CN105375784A - Power output control system - Google Patents
Power output control system Download PDFInfo
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- CN105375784A CN105375784A CN201510902726.9A CN201510902726A CN105375784A CN 105375784 A CN105375784 A CN 105375784A CN 201510902726 A CN201510902726 A CN 201510902726A CN 105375784 A CN105375784 A CN 105375784A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention provides a power output control system, which comprises a power sub-system, an operation sub-system, a control sub-system and a display sub-system, wherein the power sub-system, the operation sub-system and the display sub-system are connected with the control sub-system respectively; the power sub-system comprises an output unit; the voltage output by the output unit is provided with N voltage ranges within an interval from 380V to 11kV; N is an integer greater than or equal to 2; the operation sub-system is provided with N switches which are used for setting the output voltage ranges; the switches correspond to the voltage ranges one by one; after one switch is closed, the other switches are locked and cannot be closed; the control sub-system is used for controlling opening/closing and locking of the switches; an actually output voltage value of the output unit is controlled according to the appointed voltage ranges; and the display sub-system is controlled to display the output voltage value. The power output control system not only can have the voltage output effects of multiple ranges, but also has protecting, interlocking, alarming and displaying functions, and is stable and reliable.
Description
Technical field
The present invention relates to electronic measurement and control technical field, particularly relating to a kind of power supply output control system for controlling power supply output variable.
Background technology
Air conditioner testboard power supply is for tested compressor unit provides test power, for the compressor of Start-up and operating performance assigned voltage and capacity.Due to different compressors, require that the voltage of input is not quite similar, for the compressor that means suitable input voltage is higher, be difficult to find applicable power supply.
Summary of the invention
The object of the present invention is to provide one can export multiple gear voltage, and the power supply output control system of function-stable.
To achieve these goals, a kind of power supply output control system of the present invention, comprises power subsystem, operational subsystems, control subsystem and display subsystem;
Power subsystem, operational subsystems, display subsystem are connected with control subsystem respectively;
Power subsystem comprises output unit; The voltage that output unit exports is provided with N number of voltage gear in the interval of 380V to 11KV; N be more than or equal to 2 integer;
Operational subsystems is provided with N number of switch for setting output voltage shelves; Switch and voltage gear one_to_one corresponding; After one of them switch is closed, rest switch is all locked, cannot close;
Control subsystem is used for:
Opening/closing and the locking of control switch;
The magnitude of voltage of the actual output of output unit is controlled according to the voltage gear of specifying;
Control display subsystem and demonstrate output voltage values.
As preferably, output unit is provided with 13 voltage gears;
The output voltage of 13 voltage gear difference corresponding 380V, 400V, 415V, 460V, 575V, 600V, 3KV, 3.3KV, 4160V, 6KV, 6.6KV, 10KV and 11KV.
As preferably, the static precision of voltage regulation of output voltage is ± 2%.
As preferably, operational subsystems comprises and is positioned at near-end operating assembly and far-end operation assembly; Near-end operating assembly interlocks connection mutually with far-end operation assembly.
As preferably, power subsystem comprises high voltage load cabinet, Loading voltage regulator, the first high-voltage board, the second high-voltage board, third high pressure cabinet, the 4th high-voltage board, the 5th high-voltage board, the 6th high-voltage board, the 7th high-voltage board, the 8th high-voltage board, the first dry-type transformer, the second dry-type transformer, 10KV starts cabinet, middle pressure starts cabinet, the first low-voltage cabinet, the second low-voltage cabinet, low voltage starting cabinet;
The input of high voltage load cabinet connects power input, and output is connected with the input of Loading voltage regulator; The output of Loading voltage regulator presses the input of cabinet to be connected with the first high-voltage board, the second high-voltage board, third high respectively, the output of the first high-voltage board is connected with the input of the first dry-type transformer, the boosting output of the first dry-type transformer is connected with the input of the 4th high-voltage board, and the input that output and the 10KV of the 4th high-voltage board start cabinet is connected; The output that 10KV starts cabinet is connected with outside Devices to test; The step-down end of the first dry-type transformer is connected with the input of the 5th high-voltage board, and the output of the second high-voltage board is connected with the input of the 6th high-voltage board; The input of the 7th high-voltage board is connected with the input of the 8th high-voltage board, the input that middle pressure starts cabinet is connected with the output of the 5th high-voltage board, the 6th high-voltage board, the 7th high-voltage board respectively, and the output of the 8th high-voltage board is connected with outside Devices to test respectively with the middle output starting cabinet of pressing; The output of third high pressure cabinet is connected with the input of the second dry-type transformer, the output of the second dry-type transformer is connected with the input of the first low-voltage cabinet, first output of the first low-voltage cabinet is connected with the input of low voltage starting cabinet, and the output of low voltage starting cabinet is connected with outside Devices to test; Second output of the first low-voltage cabinet is connected with the input of the second low-voltage cabinet, and the output of the second low-voltage cabinet is connected with outside Devices to test.
