CN207265666U - The box-like power capacitor of multiloop mixed compensation type smart group - Google Patents
The box-like power capacitor of multiloop mixed compensation type smart group Download PDFInfo
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- CN207265666U CN207265666U CN201720700068.XU CN201720700068U CN207265666U CN 207265666 U CN207265666 U CN 207265666U CN 201720700068 U CN201720700068 U CN 201720700068U CN 207265666 U CN207265666 U CN 207265666U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a kind of box-like power capacitor of multiloop mixed compensation type smart group, including microcontroller and power supply, further include signal acquisition circuit, signal processing circuit, RJ45 joins level interface circuit, RS485 telecommunication circuits, electric capacitor circuit and fling-cut switch control circuit, fling-cut switch control circuit includes the first fling-cut switch circuit group, second fling-cut switch circuit group and the 3rd fling-cut switch circuit group, electric capacitor circuit includes the first condenser network, second condenser network and the 3rd condenser network, first fling-cut switch circuit group includes two simultaneous switching circuits, second fling-cut switch circuit group includes two simultaneous switching circuits and the 3rd fling-cut switch circuit group includes three simultaneous switching circuits.The structure setting of the utility model is reasonable, and switching is safer reliable, and effective to ensure the safe and reliable to operation of capacitor, applicability is good, highly practical.
Description
Technical field
The utility model belongs to low voltage reactive power compensation technical field, and in particular to a kind of multiloop mixed compensation type intelligence
Can Combined type power capacitor.
Background technology
With deepening continuously for upgrade of rural power grids, substantial amounts of JP cabinets (comprehensive distribution box) are applied to rural power line
And in each power distribution station.JP cabinets are designed for the standardization of adaptation countryside low-voltage electric distribution device, miniaturization, the requirement of outdoor type
, it integrates distribution, metering, protection (overload, short circuit, electric leakage, snow defence), capacitance reactive compensation.Since residential electricity consumption is deposited
Underestimate the period in three-phase load unbalance and peak, it is necessary to which capacitance compensation needs to be combined using three-phase and phase splitting compensation mixed
Compensation way is closed, automatic switching capacitance is carried out according to the actual reactive requirement of load conversion.
The reactive power compensation part cabinet of comprehensive distribution box includes earlier：Breaker of plastic casing or switch with knifeshaped fuse, idle work(
The special cut-in and cut-off contactor of rate compensating controller, capacitor or combination switch, low pressure Self-healing power capacitor etc..It exists as follows
Shortcoming：Switching shoves greatly, and the special cut-in and cut-off contactor contact endurance of capacitor is short, and wiring is numerous and diverse, and occupied space is big, and Maintenance and Repair are not
Convenient, of high cost, mechanical connecting element is more, and equipment easily fails.Although combination switch mode switching can reduce switching and shove,
It is complicated there is also wiring, the problems such as intelligence degree is low, defencive function imperfection.
Utility model content
The purpose of this utility model is to provide the multiloop that a kind of structure setting is reasonable, stability in use is good and reliable
The box-like power capacitor of mixed compensation type smart group.
