High Voltage Capacitor

Unpacking for checkWVP series static advancer has passed the strict quality inspection and performance testing before ex-factory. After it arrives at the installation field, please check whether there is any damage due to careless transportation, and whether the model of the product conforms to the one ordered before unpacking. As the product is continuously upgraded, there may be several parts or words of the equipment and product, which do not conform to the advertising materials; please consult us if the equipment meets with such problems. After opening the box, check if there are qualified mark, product description, product warranty manual and packing list in the document box in the front cabinet door of the equipment. In case of any problem, please contact us or the supplier..1. Check if the information attached to the equipment is complete and in line with the content of packing list of the equipment. 2. Check the nameplate on the cabinet body to confirm that the equipment is in line with the ordered equipment    WVP2 series static advancer                   WVP 2 - 600G typeMotor Power: 240 KW           Size: W900*D800*H2000Motor Rotor Current 442A        N.W.: 450KGProduct NO: 20908474           Production Date: Aug.,2009Application: Rolling mill         Working stand:Q/XWZ11HUBEI WORLDWIDE ELECTRIC GROUP CO., LTDAdd: #1 Worldwide Road Xiangyang City, Hubei Province 3. Check whether the spare parts and components are damaged or lost. The spare parts and components shall be governed by the procurement contract.                   Usage Condition  Applicable standardsElectronic devices equipped with electronic control equipment  GB3797-1989Rated Voltage3-phase AC 380V+10%Controlling Powerrequired to provide with three-phase four-wire power supply frequency50Hz+2%Motor 75KW~10000KW wound rotor asynchronous motorStructure TypeCabinetProtection classIP20,IP30Environment temperature-40ºC ~ +50ºCRelative humidityNot more than 90%Working altitudeNot more than 2000mm(If more than 2000mm, it can be specially designed according to the specific conditionsVentilationThere should be no other objects 500 mm above the cabinet, for example, a ditch is closed, the static advancer should be 100 mm overhead. Safety requirementThere should be no fire, no explosion, no chemical corrosion and severe vibration  Safety warnings Warning!Be free from raff handling or installation, rain and electromagnetic interference.. Warning!Prevent the children and the public from touching or approaching to this equipment. This equipment, with dangerous voltage, controls the dangerous rotary mechanism            Warning!This equipment shall be only used for the purpose specified by the manufacturer; any modification without authorization or operation not conforming to the regulations of    this manual will result in severe personal injury and other injuries.       Warning!Please read the installation operation and safety instructions of maintenance in this manual carefullybefore operating this equipment. I. GeneralIn China, the electric energy consumed by motors takes up 60%~68% of all industrial energy consumption. Reactive consumption caused by inductive load like the motor is the main source of reactive consumption of electric network; however, large and medium motors are the main power equipments used in industrial and mining enterprises. Thus, how to reduce the reactive consumption caused by large and medium size motors is the key to energy saving and consumption reduction of many industrial and mining enterprises.Meanwhile, because most of the motor load are not constant , the load changes very complexly, and even loads mutations, such as rolling machine and punching machine in steelworks, defibrator in wood industry, tearing machine in sugar industry and crusher machine in mining .In this case, if we use a capacitor for reactive power compensation, it will make the compensation over or deficient, because capacitor compensation is only reactive compensation for electric network except the motor, which can reduces the reactive transmission amount on the electric network, but operation parameters of the motor itself like the current of the motor, power factor and so on have no change at all. If capacitor compensation is taken in that service condition, the compensation amount can't change when the load of the motor changes, thus over compensation or deficient compensation will happen and the using reliability of the capacitor will easily be reduced because the sudden variety of the motor current and burst can even happen. If ordinary static advancer is taken, the compensation will be over or deficient too, because the ordinary advancer even can't be normally used because of too heavy or too low load.Scientific research institutions both aboard and at home always take the compensation of load variety service condition as a difficult problem to tackle, but with quite little result. Our company organized researchers developed the static advancer called WVP used in the situation of load variety during two years on the basis of the research and application of reactive power compensation for years. It successfully solves the difficult problem of reactive power compensation in load variety service condition.WVP series static advancer is also different from self-excitation (rotated) advancer. WVP series static advancer adopts advanced alternating frequency technology and silicon controlled control technology, which can track the running state of the motor and changes the relative parameter automatically to obtain a perfect effect which cannot be done by self-excitation advancer. Furthermore, WVP series static advancer overcomes radically the defects of particular no dustproof, short lifespan, frequent maintenance of "commutator" structure of self-excitation advancer. It has no rotatable parts of the advancer mechanism, and it is dustproof, highly reliable, convenient for maintenance and with long service lifespan, which is an ideal high-technical product to replace self-excitation advancer. WVP series static advancer is widely used for the on-site compensation of large and medium wound asynchronous motor in the fields of cement, chemical industry, wood, sugar, iron and steel, metallurgy, mining and so on.  II. Operation principle WVP series of static advancer is connected in the rotor loop, judging the motor operation status by connecting motor operating current, voltage signal, and treat this information and the rotor current signal from rotor current sensor as well as the synchronizing signal from the power-frequency voltage in the SCM at the same time, adjust the compensation amount automatically according to the motor operation, realize auto compensation. timely gives trigger order enlarged by trigger board to control the alternative frequency device composed of 12 thyristors, in order to transform the power-frequency power-supply to the same frequency of rotor current and superimpose the advanced phase position on rotor loop of the motor. Change the phase relationship of rotor current and voltage, further change stator current and voltage phase relationship via magnetic field, so as to decrease power factor, and finally increase the motor power factor, decrease the stator current, so as to realize compensation   When the motor is running on load, its rotor current is I2e, and stator current is I1e. The vector diagram is shown as follows: In the diagram:U:voltage vectorI1:stator current vectorI2:rotor current vectorIm:field current vectorI1e:stator current rated vectorI2e:rotor current rated vectorΦ1:motor rated power factor angle   Φ2:power factor angle after compensating From electro mechanics we know that field current Im can be obtained by Im=I1e-I2e,and Im also can be obtained from the vector diagram. After the electric potential of the static advancer superimposed on the rotor loop, the phase position of rotor current change to I2 in the diagram. The field current Im does no change because the load doesn't change. The stator current I1 now can be obtained according to I1=Im+I2 as the vector diagram shown above. From the diagram we can see that the power factor angle and the amplitude value of I1 are all smaller than that of I1e, which indicates the power factor of the motor increased and the stator current reduced. Thus we can see the essential distinction between WVP series static advancer for reactive power compensation of the motor and the compensation of motor stator side parallel capacitor. The schematic diagrams of capacitor compensation and static advancer compensation are as follows:    In the diagram, the motor is equivalently simplified, andR1, X1 are resistance and inductance of the stator equivalent circuit of the motor; R2, X2 are resistance and inductance of the rotor equivalent circuit of the motor; C is the on-site compensated capacity; Uf is the equivalent circuit of the advancer; M is the wiring interface of the motor.We can see from the diagram:The capacity compensation has the function of supplying the motor with reactive power and reducing the reactive input of the electric network by reducing the reactive power absorbed from the electric network by the motor to increase the power factor of the electric network. But the power consumption of the motor is not reduced and the stator current of the motor and its power factor doesn't change, that is, there is no change in the motor operating status. The function of static advancer compensation is adding an additional power supply in rotor loop and changing the phase position relationship between rotor current and rotor voltage, as well as changing the phase position relationship between stator current and stator voltage by magnetic field in order to reduce the reactive consumption of the motor. In this way, the status of motor running is changed, and the stator current reduced, thus the power factor of the electric network increased because the power factor of the motor itself is increased. In addition, reduction of the stator current lowers the copper loss of the motor, and increases the efficiency of the motor along with the temperature down of the motor. The overload capacity correspondingly is improved and the machine hour product is increased whereas single consumption is reduced.  III. Performance characteristicWVP series static advancer is a high-tech result for reactive power on site compensation of large or medium wound motor, which applicable to75~10000kW wound asynchronous motor. Its excellent performance mainly shows in the following aspects: 1) Solve the difficult problem of on site compensation of load-variety motor, which fill the technology and product blank in this area.2) Select advanced alternating frequency technology and micro control technology, high reliability.3) Power factor of the motor up to 0.95~0.99,reactive power down below 60%.4) stator current of the motor down to 10%~20%,wire loss, copper loss down to 20%-30%.5) Rapid decline of temperature of the motor, great improvement in efficiency and overload capacity, prolonged service life of the motor. 6) Compensating performance is much higher than capacitance compensation: it not only improves the power factor of the circuit, but also improves the power factor of the motor itself.7) All-round performance is better than rotated advancer: controlled by micro computer and it can automatically tracks the running state of the motor and automatically changes the relative parameter to get a perfect effect; high ability to adapt to the environment because it has no running parts.8)  Compensation performance is much better than ordinary static phase advancer in variable load conditions: double CPU control, can adjust parameters timely according to the load changes, to achieve the purpose of dynamic compensation, make the power factor is always in the optimal state9)  Friendly man-machine interface, easy operation, trouble automatically protecting function, maintenance without interrupting the production. IV. Technical parameter1. Performance indexl improve the power factor of the motor to 0.95 or above (or increase 20% or above)l lower down the stator current of the motor to 10%~20%l lower down the temperature rise of the motor winding to 10% or above2. Input and output parameterInput:l signal of motor stator current(01,04): Standard 0~5A signal output from some phase current transformer.l signal of motor stator voltage(05, 06): standard 100V signal output from two-phase wire-voltage via the voltage transformer for high voltage motor; standard 380V signal output from two-phase wire-voltage directly leading for low voltage motorl Note: the signal of stator current of the motor shall not be the same with the one of the stator voltage. That is to say, the voltage signal shall only be B phase or C phase if the current signal is A phase. l Start finished signal(W,111):Comes from the rotor short circuit signal of the starter, which usually supplied by star-point short circuit contactor. This signal is required to be kept and the contact capacity is 5A, 380V.Output:l Start allowable(ready)signal(121,123): This signal is used for the interlock of motor primary cabinet, which concatenates in the start button loop. The capacity of this contact is AC380, 5A.l Trouble stop(trip)signal(125, 129)and(131,133):This signal is used for the interlock of motor primary cabinet, choosing one of the two according to the different state: (125, 129) is for circuit breaker kind electric trip switch. Parallel connect it with stop button;(131, 133) is for contactor kind electric trip switch. Concatenate it with stop button. and the contact capacity is 5A, 380V. 3. Service power supplyWVP series static advancer needs the external to supply three-phase four-wire power supply. The capacity is below: type specificationcapacity of power supplysectional area of the cableWVP2-400 type15A6 mm2WVP2-600 type20A6 mm2WVP2-800type25A6 mm2WVP2-1000 type30A10 mm2WVP2-1200 type40A10 mm2WVP2-1400 type50A16mm2WVP2-1600 type50A16 mm2    V Method of type selection5.1. Instruction of model   W  VP                                                 C: with PLC  Z: with DCS                                       G (D):Suitable for high (low) voltage motor                                        Max rotor current capacity                                        Design number                                       Changing load static advancer                                       Worldwide 5.2 Model Table Static advancer modelAdaptive motor parametersRated rotor current(A)Rated rotor current(A)Rated rotor current(A)WVP2-400D≤420≤245380WVP2-400G≤420≤245≥3000WVP2-600D420~560245~570380WVP2-600G420~560245~570≥3000WVP2-800D560~750570~1250380WVP2-800G560~750570~1250≥3000WVP2-1000G800~9001250~2500≥3000WVP2-1200G900~11001250~2500≥3000WVP2-1400G1100~13002500~4000≥3000WVP2-1600G1300~15002500~4000≥3000WVP2-1800G1500~17002500~4000≥3000WVP2-2000G1700~19004000~6000≥3000For example: WVP2-1200G indicates that the static advancer is suitable for motor which its rotor current is no more than 1200A, rated voltage is more than 3000V  VI Installation6.1 Installation diagram and dimensions Static advancer modelDimensionsInstallation dimensionA×B×CD×EWVP2-400D900×760×2000600×640WVP2-400GWVP2-600DWVP2-600GWVP2-800D1000×800×2000600×700WVP2-800GWVP2-1000G1200×960×2000900×840WVP2-1200GWVP2-1400G1300×1060×22001000×940WVP2-1600GWVP2-1800G1400×1160×22001200×1040WVP2-2000G Note: ² The device must be safely and firmly installed.² Before use, please make sure the equipment is correct and reliable grounding according to the national electrical safety requirements and other relevant standards.² In case of accident, grounding terminals must be reliably grounded, otherwise electric shock may happen   6.2. Wiring sketch map and precautionsThe installation of the WVP static advancer shall be correctly grounded according to the wiring mode shown in below sketch.         Note: ² Minimize electromagnetic contactors and relays, and other sources of interference close contact with the advancer.² When wiring main circuit, the size should be selected according to the national electrical safety requirements.² Motor and rotor current should not exceed the rated capacity of the static advancer² Equipment wiring should be connected with inner control line, and then the power.² When device is powered, do not touch the internal circuit boards and components, in case of electric shock.² When the power cut off, do not touch the inner circuit board and any spare parts immediately.  VII Operation 7.1 Operation Panel   Key function instructionKey-press IDKey-press nameFunction instructionSet key1. Press this key to set parameter2. Press this button to see the next function code and its parameterIncrement keyIncrease the amount when modify the parametersDeduction keyReduce the amount when modify the parametersIn phaseIn phase keyPress this key to in phaseOut phaseOut phase keyPress this key to out phase 7.2 Flow chart of the controller parameters     7.3 Controller parameter setting function table: FunctionSetting rankFactory  valueInstruction CodeNameP01Controller work method 0,100:without return difference function   1:with return difference functionP02Current display error correction-50~500Correct small error of currentP03Transformer ratio0~2000200CT primary current value, the default secondary side rated 5AP04Light-load motor current0~200050P01 is set to 0, showing motor operating conditions that determine the threshold current; P01 is set to 1, said motor operating conditions determine the minimum threshold current hysteresisP05Over-load motor current0~2000100Only valid when P01 is set to 1, showing motor operating conditions determine the threshold current limit hysteresisP06Password setting0~20000Setting protection for the parametersP07Phase valid value0~20000P07 < motor current when in phase