CN105914737A - Power distribution cabinet and method and device of controlling power distribution cabinet to execute loop closing operation - Google Patents
Power distribution cabinet and method and device of controlling power distribution cabinet to execute loop closing operation Download PDFInfo
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- CN105914737A CN105914737A CN201610312119.1A CN201610312119A CN105914737A CN 105914737 A CN105914737 A CN 105914737A CN 201610312119 A CN201610312119 A CN 201610312119A CN 105914737 A CN105914737 A CN 105914737A
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- Prior art keywords
- voltage
- inlet wire
- cyclization
- phase
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a power distribution cabinet and a method and device of controlling the power distribution cabinet to execute loop closing operation. The method comprises: determining whether a loop closing instruction is received; if a loop closing instruction is determined to be received, detecting the voltage of a first path of power supply inlet wires and a second path of power supply inlet wires, wherein the loop closing instruction is used for indicating the first path of power supply inlet wires and the second path of power supply inlet wires which enter the power distribution cabinet through the body of the power distribution cabinet to execute loop closing operation; determining whether the voltage of the first path of power supply inlet wires and the second path of power supply inlet wires accords with loop closing conditions; if the voltage of the first path of power supply inlet wires and the second path of power supply inlet wires accords with loop closing conditions, outputting loop closing signals; and responding to the loop closing signals, and executing loop closing on the first path of power supply inlet wires and the second path of power supply inlet wires. In the prior art, a bus tie circuit breaker is operated manually to execute loop closing operation on a power distribution cabinet, which easily leads to loop closing failure, and in the invention, the problem is solved.
Description
Technical field
The present invention relates to power domain, perform Loop Closing Operation in particular to a kind of power distribution cabinet and control power distribution cabinet
Method and apparatus.
Background technology
In order to ensure power distribution network reliability of operation, power distribution cabinet generally uses duplex feeding inlet wire to be powered, and every road supplies
Electricity inlet wire carries corresponding power load, in case wherein a road supply lines breaks down, it is ensured that power distribution network normal power supply.
Duplex feeding inlet wire is fanout operation under normal circumstances, but under special circumstances, duplex feeding inlet wire needs mutually
Contact, needs to carry out Loop Closing Operation and is linked together by two power supply inlet wires paired running.
In prior art, Loop Closing Operation is that bus can by distribution staff direct cyclization bus
With paired running that duplex feeding inlet wire is linked together.But, use the mode of artificial directly cyclization bus
Be there is failed risk in two sections of bus paired runnings, if the voltage difference between duplex feeding inlet wire or phase angle difference
Being worth excessive, may result in Alloy White Iron excessive, bus trips, and causes cyclization failure.
It is easily caused cyclization mistake for correlation technique performs Loop Closing Operation by manual operation bus to power distribution cabinet
The problem lost, the most not yet proposes effective solution.
Summary of the invention
Present invention is primarily targeted at a kind of power distribution cabinet to be provided and controls power distribution cabinet and perform method and the dress of Loop Closing Operation
Put, to solve correlation technique is easily caused cyclization by manual operation bus to power distribution cabinet execution Loop Closing Operation
Failed problem.
To achieve these goals, according to an aspect of the invention, it is provided a kind of power distribution cabinet that controls performs cyclization behaviour
The device made.This device includes: bus, is arranged in power distribution cabinet, and is respectively connecting to via power distribution cabinet
Cabinet enters the first via of power distribution cabinet and powers inlet wire and two-way power supply inlet wire, for when receiving cyclization signal to the
Power inlet wire and two-way power supply inlet wire of one tunnel performs cyclization；Cyclization command reception circuit, is used for receiving cyclization instruction；
Cyclization signal circuit, input is connected with cyclization command reception circuit, and outfan is connected with bus, uses
In detecting after receiving cyclization instruction whether the power voltage of inlet wire and two-way power supply inlet wire of the first via meets cyclization
Condition, and the first via power the voltage of inlet wire and two-way power supply inlet wire meet cyclization condition time output cyclization signal extremely
Bus.
Further, cyclization signal circuit includes: phase difference detector, is connected with cyclization command reception circuit, uses
In receive cyclization instruction after detect the first via power inlet wire and two-way power supply inlet wire voltage between phase place
Difference；And difference voltage detector, it is connected with cyclization command reception circuit, for examining after receiving cyclization instruction
Survey the first via power inlet wire and two-way power supply inlet wire voltage between voltage difference.