The technical solution for realizing the utility model aim is a kind of box-like electric capacitor of multiloop mixed compensation type smart group
Device, including microcontroller and the power supply that is connected with the microcontroller, further include signal acquisition circuit, signal processing electricity
Road, RJ45 connection levels interface circuit, RS485 telecommunication circuits, electric capacitor circuit and fling-cut switch control circuit, the signal acquisition
Circuit is connected by signal processing circuit with the signal input part of the microcontroller, and the RJ45 connection level interface circuit passes through
RS485 telecommunication circuits are connected realization and the cascade of microcontroller with the microcontroller, the fling-cut switch control circuit bag
Include the first fling-cut switch circuit group, the second fling-cut switch circuit group and the 3rd fling-cut switch circuit group, the electric capacitor circuit
Including the first condenser network, the second condenser network and the 3rd condenser network, first condenser network passes through the first fling-cut switch
Circuit group is connected with microcontroller, and second condenser network is connected by the second fling-cut switch circuit group with microcontroller
Connect, the 3rd condenser network is connected by the 3rd fling-cut switch circuit group with the microcontroller, and first switching is opened
Powered-down road group includes two simultaneous switching circuits, and the second fling-cut switch circuit group includes two simultaneous switching circuits and described
3rd fling-cut switch circuit group includes three simultaneous switching circuits, and the simultaneous switching circuit includes relay driver, first
Resistance, second resistance, 3rd resistor, the 4th resistance, relay, the first photo-coupler, the second photo-coupler, the tenth resistance, fortune
Amplifier, the 14th resistance, the 13rd resistance, the 12nd resistance, the 15th resistance are calculated, two of the relay driver are defeated
Enter pin to connect on a microcontroller with the 4th resistance by 3rd resistor respectively, the output terminal connection of the relay driver
At the relay coil both ends of relay, switch one end of the relay is connected to the hair of the first photo-coupler by first resistor
Light cathode, the other end are connected to the luminous cathode of the second photo-coupler by second resistance, one of first condenser network
Vertex is connected on the switch of relay and the tie point of first resistor, is electrically connected in the switch and second resistance of relay
On tie point, the luminous anode of first photo-coupler be connected to second resistance with the second photo-coupler tie point and second
The luminous anode of photo-coupler is connected on the tie point of first resistor and the first photo-coupler, first photo-coupler and the
Two shine couplers collector by the tenth resistance be connected to operational amplifier+pin on, operational amplifier-pin
5V power supplys are connect by the 12nd resistance eutral grounding, by the 13rd resistance, the output pin of operational amplifier passes through the 15th resistance
On a microcontroller, the 14th resistance is connected between the output pin of operational amplifier and-pin for connection.
First condenser network and the second condenser network are the triangle condenser network being made of three capacitors, described the
Three condenser networks are the Y shape condenser network being made of three capacitors, and a vertex of triangle condenser network is connected to B phases and leads
On line, another two output vertex is connected on two input pins of the first fling-cut switch or the second fling-cut switch, Y shape capacitance electricity
The public vertex on road is connected on N phase conductors and three output points are connected on the input pin of the 3rd fling-cut switch.
The RJ45 connection levels interface circuit includes capacitor cascade port and phase current signal collection port, the capacitor
Cascade port is connected with RS485 telecommunication circuits, and the phase current signal collection port is connected with signal processing circuit.
The signal acquisition circuit includes phase voltage signal Acquisition Circuit and capacitance current punch current transfomer signal acquisition electricity
Road, the phase voltage signal Acquisition Circuit and capacitance current punch current transfomer signal acquisition circuit are connected with signal processing circuit
Connect.
Further include the temperature sensing circuit and control panel being connected with the microcontroller, the temperature sensing circuit bag
Include the negative tempperature coefficient thermistor and resistance of series connection.
The master chip model STM8S207RB of the microcontroller.
The utility model has positive effect：The structure setting of the utility model is reasonable, is installed using combined type, can have
The reduction material of effect and manually installed cost, its switching is safer reliable, smaller to power grid impact, improves to a certain extent
Service life, can effectively ensure the safe and reliable to operation of capacitor, and applicability is good, highly practical, and be communicated using RS485
Mode controls, and the networking of 30 similar products at most can be achieved, and can not have in addition configuration idle compensating control can realize nothing
Work(compensation control control, stability in use is good, strong applicability and practicality is good.
Brief description of the drawings
In order to be more likely to be clearly understood the content of the utility model, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model, wherein：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the physical circuit figure of the simultaneous switching circuit of the utility model；
Fig. 3 is the electric capacitor circuit of the utility model and the connection circuit diagram of fling-cut switch control circuit.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 3 shows a kind of embodiment of the utility model, and wherein Fig. 1 is the structure of the utility model
Block diagram；Fig. 2 is the physical circuit figure of the simultaneous switching circuit of the utility model；Fig. 3 is the electric capacitor circuit of the utility model
With the connection circuit diagram of fling-cut switch control circuit.
