Dynamic reactive power compensator
By using a dynamic reactive power compensator with copper core flexible wire and 500Vac withstand voltage capacitors, the problem of frequent capacitor failures was solved, maintenance costs were reduced, and production safety and power factor were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-31
AI Technical Summary
In the existing pressing workshop, two sets of dynamic reactive power compensators are installed, but the capacitors are frequently damaged, affecting production.
Copper core flexible wires are used to connect the capacitors, and capacitors with a voltage rating of 500Vac are selected to avoid failure of the pull ring capacitor caused by the thermal expansion of the copper busbar.
It reduced maintenance material costs and improved power factor and production safety.
Smart Images
Figure CN224068363U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sugar production technology, specifically to a dynamic reactive power compensator. Background Technology
[0002] Existing pressing workshops are generally equipped with two sets of dynamic reactive power compensators, but the capacitors are frequently damaged during use, which seriously affects production. Summary of the Invention
[0003] The purpose of this application is to provide a dynamic var compensator to solve the problem that in the prior art, pressing workshops are generally equipped with two sets of dynamic var compensator devices, but the capacitors are frequently damaged during use, which seriously affects production.
[0004] To achieve the above objectives, this application provides a dynamic reactive power compensator, including: a circuit breaker QF2, an intermediate relay KM1, resistors R1, R2, and R3, and a power factor improvement circuit module, wherein...
[0005] The three terminals of the first end of the circuit breaker QF2 are respectively connected to the three phase lines L1, L2, and L3 of the three-phase power supply. The three terminals of the second end of the circuit breaker QF2 are respectively connected to the three terminals of the first end of the intermediate relay KM1. The three terminals of the second end of the intermediate relay KM1 are respectively connected to the first ends of the resistors R1, R2, and R3. The second ends of the resistors R1, R2, and R3 are respectively connected in parallel with multiple power factor improvement circuit modules.
[0006] Optionally, it also includes:
[0007] Circuit breaker QF1, the three terminals of the first end of circuit breaker QF1 are respectively connected to the three phase lines L1, L2 and L3 of the three-phase power supply, and the three terminals of the second end of circuit breaker QF1 are respectively connected in parallel to multiple power factor improvement circuit modules.
[0008] Optionally, it also includes:
[0009] Ammeter PA is connected to the terminal of the second terminal of the circuit breaker QF1 that is opposite to the phase line L2 of the three-phase power supply.
[0010] Optionally, it also includes: fuse FU1, fuse FU2, fuse FU3, WHK dual power automatic transfer switch, and voltmeter PV, wherein,
[0011] The first ends of fuses FU1 and FU2 are connected to the phase line L1 of the three-phase power supply, the first end of fuse FU3 is connected to the phase line L3 of the three-phase power supply, the second end of fuse FU1 is connected to terminals 1 and 7 of the WHK dual power automatic transfer switch, the second end of fuse FU2 is connected to terminal 3 of the WHK dual power automatic transfer switch, the second end of fuse FU3 is connected to terminal 5 of the WHK dual power automatic transfer switch, terminals 8 and 6 of the WHK dual power automatic transfer switch are connected, and one end of the voltmeter PV is connected, and terminals 2 and 4 of the WHK dual power automatic transfer switch are connected, and the other end of the voltmeter PV is connected.
[0012] Optionally, the power factor improvement circuit module includes a current transformer CT1, capacitors C11, C12, and C13, resistors R11, R12, and R13, a first diode anti-parallel amplifier module, a second diode anti-parallel amplifier module, a third diode anti-parallel amplifier module, fuses FU11, FU12, and FU13, induction coil reactors L11, L12, and L13, capacitors U13, V13, and W13, wherein...
[0013] The first terminal of the first diode reverse parallel amplifier module is connected to the second terminal of the resistor R1. The first terminal of the capacitor C11 is connected to the first terminal of the first diode reverse parallel amplifier module. The second terminal of the capacitor C11 is connected to the first terminal of the resistor R11. The second terminal of the resistor R11 is connected to the second terminal of the first diode reverse parallel amplifier module. The second terminal of the first diode reverse parallel amplifier module is also connected to the first terminal of the fuse FU11. The second terminal of the fuse FU11 is connected to the first terminal of the induction coil reactor L11. The second terminal of the induction coil reactor L11 is connected to the first terminal of the capacitor U13.
