CN204103599U - Layered distribution type hydroelectric station Direct Current Power Supervise Control System - Google Patents
Layered distribution type hydroelectric station Direct Current Power Supervise Control System Download PDFInfo
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- CN204103599U CN204103599U CN201420526941.4U CN201420526941U CN204103599U CN 204103599 U CN204103599 U CN 204103599U CN 201420526941 U CN201420526941 U CN 201420526941U CN 204103599 U CN204103599 U CN 204103599U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/16—Electric power substations
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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
- Y04S10/40—Display of information, e.g. of data or controls
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Layered distribution type hydroelectric station Direct Current Power Supervise Control System, comprises Xian Di Surveillance center, remote monitoring center Two monitor levels pattern, and two inter-stages adopt Modbus stipulations to be communicated by RS485 interface; Xian Di Surveillance center, comprises PLC intelligent monitoring unit, touch-screen, charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage monitors and voltage-adjusting unit, Insulation monitoring unit, switch acquisition unit, Alternating Current Unit, a plurality of charging module, battery pack, voltage dropping silicon chain, the female output unit of conjunction mother control; Touch-screen connects PLC intelligent monitoring unit by RS232 interface.Stability of the present utility model is high, noise is little, control precision is high, with the transformer station RTU device on backstage or power plant computer supervisory control system DCS is connected in RS485 mode, automation more, suitable environment are wide.
Description
[technical field]
The utility model relates to the secondary device in power plant, hydroelectric station and all kinds of transformer station, and concrete one relates to a kind of layered distribution type hydroelectric station Direct Current Power Supervise Control System.
[background technology]
The DC operation power supply system run in China power plant, hydroelectric station and all kinds of transformer station has the obsolete equipment being much still and comparatively falling behind, and there is more defect, has caused many accidents, and caused heavy losses.The reflection of lead acid accumulator to temperature is sensitiveer, requires strict, do not allow to overcharge and charge less to charging device.If still adopt the charging device of outmoded backwardness, for its voltage stabilizing, precision of steady current is low, and ripple coefficient is high, may cause the service life reduction of storage battery even body be split up damage, and whole direct current system is paralysed.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of layered distribution type hydroelectric station Direct Current Power Supervise Control System, and its stability is high, noise is little, control precision is high, with the transformer station RTU device on backstage or power plant computer supervisory control system DCS is connected in RS485 mode, automation more, suitable environment are wide.
The utility model is achieved in that
Layered distribution type hydroelectric station Direct Current Power Supervise Control System, comprises Xian Di Surveillance center, remote monitoring center Two monitor levels pattern, and two inter-stages adopt Modbus stipulations to be communicated by RS485 interface;
Described Xian Di Surveillance center, comprises PLC intelligent monitoring unit, touch-screen, charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage monitors and voltage-adjusting unit, Insulation monitoring unit, switch acquisition unit, Alternating Current Unit, a plurality of charging module, battery pack, voltage dropping silicon chain, the female output unit of conjunction mother control;
Described touch-screen connects described PLC intelligent monitoring unit by RS232 interface;
Described charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage supervision and voltage-adjusting unit, Insulation monitoring unit and switch acquisition unit connect described PLC intelligent monitoring unit respectively by RS485 interface;
Described charging module monitor unit connects described a plurality of charging module; Described ac voltage measurement and duplicate supply switch unit are connected to described Alternating Current Unit; Described battery inspection unit and described battery current and load current measuring unit are connected respectively to described battery pack; Described busbar voltage monitors and voltage-adjusting unit is connected to described voltage dropping silicon chain; Described Insulation monitoring unit and described switch acquisition unit are connected to and close the female output unit of female control.
Further, the female output unit of described conjunction mother control comprises combined floodgate branching unit and controls branching unit.
