CN204168194U - The universal local control unit of small hydro turbine group - Google Patents
The universal local control unit of small hydro turbine group Download PDFInfo
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- CN204168194U CN204168194U CN201420528892.8U CN201420528892U CN204168194U CN 204168194 U CN204168194 U CN 204168194U CN 201420528892 U CN201420528892 U CN 201420528892U CN 204168194 U CN204168194 U CN 204168194U
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Abstract
The universal local control unit of small hydro turbine group, comprise cabinet, and be arranged on ac electric intelligent acquisition equipment in cabinet, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant, PLC; Described PLC comprises communication module, temperature collect module, programmable A PCI interface, programmable I/O interface; Described ac electric intelligent acquisition equipment, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant be all connected to PLC.The utility model uses PLC as core control part, and obtains data by mapping table and interface routine and outside physical cabling communication.When LCU debugs at the scene, generally carry out the amendment of PLC flow process without the need to automatic programming personnel, but carried out arranging in man-machine interface by general engineering technology personnel.
Description
[technical field]
The utility model relates to a kind of local control unit (hereinafter referred to as LCU) of turbine-generator units, particularly a kind of universal LCU being applied to the Highgrade integration of small hydro turbine group.
[background technology]
In the complex automatic system in hydroelectric station, LCU be turbine-generator units and auxiliary equipment thereof monitored, control, the core component of data communication.By the LCU of present mainstay thinking, need engineers and technicians according to the difference of each power station concrete condition, carry out opening into, output, mould enters, of ac, Temperature Quantity gather design, again according to the difference of these external variables, carry out the Custom Design of coiling cabinet, publish picture, dish cabinet is installed, and then is carried out custom-written and the field adjustable of PLC (programmable logic controller (PLC)) program by the programming personnel possessing suitable technical merit.In follow-up operation, if some measuring points of input and output module break down, the general mode changing whole module that adopts carries out troubleshooting.
In existing power station synthetical automation design, the general mode adopting a specific function group one screen cabinet, as: microcomputer excitation cabinet, microcomputer governor cabinet, temperature-measuring braking screen, automation local control cabinet, the same period shield etc.These devices respectively execute its duty, and gather the signal required for oneself separately, draw oneself up responsible equipment.In large medium-size station, because Personnel Skill Levels is higher, in-site installation position is also well-to-do, and above structure there is no significant problem.But at small hydropower station, the technical merit of field technician is corresponding limited, and fabricating yard is narrow and small, this just needs a kind of Highgrade integration, unitized novel local control unit to realize the monitoring of on-site generated power unit.
Existing LCU design, because the equipment situation in each power station is all different, must carry out Custom Design, and install until site operation program debugging from design, dish cabinet of publishing picture, the technical staff needing suitable professional standards higher participates in.Construction cycle is long, and engineering efficiency is lower, and the technical merit for personnel requires higher.
[summary of the invention]
Technical problem to be solved in the utility model is the universal LCU of small hydro turbine group providing a kind of Highgrade integration.
The utility model is achieved in that
The universal local control unit of small hydro turbine group, comprise cabinet, and be arranged on ac electric intelligent acquisition equipment in cabinet, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant, PLC;
Described PLC comprises communication module, temperature collect module, programmable A PCI interface, programmable I/O interface;
Described ac electric intelligent acquisition equipment, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant be all connected to PLC.
Further, be also provided with DC motor speed-regulating device control module in described cabinet, this DC motor speed-regulating device control module is connected to described PLC.
The utility model has the advantage of: the utility model is using PLC as on the basis of core control part, add the concept of " mapping ", the equipment automatically controlled included in by all needs that internally may exist in (PLC inner) exhaustive small hydropower station, and obtain data by mapping table and interface routine and outside physical cabling communication.To be the theme design philosophy with this concept, to produce universal LCU.When LCU debugs at the scene, generally carry out the amendment of PLC flow process without the need to automatic programming personnel, but carried out arranging in man-machine interface by general engineering technology personnel.
[accompanying drawing explanation]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model structured flowchart.
Fig. 2 is programmable I/O in the utility model (AI) interface diagram.
[embodiment]
As shown in Figure 1, the universal local control unit of small hydro turbine group, comprise cabinet, and be arranged on ac electric intelligent acquisition equipment in cabinet, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant, PLC;
Described PLC comprises communication module, temperature collect module, programmable A PCI interface, programmable I/O interface;
Described ac electric intelligent acquisition equipment, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant be all connected to PLC.
Also be provided with DC motor speed-regulating device control module in described cabinet, this DC motor speed-regulating device control module is connected to described PLC.
Ac electric intelligent acquisition equipment gathers generator alternating current amount, as: the data such as voltage, electric current, power, give PLC by RS485 serial ports.