[0014] Optionally, the second terminal of capacitor U13 is connected to the first terminal of the second diode anti-parallel amplifier module, the first terminal of the second diode anti-parallel amplifier module is connected to the second terminal of resistor R2, the first terminal of capacitor C12 is connected to the first terminal of the second diode anti-parallel amplifier module, the second terminal of capacitor C12 is connected to the first terminal of resistor R12, the second terminal of resistor R12 is connected to the second terminal of the second diode anti-parallel amplifier module, the second terminal of the second diode anti-parallel amplifier module is also connected to the first terminal of fuse FU12, the second terminal of fuse FU12 is connected to the first terminal of induction coil reactor L12, and the second terminal of induction coil reactor L12 is connected to the first terminal of capacitor V13.
[0015] Optionally, the second terminal of capacitor V13 is connected to the first terminal of the third diode anti-parallel amplifier module, the first terminal of the third diode anti-parallel amplifier module is connected to the second terminal of resistor R3, the first terminal of capacitor C13 is connected to the first terminal of the third diode anti-parallel amplifier module, the second terminal of capacitor C13 is connected to the first terminal of resistor R13, the second terminal of resistor R13 is connected to the second terminal of the third diode anti-parallel amplifier module, the second terminal of the third diode anti-parallel amplifier module is also connected to the first terminal of fuse FU13, the second terminal of fuse FU13 is connected to the first terminal of induction coil reactor L13, the second terminal of induction coil reactor L13 is connected to the first terminal of capacitor W13, and the second terminal of capacitor W13 is connected to the first terminal of the first diode anti-parallel amplifier module. Capacitors U13, V13, and W13 are all 500Vac voltage-rated capacitors, and the connecting wires are copper core flexible wires.
[0016] Optionally, the current transformer CT1 is disposed between the first diode anti-parallel amplifier module, the second diode anti-parallel amplifier module, the third diode anti-parallel amplifier module and the fuses FU11, FU12 and FU13.
[0017] The embodiments of this application have the following advantages:
[0018] Compared with existing technologies, the dynamic reactive power compensator provided by the above technical solution uses copper core flexible wire to connect capacitors, and the capacitors are selected with a 500Vac withstand voltage rating. This avoids the failure of the pull ring capacitor caused by the thermal expansion of the copper busbar, reduces maintenance material costs, and improves the power factor and production safety rate. Attached Figure Description
[0019] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the circuit principle of a dynamic reactive power compensator provided for at least one embodiment of this application. Detailed Implementation
[0021] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0023] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0024] This application provides a dynamic reactive power compensator, referencing... Figure 1 It includes: circuit breaker QF2, intermediate relay KM1, resistor R1, resistor R2, resistor R3, and power factor improvement circuit module, among which,
[0025] The three terminals of the first end of the circuit breaker QF2 are respectively connected to the three phase lines L1, L2, and L3 of the three-phase power supply. The three terminals of the second end of the circuit breaker QF2 are respectively connected to the three terminals of the first end of the intermediate relay KM1. The three terminals of the second end of the intermediate relay KM1 are respectively connected to the first ends of the resistors R1, R2, and R3. The second ends of the resistors R1, R2, and R3 are respectively connected in parallel with multiple power factor improvement circuit modules.
[0026] In some embodiments, the circuit breaker further includes: a circuit breaker QF1, wherein the three terminals of the first end of the circuit breaker QF1 are respectively connected to the three phase lines L1, L2, and L3 of the three-phase power supply, and the three terminals of the second end of the circuit breaker QF1 are respectively connected in parallel to multiple power factor improvement circuit modules.
[0027] In some embodiments, the circuit breaker further includes an ammeter PA connected to a terminal of the second terminal of the circuit breaker QF1 opposite to a phase line L2 of the three-phase power supply.
[0028] In some embodiments, the system further includes: fuse FU1, fuse FU2, fuse FU3, a WHK dual power automatic transfer switch, and a voltmeter PV, wherein...
[0029] The first ends of fuses FU1 and FU2 are connected to the phase line L1 of the three-phase power supply, the first end of fuse FU3 is connected to the phase line L3 of the three-phase power supply, the second end of fuse FU1 is connected to terminals 1 and 7 of the WHK dual power automatic transfer switch, the second end of fuse FU2 is connected to terminal 3 of the WHK dual power automatic transfer switch, the second end of fuse FU3 is connected to terminal 5 of the WHK dual power automatic transfer switch, terminals 8 and 6 of the WHK dual power automatic transfer switch are connected, and one end of the voltmeter PV is connected, and terminals 2 and 4 of the WHK dual power automatic transfer switch are connected, and the other end of the voltmeter PV is connected.
[0030] In some embodiments, the power factor improvement circuit module includes a current transformer CT1, capacitors C11, C12, and C13, resistors R11, R12, and R13, a first diode anti-parallel amplifier module, a second diode anti-parallel amplifier module, a third diode anti-parallel amplifier module, fuses FU11, FU12, and FU13, induction coil reactors L11, L12, and L13, capacitors U13, V13, and W13, wherein...