As preferably, the alternating voltage of the input input 6KV of the first dry-type transformer; Boost terminal exports the alternating voltage of 10KV, and step-down end exports the alternating voltage of 3KV.
As preferably, the alternating voltage between the input input 2KV to 6KV of the second dry-type transformer, output exports the alternating voltage of 490V.
As preferably, control subsystem comprises control subsystem power supply; Control subsystem power supply comprises AC transformer, filter, AC-DC converter;
The input of AC transformer is connected with civil power, and output is connected with power input with the signal input part of filter; The signal output part of filter is connected with the input of AC-DC converter, and the output of AC-DC converter provides DC power supply for external equipment.
Power supply output control system provided by the invention; the voltage output effect of multiple gear can not only be had; also possess protection, interlocking, warning, Presentation Function, each control cubicle being whole system by the use of the setting in centralized control cabinet and touch-screen provides corresponding high, medium and low power supply.Practical application shows, system cloud gray model is reliable, stable operation, meets the requirements of the customers, has feasibility.
Accompanying drawing explanation
Fig. 1 is the major loop schematic diagram of power-supply system in one embodiment of the invention.
Fig. 2 is the major loop schematic diagram of centralized control cabinet in one embodiment of the invention.
Fig. 3 is emergent stopping program diagram in one embodiment of the invention.
Fig. 4 is chain control program figure in one embodiment of the invention.
Fig. 5 is analog quantity handling procedure figure in one embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.
For solving the problems of the technologies described above, the first execution mode of the present invention provides a kind of power supply output control system, comprises power subsystem, operational subsystems, control subsystem and display subsystem;
Power subsystem, operational subsystems, display subsystem are connected with control subsystem respectively;
Power subsystem comprises output unit; The voltage that output unit exports is provided with N number of voltage gear in the interval of 380V to 11KV; N be more than or equal to 2 integer;
Operational subsystems is provided with N number of switch for setting output voltage shelves; Switch and voltage gear one_to_one corresponding; After one of them switch is closed, rest switch is all locked, cannot close;
Control subsystem is used for:
Opening/closing and the locking of control switch;
The magnitude of voltage of the actual output of output unit is controlled according to the voltage gear of specifying;
Control display subsystem and demonstrate output voltage values.
In the present embodiment, as shown in Figure 1, the input of high voltage load cabinet connects power input to the circuit diagram of power subsystem, and output is connected with the input of Loading voltage regulator; The output of Loading voltage regulator presses the input of cabinet to be connected with the first high-voltage board, the second high-voltage board, third high respectively, the output of the first high-voltage board is connected with the input of the first dry-type transformer, the boosting output of the first dry-type transformer is connected with the input of the 4th high-voltage board, and the input that output and the 10KV of the 4th high-voltage board start cabinet is connected; The output that 10KV starts cabinet is connected with outside Devices to test; The step-down end of the first dry-type transformer is connected with the input of the 5th high-voltage board, and the output of the second high-voltage board is connected with the input of the 6th high-voltage board; The input of the 7th high-voltage board is connected with the input of the 8th high-voltage board, the input that middle pressure starts cabinet is connected with the output of the 5th high-voltage board, the 6th high-voltage board, the 7th high-voltage board respectively, and the output of the 8th high-voltage board is connected with outside Devices to test respectively with the middle output starting cabinet of pressing; The output of third high pressure cabinet is connected with the input of the second dry-type transformer, the output of the second dry-type transformer is connected with the input of the first low-voltage cabinet, first output of the first low-voltage cabinet is connected with the input of low voltage starting cabinet, and the output of low voltage starting cabinet is connected with outside Devices to test; Second output of the first low-voltage cabinet is connected with the input of the second low-voltage cabinet, and the output of the second low-voltage cabinet is connected with outside Devices to test.