Microcomputer excitation rotating speed measure and control device controls excitation system, takes into account the measurement of generating unit speed, gives PLC by 485 serial ports.And by IO bus, realize excitation, demagnetization, the signals such as control of overrunning are mutual.
The same period, protective device realized the grid-connected of unit and the defencive function required for the small hydro turbine such as overcurrent, overvoltage group.
DC motor speed-regulating device control module (apolegamy): for the unit not configuring the driving speed regulator of traditional oil pressure can also be its configuring direct current machine governor control module, therefore integrated DC motor control module in LCU.
Storage battery adopts 24V electric pressure, when externally fed fault, is powered to whole LCU cabinet by storage battery.
Battery charging plant, it is input as station service 220V and exchanges, and exports as 24V direct current.Can be storage battery time normal and charge power supply is provided, and whole LCU cabinet is powered.
Battery detection module, detects battery tension, and gives PLC by 485 serial ports.
Programmable Logic Controller (PLC): be the control core of LCU cabinet, its inside is prefixed all kinds of flow processs such as generator startup-shutdown, then by realizing to generator monitoring with external smart equipment and each IO, AI.Meanwhile, it also provides data to touch-screen, realizes man-machine interface; There is provided an Ethernet interface, to realize ipc monitor or remote monitoring.It is a built-in programmable I/O interface also, realizes the mapping of external cabling and internal virtual IO measuring point, thus realizes generalization.
Above with the smart machine that 485 buses are communication media, whole employing standard ModBus stipulations.
Plc communication module adopts a road ethernet module, road GPRS (CDMA) module.Proper communication, can adopt fiber optic Ethernet, and GPRS (CDMA) module is then for alternate channel.Constitute one outbound data passage highly reliably.
The utility model is using PLC as on the basis of core control part, add the concept of " mapping ", the equipment automatically controlled included in by all needs that internally may exist in (PLC inner) exhaustive small hydropower station, and obtain data by mapping table and interface routine and outside physical cabling communication.As shown in Figure 2.
Table 1:
Table 1 is mapping table segment, its principle is explained as follows: for " 1# inlet gate standard-sized sheet ", it is wired to PLC and opens X0 point into module, and in PLC inside, this point is fixed on the 4th point of inner sequence number, namely so opening the 4th relevant position into mapping table, its content is being 0, and it actually opens into being X0 meaning.Map Interface program according to this mapping table, namely know the measured value of X0 invested internal virtual open into middle sequence number be 4 point.
Open "-1 " in mapping row, represent that this point does not use in current plant engineering.
The inner title of PLC and sequence number, reserve in advance, it enumerates the input and output point that all small power stations may occur.Because PLC internal register is abundant, so it can exhaustive all input and outputs that may occur in actual applications, and the screen cabinet external cabling of reality is necessarily limited, so only connect the input and output of needs at the scene, and then it is inner by Map Interface program, they to be mapped to PLC program.For PLC internal processes, its external cabling is " transparent ".Like this, then coordinate with corresponding as range, the formulation datas such as flow process relevant configuration, PLC internal processes can be accomplished general.
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. the universal local control unit of small hydro turbine group, it is characterized in that: comprise cabinet, and be arranged on ac electric intelligent acquisition equipment in cabinet, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant, PLC;
Described PLC comprises communication module, temperature collect module, programmable A PCI interface, programmable I/O interface;
Described ac electric intelligent acquisition equipment, microcomputer excitation rotating speed measure and control device, the same period protective device, battery detection module, touch-screen, storage battery, battery charging plant be all connected to PLC.
2. the universal local control unit of small hydro turbine group as claimed in claim 1, it is characterized in that: be also provided with DC motor speed-regulating device control module in described cabinet, this DC motor speed-regulating device control module is connected to described PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528892.8U CN204168194U (en) | 2014-09-15 | 2014-09-15 | The universal local control unit of small hydro turbine group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528892.8U CN204168194U (en) | 2014-09-15 | 2014-09-15 | The universal local control unit of small hydro turbine group |
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| CN204168194U true CN204168194U (en) | 2015-02-18 |
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| CN201420528892.8U Active CN204168194U (en) | 2014-09-15 | 2014-09-15 | The universal local control unit of small hydro turbine group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111459213A (en) * | 2020-03-18 | 2020-07-28 | 浙江江山博奥电气有限公司 | Automatic intelligent control switch cabinet of hydropower station |
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2014
- 2014-09-15 CN CN201420528892.8U patent/CN204168194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111459213A (en) * | 2020-03-18 | 2020-07-28 | 浙江江山博奥电气有限公司 | Automatic intelligent control switch cabinet of hydropower station |
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