CN103296683A

CN103296683A - Microcomputer controllable silicon intelligent electric power compensation starter

Info

Publication number: CN103296683A
Application number: CN 201310083361
Authority: CN
Inventors: 王燕庆
Original assignee: SHANGHAI YAN QING ELECTRONIC CO Ltd
Current assignee: SHANGHAI YAN QING ELECTRONIC CO Ltd
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2013-09-11

Abstract

Provided is a microcomputer controllable silicon intelligent electric power compensation starter, and the technology that a microcomputer (a single chip microcomputer) is combined with controllable silicon is used. An electric power capacitor is used for compensating wattless power of electric power system sensibility load, so that a power factor is improved, voltage quality is improved, and circuit loss is lowered. A parallel capacitor is connected in a distributing line in parallel and is used for compensating distribution inductive reactance of the line, improving the static stability and dynamic stability, improving line voltage quality, lengthening power transmission distance and enlarging delivery capacity. The controllable silicon of 5-1000A is allocated and has three specifications, namely a starting box of 200-500A, a starting box of 600-800A and a starting box of 1000-1500A.

Description

Microcomputer controllable silicon intelligent electric power compensator starter

Technical field

Microcomputer controllable silicon intelligent electric power compensator is the advanced product in the low voltage equipment field, and he adopts microcomputerized control, adopts controllable silicon to electric power is started frequently, power supply frequently, and electric current is steady; Adopt electric capacity to carry out line build-out, but energy savings 20%; It is state-of-the-art electromechanical equipment.

Technical background

The technical background of microcomputer controllable silicon intelligent electric power compensator starter is to adopt microcomputer (single-chip microcomputer) in conjunction with the silicon controlled technology, according to the controllable silicon of the size configure 200-1000A of motor; The CPU of microcomputer adopts STC12LE5630AD, and the characteristics program storage has 30K, SRAM768 byte, PCA16 position, PWM position; These CPU reserves are big, can programme arbitrarily to the intellectuality control of power circuit, and programming adopts the C language to programme;

Traditional microcomputer power compensator adopts Contactor Starting, and its power consumption and transient current consumption are big, and it is not frequent to power, and relay is easy to generate spark, burns out starting box easily; Microcomputer-recognized intelligent electric motor starting case adopts controllable silicon that motor is started frequently, power supply frequently, and electric current is steady, and it is long can not produce the spark life-span;

Summary of the invention

1, the technical background of microcomputer controllable silicon intelligent electric power compensator starter is to adopt microcomputer (single-chip microcomputer) in conjunction with the silicon controlled technology, adopts power capacitor, the reactive power of compensates electric system inductive load, to improve power factor, improve quality of voltage, reduce line loss; Shunt capacitor: be connected in parallel in the distribution line, in order to the distribution induction reactance of compensated line, improve quiet, the dynamic stability of system, improve the quality of voltage of circuit, lengthen and send electrical distance and increase conveying capacity.The controllable silicon of configuration 5-1000A; It is respectively-200A-500 starting box, a kind of starting box of 600-800A, 1000A-1500A starting box, totally three specifications;

Microcomputer controllable silicon intelligent electric power compensator employing intelligent power capacitor is integrated modern observing and controlling, power electronics, network communication, automation control, advanced technologies such as power capacitor.Changed tradition Reactive power compensationThe controller technology that device falls behind and the mechanical type that falls behind ContactorOr electromechanical integration SwitchAs the switching technology of switched capacitor, changed the bulky and heavy tactic pattern of traditional reactive power compensator, thereby made a new generation Low-pressure reactive compensationEquipment has that compensation effect is better, and volume is littler, and power consumption is lower, and price is more honest and cleaner, and it is more to save cost, use more flexible, safeguard convenient, longer service life, the characteristics that reliability is higher have adapted to the modern times Electrical networkRequirements at the higher level to reactive power compensation;

2, the CPU of microcomputer adopts STC12LE5630AD, and the characteristics program storage has 30K, SRAM768 byte, PCA16 position, PWM position; These CPU reserves are big, and clock 12MHZ can programme arbitrarily to the intellectuality control of supply line, and programming adopts the C language to programme; Peripheral circuit adopts the control of LS373HC circuits for triggering; Control panel adopts touch, and key circuit adopts touch circuit control, adopts 8 by key control; Adopting the 5mm charactron to carry out state shows; 3, the microcomputer power supply circuits adopt the 10V transformer, adopt the 7808 rectifications 5V that comes out to power; Motor power supply is introduced controllable silicon with phase line, and by controllable silicon output phase line supply line, controllable silicon starts frequently to motor, power supply frequently, and electric current, voltage are steady, energy savings 20%; Microcomputer controllable silicon intelligent electric power compensator is modular construction, and volume is little, field connection is simple, easy to maintenance; Only need to increase the dilatation that module number can be realized reactive compensation system;

