CN212412438U - Multi-loop intelligent control circuit, multi-loop intelligent control terminal and power distribution cabinet - Google Patents
Multi-loop intelligent control circuit, multi-loop intelligent control terminal and power distribution cabinet Download PDFInfo
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- CN212412438U CN212412438U CN201921418650.2U CN201921418650U CN212412438U CN 212412438 U CN212412438 U CN 212412438U CN 201921418650 U CN201921418650 U CN 201921418650U CN 212412438 U CN212412438 U CN 212412438U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The utility model provides a multiloop intelligent control circuit, multiloop intelligent control terminal and switch board, wherein unit and CPU data transmission are put to multiloop intelligent control circuit's fortune, and communication unit and CPU communication connection, communication unit, CPU, fortune are put the unit and all are connected with electrical unit and are supplied power by electrical unit, and multichannel electric current sampling unit, ABC three-phase voltage sampling unit all put the unit electricity with fortune and are connected, and the multiple switch volume input unit is connected with CPU. The utility model has the advantages that: simple structure, reasonable in design, the setting of switch butt joint socket, switch installation mouth makes things convenient for the installation of switch, through the detection function that the setting of voltage acquisition interface realized the return circuit, can satisfy the nimble changeable service environment in scene, can make up the detection in the random selection return circuit, and it is convenient to maintain and reform transform when load or operation requirement change, is suitable for block terminal or the switch board that has more return circuits to use.
Description
Technical Field
The utility model belongs to the technical field of the block terminal, concretely relates to multi-loop intelligent control circuit, multi-loop intelligent control terminal and switch board.
Background
The traditional distribution box has no detection function or only has the detection function of a specific loop, the flexible and changeable use environment of a field cannot be met, the loop cannot be randomly selected for combination detection, the maintainability and the reconstruction performance are not realized when the load or the use requirement is changed, particularly, the distribution box with more loops is difficult to upgrade and reconstruct, and the upgrade and maintenance cost is high.
In the face of complicated various distribution parameter sampling demands, original simple and easy distribution parameter monitoring control system of independent operation is gradually eliminated, present distribution parameter monitoring control system develops towards the direction of many sampling return circuits, multi-parameter kind, high integration gradually, and people are to multi-functional, small-size and the distribution parameter monitoring control system's that the detection return circuit can add as required, reduce demand greatly increased.
The patent application number CN201710985965.4 discloses a power distribution parameter monitoring control system and a control method, and comprises a human-computer interaction unit; the real-time control unit is used for realizing monitoring information processing, recording and alarm control; the electric parameter acquisition unit is used for realizing data sampling analysis of the incoming line loop and each outgoing line loop of the power distribution system; the human-computer interaction unit and the real-time control unit are connected by an RS485 bus to realize data communication; the real-time control unit and the electrical parameter acquisition unit are connected by adopting an SPI bus to realize the technical scheme of data communication, so that the power distribution parameter monitoring control system has a simple communication structure, good expansibility and strong anti-interference performance in an industrial field, ensures the accuracy and reliability of electrical parameter monitoring, does not have a monitoring function on the opening and closing state of a circuit breaker on a loop, and cannot realize opening and closing control on the circuit breaker on the loop, namely only acquisition information is realized, but loop editing and control cannot be carried out according to actual needs in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art, a multiloop intelligent control circuit is provided, multiloop intelligent control terminal and switch board, the switch docks the socket, the setting of switch installation mouth, make things convenient for the installation of switch structure, through switch butt joint socket, the electric current in the corresponding return circuit of switch structure is realized in setting up of voltage acquisition interface, electric quantity, the voltage detection function, can satisfy the nimble changeable service environment in scene, can the random selection return circuit make up the detection, it is convenient to maintain and reform transform when load or operation requirement change, the block terminal that is suitable for there are more loops uses.
In order to achieve the above object, the embodiment of the utility model provides a multiloop intelligent control circuit, put the unit including communication unit, CPU, fortune put the unit with CPU data transmission connects, the communication unit with CPU communication connection, the communication unit CPU fortune put the unit all with the electrical unit connection and by the electrical unit power supply, its characterized in that still includes multichannel current sampling unit, ABC three-phase voltage sampling unit, multi-way switching value input unit, multichannel current sampling unit ABC three-phase voltage sampling unit all with fortune is put the unit electricity and is connected, multi-way switching value input unit with CPU connects.
Preferably, the multi-path shunt opening tripping control device further comprises a multi-path shunt opening switch control unit and a multi-path shunt opening switch control unit, wherein the multi-path shunt opening tripping control unit and the multi-path shunt opening switch control unit are electrically connected with the CPU;
further, the communication unit is in communication connection with the upper computer and/or the switch structure;
preferably, the multi-path current sampling unit is in data transmission connection with an AD sampling interface of the CPU through the operational amplifier unit;
the ABC three-phase voltage sampling unit is in data transmission connection with the AD sampling interface of the CPU through the operational amplifier unit;
and the multi-way switching value input unit is connected with an IO interface connected with the CPU.
Preferably, the CPU is connected to the multi-path shunt tripping control unit through an IO interface;
the CPU is connected with the multi-path switching-on/off switch control unit through an IO interface;
furthermore, the multi-path current sampling unit, the ABC three-phase voltage sampling unit, the multi-path switching value input unit, the multi-path shunt tripping control unit and the multi-path opening and closing switch control unit all adopt 12-path structures to acquire or control electricity utilization parameters, and the 12-path structures comprise 4 three-phase alternating-current loops.