Further, cyclization signal circuit also includes: logical operation circuit, with phase difference detector, voltage difference detection
Device is connected with bus, is used for judging that phase contrast, whether in preset phase difference range, and judges voltage difference
Whether in predeterminated voltage difference range, if it is judged that phase contrast in preset phase difference range and voltage difference is in advance
If exporting cyclization signal time in the range of voltage difference.
Further, the first via powers inlet wire and two-way power supply inlet wire includes A, B, C three-phase bus respectively, wherein,
First via inlet wire of powering includes first via A phase bus, and two-way power supply inlet wire includes the second road A phase bus, this device
Also include: the first voltage transformer, be arranged on first via A phase bus, be used for according to default blood pressure lowering ratio first
The voltage of road A phase bus carries out blood pressure lowering, obtains the first voltage；Second voltage transformer, is arranged on the second road A phase female
On line, for the second road A phase bus being carried out blood pressure lowering according to default blood pressure lowering ratio, obtaining the second voltage, phase contrast is examined
Survey device includes: first phase detector, is connected with the first voltage transformer, for the phase angle of detection the first voltage；
Second phase detector, is connected with the second voltage transformer, and for the phase angle of detection the second voltage, first compares
Circuit, is connected with first phase detector and second phase detector, for determining the phase angle and the of the first voltage
The difference at the phase angle of two voltages, obtains A phase bus phase contrast, and difference voltage detector includes: the first voltage detector,
It is connected with the first voltage transformer, for the magnitude of voltage of detection the first voltage；Second voltage detector, with the second electricity
Pressure transformer be connected, for detection the second voltage magnitude of voltage, the second comparison circuit, with the first voltage detector and
Second voltage detector is connected, and is used for determining the difference of the magnitude of voltage of the magnitude of voltage of the first voltage and the second voltage,
Poor to A phase busbar voltage, wherein, logical operation circuit is for according to A phase bus phase contrast and A phase busbar voltage
Difference judges whether to export cyclization signal.
Further, logical operation circuit includes: the first logic circuit, is connected with the first comparison circuit, is used for
Exporting the first enable signal when A phase bus phase contrast is in preset phase difference range, the second logic circuit, with second
Comparison circuit is connected, for exporting the second enable signal when A phase busbar voltage difference is in predeterminated voltage difference range,
Bus includes: relay, is connected with the first logic circuit and the second logic circuit, for receiving the
One enables when signal and second enables signal power the first via inlet wire and the execution cyclization of two-way power supply inlet wire.
Further, this device also includes: cyclization button, is connected with cyclization command reception circuit, is used for producing conjunction
Fourth finger makes.
To achieve these goals, according to an aspect of the invention, it is provided a kind of power distribution cabinet.This power distribution cabinet includes
The power distribution cabinet that controls of the present invention performs the device of Loop Closing Operation.
To achieve these goals, according to an aspect of the invention, it is provided a kind of power distribution cabinet that controls performs cyclization behaviour
The method made.The method includes: judge whether to receive cyclization instruction；If it is judged that receive cyclization instruction, inspection
Survey the first via to power inlet wire and the voltage of two-way power supply inlet wire, wherein, cyclization instruction for instruction via power distribution cabinet
Cabinet enters power inlet wire and two-way power supply inlet wire of the first via of power distribution cabinet and performs cyclization；Judge that the first via is powered inlet wire
Cyclization condition whether is met with the voltage of two-way power supply inlet wire；If it is judged that the first via is powered, inlet wire and the second tunnel supply
The voltage of electricity inlet wire meets cyclization condition, exports cyclization signal；And in response to cyclization signal, the first via is powered into
Line and two-way power supply inlet wire perform cyclization.
Further, detection the first via power inlet wire and two-way power supply inlet wire voltage before, the method also includes:
Carry out blood pressure lowering according to the default blood pressure lowering ratio first via powered inlet wire, obtain the first voltage；And according to default step-down ratio
Example carries out blood pressure lowering to two-way power supply inlet wire, obtains the second voltage, and the detection first via powers inlet wire and two-way power supply enters
The voltage of line includes: detect phase angle and the magnitude of voltage of the first voltage；Detect phase angle and the magnitude of voltage of the second voltage.
Further, it is judged that whether the power voltage of inlet wire and two-way power supply inlet wire of the first via meets cyclization condition and include:
Calculate the difference between the phase angle of the first voltage and the phase angle of the second voltage, obtain phase contrast；Calculate the first voltage
Magnitude of voltage and the magnitude of voltage of the second voltage between difference, obtain voltage difference；Judge that whether phase contrast is in preset phase
In difference range；Judge voltage difference whether in predeterminated voltage difference range, wherein, if it is judged that phase contrast is in advance
If in the range of phase difference value and voltage difference is in predeterminated voltage difference range, then judge that the first via is powered inlet wire and second
The power voltage of inlet wire of road meets cyclization condition.
