm of TV broken string, control loop abnormality alarming and device power fail warning.
2) be provided with automatic startup-shutdown function, automatic presynchronization and the adjustment function that is incorporated into the power networks.Automatically finish the start raising speed, close field suppression switch, excitation and build pressure, the automatic presynchronization flow operations that is incorporated into the power networks, starts shooting according to the unit control flow; can finish automatically by setup parameter and increase, load shedding, branch circuit breaker, divide shutdown operations such as field suppression switch, shutdown, input and releasing braking, accident and emergency shutdown operation.Can close gate or butterfly valve automatically according to setting after the shutdown.
3) its automaticity height, reliability height can be in the hydroelectric station than reliable and stable operations under the strong electromagnetic interference environment; It is reliable, the practical economic integrated protection control system of developing specially of a cover at the coordinative composition of equipments of village small station AC400V low pressure unit and operation characteristic.
In sum; low pressure unit monitoring and protecting device strong anti-interference performance described in the utility model, processing speed is fast, automaticity is high; possess perfect operation and event recording function; and clear display, directly perceived, comprehensive; data volume is big; be applicable to the needs of the multiple function such as supervision, control, protection of 400V low pressure unit, have bigger application value in the water power field.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model.
1-CPU control and data processing module 2-current/voltage acquisition module 3-switch acquisition module
4-relay output module 5-communication module 6-liquid crystal display and button operation module
7-clock module 8-power module.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment:
Present embodiment provides a kind of CPU of comprising control and data processing module 1, current-voltage sampling module 2, switch acquisition module 3, relay output module 4, communication module 5, clock module 7, liquid crystal display and button operation module 6 and power module 8, described CPU control and data processing module 1 respectively with described communication module 5, clock module 7 and liquid crystal display and 6 two-way connections of button operation module, wherein the output of current/voltage acquisition module 2 and switch acquisition module 3 inserts described CPU control and data processing module 1, the output cut-in relay output module 4 of described CPU control and data processing module 1.Each module is described in detail as follows:
The high-performance microprocessor of 16 bit 80C196 of described CPU control and data processing module 1 selected technology maturation, the PSD programmable system peripheral chip of outside expansion bands 256K FLASH, 32K RAM, data acquisition is finished by independently 12 A/D converter ADC12048, variable connector and active amplifier OP07 filter circuits etc., and design has WATCHDOG watchdog circuit MAX706.On veneer, finish functions such as data acquisition, protection, measurement, input and output, control and communication.Use E2PROM-2817 to preserve relevant protection definite value, device parameter etc., power down can keep.Power module provide 5V ,+12V ,-12V insulating power supply independently separately.
In the described current/voltage acquisition module 2: the AC sampling importation is transformed to the required weak electric signal of device with external voltage instrument transformer (TV), the miniature precision curtage instrument transformer of current transformer (TA) secondary singal in installing, play the Signal Spacing effect simultaneously, send into CPU control and data processing module again.
Described switch acquisition module 3 can be finished 16 tunnel remote signalling amounts (being switching value) collection, gathers behind all external signals process photoelectricity isolation filters; The external switch Stateful Inspection provides passive idle contact by the equipment of being monitored, and the remote signals power supply uses DC24V.
In the described relay output module 4, CPU carries out relay control signal output by I2C Bus Interface Chip PCF8584, PCF8574.Device provides 18 relay outlets, satisfies the requirement of protection tripping operation, and the automation requirement of unit startup-shutdown.Wherein 2 the tunnel are used for circuit breaker breaker tripping and closing control output, and 2 the tunnel are used to predict acoustic signal and the output of accident signal signal, and all the other 14 the tunnel are used for the control of unit startup-shutdown or adjust control output the same period.
Described communication module 5 adopts the RS485 communication interface, and the port that CPU carries is after the light lotus root isolates, and MAX481 realizes communication by the RS485 communication interface chip.
Described clock module 7 adopts the DS1307 real-time timepiece chip, and disposes the back-up source after the 3V lithium battery has a power failure as device, guarantees the reliability of clock.Be electrically connected with CPU control and data processing module by the I2C bus, CPU can read and be provided with real-time clock time.