Wherein, the alternating voltage of the input input 6KV of the first dry-type transformer, boost terminal exports the alternating voltage of 10KV, and step-down end exports the alternating voltage of 3KV; Alternating voltage between the input input 2KV to 6KV of the second dry-type transformer, output exports the alternating voltage of 490V.
In the present embodiment, power-supply system major loop technical parameter and require shown in following table:
In the present embodiment, control for 10-11KVA electrical voltage system, 1) " 10kV-11kV high-voltage board 1 breaker closing " button is operated, the voltage display list in this loop just has display, display screen also has voltage to show simultaneously, the voltage of display is less than the voltage of selection, because system stops rear voltage regulator to automatically reset.2) operate " voltage regulator boosting ", " voltage regulator step-down " button, regulate the output voltage of voltage regulator, make system voltage export the voltage request reaching tested system.3) operate " high-voltage board 4 breaker closing ", system under test (SUT) obtains electric, confirms that power-supply system is normal simultaneously.
All power-supply system power-off, each corresponding power-supply system is provided with " export stop " button, the circuit breaker disjunction one by one in operation this electrical voltage system loop of stop button, until load cabinet II circuit breaker VD4 separating brake, three seconds interval times of all breaker open operations.System arranges danger button with centralized control cabinet on low-voltage cabinet 1-I, all circuit breakers separating brake simultaneously in operation emergency shutdown key system.
In the present embodiment, this operating system has independent operation and remote operation two kinds of methods of operation on the spot.Two kinds of operating systems, by reciprocal interlocking, make Operational System Control stable, reliable, flexible, easy.Generally, adopt teleoperated manner (centralized control operates in control room) cashier's office in a shop, once this mode of operation breaks down, independent operation on the spot can be adopted, normal production can not be affected like this, to guarantee the normality of producing.
In the present embodiment, teleoperated manner adopts PLC centralized control, and the feature of mode of operation is safely, flexibly, conveniently.Teleoperated manner is as follows: 1) user is first according to native system operating instruction, corresponding voltage is selected cashier's office in a shop in centralized control, then the corresponding circuit breaker of the corresponding button adhesive under this electric pressure is clicked step by step, under PLC controls, carried out the interlocking of low pressure, middle pressure, high-tension switch cabinet, after a certain electric pressure is selected, the switch cubicle of other electric pressures is locked cannot adhesive, user is if any the situation of misoperation, and system also can be refused automatically.2) pass through voltage-regulation button and digital display voltmeter cashier's office in a shop in centralized control, lifting trim voltage is to reach required output voltage, and user can carry out next step operation output voltage and start cabinet to user when the conditions are met.3) after finishing using, user uses the power supply of whole system all to cut off by shutdown device, uses the voltage of this grade also to need again by operating procedure 1 even if rethink), 2) power transmission again.
Local operation mode is the emergency mode adopted when remote operation is broken down, and operate in switch cabinet body, the feature of this mode is safe and reliable.Each switch cubicle is provided with on the spot/remote conversion button, and local operation and remote operation can not be conflicted.
In the present embodiment, operational subsystems comprises centralized control cabinet, the circuit diagram of this centralized control cabinet as shown in Figure 2, the voltage of 220V is by circuit breaker 1QF1, have 220V to be converted to 110V voltage by the transformation of transformer T1 is filter after circuit breaker 1QF2, PLC, frequency meter and voltage display list provide power supply.The filtering that 110V voltage enters wave filter again through continuous-current plant for touch-screen provides the direct voltage of 24V.
It is the voltage signal of 100V the voltage transitions of 380V that high voltage load cabinet is equipped with voltage transformer, and inlet wire frequency meter gathers 0 ~ 100V voltage signal, and dial plate demonstrates the frequency of end of incoming cables.3 voltmeters (range 12000V) are added at high voltage load cabinet, AB, BC, CA are alternate, add a 4-20mA transmitter, voltage display list can demonstrate primary voltage, the analog signal that now voltage signal converts PLC to is input to the input module of PLC simultaneously.
When the voltage of different grades exports, voltage display list now all can show, and when PLC receives the analog quantity of input simultaneously, PLC is through process, and coupled touch-screen can demonstrate electric pressure now accordingly.