The present invention is by judging whether the voltage on duplex feeding inlet wire meets cyclization bar after receiving cyclization and instructing
Part, sends cyclization signal again and controls the first via and power inlet wire and two-way power supply inlet wire performs conjunction when meeting cyclization condition
Ring, solves, by manual operation bus, power distribution cabinet execution Loop Closing Operation is easily caused the problem that cyclization is failed,
And then reached to improve the effect of the success rate that manual operation bus performs Loop Closing Operation to power distribution cabinet.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the device controlling power distribution cabinet execution Loop Closing Operation according to a first embodiment of the present invention；
Fig. 2 is the schematic diagram of the device controlling power distribution cabinet execution Loop Closing Operation according to a second embodiment of the present invention；And
Fig. 3 is the flow chart of the method controlling power distribution cabinet execution Loop Closing Operation according to embodiments of the present invention.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the application scheme, below in conjunction with in the embodiment of the present application
Accompanying drawing, is clearly and completely described the technical scheme in the embodiment of the present application, it is clear that described embodiment
It is only the embodiment of the application part rather than whole embodiments.Based on the embodiment in the application, ability
The every other embodiment that territory those of ordinary skill is obtained under not making creative work premise, all should belong to
The scope of the application protection.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that this
The data that sample uses can be exchanged in the appropriate case, in order to embodiments herein described herein.Additionally, term
" include " and " having " and their any deformation, it is intended that cover non-exclusive comprising, such as, comprise
The process of series of steps or unit, method, system, product or equipment are not necessarily limited to those steps clearly listed
Rapid or unit, but can include that the most clearly list or intrinsic for these processes, method, product or equipment
Other step or unit.
The embodiment provides a kind of power distribution cabinet that controls and perform the device of Loop Closing Operation.
Fig. 1 is the schematic diagram of the device controlling power distribution cabinet execution Loop Closing Operation according to a first embodiment of the present invention.Such as figure
Shown in 1, this device includes bus 10, cyclization command reception circuit 20 and cyclization signal circuit 30.
Bus 10 is arranged in power distribution cabinet, connects the first via entering power distribution cabinet via the cabinet of power distribution cabinet respectively
Power supply inlet wire and two-way power supply inlet wire, for inlet wire and the confession of the second tunnel of powering the first via when receiving cyclization signal
Electricity inlet wire performs cyclization, and wherein, when not receiving cyclization signal, the first via powers inlet wire and two-way power supply inlet wire is
Disconnect.
Bus 10 can be relay, and the contact of relay powers with the first via inlet wire and two-way power supply respectively
Inlet wire is connected, and cyclization signal, for controlling the contact conducting of relay, is powered inlet wire and the second tunnel connecting the first via
Power supply inlet wire, performs cyclization, and when being not received by cyclization signal, the contact of relay disconnects, the first via power into
Line and two-way power supply inlet wire are off.
Cyclization command reception circuit 20 is used for receiving cyclization instruction.Cyclization instruction be by outside send for instruction first
Power inlet wire and two-way power supply inlet wire of road performs the instruction of cyclization.Preferably, this device can also include cyclization button,
Being connected with cyclization command reception circuit 20, cyclization button is used for producing cyclization instruction, and sends cyclization instruction to closing
Ring command reception circuit 20.Such as, distribution staff, when pressing cyclization button, can turn on cyclization command reception
Circuit 20, produces a signal of telecommunication, and this signal of telecommunication is cyclization instruction, and cyclization command reception circuit 20 receives this conjunction
Fourth finger makes.
The input of cyclization signal circuit 30 is connected with cyclization command reception circuit 20, cyclization command reception circuit 20
After receiving cyclization instruction, cyclization signal circuit 30 receives cyclization instruction, and in response to cyclization command detection the
Whether the power voltage of inlet wire and two-way power supply inlet wire of one tunnel meets cyclization condition, and powers inlet wire and in the first via
When the voltage of two-way power supply inlet wire meets cyclization condition, output cyclization signal is to bus 10.Wherein, cyclization signal
The outfan of circuit 30 is connected with bus 10.