The multi-loop intelligent control terminal comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell and a lower shell, the upper shell and the lower shell are connected to form a cavity, and the multi-loop intelligent control terminal is characterized by also comprising a multi-loop intelligent control circuit, and the multi-loop intelligent control circuit is arranged in the cavity;
preferably, the lower shell and the upper shell are detachably connected, and the upper shell is provided with a switch butt joint socket, a voltage acquisition interface, a switch installation port, a DC24V interface, a communication interface and a debugging interface;
the multi-path current sampling unit is electrically connected with the switch structure through the switch butt joint socket and is used for collecting current and electric quantity parameters;
the ABC three-phase voltage sampling unit is electrically connected with the switch structure through the voltage acquisition interface and acquires current and voltage parameters;
the multi-loop control unit is mechanically connected with the switch structure through a switch mounting port;
the power supply unit is connected with the multi-loop intelligent control circuit through the DC24V interface and supplies power;
the debugging interface is connected with the multi-loop intelligent control circuit and is used for debugging loop parameters.
Preferably, the upper shell comprises a top plate and a side wall, the side wall is perpendicular to the top plate, the top plate is provided with at least one switch docking socket and a switch mounting port, and the side wall is provided with the voltage acquisition interface, the DC24V interface, the communication interface and the debugging interface.
Preferably, a plurality of the switch docking sockets form a switch docking interface group, the switch mounting ports are respectively arranged on two sides of the switch docking socket group in two groups, and the switch docking socket group is arranged in the middle of the top plate;
or a plurality of the switch butt joint sockets form a switch butt joint interface group, the switch mounting port forms a switch mounting port group, and the switch butt joint interface group and the switch mounting port group are respectively arranged on two sides of the top plate.
Preferably, the multi-loop intelligent control terminal is connected with at least one switch structure, and the loop intelligent control terminal collects and monitors the switch structure and controls the switch structure.
The power distribution cabinet is characterized by comprising a multi-loop intelligent control terminal, a human-computer interaction interface is arranged on the power distribution cabinet, the human-computer interaction interface is in communication connection with the multi-loop intelligent control terminal, the power distribution cabinet further comprises an upper computer, the upper computer is in communication connection with the multi-loop intelligent control terminal, loop configuration parameters are set through the human-computer interaction interface or the upper computer, and the loop configuration parameters are issued to the multi-loop intelligent control terminal, so that the dynamic monitoring requirements of the site on loops are met under the condition that the power distribution cabinet and any devices and lines inside the power distribution cabinet are not changed.
The utility model has the advantages that: the multi-loop intelligent control terminal is simple in structure and reasonable in design, and comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell and a lower shell, the upper shell and the lower shell are connected to form a cavity, and a multi-loop intelligent control circuit is arranged in the cavity; the multi-loop intelligent control circuit realizes the monitoring function of the voltage, the current, the electric quantity and the opening and closing state of the circuit breaker of the multi-path outgoing line loop; the realization is to a plurality of circuit breaker's that are qualified for the next round of competitions divide-shut brake control function, the switch docks the socket, the setting of switch installation mouth, make things convenient for the installation of switch structure, through switch butt joint socket, the current, the electric quantity, the voltage detection function in the corresponding return circuit of switch structure is realized in setting up of voltage acquisition interface, can satisfy the nimble changeable service environment in scene, can make up the detection in the random selection return circuit, it is convenient to maintain and reform transform when load or operation requirement change, the block terminal or the switch board that are suitable for there are more return circuits uses.
Drawings
Fig. 1 is a circuit block diagram of a multi-loop intelligent control circuit according to embodiment 1 of the present invention;
fig. 2 is a circuit block diagram of a multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 3 is a circuit diagram of a communication unit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 4 is a circuit diagram of a multi-path current sampling unit terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 5 is a circuit diagram of ABC three-phase voltage sampling unit terminals of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 6 is a circuit diagram of a power supply unit terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 7 is a circuit diagram of a debug terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 8 is a circuit diagram of a shunt tripping control subunit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 9 is a circuit diagram of a switching-on/off control subunit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention;
fig. 10 is a front view of a multi-loop intelligent control terminal according to embodiment 3 of the present invention;
fig. 11 is a left side view of the multi-loop intelligent control terminal according to embodiment 3 of the present invention;
fig. 12 is a front view of a multi-loop intelligent control terminal according to embodiment 4 of the present invention;
fig. 13 is a front view of the multi-loop intelligent control terminal according to embodiment 5 of the present invention;
fig. 14 is a perspective view of an upper case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention;
fig. 15 is a left side view of an upper case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention;
fig. 16 is a perspective view of a lower case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention;
fig. 17 is a block diagram of a power distribution cabinet according to embodiment 7 of the present invention;
fig. 18 is a flowchart of a multi-loop power distribution control method based on a power distribution cabinet according to embodiment 7 of the present invention.
In the drawings: 1. inferior valve, 11, upper junction plate, 12, lower junction plate, 2, upper casing, 21, roof, 22, lateral wall, 3, voltage acquisition interface, 4, DC24V interface, 5, communication interface, 6, debugging interface, 7, switch installing port, 8, switch butt joint socket, 9, connecting hole, 10, switch board, 101, multiloop intelligent control terminal, 102, return circuit intelligent control circuit, 103, human-computer interaction interface, 104, host computer.