In the present embodiment, control subsystem mainly comprises PLC module, PLC comprises CPU216 (I0.0-I2.7Q0.0-Q1.7) altogether, EM221CN (I3.0-14.7), EM221CN (15.0-I6.7) EM221CN (18.0-I8.7) 3 digital quantity input modules, EM223CN (I7.0-I7.7/Q2.0-Q2.7) digital quantity input, output mixing module, EM221CN (Q3.0-Q3.7) digital quantity output module, EM231CN (AI0-AI3) EM231CN (AI4-AI7) 2 Analog input mModule.
CPU216 input signal is the switching signal of button SB1-SB24, the input of EM221-2 (I5.0-I6.7) 16 numeral and EM223,221-3, mainly high-voltage board 7, low-voltage cabinet circuit breaker 1,2, load cabinet 1, low-voltage cabinet 2 separating brake, closing position signal, the boosting of oil immersion voltage regulator and step-down, dry change 1,2 high temperature alarm tripping operation, low-voltage cabinet 1-1 fault trip is reported to the police, and low-voltage cabinet 1-1 fault trip is reported to the police.
M231-1, EM231-2 analog input is from each control cubicle primary voltage and inlet wire current, the input signal of the 4-20mA gathered by Displaying Meter.
EM2228 point digital output, the output of the relay coil of the mainly separating brake action of load cabinet 1.
In the present embodiment, remote operation is all realized by PLC centralized control, arranges design control procedure according to Systematical control requirement and PLC control circuit.Now change these several sections of programs analyze with regard to protecting control, interlocked control, analog quantity.
Circuit breaker on circuit should have following defencive function: short-circuit protection, overload protection, open-phase protection.Integrated console has emergency stop push button in addition, in case of emergency presses emergency stop push button, and whole system major loop disconnects immediately, and to protect the safety of the person and equipment in an emergency situation, its PLC program as shown in Figure 3.
When a certain voltage gradation exports, all the other electric pressures lock without exception, can not operate, to ensure correctness and the uniqueness of output voltage grade; Every platform high-tension switch cabinet, when case cabinet body door is opened, this cabinet should power-off immediately; Reciprocal interlocking between often kind of mode of operation, makes various operating system in use not interfere with each other.Its PLC program as shown in Figure 4.
After PLC accepts analog quantity, through process, realize A/D conversion, touch-screen can show magnitude of voltage, and analyze for high-voltage board 5 primary voltage, its program as shown in Figure 5.
In Siemens, integer data directly can not be converted into floating number, therefore has to pass through following steps conversion.First high-voltage board 5 primary voltage data are stored in VD8 with DINT data type, then in order to promote computational accuracy, use DI_R that the data transaction in VD8 is become floating number,
Relative to the signal of 0 ~ 20mA, the image data of siemens PLC is 0 ~ 32000, and the data that namely every mA is corresponding are 1600, and therefore relative to signal 4 ~ 20mA that native system gathers, the image data of siemens PLC is exactly 6400 ~ 32000.Therefore the input range that 4 ~ 20mA is corresponding is 32000-6400=25600, so input value needs just can obtain divided by (DIV_R) 25600 percentage that it takies gamut,
Siemens 200 moves the signals collecting of carrying out 4 ~ 20mA by coordinate, the original corresponding collection signal of Siemens 200 is 0 ~ 20mA, scope so occupied by 4mA is 4/16=0.25, range ability namely occupied by 4 ~ 20mA is 0.25 ~ 1, therefore will by the movement of input value-0.25 come coordinate.Be multiplied by (MUL_R) 10000 after VD20-0.25 again, just obtain the magnitude of voltage between 0-10000.
As can be seen here, the data transaction between 6400-32000 corresponding for the analog signals of input becomes the voltage data between 0-10000 to export by linear transformation by PLC program, and touch-screen will show corresponding voltage.
The respective embodiments described above realize specific embodiments of the invention, persons of ordinary skill in the art may appreciate that and in actual applications, can do various change in the form and details to it, and without departing from the spirit and scope of the present invention.