Cyclization condition is that the first via powers inlet wire and two-way power supply inlet wire can perform the condition of cyclization, specifically, and should
Condition can be judge the first via power inlet wire voltage and the voltage of two-way power supply inlet wire between phase contrast and voltage
Whether difference meets cyclization condition, if phase contrast and voltage difference are excessive, then may result in cyclization failure.Cyclization signal
Circuit 30 can preset the concrete numerical value of preset phase difference range and predeterminated voltage difference range, in detection first
Road power inlet wire and two-way power supply inlet wire voltage after, it is judged that the first via is powered the voltage of inlet wire and two-way power supply
Whether the phase contrast between the voltage of inlet wire in preset phase difference range, it is judged that the first via power inlet wire voltage and
Whether the voltage difference between the voltage of two-way power supply inlet wire is in predeterminated voltage difference range, according to two knots judged
Fruit judges whether the power voltage of inlet wire and two-way power supply inlet wire of the first via meets cyclization condition.
What this embodiment provided controls the device of power distribution cabinet execution Loop Closing Operation, is received by cyclization command reception circuit 20
Cyclization instructs, and the cyclization signal circuit 30 that input is connected with cyclization command reception circuit 20 detects the first via and powers
Whether the voltage of inlet wire and two-way power supply inlet wire meets cyclization condition, and is detecting that the first via is powered inlet wire and second
Road power the voltage of inlet wire when meeting cyclization condition output cyclization signal perform cyclization to control bus 10, solve
By manual operation bus, power distribution cabinet is performed Loop Closing Operation and be easily caused the problem that cyclization is failed, Jin Erda
Arrive the effect improving the success rate that manual operation bus performs Loop Closing Operation to power distribution cabinet.
Preferably, cyclization signal circuit 30 can include phase difference detector and difference voltage detector.Phase difference detector
It is connected with cyclization command reception circuit 20, powers inlet wire and for detecting the first via after receiving cyclization instruction
Phase contrast between the voltage of two-way power supply inlet wire.Difference voltage detector is connected with cyclization command reception circuit 20, uses
In receive cyclization instruction after detect the first via power inlet wire and two-way power supply inlet wire voltage between voltage
Difference.
Preferably, cyclization signal circuit 30 can also include logical operation circuit, logical operation circuit and phase difference detection
Device, difference voltage detector are connected with bus 10, are used for judging that whether phase contrast is in preset phase difference range
In, and judge voltage difference whether in predeterminated voltage difference range, if it is judged that phase contrast is at preset phase difference model
Enclose interior and voltage difference in predeterminated voltage difference range time output cyclization signal.Logical operation circuit can also be by central authorities
Processors etc. can perform chip that calculating processes or unit performs.
The first via powers inlet wire and two-way power supply inlet wire includes A, B, C three-phase bus respectively, and wherein, the first via supplies
Electricity inlet wire includes first via A phase bus, and two-way power supply inlet wire includes the second road A phase bus.
Preferably, this device can also include the first voltage transformer and the second voltage transformer.First voltage transformer
It is arranged on first via A phase bus, for the voltage of first via A phase bus being carried out blood pressure lowering according to default blood pressure lowering ratio,
Obtain the first voltage.Second voltage transformer is arranged on the second road A phase bus, for according to default blood pressure lowering ratio pair
Second road A phase bus carries out blood pressure lowering, obtains the second voltage.
Correspondingly, phase difference detector can include that first phase detector, second phase detector and first are the most electric
Road.First phase detector and the first voltage transformer are connected, for the phase angle of detection the first voltage；Second phase
Bit detector and the second voltage transformer are connected, for the phase angle of detection the second voltage；First comparison circuit, with
First phase detector is connected with second phase detector, for determining the phase angle of the first voltage and the second voltage
The difference at phase angle, obtains A phase bus phase contrast.
Difference voltage detector can include the first voltage detector, the second voltage detector and the second comparison circuit.First
Voltage detector and the first voltage transformer are connected, for the magnitude of voltage of detection the first voltage；Second voltage detector
It is connected with the second voltage transformer, for the magnitude of voltage of detection the second voltage；Second comparison circuit and the inspection of the first voltage
Survey device and the second voltage detector is connected, be used for determining the difference of the magnitude of voltage of the magnitude of voltage of the first voltage and the second voltage
Value, obtains A phase busbar voltage poor.
Phase difference detector obtains A phase bus phase contrast and after difference voltage detector obtains A phase busbar voltage difference, patrols
Collect computing circuit to judge whether to export cyclization signal according to A phase bus phase contrast and A phase busbar voltage difference.