See Fig. 1 to Fig. 3, a kind of box-like power capacitor of multiloop mixed compensation type smart group, including microcontroller 1 and with
The power supply 2 that the microcontroller 1 is connected, further includes signal acquisition circuit 3, signal processing circuit 4, RJ45 connection level interfaces
Circuit 5, RS485 telecommunication circuits 6, electric capacitor circuit 7 and fling-cut switch control circuit 8, the signal acquisition circuit 3 pass through
Signal processing circuit 4 is connected with the signal input part of the microcontroller 1, and the RJ45 connection levels interface circuit 5 passes through RS485
Telecommunication circuit 6 is connected realization and the cascade of microcontroller with the microcontroller 1, and the fling-cut switch control circuit 8 includes
The first identical fling-cut switch circuit group 81 of structure, the second fling-cut switch circuit group 82 and the 3rd fling-cut switch circuit group 83, institute
Stating electric capacitor circuit 7 includes the first condenser network 71, the second condenser network 72 and the 3rd condenser network 73, first capacitance
Circuit 71 is connected by the first fling-cut switch circuit 81 with microcontroller 1, and second condenser network 72 passes through the second switching
On-off circuit 82 is connected with microcontroller 1, the 3rd condenser network 73 by the 3rd fling-cut switch circuit 83 with it is described micro-
Controller 1 is connected, and 81 groups of the first fling-cut switch circuit group includes two simultaneous switching circuits, second fling-cut switch
Circuit group includes two simultaneous switching circuits and the 3rd fling-cut switch circuit group includes three simultaneous switching circuits, described same
Walking on-off circuit includes relay driver U1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, relay
Device K1, the first photo-coupler U2, the second photo-coupler U3, the tenth resistance R10, operational amplifier U4, the 14th resistance R14,
13 resistance R13, the 12nd resistance R12, the 15th resistance R15, two input pins difference of the relay driver U1
It is connected to by 3rd resistor R3 and the 4th resistance R4 on microcontroller 1, the output terminal of the relay driver U1 is connected to
The relay coil both ends of relay K1, switch one end of the relay are connected to the first photo-coupler U2 by first resistor R1
Luminous cathode, the other end the luminous cathode of the second photo-coupler U3, the first capacitance electricity are connected to by second resistance R2
One vertex on road 71 is connected on the switch of relay K1 and the tie point of first resistor R1, is electrically connected relay K1's
On the tie point of switch and second resistance R2, the luminous anode of the first photo-coupler U2 is connected to second resistance and the second light
On coupler U3 tie points and the luminous anode of the second photo-coupler is connected to the tie point of first resistor and the first photo-coupler
On, first photo-coupler and the second collector for shining coupler are connected to operational amplifier U4 by the tenth resistance R10
+ pin on, operational amplifier-pin is grounded by the 12nd resistance R12, connects 5V power supplys by the 13rd resistance R13, transport
The output pin for calculating amplifier U4 is connected on microcontroller 1 by the 15th resistance R15, and the 14th resistance R14 is connected to fortune
Between the output pin and-pin of calculating amplifier U4.
First condenser network 71 and the second condenser network 72 are the triangle condenser network being made of three capacitor C,
3rd condenser network 73 is the Y shape condenser network being made of three capacitor C, and a vertex of triangle condenser network connects
It is connected on B phase conductors, another two output vertex is connected on two input pins of the first fling-cut switch or the second fling-cut switch,
The public vertex of Y shape condenser network is connected on N phase conductors and three output points are connected to the input of the 3rd fling-cut switch
On pin.According to three-phase reactive-load compensation demand, it is necessary to three-phase compensate when put into operation " Δ " type connection power capacitor, it is necessary to
A phases, B phases or C phase capacitors can be individually put into during single-phase compensation, realizes that reasonably optimizing compensates.
The RJ45 connection levels interface circuit 5 includes capacitor cascade port 51 and phase current signal collection port 52, described
Capacitor cascade port is connected with RS485 telecommunication circuits, and the phase current signal collection port is connected with signal processing circuit
Connect.
