Intelligent power-saving protection device

Abstract

The invention provides an intelligent power-saving protection device, and belongs to the technical field of electric energy meter super-capacitors, the intelligent power-saving protection device comprises a breaking protection system, a machine core, a machine cabinet, a loop assembly and a control system, the machine cabinet is a rectangular machine cabinet, a supporting transverse plate is arranged at the bottom of the machine cabinet, and the loop assembly is arranged at the bottom of the machine cabinet; the machine core is arranged above a transverse plate at the bottom of the cabinet, the machine core is connected with the control system through the loop assembly, and the control system is used for detecting the specific electric power condition of the machine core and controlling the on-off of the loop assembly. The frame type circuit breaker and the power-saving protection device are integrated, an original switch cabinet of the system can be replaced, cost is saved, and meanwhile precious space in a power distribution room is not additionally occupied. The electric energy quality can be improved, the electric energy can be saved, the circuit can be switched according to the operation requirement, and the breaking protection of the circuit can be carried out when the power equipment or the circuit breaks down.

Description

Technical Field

[0001] The invention relates to the technical field of power supply energy saving, and specifically provides an intelligent power saving protection device. Background Art

[0002] The existing power systems all have power pollution problems such as three-phase imbalance, overvoltage, transients, surges, harmonics, and low power factor, which not only cause waste of power resources, but also may cause damage to power equipment.

[0003] In order to avoid the above problems, power-saving protection devices are usually installed in an electrical system or electrical equipment, reactive power compensation technology is used, or frequency converters are adopted. The purpose is to balance the three-phase current, eliminate transients, surges, harmonics and other power waste, improve the power factor, and adjust excess energy consumption to achieve the purpose of power saving.

[0004] At present, the existing power-saving devices cannot balance the three-phase current in real time; the reactive compensation technology cannot adjust the three-phase balance in real time, and it is easy to over-compensate or under-compensate. The equipment structure is complex, especially the electricity in it is easy to be damaged, resulting in a shorter service life, requiring frequent maintenance, and a short service life; the inverter acts on a single device and will generate high-order harmonics, which cannot optimize the power saving of the overall power system, and some power-saving devices have large self-loss, and the actual power saving effect is limited. In addition, the existing power-saving devices cannot disconnect and control the circuit when the line is overloaded, short-circuited, overcurrent, etc., and they all require a separate space for installation and placement. Summary of the invention

[0005] Therefore, the present invention provides an intelligent power-saving protection device to solve the above-mentioned problems. It can automatically and in real time balance and adjust the three-phase voltage and three-phase current, reduce and suppress high-order harmonics, improve the power factor, reduce the impact current, and realize the input or removal of part of the power equipment or lines according to the operation needs and the circuit disconnection protection when the power equipment or lines fail. The device of the present invention can assume the function of the switch cabinet, replace the original switch cabinet, enhance the sense of integration, and save the space of the distribution room.

[0006] The present invention provides an intelligent power-saving protection device, which includes a disconnection protection system, a core, a cabinet, a circuit component and a control system, wherein:

[0007] The cabinet is a rectangular cabinet, and a supporting horizontal plate is provided at the bottom thereof. The core is provided above the horizontal plate at the bottom of the cabinet, and the core is connected to the control system through the loop assembly.

[0008] The control system is used to detect the specific power status of the movement and control the on and off of the circuit components.

[0009] Furthermore, the movement includes an iron core group and three high and low coil windings, the iron core group is an equilateral triangle three-dimensional ring iron core, the high and low coil windings are respectively located at the top corners of the equilateral triangle three-dimensional ring iron core, and the distances between the three high and low coil windings are the same and are distributed in an equilateral triangle.

[0010] Furthermore, the equilateral triangular three-dimensional ring core includes three rounded rectangular parts of the same shape, and the straight sides of the rounded rectangular parts are closely attached to the straight sides of the adjacent rounded rectangular parts and are assembled at a central angle of 120° to form the equilateral triangular three-dimensional ring core. The vertical cross-section of the equilateral triangular three-dimensional ring core is an equilateral triangle, and the straight sides of the rounded rectangular parts are closely attached to the straight sides of the adjacent rounded rectangular parts to form the core column of the core.