The utility model has the advantage of: 1, decentralized control, centralized management; 2, flexibility and scalability good; 3, stronger its communication ability; 4, the division of labor of Hierarchical Monitor System each layer is clear and definite, now monitoring unit modularized design, and each unit module has independently CPU, and a module breaks down and do not affect the normal work of other modules, improves reliability, and is convenient to safeguard; 5, layered distribution type system signal processes nearby, and antijamming capability is strong.Designed DC monitoring system is at multiple medium and small-scale water and electricity factory and transformer station's reliability service.
[accompanying drawing explanation]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is management of charging and discharging schematic flow sheet of the present utility model.
[embodiment]
As shown in Figure 1, layered distribution type hydroelectric station Direct Current Power Supervise Control System, comprises Xian Di Surveillance center, remote monitoring center Two monitor levels pattern, and two inter-stages adopt Modbus stipulations to be communicated by RS485 interface;
Described Xian Di Surveillance center, comprises PLC intelligent monitoring unit, touch-screen, charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage monitors and voltage-adjusting unit, Insulation monitoring unit, switch acquisition unit, Alternating Current Unit, a plurality of charging module, battery pack, voltage dropping silicon chain, the female output unit of conjunction mother control;
Described touch-screen connects described PLC intelligent monitoring unit by RS232 interface;
Described charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage supervision and voltage-adjusting unit, Insulation monitoring unit and switch acquisition unit connect described PLC intelligent monitoring unit respectively by RS485 interface;
Described charging module monitor unit connects described a plurality of charging module; Described ac voltage measurement and duplicate supply switch unit are connected to described Alternating Current Unit; Described battery inspection unit and described battery current and load current measuring unit are connected respectively to described battery pack; Described busbar voltage monitors and voltage-adjusting unit is connected to described voltage dropping silicon chain; Described Insulation monitoring unit and described switch acquisition unit are connected to and close the female output unit of female control.
The female output unit of described conjunction mother control comprises combined floodgate branching unit and controls branching unit.
Xian Di Surveillance center, by PLC intelligent monitoring unit, centralized monitor and management are carried out to unit exactly, by RS485 connected mode, read charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage monitors and voltage-adjusting unit, Insulation monitoring unit, switch acquisition unit data, collection site information also carries out data processing and field control.By RS232 communication modes gathering display and control above the data upload of coming up to touch-screen.Xian Di Surveillance center is by PLC intelligent monitoring unit and unit communication thus complete field data collection and field control task.Hardware is divided into polylith distributed module plate by function, each functional module plate all with low cost Strong MCU P89LPC938 for core, this single-chip microcomputer has built-in A/D, Watchdog and EEPROM, simplifies the periphery circuit design of existing ground monitoring module.Different existing ground monitoring modules designs different peripheral interface circuits according to functional requirement, and main peripheral interface circuit has: signal switching modulate circuit, buffer circuit, RS485 communication interface, module's address arrange circuit, alarm output circuit and power circuit etc.
Remote monitoring center, mainly processes and shows the field data that Xian Di Surveillance center uploads up, and assigns by Xian Di Surveillance center the distant place control that instruction realizes direct current system.The monitoring software at remote monitoring center realizes the exchanges data with Xian Di Surveillance center.Mainly complete the management of the out-of-limit value, warning message, switching value, analog quantity etc. of each module, realize distant place controlling functions.Adopt Delphi7.0 to write, database is SQL Server 2000.
Under normal circumstances, while carrying out all/float electricity by charging module to battery pack, power to regular load; When control overhead or living load need greater impact electric current (such as circuit breaker divides/closes a floodgate), jointly powered by battery pack and charhing unit; When factory, institute's electricity consumption are interrupted, powered separately by battery pack.