Functions such as power-failure protecting, short-circuit protection, voltage open-phase protection, capacitor overheat protector effectively ensure capacitor safe, prolong equipment life; The control physical quantity is reactive power, adopts reactive power flow prediction and time-delay multi-point sampling technology, guarantees the switching dead-beat.When heavy duty, idlely fully compensated;

4, casing: divide and to open hanging and two kinds of cabinet-types, adopt cold bundle steel plate to make, electrostatic plastic spraying is adopted in outer list processing; Perhaps adopt stainless-steel sheet to make; Open hanging size: 500mmX380mmX450mm; Cabinet-type size: 550-800mmX500mmX460mm;

5, the silicon controlled radiator adopts aluminium alloy to make, and radiator is directly installed on and strengthens heat radiation on the cabinet; Wiring board is directly installed on the radiator, and the negative pole of wiring board is connected to casing with radiator, and wiring board is dispelled the heat; It is reliable that ground protection is wanted;

High-quality capacitor

6, adopt the self-healing low-voltage compensation condenser, capacitor-embedded temperature sensor, reflection capacitor inner heat degree realizes overheat protector;

Embed the fling-cut switch module, perfect protection design, intelligent power capacitor has functions such as power-failure protecting, short-circuit protection, voltage open-phase protection, capacitor overheat protector, effectively ensures capacitor safe, prolongs equipment life;

Control technology advanced person

The control physical quantity is reactive power, adopts reactive power flow prediction and time-delay multi-point sampling technology, guarantees the switching dead-beat.When heavy duty, idlely fully compensated;

Anti-throw in-of oscillation technology

Adopt the unique design principle, prevent that controller from crashing and uncompensation or the overcompensation scene of generation, prevent the capacitor switching vibration.

Automatic compensating power;

Intelligent power capacitor is according to the big or small automatic switching of reactive load power, and the dynamic compensation reactive power is improved the quality of power supply.But intelligence capacitor separate unit uses, also can use by many All-China Federation of Taiwan Compatriots machine;

Man-machine interface close friend

Show equipment operational factors such as electric current, voltage, reactive power;

Show switching state, composite switch module malfunction, communication state;

And can realize conveniently that debugging/operating state is switched, manual operating function;

Microcomputer controllable silicon intelligent electric power compensator constitutes

Microcomputer controllable silicon intelligent electric power compensator is modularized design, and forming module has:

High-quality capacitor, intelligent monitoring module, fling-cut switch module, route protection module, human-computer interface module

But microcomputer controllable silicon intelligent electric power compensator separate unit uses, and also can use by many All-China Federation of Taiwan Compatriots machine.Substitute the conventional auto-reactive compensation device of being formed by the lead connection by intelligent controller, fuse, combination switch or mechanical contactor, thermal relay, low voltage power capacitor, indicator light etc.; Intelligent power capacitor integrated intelligent control module, fast fling-cut switch and capacitor protection, the project organization exquisiteness, can flexible configuration to satisfy the user to the demand of reactive power compensation.The reactive compensation system that microcomputer controllable silicon intelligent electric power compensator constitutes;

The reactive compensation system of product composition relatively sees the following form 1.

Description of drawings

Fig. 1 is: microcomputer controllable silicon intelligent electric power compensator starter circuit diagram.

Embodiment

1, at first check wiring board, check electronic devices and components, check fully to have got well and carry out the wiring board welding; Welding has been got well and has been reexamined once, installs, and curings of programming, the fully good debugging that powers on is debugged and has been got well, and product wore out 72 hours, fully good just can install; ,

2,Wiring adopts the copper bar wiring of 10X3-15X5 to connect;

3, Rack enclosure has processed back installation silicon controlled radiator, and on rack, control panel is installed on the rack, and wiring board passes through after being installed in and finishing on the radiatorMicrocomputer controllable silicon intelligent electric power compensator detector detects qualified finishing;

4, authenticate by CCC;

5, the application production licence is got production licence production;

Points for attention

During 1 installation capacitor, the wiring of every capacitor preferably adopts independent flexible cord to link to each other with bus, does not adopt hard bus to connect, and causes capacitor casing to damage to prevent erection stress, destroys the leakage of oil that seals and cause.