Detailed Description
The following describes the rail clamping device of the present invention in detail with reference to the accompanying drawings.
Example 1
Fig. 1 shows a block diagram of the multi-loop intelligent control circuit of the present invention. The multi-loop intelligent control circuit comprises a communication unit, a CPU (central processing unit) and an operational amplifier unit, wherein the communication unit, the CPU and the operational amplifier unit are electrically connected, and the multi-loop intelligent control circuit also comprises a multi-path current sampling unit, an ABC three-phase voltage sampling unit and a multi-path switching value input unit, wherein the multi-path current sampling unit and the ABC three-phase voltage sampling unit are electrically connected with the operational amplifier unit, and the multi-path switching value input unit is connected with the CPU.
The communication unit, the CPU and the operational amplifier unit are all connected with the power supply unit and are powered by the power supply unit.
The loop parameter acquisition method of the multi-loop intelligent control circuit comprises the following steps:
(1) the multi-path current sampling unit comprises a plurality of paths of current transformers and sampling resistors which are connected in series, current signals of all outgoing line loops are converted into voltage signals through the current transformers and the sampling resistors of all paths, the voltage signals are input to an AD sampling interface of the CPU through the filtering and operational amplifier unit, and parameters of current and electric quantity of all the loops are collected and output to the CPU.
(2) The ABC three-phase voltage sampling unit collects A, B, C three-phase voltage signals, A, B, C three-phase voltage signals input by the BC three-phase voltage sampling unit are converted into mV-level voltage signals through a sampling resistor, the voltage signals are input to an AD sampling interface of the CPU through an RC filtering and operational amplifier unit, and voltage parameters of each loop are collected and output to the CPU.
(3) Auxiliary contacts of the circuit breakers on each loop are respectively connected into 12 multi-path switching value input units, and the multi-path switching value input units adopt optical couplers to isolate signals and then input the signals into an IO port of a CPU (central processing unit) to monitor the opening and closing states of the circuit breakers on each loop.
Example 2
Fig. 2 is a circuit block diagram of a multi-loop intelligent control circuit according to embodiment 2 of the present invention. The multi-loop intelligent control circuit comprises a communication unit, a CPU (Central processing Unit) and an operational amplifier unit, wherein the communication unit, the CPU and the operational amplifier unit are electrically connected, a power supply unit is connected with the communication unit, the CPU and the operational amplifier unit and supplies power, and the multi-loop intelligent control circuit also comprises a multi-path current sampling unit, an ABC three-phase voltage sampling unit, a multi-path switching value input unit, a multi-path shunt tripping control unit and a multi-path switching-on and switching-off switch control unit, wherein the multi-path current sampling unit, the ABC three-phase voltage sampling unit and the multi-path switching value input unit are all electrically connected with the; the multi-path shunt opening tripping control unit and the multi-path opening and closing switch control unit are electrically connected with the CPU; the communication unit is in communication connection with the upper computer and/or the switch structure.
The multi-path current sampling unit is in data transmission connection with an AD sampling interface of the CPU through the operational amplifier unit; the ABC three-phase voltage sampling unit is in data transmission connection with an AD sampling interface of the CPU through the operational amplifier unit; the multi-path switching value input unit is connected with an IO interface of the CPU, and the CPU is connected with the multi-path shunt tripping control unit through the IO interface; CPU passes through the IO interface and is connected with multichannel divide-shut brake switch control unit, multichannel current sampling unit, ABC three phase voltage sampling unit, multichannel switching value input unit all adopt 12 circuit structures 12 current sampling unit, 12 way ABC three phase voltage sampling unit, 12 way switching value input unit for gather power consumption parameter such as voltage, electric current, electric quantity and circuit breaker divide-shut brake state, 12 circuit structures include 4 three-phase alternating current return circuits, generally with the return circuit that needs 1P, 2P, 3P, 4P, 12 is the common multiple of 1, 2, 3, 4, make things convenient for the multiloop to edit, satisfy on-the-spot power consumption needs.
The CPU employs STM32F407VGT 6. The communication unit adopts ADM2483 BRWZ.
Fig. 3 is a circuit diagram of a communication unit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention. The communication unit terminal in FIG. 3 is C4201WR-F-2X 3P. The communication unit adopts one or more of a 485 communication interface, a 232 communication interface, a communication interface in CAN and a 422 communication interface.
Fig. 4 is a circuit diagram of a multi-path current sampling unit terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention; the multi-path current sampling unit terminal adopts OUPIN _10F, the multi-path current sampling unit terminal is connected with the acquisition multi-path current sampling unit and the switch mechanism, and acquires power utilization parameters, wherein the acquisition power utilization parameters comprise 10 pins, wherein a pin I1_ A is connected with a current transformer in the multi-path current sampling unit, a pin I1_ B is connected with the current transformer in the multi-path current sampling unit, a pin SIN1 is connected with a normally closed auxiliary contact of a circuit breaker in the switch mechanism and leakage protection tripping control, a pin STATE _1 is connected with a normally closed auxiliary contact of a contactor in the switch mechanism, a pin TRIPO _1 is connected with a circuit breaker shunt tripping control in the switch mechanism, a pin +24VF is connected with a circuit breaker shunt tripping + a circuit breaker auxiliary contact common point and a contactor auxiliary contact common point in the switch mechanism, a pin PGND is connected with a leakage protection ground in the switch mechanism, the CONTROL1A and CONTROL1B pins are connected with the CONTROL of the contactor in the switch mechanism.