The data that PLC intelligent monitoring unit is selected to have the many communication interfaces of easily extensible, gathered modules.Be responsible for the setting of the collection to each unit running status and data, display and system unit operational factor, and control the normal operation of each unit.The PLC of high performance-price ratio has the advantages such as extensibility is strong, simplicity of design is flexible, antijamming capability is strong, and compare to industrial computer, without the rotating parts such as hard disk, fan, reliability improves greatly.Grand FBs-10MCTD type PLC is as master controller forever in employing, and PLC main frame carries 1 RS232 interface Port0 for same touch panel communication.Expand 4 RS485 communication interfaces, wherein 2 ports Port1, Port2 adopt added communications template FBs-CB55, and other 2 ports Port3, Port4 adopt and extend out communication module FBs-CM55.Wherein Port1 is used for communicating with each now monitoring module, and Port2 is used for communicating with each charging module, and Port3 is used for and remote monitoring center to center communications.Port4 is reserved communication interface.This PLC program complete the timer internal of PORT0 ~ 3 serial ports initialization and Shi Ji 100ms is opened in have no progeny, circulation perform manage with remote monitoring center to center communications and charging module data processing, warning message, the control to existing ground, the management of charging and discharging to charging module, optimum configurations manages and the subprogram such as touch panel communication, Password Management, communication protocol conversion.Come by 100ms Interruption service routine with the communication of Xian Di Surveillance center modules, often interrupted once completing the communication with existing a module.
Touch-screen, by the communication of RS232 and PLC intelligent monitoring unit, realizes the various information of each unit of display in real time, comprises image data, parameters, alert data etc., convenient ruuning situation of checking whole system at any time.Adopt the MT6056i of WEINVIEW company.All adopt Modbus with the communication protocol of each each module of Xian Di Surveillance center, and the communication protocol of the U.S. Ai Mo adopted raw HD series charging module is that the said firm is self-defining.Therefore, be ensure the reliability of communication, the convenience of real-time and Software for Design, now monitor PLC and adopt 2 different communication interfaces to communicate with Xian Di Surveillance center and charging module respectively.The warning of Xian Di Surveillance center exports and drives relay to realize by the output contact of PLC.
Charging module is made up of N+1 charging module, and charging module adopts world-renowned power supply manufacturer--the high-frequency switching power supply module that Ai Mosheng company of the U.S. produces.Charhing unit is made up of two or more high-frequency switching power supply module, adopts (N+1) redundant fashion parallel combination to power.Under normal operating conditions, charhing unit charges or floating charge to battery pack, simultaneously for regular load provides DC power supply.Finally by RS485 communication, the real time charging data of each charging module are sent to PLC intelligent monitoring unit and carry out several monitoring display.
Charging module monitor unit.Adopt intelligent HF switch charging module, consider safety and stability, by N+1 principle backup charging module.Charging module adopts automatic charge and discharge control mode.By the management of charging and discharging program in Xian Di Surveillance center, control charging module and intelligent management is carried out to accumulator cell charging and discharging.Below for 100Ah/DC220V direct current system (adopting Ai Mosheng company of the U.S. to produce HD Series Intelligent type HF switch charging module and valve controlled sealed lead-acid accumulator group), the realization of its charge and discharge process and software is described.After storage battery initial charge, first the PLC of Xian Di Surveillance center sends the order of adjusting module output voltage to charging module, makes charging module output voltage be float charge voltage 234V, to battery pack constant voltage floating charge electricity, carries out temperature-compensating if desired; All fill condition when reaching: the floating charge time reach 720h or exchange input interruption more than 10min after restore electricity, it is 0.1C10A that PLC first sends the maximum regulating charging module maximum output current order (by arranging charging module current limliting ratio) restriction charging module output current, then the order of adjusting module output voltage is sent, charging module output voltage is made to be even charging voltage 244V, such charging module constant output current maintains 0.1C10A, to battery pack constant current charge; In the process that recharges here, battery pack built-in potential raises gradually, and when battery pack built-in potential is elevated to a certain degree, charging current starts to reduce gradually; Start timing when constant voltage charge electric current is less than setting value (0.01C10A), after timing 3h, proceed to normal floating charge running status; Exchange be greater than 1h break period time, send and control charging module shutdown command and stop charging module running, after this, exchange to send when recovering and control charging module power-on command and start charging module, start all to fill process, all charge to finish and transfer floating charge to.When system installs the property checked electric discharge device or active inversion electric discharge device additional, by touch-screen, the property checked electric discharge is arranged to battery pack.The flow process of auto charge and discharge management as shown in Figure 2.