Any bad contact in 2 capacitor loops all may cause higher-order of oscillation electric arc, the applied electric field intensity of capacitor is increased and heating and early stage the damage.Therefore, must keep contacting of electric loop and grounded part good during installation.

The capacitor of 3 low voltage grades after series connection when running in the high voltage hierarchical network, its each shell over the ground between, should make it reliable insulation by installing the measures such as insulator that are equivalent to the working voltage grade additional.

4 capacitors are used for high one-level rated voltage after Y-connection, and when being isolated neutral, the shell of capacitor should insulate over the ground;

5 capacitors will distribute capacitance one time before installing, and make its alternate balance, and deviation is no more than 5% of total capacity.The balanced balanced current error is no more than the requirement of relaying protection operating current in the time of also should satisfying operation when protective relaying device is housed.

The wiring of 6 pairs of indivedual compensation condensers should be accomplished: to direct startup or the induction motor that starts through rheostat, its electric capacity that improves power factor can directly be connected with the outlet terminal of motor, does not install switchgear or fuse between the two; Inductor motor to adopting the star-triangle start device to start preferably adopts three single-phase electricity containers, and every capacitor is directly parallel on two terminals of every phase winding, makes the wiring of capacitor always consistent with the connection of winding.

7 pairs of grouping compensation secondary capacitors should be connected the outside of low pressure grouping bus mains switch, the self-excitation magnetic phenomenon that produces when bus-tie circuit breaker disconnects to prevent from dividing into groups.

The secondary capacitor group of 8 centralized compensations should ad hoc switch and be contained in the outside of circuit master switch, and is not contained on the low-voltage bus bar.

Claims

1. the technical background of microcomputer controllable silicon intelligent electric power compensator starter is to adopt microcomputer (single-chip microcomputer) in conjunction with the silicon controlled technology, adopt power capacitor, the reactive power of compensates electric system inductive load is to improve power factor, improve quality of voltage, reduce line loss; Shunt capacitor: be connected in parallel in the distribution line, in order to the distribution induction reactance of compensated line, improve quiet, the dynamic stability of system, improve the quality of voltage of circuit, lengthen and send electrical distance and increase conveying capacity; The controllable silicon of configuration 5-1000A; It is respectively-200A-500 starting box, a kind of starting box of 600-800A, 1000A-1500A starting box, totally three specifications 1.

2. microcomputer controllable silicon intelligent electric power compensator starter employing intelligent power capacitor is integrated modern observing and controlling, power electronics, network communication, automation control, advanced technologies such as power capacitor; Changed tradition Reactive power compensationThe controller technology that device falls behind and the mechanical type that falls behind ContactorOr electromechanical integration SwitchAs the switching technology of switched capacitor, changed the bulky and heavy tactic pattern of traditional reactive power compensator, thereby made a new generation Low-pressure reactive compensationEquipment has that compensation effect is better, and volume is littler, and power consumption is lower by 2.

3. the CPU of microcomputer adopts STC12LE5630AD, and the characteristics program storage has 30K, SRAM768 byte, PCA16 position, PWM position; These CPU reserves are big, and clock 12MHZ can programme arbitrarily to the intellectuality control of supply line, and programming adopts the C language to programme; Peripheral circuit adopts the control of LS373HC circuits for triggering; Control panel adopts touch, and key circuit adopts touch circuit control, adopts 8 by key control; Adopting the 5mm charactron to carry out state shows; 3, the microcomputer power supply circuits adopt the 10V transformer, adopt the 7808 rectifications 5V that comes out to power; Motor power supply is introduced controllable silicon with phase line, and by controllable silicon output phase line supply line, controllable silicon starts frequently to motor, power supply frequently, and electric current, voltage are steady, energy savings 20%; Microcomputer controllable silicon intelligent electric power compensator is modular construction, and volume is little, field connection is simple, easy to maintenance; Only need to increase the dilatation 3 that module number can be realized reactive compensation system.

4. casing: divide and open hanging and two kinds of cabinet-types, adopt cold bundle steel plate to make, electrostatic plastic spraying is adopted in outer list processing; Perhaps adopt stainless-steel sheet to make; Open hanging size: 500mmX380mmX450mm; Cabinet-type size: 550-800mmX500mmX460mm4.

5. the silicon controlled radiator adopts aluminium alloy to make, and radiator is directly installed on and strengthens heat radiation on the cabinet; Wiring board is directly installed on the radiator, and the negative pole of wiring board is connected to casing with radiator, and wiring board is dispelled the heat, and ground protection wants reliable 5.