Fig. 5 is a circuit diagram of ABC three-phase voltage sampling unit terminals of the multi-loop intelligent control circuit according to embodiment 2 of the present invention; the ABC three-phase voltage sampling unit terminal adopts C5701WR-2X 2P.
Fig. 6 is a circuit diagram of a power supply unit terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention; the power supply unit adopts C4201WR-F-2X 2P.
Fig. 7 is a circuit diagram of a debugging unit terminal of the multi-loop intelligent control circuit according to embodiment 2 of the present invention; the debugging unit terminal adopts C3030WR-2X 2P. The multi-loop intelligent control circuit also comprises a debugging unit, and the debugging unit is connected with the CPU to realize the debugging of the multi-loop intelligent control circuit.
The power supply unit, the communication unit, the CPU and the operational amplifier unit are all made of existing products, the multi-path current sampling unit, the ABC three-phase voltage sampling unit and the multi-path switching value input unit are all made of existing products, and the power utilization parameters such as voltage, current and electric quantity and the opening and closing state of the circuit breaker can be achieved.
Fig. 8 is a circuit diagram of a shunt tripping control subunit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention. The 12-path shunt tripping control unit comprises 12 shunt tripping control subunits which are parallel, shunt tripping of a 12-path circuit breaker is respectively connected into the 12-path shunt tripping control subunits, the shunt tripping control subunits adopt on-off of an MOS (IR8721) tube shunt power supply, and an IO port of a CPU controls on-off of the MOS tube after optical coupling isolation, so that shunt of the circuit breaker is realized; specifically, high or low level is input through an IO port of a CPU, and the on-off of an MOS tube is controlled after optical coupling isolation, so that shunt excitation of the circuit breaker is realized;
fig. 9 is a circuit diagram of an opening/closing control subunit of the multi-loop intelligent control circuit according to embodiment 2 of the present invention. The 12-path switching-on/off control unit comprises 12 parallel 12-path switching-on/off control subunits, an IO port of the CPU drives a relay through a triode, and the switching-on/off of an output contact of the relay controls the switching-on/off of a switching-on/off coil of the circuit breaker so as to realize the switching-off and switching-on of the circuit breaker;
the loop parameter acquisition and loop control method of the multi-loop intelligent control circuit comprises the following steps:
(1) the 12 paths of current sampling units comprise 12 paths of current transformers and sampling resistors which are connected in series, current signals of 12 outgoing line loops are converted into voltage signals through the 12 current transformers and the sampling resistors, the voltage signals are input to an AD sampling interface of the CPU through the filtering and operational amplifier units, and parameters of current and electric quantity of each loop are output to the CPU;
(2) the ABC three-phase voltage sampling unit acquires A, B, C three-phase voltage signals, A, B, C three-phase voltage signals input by the ABC three-phase voltage sampling unit are converted into mV-level voltage signals through a sampling resistor, the voltage signals are input to an AD sampling interface of the CPU through an RC (resistor-capacitor) filtering and operational amplifier unit, and voltage parameters of each loop are acquired and output to the CPU;
(3) auxiliary contacts of 12 circuits of circuit breakers are respectively connected into a multi-way switching value input unit, and the multi-way switching value input unit adopts an optical coupler to isolate signals and then inputs the signals into an IO port of a CPU (central processing unit) so as to realize monitoring of the opening and closing states of the circuit breakers on each circuit;
(4) shunt release of the 12-path circuit breaker is respectively connected into the 12-path shunt release control units, the multi-path shunt release control units adopt on-off of MOS (IR8721) tube shunt power supplies, and the IO port of a CPU controls on-off of MOS tubes after optical coupling isolation, so that shunt of the circuit breaker is realized;
(5) the opening and closing coils of the 12-path circuit breaker are respectively connected with the 12-path opening and closing control unit, the IO port of the CPU drives the relay through the triode, and the opening and closing of the output contact of the relay controls the opening and closing coils of the circuit breaker to be powered on and powered off, so that the opening and closing of the circuit breaker are realized;
example 3
Fig. 10 is a schematic structural diagram of a multi-loop intelligent control terminal according to embodiment 3 of the present invention. Fig. 11 is a left side view of the multi-loop intelligent control terminal according to embodiment 3 of the present invention. The multi-loop intelligent control terminal comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell 2 and a lower shell 1, the upper shell 2 and the lower shell 1 are connected to form a cavity, and a multi-loop intelligent control circuit is arranged in the cavity through a circuit board;
the lower shell 1 and the upper shell 2 are detachably connected, and the upper shell 2 is provided with a switch butt joint socket 8, a voltage acquisition interface 3, a switch installation port 7, a DC24V interface 4, a communication interface 5 and a debugging interface 6;
the voltage acquisition interface 3 is an ABC three-phase voltage sampling unit terminal opening for accommodating the multi-loop intelligent control circuit;
the DC24V interface 4 is an opening for accommodating the power supply unit terminal of the multi-loop intelligent control circuit;
the communication interface 5 is an opening for accommodating a communication unit terminal of the multi-loop intelligent control circuit;
the debugging interface 6 is an opening for accommodating a debugging terminal of the multi-loop intelligent control circuit;
the switch butt socket 8 is an opening for accommodating a current sampling unit terminal of the multi-loop intelligent control circuit.