Preferably, logical operation circuit can include the first logic circuit and the second logic circuit.First logic circuit with
First comparison circuit is connected, for exporting the first enable when A phase bus phase contrast is in preset phase difference range
Signal, the second logic circuit and the second comparison circuit are connected, and are used in A phase busbar voltage difference in predeterminated voltage difference
In the range of time output second enable signal.
Correspondingly, bus 10 can include relay, is connected with the first logic circuit and the second logic circuit,
For when receiving the first enable signal and second enables signal the first via being powered inlet wire and two-way power supply inlet wire is held
Row cyclization.
Fig. 2 is the schematic diagram of the device controlling power distribution cabinet execution Loop Closing Operation according to a second embodiment of the present invention.This is real
Executing example can be as the preferred implementation of above-mentioned first embodiment, as in figure 2 it is shown, control power distribution cabinet to perform cyclization behaviour
The device 100 made includes bus 10, cyclization signal circuit 30, voltage transformer 41, namely above-mentioned first
Voltage transformer, voltage transformer 42, namely above-mentioned second voltage transformer, and cyclization button 50.
This device is arranged in power distribution cabinet 200, and the cabinet of power distribution cabinet 200 has duplex feeding inlet wire, the respectively first via
Power supply inlet wire and two-way power supply inlet wire, first via inlet wire of powering includes that tri-buses of 1A, 1B and 1C, the second tunnel supply
Electricity inlet wire includes tri-buses of 2A, 2B and 2C.
Voltage transformer 41 is arranged on 1A bus, for the voltage on 1A bus performs equal proportion blood pressure lowering, electricity
Pressure transformer 42 is arranged on 2A bus, for the voltage on 2A bus is performed equal proportion blood pressure lowering, mutual induction of voltage
The blood pressure lowering ratio of device 41 and voltage transformer 42 is identical.
Cyclization signal circuit 30 is connected with voltage transformer 41 and voltage transformer 42, or and voltage transformer
That section of bus after 41 blood pressure lowerings is connected with that section of bus after voltage transformer 42 blood pressure lowering, for detecting respectively
The phase contrast of the voltage after 1A bus blood pressure lowering and after 2A bus blood pressure lowering and voltage difference.Cyclization signal circuit 30 can
To include phase difference detecting circuit and voltage difference detection circuits.
Cyclization button 50 is used for producing cyclization instruction, when cyclization button 50 is activated, produces cyclization instruction, cyclization
Signal circuit 30 can be connected with cyclization button 50, and when cyclization button 50 is activated, cyclization signal circuit turns on,
Perform phase contrast and the voltage difference of detection voltage after 1A bus blood pressure lowering and after 2A bus blood pressure lowering.
If the phase contrast that cyclization signal circuit 30 detects or voltage difference be not in preset range, the most do not export cyclization letter
Number, if be detected that phase contrast or voltage difference in preset range, then output cyclization signal to control bus
The 10 pairs of first via power inlet wire and two-way power supply inlet wire performs cyclization.The first via is powered inlet wire by bus 10
With two-way power supply inlet wire perform cyclization be respectively connection 1A bus and 2A bus, 1B bus and 2B bus and
1C bus and 2C bus.
Embodiments of the invention additionally provide a kind of method controlling power distribution cabinet execution Loop Closing Operation.It should be noted that
The method controlling power distribution cabinet execution Loop Closing Operation of the embodiment of the present invention can be performed cyclization by the control power distribution cabinet of the present invention
The device of operation performs.
Fig. 3 is the flow chart of the method controlling power distribution cabinet execution Loop Closing Operation according to embodiments of the present invention.Such as Fig. 3 institute
Showing, the method comprises the following steps:
Step S101, it may be judged whether receive cyclization instruction.
It is inlet wire and second of powering the first via entering power distribution cabinet via the cabinet of power distribution cabinet that power distribution cabinet performs Loop Closing Operation
Road power inlet wire perform cyclization.Cyclization instruction is used for indicating power distribution cabinet to perform Loop Closing Operation.
Step S102, if it is judged that receive cyclization instruction, the detection first via is powered inlet wire and two-way power supply inlet wire
Voltage.
After judging whether to receive cyclization instruction, if it is judged that receive cyclization instruction, the detection first via is powered
Inlet wire and the voltage of two-way power supply inlet wire.If not receiving cyclization instruction, do not perform any operation.
