CN205383041U - Low pressure packaged unit device - Google Patents
Low pressure packaged unit device Download PDFInfo
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- CN205383041U CN205383041U CN201620168280.1U CN201620168280U CN205383041U CN 205383041 U CN205383041 U CN 205383041U CN 201620168280 U CN201620168280 U CN 201620168280U CN 205383041 U CN205383041 U CN 205383041U
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- control device
- low pressure
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- self
- supervisory equipment
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model relates to a low pressure packaged unit device, including the hydraulic turbine, generator, speed regulator, exciting arrangement, protection measurement and control device, excitation transformer, load box and controlling means, the hydraulic turbine, exciting arrangement and protection measurement and control device's input is connected to the generator, and the speed regulator is connected to the hydraulic turbine, excitation transformer and load box are connected to protection measurement and control device's output to be used for connecting the power output end, protect measurement and control device's sampling end connection control device, controlling means connects speed regulator, exciting arrangement, excitation transformer and load box. Can avoid mechanical energy to trun into the hysteresis of electric energy to when starting shooting and shutting down the operation to through the various operating modes of the lonely net of electron load adjustment and response, but the power frequency of the lonely net of fast and stable has improved the electric energy quality, satisfies the demand of user's power consumption and the quality of electric energy.
Description
Technical field
This utility model is involved in electromotor isolated power grid equipment technical field, particularly relates to a kind of self-contained set of low pressure.
Background technology
When electric power network technique is maked rapid progress, some remote sites elevated lines are from grid power transmission, costly, even this local construction elevated line technical difficulty is high, there is risk, but the water resource in this place is enriched, therefore available local water resource carries out hydraulic turbine generating, utilize electronic load regulating frequency, resident living power utility quality near solving.
Traditional hydraulic turbine electric generator system is formed by the hydraulic turbine and generator combination, and in unit, the hydraulic turbine is as prime mover, utilizes the energy operation of water, drives electrical power generators.Delayed owing to existing when mechanical energy being transferred to electric energy, and employing hydraulic turbine electrohydaulic speed governor system carries out speed governing and equally exists mechanical hysteresis characteristic, the dynamic response characteristic of isolated power grid and the balance of electromotor three-phase current cannot be met, causing that the power frequency of lonely net is unstable, there is the shortcoming that the quality of power supply is low in traditional hydraulic turbine electric generator system.
Utility model content
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of self-contained set of low pressure improving the quality of power supply.
A kind of self-contained set of low pressure, including the hydraulic turbine, electromotor, speed regulator, excitation unit, protection supervisory equipment, exciting transformer, load box and control device, described protection supervisory equipment is provided with input, outfan and sampling end,
Described electromotor connects the input of the described hydraulic turbine, described excitation unit and described protection supervisory equipment, and the described hydraulic turbine connects described speed regulator；The outfan of described protection supervisory equipment connects described exciting transformer and described load box, and is used for connecting power output end, and the sampling end of described protection supervisory equipment connects described control device；Described control device connects described speed regulator, described excitation unit, described exciting transformer and described load box；
Described control device receives start-up command, controls described speed regulator and the stator of the described hydraulic turbine reaches fully open position, and receive halt instruction, control described speed regulator and the stator of the described hydraulic turbine is reached closed positions；Described protection supervisory equipment obtains the frequency of electromotor and sends to described control device, and described control device controls described excitation unit and described load box.
The self-contained set of above-mentioned low pressure, controls device after receiving start-up command, controls speed regulator and the stator of the hydraulic turbine is reached fully open position.In convincing leaf process by patient analysis, control device and automatically engage excitation function and electronics Load Regulation when the frequency of electromotor reaches to put into threshold value, it is achieved Auto Power On process.Control device after receiving halt instruction, control speed regulator and the stator of the hydraulic turbine is reached closed positions.In closing stator process, control the device frequency at electromotor lower than automatically exiting from excitation function and electronics Load Regulation when exiting threshold value, it is achieved autostop process.Fully open position and closed positions is only had due to gate positing; shut down complete closing; start standard-sized sheet; mechanical energy can be avoided the delayed of electric energy is transferred to when booting up with power-off operation; and by the various operating modes of electronics load governing response orphan net; can fast and stable orphan net power frequency, improve the quality of power supply, meet the demand of user power utilization and the quality of electric energy.