The multi-path current sampling unit is electrically connected with the switch structure through the switch butt joint socket 8 and collects current and electric quantity parameters;
the ABC three-phase voltage sampling unit is electrically connected with the switch structure through a voltage acquisition interface 3 and acquires current and voltage parameters;
the multi-loop control unit is mechanically connected with the switch structure through a switch mounting port 7;
the power supply unit is connected with the multi-loop intelligent control circuit through a DC24V interface 4 and supplies power;
the debugging interface 6 is connected with the multi-loop intelligent control circuit and debugs loop parameters.
The upper shell 2 comprises a top plate 21 and a side wall 22, the side wall 22 is perpendicular to the top plate 21, the top plate 21 is provided with at least one switch butt joint socket 8 and a switch mounting port 7, and the side wall 22 is provided with a voltage acquisition interface 3, a DC24V interface 4, a communication interface 5 and a debugging interface 6.
The switch butt joint jacks form switch butt joint jack groups, the switch mounting ports 7 are divided into two groups and are respectively arranged on two sides of the switch butt joint jack 8 groups, and the switch butt joint jack 8 groups are arranged in the middle of the top plate; the middle of the corresponding switch structure is provided with an interface corresponding to the switch opposite-insertion interface, the interface of the switch structure is in butt joint with the switch opposite-insertion interface to realize mechanical connection and electric connection, the auxiliary fixing effect is achieved, the two sides of the switch structure are symmetrically provided with insertion fixing pieces, the insertion fixing pieces are inserted into the switch mounting openings 7 and locked, and the switch structure and the multi-loop intelligent control terminal are guaranteed to be firmly mounted.
The number of 7 switch mounting ports of each switch mounting port group is larger than the number of 8 switch docking ports of each switch docking port group 8.
The insertion fixing piece comprises two symmetrical sub-insertion fixing pieces, the sub-insertion fixing pieces corresponding to adjacent switch structures share one switch installation port 7, and the number of switch installation ports 7 of each switch installation port is one more than that of switch butt joint jacks 8 of each switch butt joint jack group.
The multi-loop intelligent control terminal is connected with at least one switch structure, and the loop intelligent control terminal collects and monitors the switch structure and controls the switch structure.
The communication interface 5 of the communication unit adopts one or a combination of more than one of 485 communication interfaces 5, 232 communication interfaces 5 and 422 communication interfaces 5 in CAN.
The DC24V interface 4 may also be replaced with other power interfaces.
Example 4
Fig. 12 is a schematic structural diagram of a multi-loop intelligent control terminal according to embodiment 4 of the present invention. The method is the same as the embodiment 3 except that the following technical scheme is different:
a single plug-in fixture comprising only one sub-plug-in fixture requires that each switch mounting 7 group of switches be fitted with a number of switch docking sockets 8 equal to each switch docking socket group.
The number of the switch mounting ports 7 of each switch mounting port group is larger than the number of the switch docking sockets 8 of each switch docking socket group.
Example 5
Fig. 13 is a schematic structural diagram of a multi-loop intelligent control terminal according to embodiment 5 of the present invention. The multi-loop intelligent control terminal comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell 2 and a lower shell 1, the upper shell 2 and the lower shell 1 are connected to form a cavity, and a multi-loop intelligent control circuit is arranged in the cavity;
the lower shell 1 and the upper shell 2 are detachably connected, and the upper shell 2 is provided with a switch butt joint socket 8, a voltage acquisition interface 3, a switch installation port 7, a DC24V interface 4, a communication interface 5 and a debugging interface 6;
the multi-path current sampling unit is electrically connected with the switch structure through the switch butt joint socket 8 and collects current and electric quantity parameters;
the ABC three-phase voltage sampling unit is electrically connected with the switch structure through a voltage acquisition interface 3 and acquires current and voltage parameters;
the multi-loop control unit is mechanically connected with the switch structure through a switch mounting port 7;
the power supply unit is connected with the multi-loop intelligent control circuit through a DC24V interface 4 and supplies power;
the debugging interface 6 is connected with the multi-loop intelligent control circuit and debugs loop parameters.
The upper shell 2 comprises a top plate 21 and a side wall 22, the side wall is perpendicular to the top plate, the top plate is provided with at least one switch butt joint socket 8 and a switch mounting port 7, and the side wall 22 is provided with a voltage acquisition interface 3, a DC24V interface 4, a communication interface 5 and a debugging interface 6. The voltage acquisition interface 3, the DC24V interface 4, the communication interface 5 and the debugging interface 6 may be on the same side wall 22 or on the opposite side wall 22.
The switch butt joint socket forms the switch and inserts the interface group to, and switch installing port 7 forms switch installing port 7 groups, and the switch is inserted interface group, 7 groups of switch installing port and is set up respectively in the roof both sides.
The corresponding switch structure one side sets up and the corresponding interface of switch to inserting the interface, and the interface of switch structure and switch are to inserting the interface butt joint and realize mechanical connection and electricity and be connected, form supplementary fixed point, have played supplementary fixed effect, and the switch structure opposite side sets up and inserts the mounting, inserts mounting opening 7 and locking formation fixed point of mounting, and supplementary fixed point and fixed point cooperation are guaranteed switch structure and multiloop intelligent control terminal firm in installation.