Ac voltage measurement and duplicate supply switch unit, Alternating Current Unit is for charging is for alternating current input power supplying, usually powered to charhing unit by I road or II road 380VAC AC power, Alternating Current Unit contains lightning protection circuit and voltage matches circuit, when have thunderbolt occur time or charging device can be made from damage when AC supply voltage significantly raises.Send to PLC intelligent monitoring unit to carry out alternating voltage detection by RS485 communication fault-signal and real-time ac voltage simultaneously.And be sent to remote monitoring center, backstage.
Battery inspection unit, read the real-time voltage of battery pack, detection (sampling) loop of every batteries all adopts the Contactless photoelectric switch of import, both overcome and adopted mechanical relay and the life problems that exists, turn avoid colleague producer employing electric resistance partial pressure and sample the accumulated error and accumulative warm drift problem that cause, thus guarantee higher reliability and accuracy of detection, and PLC intelligent monitoring unit is sent to carry out battery status detection by RS485 communication the result detected.Each module can measure the total voltage of 18 joint monomer battery voltages and battery pack altogether, and can carry out overvoltage, undervoltage warning instruction.
Battery current and load current measuring unit are connected in series in battery pack, gather load current, and charging circuit.And by PS485 communication, send to PLC intelligent monitoring unit to carry out real-time monitoring display data.Be responsible for charging (or electric discharge) electric current and the load total current of measuring storage battery, and carry out overcurrent warning.
Busbar voltage monitors and voltage-adjusting unit measures closing bus bar voltage, control bus voltage.By changing the break-make being serially connected in silicon chain between closing bus bar and control bus, the voltage that adjustment control bus exports.Gather and input closes female, controlling voltage also carries out pressure value multilevel iudge and regulates, because the all/float piezoelectric voltage of batteries usually can higher than control bus voltage range, thus need to adopt Voltage Cortrol to carry out pressure regulation, general employing multistage silicon chain Voltage Cortrol, it has automatic/hand two kinds of voltage regulating modes, during normal operation, change over switch is placed in automated location, device is in automatic Regulation state, at this moment regulator real-time measure and control busbar voltage, and compare with set point, according to comparative result, control the input progression of silicon chain, ensure the voltage regulation limits of control bus.When device is in manual voltage regulation state, be in different positions by change over switch, make to perform accordingly relay adhesive or disjunction reaches the object dropping into or excise silicon chain at different levels, thus ensure that the voltage regulation limits of control bus.The data of real-time voltage value and silicon chain are dropped into grade sends to PLC intelligent monitoring unit to carry out closing real-time monitoring and the display of female voltage controlling voltage by RS485 simultaneously.
Insulation monitoring unit, the voltage to earth of Real-Time Monitoring positive and negative busbar when system is normally run, occurring to send alarm signal when bus insulation declines, lighting trouble light, and sending monitoring module by Reflector, start low frequency signal simultaneously and invest each branch road.Finally send to PLC intelligent monitoring unit gathering the data of coming up by RS485, PLC intelligent monitoring unit carries out overall display and control, when bus insulation declines, starts buzzing and reports to the police.Realize supervision bus insulation situation and branch insulation situation, produce the functions such as warning information.
Switch acquisition unit, Real-Time Monitoring closes the on off state of the female output unit of female control, this unit be closing bus bar and control bus to the detection in the loop that subordinate load is powered, and by RS485, on-off state is sent to PLC intelligent monitoring unit.Can gather the state of 32 way switch altogether, main detection closing bus bar feeder switch, control bus feeder switch, fuse, batteries exchange the state of input contactor with bus connecting valve, external equipment switch and two-way.