Accompanying drawing explanation
Fig. 1 is the structure chart of a self-contained set of embodiment mesolow；
Fig. 2 is the schematic diagram of a self-contained set of embodiment mesolow；
Fig. 3 is the schematic diagram of load control device in an embodiment.
Detailed description of the invention
A kind of self-contained set of low pressure, it is adaptable to the low-tension unit isolated power grid of 10-400KW capacity, generally not grid-connected with electrical network, save the cost of overhead transmission line, be only used for meeting the household electricity of resident.As shown in Figure 1; said apparatus includes the hydraulic turbine 110, electromotor 120, speed regulator 130, excitation unit 140, protection supervisory equipment 150, exciting transformer 160, load box 170 and controls device 180, and protection supervisory equipment 150 is provided with input, outfan and sampling end.
Electromotor 120 connects the input of the hydraulic turbine 110, excitation unit 140 and protection supervisory equipment 150, and the hydraulic turbine 110 connects speed regulator 130；The outfan of protection supervisory equipment 150 connects exciting transformer 160 and load box 170, and is used for connecting power output end, and the sampling end of protection supervisory equipment 150 connects control device 180；Control device 180 and connect speed regulator 130, excitation unit 140, exciting transformer 160 and load box 170.
Control device 180 and receive start-up command, control speed regulator 130 and the stator of the hydraulic turbine 110 is reached fully open position, and receive halt instruction, control speed regulator 130 and the stator of the hydraulic turbine 110 is reached closed positions；Protection supervisory equipment 150 obtains the frequency of electromotor 120 and sends to controlling device 180, controls device 180 and controls the input of excitation unit 140 and load box 170 and exit.
Specifically, control device 180 after receiving start-up command, control to stop convincing leaf by patient analysis after the stator of the hydraulic turbine 110 is reached fully open position by speed regulator 130.In convincing leaf process by patient analysis, protection supervisory equipment 150 obtains the frequency of electromotor 120 in real time and sends to controlling device 180.Control device 180 control excitation unit 140 and load box 170 when the frequency of electromotor 120 reaches to put into threshold value to put into, automatically engage excitation function and electronics Load Regulation realizes Auto Power On process.
After exciting transformer 160 carries out blood pressure lowering for the voltage that the outfan of protection supervisory equipment 150 is exported, output extremely controls device 180; controlling device 180 utilizes the voltage that exciting transformer 160 exports to provide three-phase AC excitation power supply for excitation unit 140, thus the device 140 that puts into excitation provides operating fields for electromotor 120.Excitation unit 140 specifically has brush excitation mode and brushless excitation mode two kinds, and in the present embodiment, excitation unit 140 is the excitation unit having brush excitation mode, and electric hysteresis characteristic is little, and the response time is short, can improve the response speed of excitation system.
Control device 180 after receiving halt instruction, control to stop closing stator after the stator of the hydraulic turbine 110 is reached closed positions by speed regulator 130.In closing stator process, protection supervisory equipment 150 is from the frequency of motion tracking electromotor 120.Control device 180 and exit lower than control excitation unit 140 and load box 170 when exiting threshold value in the frequency of electromotor 120, automatically exit from excitation function and electronics Load Regulation realizes autostop process.The concrete value putting into threshold value and exit threshold value can according to practical situation adjustment, and putting into threshold value in the present embodiment is 45HZ, and exiting threshold value is 40HZ.Control device 180 control the input of load box 170 and exit, specifically can be by input step by step and exit control.
It should be noted that, control device 180 to boot up and power-off operation according to the instruction received, and control the input of excitation unit 140 and load box 170 and exit the technology that all can adopt comparative maturity, namely control device 180 and can adopt product common on the market, it is not necessary to paying creative work can realize.