The multi-loop intelligent control terminal is connected with at least one switch structure, and the loop intelligent control terminal collects and monitors the switch structure and controls the switch structure.
Example 6
Besides the technical solutions of embodiments 3 to 5, the following technical solutions are also included:
fig. 14 is a perspective view of an upper case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention, fig. 15 is a left side view of the upper case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention, and fig. 16 is a perspective view of a lower case of the multi-loop intelligent control terminal according to embodiment 6 of the present invention;
the lower shell 1 comprises an upper connecting plate 11 and a lower connecting plate 12, wherein the upper connecting plate 11 is positioned at two sides of the lower connecting plate 12, and the upper connecting plate 11 is vertical to the lower connecting plate 12;
the side wall 22 of the upper shell 2 is detachably connected with the upper connecting plate 11; specifically, the method comprises the following steps: lateral wall 22 of epitheca 2 corresponds the position with the upper junction plate 11 of inferior valve 1 and sets up connecting hole 9, and detachable construction is screw or bolt, and lateral wall 22 inserts connecting hole 9 with upper junction plate 11 through screw or bolt and is connected, realizes inferior valve 1 and inferior valve 2's connection, and overall structure is simple, and easy dismouting is realized. The voltage acquisition interface 3, the DC24V interface 4, the communication interface 5 and the debugging interface 6 can be arranged on the side wall 22 on the same side, and the communication interface 5 and the debugging interface 6 are communicated, so that connection and debugging are facilitated.
The both sides of the lower connecting plate 12 of inferior valve 1 set up cabinet body connecting hole 13, and the switch board relevant position also is provided with the connecting hole, and the connection of inferior valve 1 and switch board is realized to cabinet body connecting hole 13 and the interior screw in screw of connecting hole or bolt, and then realizes the mechanical connection of multiloop intelligent control terminal 10 and switch board.
The top plate 21 of the upper shell 2 is further provided with a circuit board fixing hole 23, a connecting hole is also formed in the corresponding position of the circuit board, the circuit board fixing hole 23 protrudes out of the lower surface of the top plate 21, a screw or a bolt is screwed into the circuit board fixing hole 23 and the connecting hole to achieve connection of the circuit board and the upper shell 2, the circuit board is provided with the multi-loop intelligent control circuit 102, and accordingly hardware of the multi-loop intelligent control circuit and the multi-loop intelligent control terminal are fixed.
Example 7
Fig. 17 is a block diagram of a power distribution cabinet according to embodiment 7 of the present invention. The power distribution cabinet 10 with the multi-loop intelligent control terminal is characterized in that a multi-loop intelligent control circuit 102 is arranged in the multi-loop intelligent control terminal 101, a man-machine interaction interface 103 is further arranged on the power distribution cabinet 10, the man-machine interaction interface 103 is in communication connection with the multi-loop intelligent control terminal 102, the power distribution cabinet further comprises an upper computer 104, the upper computer 104 is also in communication connection with the multi-loop intelligent control terminal 101, and loop configuration parameters are set through the man-machine interaction interface 103 or the upper computer 104.
A multi-loop power distribution control method based on single circuit records and stores the data of all loops, when it is used on site, the characteristic value of any circuit can be regulated according to the site condition through the man-machine interface, such as which phase and several lines are monitored to form single-phase/three-phase/single-phase/three-phase leakage switch, etc, the branch excitation and auxiliary control is to which circuit and which circuit is leakage switch, then the configuration parameter is sent to the intelligent terminal, the intelligent terminal automatically combines the data and information of each circuit to form the visual data, such as voltage, current/leakage current, power, electric quantity, power factor, etc. which the user wants to know and know, and realizes the intelligent control and state monitoring of each compound switch, thereby under the condition of not changing any device and circuit in the case and the inner part, the dynamic monitoring requirement of each loop on site is really met.
The human-computer interaction interface and the upper computer use the default loop parameter configuration in the multi-loop intelligent control terminal before configuration, if the configuration is inconsistent with the field use condition, a certain loop can be changed, the loop can be added again after a certain loop is directly deleted, or the loop is re-entered after all the loops are deleted, and a user can select different loop adding methods according to the field condition.
Fig. 18 is a flowchart of a multi-loop power distribution control method based on a power distribution cabinet according to embodiment 7 of the present invention. The multi-loop power distribution control method based on the power distribution cabinet specifically operates as follows:
1. the intelligent acquisition terminal acquires the power consumption data of all lines in real time, and performs data statistics and storage.
2. And when no new loop parameter is set, the intelligent terminal uses the default loop configuration parameter or the last previous loop configuration parameter to combine and calculate the collected electricity utilization data, and the measurement result is displayed on an upper computer or a human-computer interaction interface.
3. When the field power utilization environment changes, the configuration parameters of the loops can be added and changed again on the human-computer interaction interface and the upper computer, a certain loop can be modified independently, a loop can be added again after a certain loop is deleted directly, or the configuration parameters are recorded again after all the loops are deleted.
4. And after the human-computer interaction interface and the upper computer are edited again, the new loop parameters are issued to the intelligent terminal, the intelligent terminal initializes the loop parameter setting values again, new data are combined according to the new parameters at the moment, and the measurement results are displayed on the upper computer or the human-computer interaction interface.