[0011] Furthermore, the high and low coil windings are arranged on the core column to form three phases of the three-dimensional structure of the movement, wherein each phase establishes an independent micromagnetic field, and the three-phase magnetic field is adjusted in real time through the closed loop of the three high and low coil windings to solve the imbalance of the three-phase current, thereby saving energy and increasing the service life of the load equipment.

[0012] Furthermore, the disconnection protection system includes a frame-type circuit breaker and a corresponding indication control system above it, and the frame-type circuit breaker is located on the left side of the control system.

[0013] Furthermore, the circuit assembly includes a primary circuit assembly and a secondary circuit assembly, wherein:

[0014] The main circuit assembly includes a main circuit vacuum AC contactor and a main circuit connecting copper bar, and the main circuit positive air AC contactor is connected to the control system and the movement through the main circuit connecting copper bar;

[0015] The secondary circuit assembly comprises three secondary circuit vacuum AC contactors and a secondary circuit copper busbar, and the three secondary circuit vacuum AC contactors are connected to the movement and the control system via the secondary circuit copper busbar.

[0016] Under the control of the control system, the main circuit component can monitor the state of each magnetic field in the three-phase magnetic field in real time, thereby controlling the size of each phase magnetic field through the secondary circuit component, thereby balancing the three-phase current in real time and ensuring the stability and reliability of the device.

[0017] Furthermore, the control system includes a control panel, a power monitoring module, a switch and a display module, wherein:

[0018] The switch includes a gear switch and a knob switch for adjusting the mains power and energy-saving circuit;

[0019] The display module includes a display screen, a power indicator light, a power saving indicator light and a bypass indicator light. The display screen can be used to view power data and power saving status in real time and adjust them immediately as needed.

[0020] The control system remotely monitors various data through the power monitoring module, obtains power data in real time, and realizes one-key seamless switching between power saving and mains power through the knob switch, thus solving the technical problem of switching power supply without power outage.

[0021] Furthermore, the rack-mounted circuit breaker is connected to the movement via the loop assembly, and the indication control system is connected to the control system via a cable;

[0022] The control system includes closing, energy storage, and opening indicator lights, corresponding buttons and knob switches, to replace the original switch cabinet to switch the line, and to disconnect the circuit for protection when the power equipment or line fails; and to monitor the power quality of the power grid in real time according to the power monitoring module and the battery cell operation data, and adjust the gear switch in real time, so that the entire energy-saving system works under the minimum loss condition to achieve the best energy-saving effect.

[0023] At the same time, the control system monitors the quality of the power grid and the working status of the energy-saving system. When a power grid failure occurs, the power supply circuit is immediately cut off and an alarm is sent to the superior system. When the energy-saving system fails, the bypass switch is immediately started to bypass the energy-saving system, and the power supply system is not affected.

[0024] Furthermore, the device also includes a heat dissipation device, which is arranged at the bottom of the cabinet and is connected to the control system to effectively dissipate heat and prevent overheating.

[0025] Furthermore, the high and low coil windings of the movement are cross-connected by two or more windings, including a main winding and a compensation winding, wherein:

[0026] The main winding has the overall reactance characteristic of "low pass and high resistance", which will make most of the high-order harmonics and currents of each phase cancel each other out or absorb each other and convert them into magnetic energy;

[0027] The compensation winding converts the magnetic energy converted by the main winding into current to compensate the load end, thereby greatly reducing the power loss of the load caused by eddy current, harmonic components, etc.

[0028] The main winding automatically balances the three-phase voltage and current, automatically suppresses high-order harmonics, and automatically suppresses grid impacts; the compensation winding mainly compensates the grid harmonics and unbalanced energy to the load to achieve energy-saving effects.