The signal acquisition circuit 3 includes phase voltage signal Acquisition Circuit 31 and capacitance current punch current transfomer signal acquisition
Circuit 32, the phase voltage signal Acquisition Circuit and capacitance current punch current transfomer signal acquisition circuit are and signal processing circuit
It is connected.The measurement of input capacitance current can be accurately realized using capacitance current punch current transfomer signal acquisition circuit, and is judged
Capacitance whether overcurrent undercurrent, determine whether capacity attenuation and damage.
Further include the temperature sensing circuit 9 and control panel 10 being connected with the microcontroller 1, the temperature sensing electricity
Road includes the negative tempperature coefficient thermistor and resistance of series connection.Temperature sensing amplifier unit includes two-way negative temperature coefficient heat-sensitive
Resistance RT, corresponds to two group capacitor temperature respectively, and thermistor RT connects with resistance R and is output to microcontroller after partial pressure.
The master chip model STM8S207RB of the microcontroller.
Master chip model RY8023, U1 input control end INA, INB of simultaneous switching circuit repeat circuit driver points
It is not connected by resistance R3, R4 with power capacitor, receives microcontroller and send vacant cord signal, U1 output terminals OUTA,
OUTB and the coil of magnetic latching relay K1 the 3rd, 4 pins be connected, output signal driving magnetic latching relay closure or disconnect.
The movable contact 1 of magnetic latching relay and stationary contact 2 are respectively by power resistor R1, and end to end the of R2 and optocoupler U2, U3
1st, 2 pins connect, and the 3rd pin of optocoupler U2, U3 is connected and is grounded, the 4th pin of optocoupler U2, U3 be connected by resistance R10 with
The 5th foot of amplifier U4 is connected, and is handled through amplifier and is connected to microcontroller by resistance R15 by the 7th foot output signal of U4, micro-control
By detecting, signal intensity analysis calculates the voltage zero-cross moment at magnetic holding contact both ends to device processed and magnetic latching relay closes
Actuation time during conjunction.Based on the above technical solutions, 8 core cables are realized with RJ45 connection level interface modules and cascaded, and are shared
485 order wires and current signal line, plug easy-to-connect.
Signal processing circuit can use add circuit to voltage and current signal processing, and carry out Full wave shape signal sampling,
Calculate phase voltage value, and can by Fourier transformation calculate harmonic wave, according to calculated value and setting value compare carry out it is over-pressed, under-voltage and
Harmonic protection.
The random of ID generates and carries out automatic network-building, and mixed apotype is preferably host principle, and hostdown automatically exits from, slave
The automatic of address minimum does not influence network service into host, slave failure, and address repeats automatic error-correcting, realizes network control；
Address can be set with manual intervention, be run according to the address of setting；It 0 is host that wherein address, which is, address for others be from
Machine.
Operation panel unit lower part is equipped with Menu key, upwarding key, down Arrow, and middle part is equipped with a 128*64 lattice lcd
Display screen, display content are enriched, simple and clear, and button can carry out parameter setting, and manual switching, simulates switching, parametric calibration
Etc. function.
Its operation principle is as follows：
By current transformer, voltage transformer is changed into forceful electric power signal proportional weak electric signal；Transformed electricity
Press signal to be sent into signal processing circuit, analog signal zero crossing the pulse signal of cycle identical zero-acrross ing moment such as is converted to micro-
Controller, microcontroller calculate the time of two signals, are converted to phase difference, power factor is then calculated；Ratio decays
The sampling of voltage and current signal Full wave shape, and calculate the virtual value of voltage and current, be multiplied by proportionality coefficient and obtain current voltage
And electric current；Full wave shape sampled point obtains the harmonic value of voltage and current by Fourier transform；Then reactive power, and alarm are calculated
State, to judge whether to put into or cut off compensating electric capacity.
Fling-cut switch uses operating passing zero technology, and relay is kept according to collect contacts both end voltage zero passage detection signal and magnetic
Device closure performs actuation time, calculates the compensation time, by drive circuit, drives magnetic latching relay, realizes that zero passage is put into,
The heavy current impact to power grid is avoided, extends the contact endurance of fling-cut switch；It is dynamic that this magnetic latching relay closure is measured at the same time
Make time storage, so as to next switching automatic adjusument.