Example 8
The power distribution cabinet 10 with the multi-loop intelligent control terminal is characterized in that the multi-loop intelligent control circuit 102 is arranged in the multi-loop intelligent control terminal 101, a man-machine interaction interface 103 is further arranged on the power distribution cabinet 10, the man-machine interaction interface 103 is in communication connection with the loop intelligent control terminal 102, the power distribution cabinet further comprises an upper computer 104, the upper computer 104 is also in communication connection with the loop intelligent control terminal 101, loop configuration parameters are set through the man-machine interaction interface 103 or the upper computer 104, and are issued to the multi-loop intelligent control terminal 101, and the requirements of dynamic monitoring and control of loops on site are met under the condition that the power distribution cabinet 10 and any internal devices and lines are not changed.
A multi-loop power distribution control method based on a power distribution cabinet specifically comprises the following steps that a multi-loop intelligent control terminal is connected with a switch structure group to realize loop intelligent dynamic monitoring and control, the multi-loop intelligent control terminal is in communication connection with an upper computer through a man-machine interaction interface, loop configuration parameters are set through a man-machine interaction interface, the loop configuration parameters are issued to the multi-loop intelligent control terminal, and the dynamic monitoring and control requirements of a site on loops are met under the condition that the power distribution cabinet, any internal devices and lines are not changed, and the method specifically comprises the following steps:
step 1: the multi-loop intelligent control terminal collects power consumption data of all loops in real time;
the electric data of all the loops in the step 1 is the result of recording and storing the electricity utilization parameters of the used loops, wherein the electricity utilization parameters comprise one or more combinations of voltage, current/leakage current, power, electric quantity and power factor.
The method for acquiring the electricity utilization data of all loops in real time by the multi-loop intelligent control terminal comprises the following steps:
(1) the 12 paths of current sampling units comprise 12 paths of current transformers and sampling resistors which are connected in series, current signals of 12 outgoing line loops are converted into voltage signals through the 12 current transformers and the sampling resistors, the voltage signals are input to an AD sampling interface of the CPU through the filtering and operational amplifier units, and parameters of current and electric quantity of each loop are output to the CPU;
(2) the ABC three-phase voltage sampling unit acquires A, B, C three-phase voltage signals, A, B, C three-phase voltage signals input by the ABC three-phase voltage sampling unit are converted into mV-level voltage signals through a sampling resistor, the voltage signals are input to an AD sampling interface of the CPU through an RC (resistor-capacitor) filtering and operational amplifier unit, and voltage parameters of each loop are acquired and output to the CPU;
(3) auxiliary contacts of 12 circuits of circuit breakers are respectively connected into a multi-way switching value input unit, and the multi-way switching value input unit adopts an optical coupler to isolate signals and then inputs the signals into an IO port of a CPU (central processing unit) so as to realize monitoring of the opening and closing states of the circuit breakers on each circuit;
step 2: the multi-loop intelligent control terminal uploads the electricity utilization data to the upper computer and/or the human-computer interaction interface and displays the electricity utilization data on the upper computer and/or the human-computer interaction interface;
and 2, when the electricity utilization data is not set by new loop parameters, the multi-loop intelligent control terminal uses default loop configuration parameters or last previous loop configuration parameters to combine and calculate the collected electricity utilization data.
And step 3: when the field power utilization environment changes, adding and changing the loop configuration parameters again on the human-computer interaction interface and/or the upper computer;
and 3, re-adding and changing the configuration parameters of the loops on the human-computer interaction interface and/or the upper computer to modify a certain loop, re-adding a loop after deleting a certain loop, or re-entering one or more combinations after deleting all loops.
And 4, step 4: and issuing the loop configuration parameters in the steps to a multi-loop intelligent control terminal, re-initializing loop parameter setting values by the multi-loop intelligent control terminal, combining new power utilization data according to the new loop parameters at the moment, displaying the new power utilization data on an upper computer or a human-computer interaction interface, meeting the requirements of on-site dynamic monitoring and control on the loop under the condition of not changing a power distribution cabinet and any internal device and line, and controlling the loop by controlling the shunt excitation of a circuit breaker on the loop, the shunt brake of the circuit breaker and the switch on the circuit breaker.
The loop control method of the multi-loop intelligent control circuit comprises the following steps:
(1) shunt release of the 12-path circuit breaker is respectively connected into the 12-path shunt release control units, the multi-path shunt release control units adopt on-off of MOS (IR8721) tube shunt power supplies, and the IO port of a CPU controls on-off of MOS tubes after optical coupling isolation, so that shunt of the circuit breaker is realized;
(2) the opening and closing coils of the 12-path circuit breaker are respectively connected into the 12-path opening and closing control unit, the IO port of the CPU drives the relay through the triode, and the opening and closing of the output contact of the relay controls the opening and closing coils of the circuit breaker to be powered on and powered off, so that the opening and closing of the circuit breaker are realized.
The step 1 is preceded by a pre-working step, which is a power-on initialization step.
Compared with the prior art, the multi-loop intelligent control terminal is simple in structure and reasonable in design, and comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell and a lower shell, the upper shell and the lower shell are connected to form a cavity, and the multi-loop intelligent control circuit is arranged in the cavity; the multi-loop intelligent control circuit realizes the monitoring function of the voltage, the current, the electric quantity and the opening and closing state of the circuit breaker of the multi-path outgoing line loop; the realization is to a plurality of circuit breaker's that are qualified for the next round of competitions divide-shut brake control function, the switch docks the socket, the setting of switch installation mouth, make things convenient for the installation of switch structure, through switch butt joint socket, the current, the electric quantity, the voltage detection function in the corresponding return circuit of switch structure is realized in setting up of voltage acquisition interface, can satisfy the nimble changeable service environment in scene, can make up the detection in the random selection return circuit, it is convenient to maintain and reform transform when load or operation requirement change, the block terminal or the switch board that are suitable for there are more return circuits uses.