Wherein in an embodiment, control device 180 and include connecting the controller of the sampling end of speed regulator 130, excitation unit 140, exciting transformer 160, load box 170 and protection supervisory equipment 150.The present embodiment middle controller is HZA100 controller, and the different instruction according to receiving boots up and shuts down, and controls the input of excitation unit 140 and load box 170 and exit.Further, control device 180 and also include connecting the unit integrated screen of controller, be used for carrying out man-machine interaction, improve operation ease.
Wherein in an embodiment, concrete as in figure 2 it is shown, load box 170 includes load control device 172 and water-cooling resistor box 174, load control device 172 connects the outfan of protection supervisory equipment 150, controls device 180 and water-cooling resistor box 174.After controlling device 180 execution input load box 170 operation, regulate water-cooling resistor box 174 by controlling load control device 172, so that the frequency stable of electromotor 120.
In the present embodiment, load control device 172 is built-in controllable silicon (SiliconControlledRectifier, SCR) load control device, concrete schematic diagram is as shown in Figure 3, it is possible to the frequency stable quickly met in extraneous different loads situation controls, and meets the requirement of power consumer.The configuration depending on load has been stablized due to frequency, can pass through to regulate silicon controlled pilot angle with stability contorting frequency, ensureing the balance exerted oneself with electronics load and customer charge thereof of electromotor 120, thus stablizing frequency near 50HZ or 60HZ, concrete scope is adjustable.Additionally, control the voltage that device 180 also can gather the outfan of protection supervisory equipment 150, in order to the output voltage of electromotor 120 is monitored.
In the present embodiment, load control device 172 is the device with frequency stable function, regulates water-cooling resistor box 174 to control the frequency stable of electromotor 120, improve for electrical stability and the quality of power supply after input.
Wherein in an embodiment, load control device 172 still possesses the device of three-phase balance function.Imbalance when user's threephase load runs, it is necessary to water-cooling resistor box 174 configures the three-phase balance of electromotor 120.By controlling the pilot angle of three-phase controllable silicon in load control device 172, it is ensured that the three-phase balance of electromotor 120 stator current.Such as when user's A phase current increases, then the A phase current of electronics load reduces, it is ensured that electromotor 120 is under any operating mode, and ABC three-phase current is equal.User can conveniently use three-phase electric apparatus equipment and single-phase electric appliance equipment simultaneously, makes the long-time operation under security situation of electromotor 120.Carry out three-phase balance control by load control device 172, the quality of power supply can be improved equally, also can improve the suitability of the self-contained set of low pressure.
Wherein in an embodiment, load control device 172 can also be the device with harmonic management function, controls the discharge and recharge of water-cooling resistor box 174 electric capacity according to reality operating mode in real time, reduces the negative-sequence current of zero-sequence current and electromotor, greatly reduce harmonic wave, improve the quality of power supply.Additionally, load box 170 may also include the load control panel connecting load control device 172, it is used for carrying out man-machine interaction, improves operation ease.
Wherein in an embodiment, with continued reference to Fig. 2, the self-contained set of low pressure may also include closing device QF, and the outfan of protection supervisory equipment 150 connects power output end by closing device QF.In the present embodiment, power output end connects 400V outlet, and the 400V voltage of electromotor 120 output is delivered to 400V outlet through protection supervisory equipment 150 and closing device QF.Control electric energy output by closing device QF, can cut off in time when power supply trouble occurs, improve operation ease and safety.Further, closing device QF is chopper, and breaking current ability is strong, arc overvoltage when also can avoid occurring line switching and damage equipment, improve processing safety and reliability.