[0029] Compared with the prior art, the method of using spatial information to analyze the cycle has the following outstanding beneficial effects:

[0030] 1. The present invention integrates the frame circuit breaker with the power-saving protection device, which can replace the original switch cabinet of the system, saving costs while not occupying the precious space in the power distribution room. It can not only improve the quality of electric energy and save electric energy, but also switch the line according to the operation needs and disconnect the circuit for protection when the power equipment or line fails.

[0031] 2. The present invention adjusts the magnetic field between the three movements in real time through the control system, solves the imbalance of three-phase current, reduces high-order harmonics, suppresses pollution such as surge transients, saves energy and increases the service life of the load equipment.

[0032] 3. The present invention adopts a regular triangle three-dimensional ring iron core, and the core adopts a special manufacturing technology of annular cross-interconnection of the main winding. According to Lenz's law, the core will present an overall reactance characteristic of "low pass and high resistance", which will make most of the high-order harmonics and currents of each phase cancel each other out or absorb each other and convert them into magnetic energy. The secondary winding will then synchronously compensate the converted current to the load end, thereby greatly reducing the power loss of the load caused by eddy current, harmonic components, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the device of the present invention;

[0034] Figure 2 is a side view of the device of the present invention;

[0035] Figure 3 It is a schematic diagram of the core assembly of the present invention;

[0036] Figure 4 It is a schematic diagram of the position of the high and low coil windings of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the equilateral triangle three-dimensional ring iron core of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] An intelligent power-saving protection device, comprising a disconnection protection system 6, a movement 1, a cabinet 2, a circuit component 3 and a control system 4, wherein:

[0040] like Figure 1 As shown, the cabinet 2 is a rectangular cabinet, and a supporting horizontal plate 21 is provided at the bottom thereof. The movement 1 is arranged above the horizontal plate 21 at the bottom of the cabinet 2, and the movement 1 is connected to the control system 4 through the loop component 3.

[0041] The control system 4 is used to detect the specific power status of the movement 1 and control the on / off of the circuit component 3 .

[0042] like Figure 4 As shown, the movement 1 includes an iron core group and three high and low coil windings 12. The iron core group is an equilateral triangle three-dimensional ring iron core 11. The high and low coil windings 12 are respectively located at the top corners of the equilateral triangle three-dimensional ring iron core 11. The distances between the three high and low coil windings 12 are the same and are distributed in an equilateral triangle.

[0043] like Figure 3 , 4 As shown in Figure 5, the equilateral triangular three-dimensional ring core 11 includes three rounded rectangular parts of the same shape, and the straight sides of the rounded rectangular parts are closely attached to the straight sides of the adjacent rounded rectangular parts and are assembled at a central angle of 120° to form the equilateral triangular three-dimensional ring core 11. The vertical cross-section of the equilateral triangular three-dimensional ring core 11 is an equilateral triangle, and the straight sides of the rounded rectangular parts are closely attached to the straight sides of the adjacent rounded rectangular parts to form the core column of the core.

[0044] The high and low coil windings 12 are arranged on the core column to form three phases of the three-dimensional structure of the movement 1, wherein each phase establishes an independent micromagnetic field, and the three-phase magnetic field is adjusted in real time through the closed loop of the three high and low coil windings 12 to solve the imbalance of the three-phase current, thereby saving energy and increasing the service life of the load equipment.

[0045] like Figure 1 As shown, the disconnection protection system 6 includes a frame-type circuit breaker and a corresponding indication control system above it, and the frame-type circuit breaker is located on the left side of the control system 4.

[0046] like Figure 1 , 2 As shown, the circuit component 3 includes a primary circuit component 31 and a secondary circuit component 32, wherein:

[0047] The main circuit assembly 31 includes a main circuit vacuum AC contactor 311 and a main circuit connecting copper bar 312. The main circuit positive vacuum AC contactor 311 is connected to the control system 4 and the movement 1 through the main circuit connecting copper bar 312.

[0048] The secondary circuit assembly 32 includes three secondary circuit vacuum AC contactors 321 and a secondary circuit copper bus 322 . The three secondary circuit vacuum AC contactors 321 are connected to the movement 1 and the control system 4 via the secondary circuit copper bus 322 .