The above embodiments are only examples of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. Multiloop intelligent control circuit, including communication unit, CPU, fortune unit of putting, fortune put the unit with CPU data transmission connects, the communication unit with CPU communication connection, the communication unit CPU fortune put the unit all with the power unit be connected and by the power unit power supply, its characterized in that still includes multichannel current sampling unit, ABC three-phase voltage sampling unit, multichannel switching value input unit, multichannel current sampling unit ABC three-phase voltage sampling unit all with fortune is put the unit electricity and is connected, multichannel switching value input unit with CPU connects.
2. The multi-loop intelligent control circuit according to claim 1, further comprising a multi-path shunt tripping control unit and a multi-path switching-on/off switch control unit, wherein the multi-path shunt tripping control unit and the multi-path switching-on/off switch control unit are electrically connected with the CPU;
further, the communication unit is in communication connection with the upper computer and/or the switch structure.
3. The multi-loop intelligent control circuit of claim 2, wherein the multi-path current sampling unit is in data transmission connection with an AD sampling interface of the CPU through the operational amplifier unit;
the ABC three-phase voltage sampling unit is in data transmission connection with the AD sampling interface of the CPU through the operational amplifier unit;
and the multi-way switching value input unit is connected with an IO interface connected with the CPU.
4. The multi-loop intelligent control circuit according to claim 3, wherein the CPU is connected to the multi-path shunt tripping control unit through an IO interface;
the CPU is connected with the multi-path switching-on/off switch control unit through an IO interface;
furthermore, the multi-path current sampling unit, the ABC three-phase voltage sampling unit, the multi-path switching value input unit, the multi-path shunt tripping control unit and the multi-path opening and closing switch control unit all adopt 12-path structures to acquire or control electricity utilization parameters, and the 12-path structures comprise 4 three-phase alternating-current loops.
5. A multi-loop intelligent control terminal comprises at least one multi-loop control unit, wherein the multi-loop control unit comprises an upper shell and a lower shell, the upper shell and the lower shell are connected to form a cavity, the multi-loop intelligent control terminal is characterized by further comprising a multi-loop intelligent control circuit according to any one of claims 2 to 4, and the multi-loop intelligent control circuit is arranged in the cavity.
6. The multi-loop intelligent control terminal of claim 5, wherein the lower shell and the upper shell are detachably connected, and the upper shell is provided with a switch docking socket, a voltage acquisition interface, a switch mounting port, a DC24V interface, a communication interface and a debugging interface;
the multi-path current sampling unit is electrically connected with the switch structure through the switch butt joint socket and is used for collecting current and electric quantity parameters;
the ABC three-phase voltage sampling unit is electrically connected with the switch structure through the voltage acquisition interface and acquires current and voltage parameters;
the multi-loop control unit is mechanically connected with the switch structure through a switch mounting port;
the power supply unit is connected with the multi-loop intelligent control circuit through the DC24V interface and supplies power;
the debugging interface is connected with the multi-loop intelligent control circuit and is used for debugging loop parameters.
7. The multi-loop intelligent control terminal of claim 6, wherein the upper housing comprises a top plate and a side wall, the side wall is disposed perpendicular to the top plate, the top plate is disposed with at least one switch docking socket and a switch mounting port, and the side wall is disposed with the voltage acquisition interface, the DC24V interface, the communication interface and the debugging interface.
8. The multi-loop intelligent control terminal of claim 7, wherein a plurality of the switch docking sockets form a switch docking interface group, the switch mounting ports are respectively arranged on two sides of the switch docking socket group in two groups, and the switch docking socket group is arranged in the middle of the top plate;
or a plurality of the switch butt joint sockets form a switch butt joint interface group, the switch mounting port forms a switch mounting port group, and the switch butt joint interface group and the switch mounting port group are respectively arranged on two sides of the top plate.
9. The multi-loop intelligent control terminal as claimed in claim 6, wherein the multi-loop intelligent control terminal is connected to at least one of the switch structures, and the loop intelligent control terminal collects, monitors and controls the switch structures.
10. The power distribution cabinet is characterized by comprising the multi-loop intelligent control terminal of any one of claims 5 to 9, a human-computer interaction interface is arranged on the power distribution cabinet and is in communication connection with the multi-loop intelligent control terminal, the power distribution cabinet further comprises an upper computer, the upper computer is in communication connection with the multi-loop intelligent control terminal, loop configuration parameters are set through the human-computer interaction interface or the upper computer, and the loop configuration parameters are issued to the multi-loop intelligent control terminal, so that the dynamic monitoring requirement of a site on loops is met under the condition that the power distribution cabinet and any devices and lines inside the power distribution cabinet are not changed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117054795A (en) * | 2023-10-11 | 2023-11-14 | 深圳浙动机械设备有限公司 | Intelligent distribution box detection system and method based on multi-loop detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117054795A (en) * | 2023-10-11 | 2023-11-14 | 深圳浙动机械设备有限公司 | Intelligent distribution box detection system and method based on multi-loop detection |
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