(110VDC/220VDC) is required according to different electric pressures, batteries is composed in series by several cells, as the part that direct current system is important, under normal operating condition, charhing unit carries out floating charge to batteries, and regularly all fill, when factory, institute's electricity consumption are interrupted, DC power supply is provided by batteries.
The utility model designed reliability is high; be mainly used in power plant, hydroelectric station and all kinds of transformer station and user becomes in 100AH (DC220V system) or 200AH (DC110 system), for circuit breaker divides, to close a floodgate and instrument in secondary circuit, instrument, relaying protection and emergency lighting provide DC power supply.The utility model is one of indispensable secondary device in power plant, hydroelectric station and all kinds of transformer station, and its reliability directly affects the safe and reliable operation of power plant and substation equipment.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present utility model.
Claims (2)
1. layered distribution type hydroelectric station Direct Current Power Supervise Control System, is characterized in that: comprise Xian Di Surveillance center, remote monitoring center Two monitor levels pattern, and two inter-stages adopt Modbus stipulations to be communicated by RS485 interface;
Described Xian Di Surveillance center, comprises PLC intelligent monitoring unit, touch-screen, charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage monitors and voltage-adjusting unit, Insulation monitoring unit, switch acquisition unit, Alternating Current Unit, a plurality of charging module, battery pack, voltage dropping silicon chain, the female output unit of conjunction mother control;
Described touch-screen connects described PLC intelligent monitoring unit by RS232 interface;
Described charging module monitor unit, ac voltage measurement and duplicate supply switch unit, battery inspection unit, battery current and load current measuring unit, busbar voltage supervision and voltage-adjusting unit, Insulation monitoring unit and switch acquisition unit connect described PLC intelligent monitoring unit respectively by RS485 interface;
Described charging module monitor unit connects described a plurality of charging module; Described ac voltage measurement and duplicate supply switch unit are connected to described Alternating Current Unit; Described battery inspection unit and described battery current and load current measuring unit are connected respectively to described battery pack; Described busbar voltage monitors and voltage-adjusting unit is connected to described voltage dropping silicon chain; Described Insulation monitoring unit and described switch acquisition unit are connected to and close the female output unit of female control.
2. layered distribution type hydroelectric station as claimed in claim 1 Direct Current Power Supervise Control System, is characterized in that: the female output unit of described conjunction mother control comprises combined floodgate branching unit and controls branching unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420526941.4U CN204103599U (en) | 2014-09-15 | 2014-09-15 | Layered distribution type hydroelectric station Direct Current Power Supervise Control System |
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| CN201420526941.4U CN204103599U (en) | 2014-09-15 | 2014-09-15 | Layered distribution type hydroelectric station Direct Current Power Supervise Control System |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005252A (en) * | 2015-06-05 | 2015-10-28 | 哈尔滨新世通电器有限公司 | Intelligent power generation monitoring method and system for hydropower station |
| CN105680559A (en) * | 2016-04-06 | 2016-06-15 | 国家电网公司 | Substation DC system |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
-
2014
- 2014-09-15 CN CN201420526941.4U patent/CN204103599U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005252A (en) * | 2015-06-05 | 2015-10-28 | 哈尔滨新世通电器有限公司 | Intelligent power generation monitoring method and system for hydropower station |
| CN105005252B (en) * | 2015-06-05 | 2017-10-27 | 哈尔滨新世通电器有限公司 | A kind of power station intelligent power generation monitoring method and system |
| CN105680559A (en) * | 2016-04-06 | 2016-06-15 | 国家电网公司 | Substation DC system |
| CN106549501A (en) * | 2016-12-09 | 2017-03-29 | 国网安徽省电力公司池州供电公司 | For the intelligent management monitoring unit and transformer substation communication power-supply system of communication power supply |
| CN106549501B (en) * | 2016-12-09 | 2023-05-16 | 国网安徽省电力公司池州供电公司 | Intelligent management monitoring unit for communication power supply and transformer substation communication power supply system |
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