Described liquid crystal display and button operation module 6 adopt graphic lcd, 9 buttons of 128 * 64 dot matrix, finish to show and the human-computer dialogue function, and full Chinese character information shows, the menu mode operation interface, and disposes the startup-shutdown flow chart of simplification.
Described power module 8 adopts wide voltage stabilized range, switchette power supply that antijamming capability is strong, have 3 kinds of different voltage output+5V ,+12V ,-12V, and every group of power supply all has the function of output short-circuit and overload protection.
Claims (5)
1.
A kind of low pressure unit monitoring and protection integration unit; comprise CPU control and data processing module by the power module power supply; the current-voltage sampling module; the switch acquisition module; relay output module; communication module; clock module and input/output module; it is characterized in that; described CPU control and data processing module respectively with described communication module; clock module is connected with input/output module is two-way; wherein the output of current/voltage acquisition module and switch acquisition module inserts described CPU control and data processing module, the output cut-in relay output module of described CPU control and data processing module.
2. according to the described low pressure unit of claim 1 monitoring and protection integration unit; it is characterized in that; described CPU control and data processing module are selected microprocessor of 16 bit 80C196 for use, the PSD programmable system peripheral chip of outside expansion bands 256K FLASH, 32K RAM, 12 A/D chips independently.
3. according to the described low pressure unit of claim 1 monitoring and protection integration unit; it is characterized in that; what described input/output module adopted is liquid crystal display and button operation module, and wherein liquid crystal display and button operation module comprise display module and 9 push-button units of 128 * 64 dot matrix.
4. according to the described low pressure unit of claim 1 monitoring and protection integration unit, it is characterized in that described clock module adopts independently DS1307 clock chip, be electrically connected with CPU control and data processing module by the I2C bus.
5. according to the described low pressure unit of one of claim 1-4 monitoring and protection integration unit, it is characterized in that, described power module provide 5V ,+12V ,-12V insulating power supply independently separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206132054U CN201860126U (en) | 2010-11-18 | 2010-11-18 | Monitoring protection comprehensive device of low voltage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206132054U CN201860126U (en) | 2010-11-18 | 2010-11-18 | Monitoring protection comprehensive device of low voltage unit |
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| Publication Number | Publication Date |
|---|---|
| CN201860126U true CN201860126U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206132054U Expired - Lifetime CN201860126U (en) | 2010-11-18 | 2010-11-18 | Monitoring protection comprehensive device of low voltage unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324791A (en) * | 2011-09-29 | 2012-01-18 | 珠海许继电气有限公司 | Remote comprehensive maintenance system for distribution network |
| CN103296593A (en) * | 2013-06-25 | 2013-09-11 | 山东五洲电气股份有限公司 | Switch cabinet intelligent air cooling controller |
| CN103439938A (en) * | 2013-08-20 | 2013-12-11 | 国家电网公司 | Small hydropower station control system |
-
2010
- 2010-11-18 CN CN2010206132054U patent/CN201860126U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324791A (en) * | 2011-09-29 | 2012-01-18 | 珠海许继电气有限公司 | Remote comprehensive maintenance system for distribution network |
| CN103296593A (en) * | 2013-06-25 | 2013-09-11 | 山东五洲电气股份有限公司 | Switch cabinet intelligent air cooling controller |
| CN103296593B (en) * | 2013-06-25 | 2016-06-29 | 山东五洲电气股份有限公司 | A kind of Intelligent switch cabinet air-cooled controller |
| CN106058681A (en) * | 2013-06-25 | 2016-10-26 | 山东五洲电气股份有限公司 | Switch cabinet smart wind cooling controller easy to maintain |
| CN103439938A (en) * | 2013-08-20 | 2013-12-11 | 国家电网公司 | Small hydropower station control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111122 Address after: 410205 Hunan province Changsha high tech Zone Lusong Lu Valley Road Patentee after: HNAC Technology Co., Ltd. Address before: 410205 Hunan province Changsha high tech Zone Lusong Lu Valley Road Patentee before: Hunan Huazi Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |