CN202616781U - Capacitive power grid local voltage lifting device - Google Patents

Capacitive power grid local voltage lifting device Download PDF

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Publication number
CN202616781U
CN202616781U CN2012202286029U CN201220228602U CN202616781U CN 202616781 U CN202616781 U CN 202616781U CN 2012202286029 U CN2012202286029 U CN 2012202286029U CN 201220228602 U CN201220228602 U CN 201220228602U CN 202616781 U CN202616781 U CN 202616781U
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current transformer
secondary coil
surge protector
capacitor
fuse
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Expired - Fee Related
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CN2012202286029U
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Chinese (zh)
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周小伟
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Hunan Tianyan Machinery Co Ltd
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Hunan Tianyan Machinery Co Ltd
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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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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Abstract

Disclosed is a capacitive power grid local voltage lifting device, which comprises a plurality of groups of power capacitor switching devices connected in parallel, a voltage controller A, a first surge protector RV1, a second surge protector RV2, a third surge protector RV3, a switch Q, a first current transformer TA1, a second current transformer TA2 and a third current transformer TA3. When in use, a first electrode Q1, a second electrode Q2 and a third electrode Q3 of the switch Q of the voltage lifting device are connected with three-phase power lines L1, L2 and L3, of which the voltages need to be lifted, through primary coils of the first current transformer TA1, the second current transformer TA2 and the third current transformer TA3 respectively. The group number of the power capacitor switching devices and the capacity of each group are determined by specific conditions of a circuit and a load as well as expected output voltage lifting range and accuracy.

Description

Condenser type electrical network local voltage lifting device
Technical field
The utility model relates to power technology and Electrical Control Technology field, the device that particularly a kind of condenser type electrical network local voltage promotes.
Background technology
The adjusting of electrical network voltage is to realize through the shunting switch of conversion transformer traditionally, and what this method was regulated is the transformer output voltage of whole electrical network afterwards, can not regulate the voltage of a certain branch road and a certain part thereof separately.In order to solve the low problem of electrical network local voltage, present common practice is exactly to increase pressure regulation, pressure stabilizing device such as compensation, magnetic saturation type at the power consumption equipment front end.These pressure regulation, pressure stabilizing device can not improve line voltage, and concerning electrical network, they are loads of perception, and this tends to further reduce line voltage, consumes more idlely, causes bigger line loss, need the more reactive power compensation of increase.Especially for the impact load,,, often be difficult to solve the low problem of electrical network local voltage, even make electric motor starting more difficult because this kind equipment itself can produce the loss of voltage like electric motor starting.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of prior art and provide a kind of and utilize voltage on the induction reactance of power circuit and voltage-phase that capacity current produces when flowing through circuit induction reactance and the electric capacity (because electric capacity is parallelly connected with load; Therefore capacitance voltage also is a load voltage) phase place comes to rise to lower line voltage distribution the principle of the circuit output voltage of expectation on the contrary, promotes the device of electrical network local voltage through the electric capacity that it is suitable that detection line voltage is confirmed switching.
The technical scheme of the utility model is: a kind of condenser type electrical network local voltage lifting device, electric capacitor switching device, voltage controller A, the first Surge Protector RV1, the second Surge Protector RV2, the 3rd Surge Protector RV3, switch Q and the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3 that are connected in parallel by plural groups form.
Described electric capacitor switching device is made up of capacitor group C, thermal relay FR, capacitor switching contactor KM, the first current limiting reactor LC1, the second current limiting reactor LC2, the 3rd current limiting reactor LC3 and the first fuse F U1, the second fuse F U2, the 3rd fuse F U3.
Capacitor group C is composed in series by the first electric capacitor C1, the second electric capacitor C2 and the 3rd electric capacitor C3; The end of the first thermal element FR1 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the 3rd electric capacitor C3; The other end of the first thermal element FR1 of thermal relay FR is connected with capacitor switching contactor KM first utmost point KM1; The other end of capacitor switching contactor KM first utmost point KM1 is connected with the first current limiting reactor LC1, and the other end of the first current limiting reactor LC1 is connected with the first fuse F U1.
The end of the second thermal element FR2 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the second electric capacitor C2; The other end of the second thermal element FR2 of thermal relay FR is connected with capacitor switching contactor KM second utmost point KM2; The other end of capacitor switching contactor KM second utmost point KM2 is connected with the second current limiting reactor LC2, and the other end of the second current limiting reactor LC2 is connected with the first fuse F U2.
The end of the 3rd thermal element FR3 of thermal relay FR is connected with the second electric capacitor C2 of capacitor group C, the 3rd electric capacitor C3; The other end of the 3rd thermal element FR3 of thermal relay FR is connected with the 3rd utmost point KM3 of capacitor switching contactor KM; The other end of the 3rd utmost point KM3 of capacitor switching contactor KM is connected with the 3rd current limiting reactor LC3, and the other end of the 3rd current limiting reactor LC3 is connected with the 3rd fuse F U3.
In condenser type electrical network local voltage lifting device; The other end of the first fuse F U1 in first group of electric capacitor switching device is connected with the first Surge Protector RV1, and the other end ground connection of the first Surge Protector RV1 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.The other end of the second fuse F U2 is connected with the second Surge Protector RV2, and the other end ground connection of the second Surge Protector RV2 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.The other end of the 3rd fuse F U3 is connected with the 3rd Surge Protector RV3, and the other end ground connection of the 3rd Surge Protector RV3 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.By that analogy, the connected mode of second group of electric capacitor switching device～N group electric capacitor switching device is identical with the connected mode of first group of electric capacitor switching device.The end of switch Q first utmost point Q1 is connected with the first Surge Protector RV1, the first fuse F U1; The end of second utmost point Q2 is connected with the second Surge Protector RV2, the second fuse F U2, and the end of the 3rd utmost point Q3 is connected with the 3rd Surge Protector RV3, the 3rd fuse F U3.Voltage controller A port A1 is connected with the first Surge Protector RV1; Voltage controller A port A2 is connected with the second Surge Protector RV2; Voltage controller A port A3 is connected with the 3rd Surge Protector RV3; Voltage controller A port A4 is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil and the 3rd current transformer TA3 secondary coil; Voltage controller A port A5 is connected with the other end of the 3rd current transformer TA3 secondary coil; Voltage controller A port A6 is connected with the other end of the second current transformer TA2 secondary coil, and voltage controller A port A7 is connected with the other end of the first current transformer TA1 secondary coil.
The major function of described voltage controller A is according to the voltage that records, the switching that electric current is controlled electric capacitor, also has overcurrent protection and electric current and voltage Presentation Function in addition.
Described capacitor switching contactor KM also can adopt noncontacting switch, like controllable silicon, solid-state relay etc.
During use; Switch Q first utmost point Q1 of voltage lifting device, second utmost point Q2, the 3rd utmost point Q3 are connected with the three-phase power circuit L1, L2, the L3 that need booster tension through the primary winding of the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3 respectively, and L11, L21, L31 are respectively the three-phase power circuit voltage output end behind the booster tension.
The detailed process of condenser type electrical network local voltage lifting device booster tension is following:
Voltage controller A in the condenser type electrical network local voltage lifting device handles the back according to preset desired output voltage and the line voltage distribution that measures and load current and necessarily organizes the electric capacitor of number by predetermined switching scheme switching, makes line voltage distribution reach the voltage of desired output.The group number of institute's switching electric capacitor and every group capacity confirm that according to the circuit parameter of circuit circuit parameter comprises line resistance r, circuit induction reactance X lWith the concrete condition of load and the output voltage expanded reach and the precision of expection.
The further technical scheme of condenser type electrical network local voltage lifting device that the utility model provides is: in condenser type electrical network local voltage lifting device, increase the 4th current transformer TA4, the 5th current transformer TA5 and the 6th current transformer TA6 that is used for detecting load current; One end of the 4th current transformer TA4 secondary coil, the 5th current transformer TA5 secondary coil and the 6th current transformer TA6 secondary coil is connected with voltage controller A port A4; The other end of the 4th current transformer TA4 secondary coil is connected with voltage controller A port A10; The other end of the 5th current transformer TA5 secondary coil is connected with voltage controller A port A9, and the other end of the 6th Current Transformer Secondary coil TA6 is connected with voltage controller A port A8.
During use; One end of the 4th current transformer TA4 primary winding, the 5th current transformer TA5 primary winding and the 6th current transformer TA6 primary winding is connected with the three-phase power circuit L1, L2, the L3 that need booster tension respectively, and the other end of the 4th current transformer TA4 primary winding, the 5th current transformer TA5 primary winding and the 6th current transformer TA6 primary winding is connected voltage output end L11, L21, L31 respectively.
The utility model compared with prior art has following characteristics:
The utility model is compared with existing voltage boosting method, and its beneficial effect is that the voltage lifting device not only can not increase electric network reactive-load, and voltage promotes the effect that electric capacity can doublely play reactive power compensation.Being specially adapted to line end promotes with the voltage that bigger perceptual impact load point is arranged.
Further describe below in conjunction with accompanying drawing and embodiment detailed structure the utility model.
Description of drawings
Accompanying drawing 1 is a condenser type electrical network local voltage lifting device line construction sketch map;
Accompanying drawing 2 is for being added with the condenser type electrical network local voltage lifting device line construction sketch map of current transformer group TA4～TA6.
Embodiment
Embodiment one, a kind of condenser type electrical network local voltage lifting device are made up of six groups of electric capacitor switching devices that are connected in parallel, voltage controller A, the first Surge Protector RV1, the second Surge Protector RV2, the 3rd Surge Protector RV3, switch Q and the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3.
Described electric capacitor switching device is made up of six groups of electric capacitor switching devices that are connected in parallel, voltage controller A, the first Surge Protector RV1, the second Surge Protector RV2, the 3rd Surge Protector RV3, switch Q and the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3.
Described electric capacitor switching device is made up of capacitor group C, thermal relay FR, capacitor switching contactor KM, the first current limiting reactor LC1, the second current limiting reactor LC2, the 3rd current limiting reactor LC3 and the first fuse F U1, the second fuse F U2, the 3rd fuse F U3.
Capacitor group C is composed in series by the first electric capacitor C1, the second electric capacitor C2 and the 3rd electric capacitor C3; The end of the first thermal element FR1 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the 3rd electric capacitor C3; The other end of the first thermal element FR1 of thermal relay FR is connected with capacitor switching contactor KM first utmost point KM1; The other end of capacitor switching contactor KM first utmost point KM1 is connected with the first current limiting reactor LC1, and the other end of the first current limiting reactor LC1 is connected with the first fuse F U1.
The end of the second thermal element FR2 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the second electric capacitor C2; The other end of the second thermal element FR2 of thermal relay FR is connected with capacitor switching contactor KM second utmost point KM2; The other end of capacitor switching contactor KM second utmost point KM2 is connected with the second current limiting reactor LC2, and the other end of the second current limiting reactor LC2 is connected with the first fuse F U2.
The end of the 3rd thermal element FR3 of thermal relay FR is connected with the second electric capacitor C2 of capacitor group C, the 3rd electric capacitor C3; The other end of the 3rd thermal element FR3 of thermal relay FR is connected with the 3rd utmost point KM3 of capacitor switching contactor KM; The other end of the 3rd utmost point KM3 of capacitor switching contactor KM is connected with the 3rd current limiting reactor LC3, and the other end of the 3rd current limiting reactor LC3 is connected with the 3rd fuse F U3.
In condenser type electrical network local voltage lifting device; The other end of the first fuse F U1 in first group of electric capacitor switching device is connected with the first Surge Protector RV1, and the other end ground connection of the first Surge Protector RV1 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.The other end of the second fuse F U2 is connected with the second Surge Protector RV2, and the other end ground connection of the second Surge Protector RV2 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.The other end of the 3rd fuse F U3 is connected with the 3rd Surge Protector RV3, and the other end ground connection of the 3rd Surge Protector RV3 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil.By that analogy, the connected mode of second group of electric capacitor switching device～6th group electric capacitor switching device is identical with the connected mode of first group of electric capacitor switching device.The end of first utmost point Q1 of switch Q is connected with the first Surge Protector RV1, the first fuse F U1; The end of second utmost point Q2 of switch Q is connected with the second Surge Protector RV2, the second fuse F U2, and the end of the 3rd utmost point Q3 of switch Q is connected with the 3rd Surge Protector RV3, the 3rd fuse F U3.Voltage controller A port A1 is connected with the first Surge Protector RV1; Voltage controller A port A2 is connected with the second Surge Protector RV2; Voltage controller A port A3 is connected with the 3rd Surge Protector RV3; Voltage controller A port A4 is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil and the 3rd current transformer TA3 secondary coil; Voltage controller A port A5 is connected with the other end of the 3rd current transformer TA3 secondary coil; Voltage controller A port A6 is connected with the other end of the second current transformer TA2 secondary coil, and voltage controller A port A7 is connected with the other end of the first current transformer TA1 secondary coil.
During use, the 3rd utmost point Q3 of first utmost point Q1 of the switch Q of voltage lifting device, second utmost point Q2 of switch Q, switch Q is connected with the three-phase power circuit L1, L2, the L3 that need booster tension through the primary winding of the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3 respectively.L11, L21, L31 are respectively the three-phase power circuit voltage output end behind the booster tension.
In the present embodiment, basic load is terminal 20m like circuit 3Air compressor machine, the minimum floating voltage 360V of circuit adds the 40kVar electric capacity 20V that raises approximately, and air compressor machine start-up course voltage can not be lower than 360V.Obviously air compressor machine definitely can't start when minimum when the circuit floating voltage is in.Through test and calculating, add 240kVar electric capacity and can guarantee that air compressor machine starts smoothly.At condenser type electrical network local voltage lifting device 6 groups of electric capacitor switching devices are installed, the electric capacitor of 6 groups of electric capacitor switching devices is 40kVar, and voltage controller A controls the switching of electric capacitor switching device between 390V～420V by voltage control.Actual result is different according to the circuit floating voltage, and start-up course drops into 2 to 6 groups of electric capacitor switching devices, starts the back and uses 1 to 3 group of electric capacitor switching device, power factor-0.9～+ 0.9.
Embodiment two, present embodiment are in the condenser type electrical network local voltage lifting device that embodiment one provides, to increase the 4th current transformer TA4, the 5th current transformer TA5 and the 6th current transformer TA6; One end of the 4th current transformer TA4 secondary coil, the 5th current transformer TA5 secondary coil and the 6th current transformer TA6 secondary coil is connected with voltage controller A port A4; The other end of the 4th current transformer TA4 secondary coil is connected with voltage controller A port A10; The other end of the 5th current transformer TA5 secondary coil is connected with voltage controller A port A9, and the other end of the 6th Current Transformer Secondary coil TA6 is connected with voltage controller A port A8.
During use; One end of the 4th current transformer TA4 primary winding, the 5th current transformer TA5 primary winding and the 6th current transformer TA6 primary winding is connected with the three-phase power circuit L1, L2, the L3 that need booster tension respectively, and the other end of the 4th current transformer TA4 primary winding, the 5th current transformer TA5 primary winding and the 6th current transformer TA6 primary winding is connected voltage output end L11, L21, L31 respectively.In condenser type electrical network local voltage lifting device, increase the 4th current transformer TA4, the 5th current transformer TA5 and the 6th current transformer TA6, the intellectuality that can improve condenser type electrical network local voltage lifting device.

Claims (2)

1. condenser type electrical network local voltage lifting device, it is characterized in that: electric capacitor switching device, voltage controller A, the first Surge Protector RV1, the second Surge Protector RV2, the 3rd Surge Protector RV3, switch Q and the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3 that are connected in parallel by plural groups form;
The major function of described voltage controller A is according to the voltage that records, the switching that electric current is controlled electric capacitor, also has overcurrent protection and electric current and voltage Presentation Function in addition;
Described electric capacitor switching device is made up of the electric capacitor switching device that is connected in parallel by plural groups, voltage controller A, the first Surge Protector RV1, the second Surge Protector RV2, the 3rd Surge Protector RV3, switch Q and the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3;
Described electric capacitor switching device is made up of capacitor group C, thermal relay FR, capacitor switching contactor KM, the first current limiting reactor LC1, the second current limiting reactor LC2, the 3rd current limiting reactor LC3 and the first fuse F U1, the second fuse F U2, the 3rd fuse F U3;
Capacitor group C is composed in series by the first electric capacitor C1, the second electric capacitor C2 and the 3rd electric capacitor C3; The end of the first thermal element FR1 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the 3rd electric capacitor C3; The other end of the first thermal element FR1 of thermal relay FR is connected with capacitor switching contactor KM first utmost point KM1; The other end of capacitor switching contactor KM first utmost point KM1 is connected with the first current limiting reactor LC1, and the other end of the first current limiting reactor LC1 is connected with the first fuse F U1;
The end of the second thermal element FR2 of thermal relay FR is connected with the first electric capacitor C1 of capacitor group C, the second electric capacitor C2; The other end of the second thermal element FR2 of thermal relay FR is connected with capacitor switching contactor KM second utmost point KM2; The other end of capacitor switching contactor KM second utmost point KM2 is connected with the second current limiting reactor LC2, and the other end of the second current limiting reactor LC2 is connected with the first fuse F U2;
The end of the 3rd thermal element FR3 of thermal relay FR is connected with the second electric capacitor C2 of capacitor group C, the 3rd electric capacitor C3; The other end of the 3rd thermal element FR3 of thermal relay FR is connected with the 3rd utmost point KM3 of capacitor switching contactor KM; The other end of the 3rd utmost point KM3 of capacitor switching contactor KM is connected with the 3rd current limiting reactor LC3, and the other end of the 3rd current limiting reactor LC3 is connected with the 3rd fuse F U3;
In condenser type electrical network local voltage lifting device; The other end of the first fuse F U1 in first group of electric capacitor switching device is connected with the first Surge Protector RV1, and the other end ground connection of the first Surge Protector RV1 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil; The other end of the second fuse F U2 is connected with the second Surge Protector RV2, and the other end ground connection of the second Surge Protector RV2 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil; The other end of the 3rd fuse F U3 is connected with the 3rd Surge Protector RV3, and the other end ground connection of the 3rd Surge Protector RV3 also is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil, the 3rd current transformer TA3 secondary coil; The connected mode of second group of electric capacitor switching device～N group electric capacitor switching device is identical with the connected mode of first group of electric capacitor switching device; The end of first utmost point Q1 of switch Q is connected with the first Surge Protector RV1, the first fuse F U1; The end of second utmost point Q2 is connected with the second Surge Protector RV2, the second fuse F U2, and the end of the 3rd utmost point Q3 is connected with the 3rd Surge Protector RV3, the 3rd fuse F U3; Voltage controller A port A1 is connected with the first Surge Protector RV1; Voltage controller A port A2 is connected with the second Surge Protector RV2; Voltage controller A port A3 is connected with the 3rd Surge Protector RV3; Voltage controller A port A4 is connected with an end of the first current transformer TA1 secondary coil, the second current transformer TA2 secondary coil and the 3rd current transformer TA3 secondary coil; Voltage controller A port A5 is connected with the other end of the 3rd current transformer TA3 secondary coil; Voltage controller A port A6 is connected with the other end of the second current transformer TA2 secondary coil, and voltage controller A port A7 is connected with the other end of the first current transformer TA1 secondary coil.
2. a kind of condenser type electrical network local voltage lifting device according to claim 1; It is characterized in that: in condenser type electrical network local voltage lifting device, increase the 4th current transformer TA4, the 5th current transformer TA5 and the 6th current transformer TA6; One end of the 4th current transformer TA4 secondary coil, the 5th current transformer TA5 secondary coil and the 6th current transformer TA6 secondary coil is connected with voltage controller A port A4; The other end of the 4th current transformer TA4 secondary coil is connected with voltage controller A port A10; The other end of the 5th current transformer TA5 secondary coil is connected with voltage controller A port A9, and the other end of the 6th Current Transformer Secondary coil TA6 is connected with voltage controller A port A8.
CN2012202286029U 2012-05-21 2012-05-21 Capacitive power grid local voltage lifting device Expired - Fee Related CN202616781U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202286029U CN202616781U (en) 2012-05-21 2012-05-21 Capacitive power grid local voltage lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202286029U CN202616781U (en) 2012-05-21 2012-05-21 Capacitive power grid local voltage lifting device

Publications (1)

Publication Number Publication Date
CN202616781U true CN202616781U (en) 2012-12-19

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Application Number Title Priority Date Filing Date
CN2012202286029U Expired - Fee Related CN202616781U (en) 2012-05-21 2012-05-21 Capacitive power grid local voltage lifting device

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CN (1) CN202616781U (en)

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Granted publication date: 20121219

Termination date: 20200521