[0049] Under the control of the control system 4, the state of each magnetic field in the three-phase magnetic field can be monitored in real time, so that the size of each phase magnetic field can be controlled through the secondary loop component 32, thereby balancing the three-phase current in real time and ensuring the stability and reliability of the device.

[0050] The control system 4 includes a control panel, a power monitoring module, a switch 41 and a display module 42, wherein:

[0051] The switch 41 includes a gear switch and a knob switch for adjusting the mains power and energy-saving circuit;

[0052] The display module 42 includes a display screen, a power indicator light, a power saving indicator light, and a bypass indicator light. The display screen can be used to view power data and power saving status in real time and can be adjusted immediately as needed;

[0053] The control system 4 remotely monitors various data through the power monitoring module, obtains power data in real time, and realizes one-key seamless switching between power saving and mains power through the knob switch, thus solving the technical problem of switching power supply without power outage.

[0054] The disconnection protection system 6 includes a frame-type circuit breaker and an indication control system, wherein the frame-type circuit breaker is connected to the movement 1 through the circuit assembly, and the indication control system is connected to the control system through a cable;

[0055] The control system includes closing, energy storage and opening indicator lights, corresponding buttons and knob switches.

[0056] It can replace the original switch cabinet to switch the line, and disconnect the circuit for protection when the power equipment or line fails; and monitor the power quality of the power grid in real time according to the power monitoring module and the battery operation data, and adjust the gear switch in real time, so that the entire energy-saving system works under the minimum loss condition to achieve the best energy-saving effect.

[0057] At the same time, the control system monitors the quality of the power grid and the working status of the energy-saving system. When a power grid failure occurs, the power supply circuit is immediately cut off and an alarm is sent to the superior system. When the energy-saving system fails, the bypass switch is immediately started to bypass the energy-saving system, and the power supply system is not affected.

[0058] like Figure 2 As shown, the device further includes a heat dissipation device 5, which is disposed at the bottom of the cabinet 2 and is connected to the control system 4 to effectively dissipate heat and prevent overheating.

[0059] The high and low coil windings 12 of the movement 1 are cross-connected by two or more windings, including a main winding and a compensation winding, wherein:

[0060] The main winding has the overall reactance characteristic of "low pass and high resistance", which will make most of the high-order harmonics and currents of each phase cancel each other out or absorb each other and convert them into magnetic energy;

[0061] The compensation winding converts the magnetic energy converted by the main winding into current to compensate the load end, thereby greatly reducing the power loss of the load caused by eddy current, harmonic components, etc.

[0062] The main winding automatically balances the three-phase voltage and current, automatically suppresses high-order harmonics, and automatically suppresses grid impacts; the compensation winding mainly compensates the grid harmonics and unbalanced energy to the load to achieve energy-saving effects.

[0063] The embodiments described above are only preferred specific implementations of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent power-saving protection device, characterized in that: The device comprises a disconnection protection system (6), a core (1), a cabinet (2), a circuit component (3) and a control system (4), wherein: The cabinet (2) is a rectangular cabinet, and a supporting horizontal plate (21) is provided at the bottom thereof. The machine core (1) is arranged above the horizontal plate (21) at the bottom of the cabinet (2). The machine core (1) is connected to the control system (4) via the circuit component (3). The control system (4) is used to detect the specific power status of the movement (1) and control the on / off of the circuit component (3).

2. The intelligent power saving protection device according to claim 1, characterized in that: The core (1) comprises an iron core group and three high and low coil windings (12); the iron core group is an equilateral triangle three-dimensional ring iron core (11); the high and low coil windings (12) are respectively located at the vertex angles of the equilateral triangle three-dimensional ring iron core (11); the three high and low coil windings (12) are at the same distance from each other and are distributed in an equilateral triangle.