Claims (8)
1. a power supply output control system, is characterized in that, comprises power subsystem, operational subsystems, control subsystem and display subsystem;
Described power subsystem, operational subsystems, display subsystem are connected with described control subsystem respectively;
Described power subsystem comprises output unit; The voltage that described output unit exports is provided with N number of voltage gear in the interval of 380V to 11KV; Described N be more than or equal to 2 integer;
Described operational subsystems is provided with N number of switch for setting output voltage shelves; Described switch and described voltage gear one_to_one corresponding; After switch described in one of them is closed, rest switch is all locked, cannot close;
Described control subsystem is used for:
Control the opening/closing of described switch and locking;
The magnitude of voltage of the actual output of described output unit is controlled according to the voltage gear of specifying;
Control described display subsystem and demonstrate output voltage values.
2. power supply output control system according to claim 1, is characterized in that, described output unit is provided with 13 voltage gears;
The output voltage of 13 described voltage gear difference corresponding 380V, 400V, 415V, 460V, 575V, 600V, 3KV, 3.3KV, 4160V, 6KV, 6.6KV, 10KV and 11KV.
3. power supply output control system according to claim 1, is characterized in that, the static precision of voltage regulation of described output voltage is ± 2%.
4. power supply output control system according to claim 1, is characterized in that, described operational subsystems comprises and is positioned at near-end operating assembly and far-end operation assembly; Described near-end operating assembly interlocks connection mutually with described far-end operation assembly.
5. power supply output control system according to claim 1, it is characterized in that, described power subsystem comprises high voltage load cabinet, Loading voltage regulator, the first high-voltage board, the second high-voltage board, third high pressure cabinet, the 4th high-voltage board, the 5th high-voltage board, the 6th high-voltage board, the 7th high-voltage board, the 8th high-voltage board, the first dry-type transformer, the second dry-type transformer, 10KV starts cabinet, middle pressure starts cabinet, the first low-voltage cabinet, the second low-voltage cabinet, low voltage starting cabinet;
The input of described high voltage load cabinet connects power input, and output is connected with the input of described Loading voltage regulator; The output of described Loading voltage regulator presses the input of cabinet to be connected with the first high-voltage board, the second high-voltage board, third high respectively, the output of described first high-voltage board is connected with the input of described first dry-type transformer, the boosting output of described first dry-type transformer is connected with the input of described 4th high-voltage board, and the output of described 4th high-voltage board is connected with the input that described 10KV starts cabinet; The output that described 10KV starts cabinet is connected with outside Devices to test; The step-down end of described first dry-type transformer is connected with the input of described 5th high-voltage board, and the output of described second high-voltage board is connected with the input of described 6th high-voltage board; The input of described 7th high-voltage board is connected with the input of described 8th high-voltage board, the input that described middle pressure starts cabinet is connected with the output of described 5th high-voltage board, the 6th high-voltage board, the 7th high-voltage board respectively, and the output of described 8th high-voltage board is connected with outside Devices to test respectively with the middle output starting cabinet of pressing; The output of described third high pressure cabinet is connected with the input of described second dry-type transformer, the output of described second dry-type transformer is connected with the input of described first low-voltage cabinet, first output of described first low-voltage cabinet is connected with the input of described low voltage starting cabinet, and the output of described low voltage starting cabinet is connected with outside Devices to test; Second output of described first low-voltage cabinet is connected with the input of described second low-voltage cabinet, and the output of described second low-voltage cabinet is connected with outside Devices to test.
6. power supply output control system according to claim 5, is characterized in that, the alternating voltage of the input input 6KV of described first dry-type transformer; Boost terminal exports the alternating voltage of 10KV, and step-down end exports the alternating voltage of 3KV.
7. power supply output control system according to claim 5, is characterized in that, the alternating voltage between the input input 2KV to 6KV of described second dry-type transformer, output exports the alternating voltage of 490V.
8. power supply output control system according to claim 1, is characterized in that, described control subsystem comprises control subsystem power supply; Described control subsystem power supply comprises AC transformer, filter, AC-DC converter;
The input of described AC transformer is connected with civil power, and output is connected with power input with the signal input part of described filter; The signal output part of described filter is connected with the input of described AC-DC converter, and the output of described AC-DC converter provides DC power supply for external equipment.
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| EP3888214A4 (en) * | 2018-11-28 | 2022-07-27 | Hitachi Energy Switzerland AG | Modularized interconnection device and system thereof |
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| EP3888214A4 (en) * | 2018-11-28 | 2022-07-27 | Hitachi Energy Switzerland AG | Modularized interconnection device and system thereof |
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| Publication number | Publication date |
|---|---|
| CN105375784B (en) | 2018-04-27 |
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