[0031] The first terminal of the first diode reverse parallel amplifier module is connected to the second terminal of the resistor R1. The first terminal of the capacitor C11 is connected to the first terminal of the first diode reverse parallel amplifier module. The second terminal of the capacitor C11 is connected to the first terminal of the resistor R11. The second terminal of the resistor R11 is connected to the second terminal of the first diode reverse parallel amplifier module. The second terminal of the first diode reverse parallel amplifier module is also connected to the first terminal of the fuse FU11. The second terminal of the fuse FU11 is connected to the first terminal of the induction coil reactor L11. The second terminal of the induction coil reactor L11 is connected to the first terminal of the capacitor U13.
[0032] In some embodiments, the second terminal of capacitor U13 is connected to the first terminal of the second diode anti-parallel amplifier module, the first terminal of the second diode anti-parallel amplifier module is connected to the second terminal of resistor R2, the first terminal of capacitor C12 is connected to the first terminal of the second diode anti-parallel amplifier module, the second terminal of capacitor C12 is connected to the first terminal of resistor R12, the second terminal of resistor R12 is connected to the second terminal of the second diode anti-parallel amplifier module, the second terminal of the second diode anti-parallel amplifier module is also connected to the first terminal of fuse FU12, the second terminal of fuse FU12 is connected to the first terminal of induction coil reactor L12, and the second terminal of induction coil reactor L12 is connected to the first terminal of capacitor V13. The second terminal of capacitor V13 is connected to the first terminal of the third diode anti-parallel amplifier module. The first terminal of the third diode anti-parallel amplifier module is connected to the second terminal of resistor R3. The first terminal of capacitor C13 is connected to the first terminal of the third diode anti-parallel amplifier module. The second terminal of capacitor C13 is connected to the first terminal of resistor R13. The second terminal of resistor R13 is connected to the second terminal of the third diode anti-parallel amplifier module. The second terminal of the third diode anti-parallel amplifier module is also connected to the first terminal of fuse FU13. The second terminal of fuse FU13 is connected to the first terminal of induction coil reactor L13. The second terminal of induction coil reactor L13 is connected to the first terminal of capacitor W13. The second terminal of capacitor W13 is connected to the first terminal of the first diode anti-parallel amplifier module. Capacitors U13, V13, and W13 are all 500Vac voltage-rated capacitors, and the connecting wires are copper core flexible wires.
[0033] In some embodiments, the current transformer CT1 is disposed between the first diode anti-parallel amplifier module, the second diode anti-parallel amplifier module, the third diode anti-parallel amplifier module and the fuses FU11, FU12 and FU13.
[0034] In some embodiments, two additional power factor improvement circuit modules are also included, which are connected in parallel with the second terminals of resistors R1, R2, and R3, respectively.
[0035] In summary, compared with existing technologies, the dynamic reactive power compensator provided by the above technical solution uses copper core flexible wire to connect capacitors, and the capacitors are selected with a 500Vac withstand voltage rating. This avoids the failure of the pull ring capacitor caused by the thermal expansion of the copper busbar, reduces maintenance material costs, and improves the power factor and production safety rate.
[0036] Note that, unless otherwise explicitly stated, all features disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by alternative features for achieving the same, equivalent, or similar purpose. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features. Where used, "further," "preferably," "even further," and "more preferably" are simple starting points for describing another embodiment based on the foregoing embodiments, the combination of which with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment constitutes yet another embodiment.
[0037] In the implementation of functions and steps, the corresponding functions and steps in the various embodiments may occur in a different order than those shown. For example, two consecutive functions and steps may actually be executed or implemented substantially in parallel, and they may sometimes be executed or implemented in reverse order, depending on the functions involved.
[0038] Although this application has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this application fall within the scope of protection claimed in this application.
Claims
1. A dynamic reactive compensator, characterized by, Comprising: a circuit breaker QF2, an intermediate relay KM1, a resistor R1, a resistor R2, a resistor R3, a power factor improvement circuit module, wherein, three terminals of a first end of the circuit breaker QF2 are connected with three phase lines L1, L2, L3 of a three-phase power supply respectively, three terminals of a second end of the circuit breaker QF2 are connected with three terminals of a first end of the intermediate relay KM1 respectively, three terminals of a second end of the intermediate relay KM1 are connected with a first end of the resistor R1, the resistor R2, the resistor R3 respectively, and a second end of the resistor R1, the resistor R2, the resistor R3 is connected with a plurality of power factor improvement circuit modules in parallel respectively.