3. The intelligent power-saving protection device according to claim 2, characterized in that: The equilateral triangular three-dimensional ring iron core (11) comprises three rounded rectangular pieces of the same shape, the straight sides of the rounded rectangular pieces being closely adjacent to the straight sides of the adjacent rounded rectangular pieces and being assembled at a central angle of 120° to form the equilateral triangular three-dimensional ring iron core (11), the vertical cross-section of the equilateral triangular three-dimensional ring iron core (11) being a regular triangle, the straight sides of the rounded rectangular pieces being closely adjacent to the straight sides of the adjacent rounded rectangular pieces forming the core column of the iron core.

4. The intelligent power-saving protection device according to claim 3, characterized in that: The high and low coil windings (12) are arranged on the core column to form three phases of a three-dimensional structure of the movement (1), wherein each phase establishes an independent micro-magnetic field, and the three-phase magnetic field is adjusted in real time through the closed loop of the three high and low coil windings (12).

5. An intelligent power-saving protection device according to claim 3 or 4, characterized in that: The disconnection protection system (6) comprises a frame-type circuit breaker and an indication control system, wherein: The rack-mounted circuit breaker is connected to the movement (1) via the loop assembly (3), and the indication control system is connected to the control system (4) via a cable.

6. The intelligent power-saving protection device according to claim 5, characterized in that: The circuit component (3) comprises a primary circuit component (31) and a secondary circuit component (32), wherein: The main circuit component (31) comprises a main circuit vacuum AC contactor (311) and a main circuit connecting copper bar (312); the main circuit positive vacuum AC contactor (311) is connected to the control system (4) and the movement (1) via the main circuit connecting copper bar (312); The secondary circuit assembly (32) comprises three secondary circuit vacuum AC contactors (321) and a secondary circuit copper busbar (322), and the three secondary circuit vacuum AC contactors (321) are connected to the movement (1) and the control system (4) via the secondary circuit copper busbar (322); Under the control of the control system (4), the main circuit component (31) monitors the state of each magnetic field in the three-phase magnetic field in real time, and controls the size of each phase magnetic field through the secondary circuit component (32), thereby balancing the three-phase current in real time, thereby ensuring the stability and reliability of the device.

7. The intelligent power-saving protection device according to claim 6, characterized in that: The control system (4) comprises a control panel, a power monitoring module, a switch (41) and a display module (42), wherein: The switch (41) comprises a gear switch and a knob switch for adjusting the mains power and the energy-saving circuit; The display module (42) comprises a display screen, a power indicator light, a power saving indicator light and a bypass indicator light, through which power data and power saving conditions can be viewed in real time, and real-time regulation can be performed as required; The control system (4) remotely monitors various data through the power monitoring module, obtains power data in real time, and realizes one-button seamless switching between power saving and mains power through a knob switch.

8. The intelligent power-saving protection device according to claim 5, characterized in that: The control system includes closing, energy storage, and opening indicator lights, corresponding buttons and knob switches, to realize line switching, and to disconnect the circuit for protection when a fault occurs in the power equipment or line; and to monitor the power quality of the power grid in real time according to the power monitoring module and the battery cell operation data, and to adjust the gear switch in real time, so that the entire energy-saving system works under the minimum loss condition, achieving the best energy-saving effect; At the same time, the control system monitors the quality of the power grid and the working status of the energy-saving system. When a power grid failure occurs, the power supply circuit is immediately cut off and an alarm message is sent to the superior system. When the energy-saving system fails, the bypass switch is immediately activated to bypass the energy-saving system, and the power supply system is not affected.

9. The intelligent power-saving protection device according to claim 5, characterized in that: The device further comprises a heat dissipation device (5), wherein the heat dissipation device (5) is arranged at the bottom of the cabinet (2), and the heat dissipation device (5) is connected to the control system (4).

10. The intelligent power-saving protection device according to claim 5, characterized in that: The high and low coil windings (12) of the movement (1) are cross-connected using two or more sets of windings, including a main winding and a compensation winding, wherein: The main winding has the overall reactance characteristic of "low pass and high resistance", which offsets or absorbs the high-order harmonics and currents of each phase and converts them into magnetic energy; The compensation winding converts the magnetic energy converted by the main winding into current to compensate the load end.

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