The self-contained set of above-mentioned low pressure; fully open position and closed positions is only had due to gate positing; shut down complete closing; start standard-sized sheet; mechanical energy can be avoided to transfer the delayed of electric energy to when booting up with power-off operation, and by the various operating modes of electronics load governing response orphan net, can the power frequency of fast and stable orphan net; improve the quality of power supply, meet the demand of user power utilization and the quality of electric energy.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (9)
1. the self-contained set of low pressure; it is characterized in that; including the hydraulic turbine, electromotor, speed regulator, excitation unit, protection supervisory equipment, exciting transformer, load box and control device, described protection supervisory equipment is provided with input, outfan and sampling end
Described electromotor connects the input of the described hydraulic turbine, described excitation unit and described protection supervisory equipment, and the described hydraulic turbine connects described speed regulator；The outfan of described protection supervisory equipment connects described exciting transformer and described load box, and is used for connecting power output end, and the sampling end of described protection supervisory equipment connects described control device；Described control device connects described speed regulator, described excitation unit, described exciting transformer and described load box；
Described control device receives start-up command, controls described speed regulator and the stator of the described hydraulic turbine reaches fully open position, and receive halt instruction, control described speed regulator and the stator of the described hydraulic turbine is reached closed positions；Described protection supervisory equipment obtains the frequency of electromotor and sends to described control device, and described control device controls described excitation unit and described load box.
2. the self-contained set of low pressure according to claim 1, it is characterised in that described control device includes the controller connecting the sampling end of described speed regulator, described excitation unit, described exciting transformer, described load box and described protection supervisory equipment.
3. the self-contained set of low pressure according to claim 2, it is characterised in that described control device also includes the unit integrated screen connecting described controller.
4. the self-contained set of low pressure according to claim 1, it is characterised in that described excitation unit is the excitation unit having brush excitation mode.
5. the self-contained set of low pressure according to claim 1; it is characterized in that; described load box includes load control device and water-cooling resistor box, and described load control device connects the outfan of described protection supervisory equipment, described control device and described water-cooling resistor box.
6. the self-contained set of low pressure according to claim 5, it is characterised in that described load control device is the load control device of built-in controllable silicon.
7. the self-contained set of low pressure according to claim 5, it is characterised in that described load box includes the load control panel connecting described load control device.
8. the self-contained set of low pressure according to claim 1, it is characterised in that also include closing device, the outfan of described protection supervisory equipment connects described power output end by described closing device.
9. the self-contained set of low pressure according to claim 8, it is characterised in that described closing device is chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168280.1U CN205383041U (en) | 2016-03-04 | 2016-03-04 | Low pressure packaged unit device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168280.1U CN205383041U (en) | 2016-03-04 | 2016-03-04 | Low pressure packaged unit device |
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| CN205383041U true CN205383041U (en) | 2016-07-13 |
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| CN201620168280.1U Active CN205383041U (en) | 2016-03-04 | 2016-03-04 | Low pressure packaged unit device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575338A (en) * | 2017-08-31 | 2018-01-12 | 福建省力得自动化设备有限公司 | The two-way dual disaster tolerance control system of turbine-generator units and its method |
| CN108443047A (en) * | 2018-02-05 | 2018-08-24 | 深圳市奈士迪技术研发有限公司 | It is a kind of that there is anti-blocking and speed-regulating function water generating equipment |
-
2016
- 2016-03-04 CN CN201620168280.1U patent/CN205383041U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575338A (en) * | 2017-08-31 | 2018-01-12 | 福建省力得自动化设备有限公司 | The two-way dual disaster tolerance control system of turbine-generator units and its method |
| CN107575338B (en) * | 2017-08-31 | 2019-06-14 | 福建省力得自动化设备有限公司 | The two-way dual disaster tolerance control system of turbine-generator units and its method |
| CN108443047A (en) * | 2018-02-05 | 2018-08-24 | 深圳市奈士迪技术研发有限公司 | It is a kind of that there is anti-blocking and speed-regulating function water generating equipment |
| CN108443047B (en) * | 2018-02-05 | 2020-01-14 | 海南省水利水电勘测设计研究院 | Hydroelectric power generation equipment with prevent stifled and speed governing function |
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