Detect that power factor exceedes this group of capacitance less than the value and reactive power of setting in unit detection unit
By delay, exemplified by putting into A phase capacitances, voltage between the magnetic latching relay contact of first detection connection A phase capacitances when value
Zero crossing, after detecting point of zero voltage, delay certain time, (delay time was half cycles time and the closure of magnetic latching relay
The difference of actuation time), delay time arrives, and is precisely between next contact when being closed to relay to relay drive signal
At the voltage zero-cross moment, so ensure that capacitor is put into voltage zero-cross, realizes and accesses electric capacitor to power grid non-impact current
Device, when cutting off capacitance, first detects A current zero-crossing points, and after detecting current zero, delay certain time, (delay time was half cycle
Ripple time and the difference of the disconnection actuation time of magnetic latching relay), delay time arrives, and gives magnetic latching relay drive signal,
When being performed to magnetic latching relay, it is precisely the current over-zero moment, so ensures that capacitor is cut off in current over-zero, avoid drawing
Arc phenomenon.The fling-cut switch principle that other are connected is identical, and processing method is also identical.The structure setting of the utility model is reasonable,
Installed using combined type, can effectively reduce material and manually installed cost, its switching is safer reliable, to power grid impact compared with
It is small, service life is improved to a certain extent, can effectively ensure the safe and reliable to operation of capacitor, applicability is good, practicality
By force, and using the control of RS485 communication modes, the networking of 30 similar products at most can be achieved, can not have in addition configure idle
Compensating controller can realize that reactive-load compensation control controls, and stability in use is good, strong applicability and practicality is good.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.And the obvious changes or variations that these connotations for belonging to the utility model are extended out still falls within this practicality
New protection domain.
Claims (6)
1. a kind of box-like power capacitor of multiloop mixed compensation type smart group, including microcontroller and with the microcontroller phase
The power supply of connection, it is characterised in that：Further include signal acquisition circuit, signal processing circuit, RJ45 connection level interface circuit,
RS485 telecommunication circuits, electric capacitor circuit and fling-cut switch control circuit, the signal acquisition circuit pass through signal processing circuit
Be connected with the signal input part of the microcontroller, RJ45 connection level interface circuit by RS485 telecommunication circuits with it is described
Microcontroller is connected realization and the cascade of microcontroller, and the fling-cut switch control circuit includes the first fling-cut switch circuit
Group, the second fling-cut switch circuit group and the 3rd fling-cut switch circuit group, the electric capacitor circuit include the first condenser network, the
Two condenser networks and the 3rd condenser network, first condenser network are connected by the first fling-cut switch circuit group with microcontroller
Connect, second condenser network is connected by the second fling-cut switch circuit group with microcontroller, and the 3rd condenser network leads to
Cross the 3rd fling-cut switch circuit group with the microcontroller to be connected, the first fling-cut switch circuit group is synchronously opened including two
Powered-down road, the second fling-cut switch circuit group includes two simultaneous switching circuits and the 3rd fling-cut switch circuit group includes
Three simultaneous switching circuits, the simultaneous switching circuit include relay driver, first resistor, second resistance, 3rd resistor,
4th resistance, relay, the first photo-coupler, the second photo-coupler, the tenth resistance, operational amplifier, the 14th resistance, the tenth
Three resistance, the 12nd resistance, the 15th resistance, two input pins of the relay driver respectively by 3rd resistor and
4th resistance connects on a microcontroller, and the output terminal of the relay driver is connected to the relay coil both ends of relay,
Switch one end of the relay is connected to the luminous cathode of the first photo-coupler by first resistor, the other end passes through the second electricity
Resistance is connected to the luminous cathode of the second photo-coupler, a vertex of first condenser network be connected to the switch of relay with
On the tie point of first resistor, it is electrically connected on the switch of relay and the tie point of second resistance, first optical coupling
The luminous anode of device be connected to second resistance with the second photo-coupler tie point and the luminous anode of the second photo-coupler is connected
On the tie point of first resistor and the first photo-coupler, first photo-coupler and the second collector for shining coupler lead to
Cross the tenth resistance be connected to operational amplifier+pin on, operational amplifier-pin by the 12nd resistance eutral grounding, pass through
13rd resistance connects 5V power supplys, and the output pin of operational amplifier is connected on a microcontroller by the 15th resistance, and the 14th
Resistance is connected between the output pin of operational amplifier and-pin.