2. The dynamic reactive compensator of claim 1, wherein, Further comprising: a circuit breaker QF1, three terminals of a first end of the circuit breaker QF1 are connected with three phase lines L1, L2, L3 of a three-phase power supply respectively, three terminals of a second end of the circuit breaker QF1 are connected with a plurality of the power factor improvement circuit modules in parallel respectively.
3. The dynamic reactive compensator of claim 2, wherein, Further comprising: an ammeter PA, the ammeter PA is connected with a terminal of a second end of the circuit breaker QF1 which is opposite to a phase line L2 of a three-phase power supply.
4. The dynamic var compensator of claim 3, wherein, Further comprising: a fuse FU1, a fuse FU2, a fuse FU3, a WHK dual power automatic transfer switch, a voltmeter PV, wherein, a first end of the fuse FU1 and the fuse FU2 is connected with a phase line L1 of a three-phase power supply, a first end of the fuse FU3 is connected with a phase line L3 of a three-phase power supply, a second end of the fuse FU1 is connected with a terminal 1 and a terminal 7 of the WHK dual power automatic transfer switch respectively, a second end of the fuse FU2 is connected with a terminal 3 of the WHK dual power automatic transfer switch, a second end of the fuse FU3 is connected with a terminal 5 of the WHK dual power automatic transfer switch, a terminal 8 and a terminal 6 of the WHK dual power automatic transfer switch are connected, and are connected with one end of the voltmeter PV, a terminal 2 and a terminal 4 of the WHK dual power automatic transfer switch are connected, and are connected with the other end of the voltmeter PV.
5. The dynamic reactive compensator of claim 4, wherein, The power factor improvement circuit module comprises a current transformer CT1, a capacitor C11, a capacitor C12, a capacitor C13, a resistor R11, a resistor R12, a resistor R13, a first diode reverse parallel amplifier module, a second diode reverse parallel amplifier module, a third diode reverse parallel amplifier module, a fuse FU11, a fuse FU12, a fuse FU13, an inductive coil reactor L11, an inductive coil reactor L12, an inductive coil reactor L13, a capacitor U13, a capacitor V13, a capacitor W13, wherein, a first end of the first diode reverse parallel amplifier module is connected with a second end of the resistor R1, a first end of the capacitor C11 is connected with the first end of the first diode reverse parallel amplifier module, a second end of the capacitor C11 is connected with a first end of the resistor R11, a second end of the resistor R11 is connected with a second end of the first diode reverse parallel amplifier module, the second end of the first diode reverse parallel amplifier module is further connected with a first end of the fuse FU11, a second end of the fuse FU11 is connected with a first end of the inductive coil reactor L11, a second end of the inductive coil reactor L11 is connected with a first end of the capacitor U13.
6. The dynamic reactive compensator according to claim 5, characterized in that, the second end of the capacitor U13 is connected with the first end of the second diode reverse-parallel amplifier module, the first end of the second diode reverse-parallel amplifier module is connected with the second end of the resistor R2, the first end of the capacitor C12 is connected with the first end of the second diode reverse-parallel amplifier module, the second end of the capacitor C12 is connected with the first end of the resistor R12, the second end of the resistor R12 is connected with the second end of the second diode reverse-parallel amplifier module, the second end of the second diode reverse-parallel amplifier module is also connected with the first end of the fuse FU12, the second end of the fuse FU12 is connected with the first end of the inductive coil reactor L12, and the second end of the inductive coil reactor L12 is connected with the first end of the capacitor V13.
7. The dynamic reactive compensator according to claim 6, characterized in that, the second end of the capacitor V13 is connected with the first end of the third diode reverse-parallel amplifier module, the first end of the third diode reverse-parallel amplifier module is connected with the second end of the resistor R3, the first end of the capacitor C13 is connected with the first end of the third diode reverse-parallel amplifier module, the second end of the capacitor C13 is connected with the first end of the resistor R13, the second end of the resistor R13 is connected with the second end of the third diode reverse-parallel amplifier module, the second end of the third diode reverse-parallel amplifier module is also connected with the first end of the fuse FU13, the second end of the fuse FU13 is connected with the first end of the inductive coil reactor L13, the second end of the inductive coil reactor L13 is connected with the first end of the capacitor W13, the second end of the capacitor W13 is connected with the first end of the first diode reverse-parallel amplifier module, the capacitor U13, the capacitor V13, and the capacitor W13 are all 500Vac voltage-resistant grade capacitors, and the connecting wires are copper core soft wires.
8. The dynamic reactive compensator according to claim 7, characterized in that, the current transformer CT1 is arranged between the first diode reverse-parallel amplifier module, the second diode reverse-parallel amplifier module, the third diode reverse-parallel amplifier module, the fuse FU11, the fuse FU12, and the fuse FU13.