2. the box-like power capacitor of multiloop mixed compensation type smart group according to claim 1, it is characterised in that：First
Condenser network and the second condenser network are for the triangle condenser network being made of three capacitors, the 3rd condenser network
The Y shape condenser network being made of three capacitors, a vertex of triangle condenser network are connected on B phase conductors, another two
Output vertex is connected on two input pins of the first fling-cut switch or the second fling-cut switch, the public top of Y shape condenser network
Point is connected on N phase conductors and three output points are connected on the input pin of the 3rd fling-cut switch.
3. the box-like power capacitor of multiloop mixed compensation type smart group according to claim 2, it is characterised in that：It is described
RJ45 connection level interface circuits include capacitor cascade port and phase current signal collection port, the capacitor cascade port with
RS485 telecommunication circuits are connected, and the phase current signal collection port is connected with signal processing circuit.
4. the box-like power capacitor of multiloop mixed compensation type smart group according to claim 3, it is characterised in that：It is described
Signal acquisition circuit includes phase voltage signal Acquisition Circuit and capacitance current punch current transfomer signal acquisition circuit, the phase voltage
Signal acquisition circuit and capacitance current punch current transfomer signal acquisition circuit are connected with signal processing circuit.
5. the box-like power capacitor of multiloop mixed compensation type smart group according to claim 4, it is characterised in that：Also wrap
The temperature sensing circuit and control panel being connected with the microcontroller are included, the temperature sensing circuit includes the subzero temperature of series connection
Spend coefficient resistance and resistance.
6. the box-like power capacitor of multiloop mixed compensation type smart group according to claim 5, it is characterised in that：It is described
The master chip model STM8S207RB of microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720700068.XU CN207265666U (en) | 2017-06-08 | 2017-06-08 | The box-like power capacitor of multiloop mixed compensation type smart group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720700068.XU CN207265666U (en) | 2017-06-08 | 2017-06-08 | The box-like power capacitor of multiloop mixed compensation type smart group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207265666U true CN207265666U (en) | 2018-04-20 |
Family
ID=61915569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720700068.XU Active CN207265666U (en) | 2017-06-08 | 2017-06-08 | The box-like power capacitor of multiloop mixed compensation type smart group |
Country Status (1)
| Country | Link |
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| CN (1) | CN207265666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829458A (en) * | 2019-12-11 | 2020-02-21 | 恒一电气集团有限公司 | Synchronous intelligent sub-compensation capacitor |
| CN111148286A (en) * | 2019-12-24 | 2020-05-12 | 追觅科技(上海)有限公司 | Equipment control method, device and storage medium |
| EP3799291A1 (en) * | 2019-09-30 | 2021-03-31 | Rockwell Automation Technologies, Inc. | Systems and methods for controlling firing delay in multi-phase relay devices |
-
2017
- 2017-06-08 CN CN201720700068.XU patent/CN207265666U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3799291A1 (en) * | 2019-09-30 | 2021-03-31 | Rockwell Automation Technologies, Inc. | Systems and methods for controlling firing delay in multi-phase relay devices |
| US11380503B2 (en) | 2019-09-30 | 2022-07-05 | Rockwell Automation Technologies, Inc. | Systems and methods for controlling firing delay in multi-phase relay devices |
| EP4304083A3 (en) * | 2019-09-30 | 2024-03-06 | Rockwell Automation Technologies, Inc. | Systems and methods for controlling firing delay in multi-phase relay devices |
| CN110829458A (en) * | 2019-12-11 | 2020-02-21 | 恒一电气集团有限公司 | Synchronous intelligent sub-compensation capacitor |
| CN111148286A (en) * | 2019-12-24 | 2020-05-12 | 追觅科技(上海)有限公司 | Equipment control method, device and storage medium |
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