Preferably, detection the first via power inlet wire and two-way power supply inlet wire voltage before, can be according to default fall
Pressure ratio example inlet wire of powering the first via carries out blood pressure lowering, obtains the first voltage, according to default blood pressure lowering ratio to two-way power supply
Inlet wire carries out blood pressure lowering, obtains the second voltage, and the power voltage of inlet wire and two-way power supply inlet wire of the detection first via can be
Detect phase angle and the magnitude of voltage of the first voltage, detect phase angle and the magnitude of voltage of the second voltage.
Step S103, it is judged that whether the power voltage of inlet wire and two-way power supply inlet wire of the first via meets cyclization condition.
The detection first via power inlet wire and two-way power supply inlet wire voltage after, it is judged that the first via is powered inlet wire and the
Whether the voltage of two-way power supply inlet wire meets cyclization condition.Wherein, cyclization condition is that the first via is powered inlet wire and the second tunnel
Power supply inlet wire can perform the condition of cyclization.Specifically, this condition can be judge the first via power inlet wire voltage and
Whether phase contrast and voltage difference between the voltage of two-way power supply inlet wire meet cyclization condition, if phase contrast and voltage
Difference is excessive, then may result in cyclization failure.
Preferably, it is judged that whether the power voltage of inlet wire and two-way power supply inlet wire of the first via meets cyclization condition and can wrap
Include following steps: calculate the difference between the phase angle of the first voltage and the phase angle of the second voltage, obtain phase contrast；
Calculate the difference between the magnitude of voltage of the first voltage and the magnitude of voltage of the second voltage, obtain voltage difference；Judge that phase contrast is
No in preset phase difference range；Judge voltage difference whether in predeterminated voltage difference range, wherein, if it is determined that
In preset phase difference range and voltage difference is in predeterminated voltage difference range to go out phase contrast, then judge that the first via supplies
The voltage of electricity inlet wire and two-way power supply inlet wire meets cyclization condition.
Step S104, if it is judged that the first via is powered, the voltage of inlet wire and two-way power supply inlet wire meets cyclization condition,
Output cyclization signal.
Judging to power the first via after whether the voltage of inlet wire and two-way power supply inlet wire meet cyclization condition, if sentenced
Break and the power voltage of inlet wire and two-way power supply inlet wire of the first via and meet cyclization condition, export cyclization signal.
Step S105, in response to cyclization signal, the first via is powered inlet wire and the execution cyclization of two-way power supply inlet wire.
Without cyclization signal, the most the first via is not powered inlet wire and the execution cyclization of two-way power supply inlet wire, the first via
Power supply inlet wire and two-way power supply inlet wire disconnect.
What this embodiment provided controls the method that power distribution cabinet performs Loop Closing Operation, by sentencing after receiving cyclization and instructing
Whether the voltage on disconnected duplex feeding inlet wire meets cyclization condition, sends cyclization signal when meeting cyclization condition again and controls
Power inlet wire and two-way power supply inlet wire of the first via performs cyclization, solves by manual operation bus distribution
Cabinet performs Loop Closing Operation and is easily caused the problem that cyclization is failed, and then has reached raising manual operation bus to joining
Electricity cabinet performs the effect of the success rate of Loop Closing Operation.
It should be noted that can be at such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing
Computer system performs, and, although show logical order in flow charts, but in some cases, can
With to be different from the step shown or described by order execution herein.
Embodiments of the invention additionally provide a kind of power distribution cabinet.It should be noted that the power distribution cabinet bag of the embodiment of the present invention
The power distribution cabinet that controls including the present invention performs the device of Loop Closing Operation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made
Any modification, equivalent substitution and improvement etc., should be included within the scope of the present invention.
Claims (10)
1. the device controlling power distribution cabinet execution Loop Closing Operation, it is characterised in that described device includes:
Bus, is arranged in power distribution cabinet, and is respectively connecting to enter institute via the cabinet of described power distribution cabinet
State the first via of power distribution cabinet to power inlet wire and two-way power supply inlet wire, for when receiving cyclization signal to described
Power inlet wire and described two-way power supply inlet wire of the first via performs cyclization；
Cyclization command reception circuit, is used for receiving cyclization instruction；
Cyclization signal circuit, input is connected with described cyclization command reception circuit, outfan and described mother
Chopper is connected, and powers inlet wire and described for detecting the described first via after receiving described cyclization instruction
Whether the voltage of two-way power supply inlet wire meets cyclization condition, and powers inlet wire and described second in the described first via
Road powers and exports described cyclization signal to described bus when the voltage of inlet wire meets described cyclization condition.
Device the most according to claim 1, it is characterised in that described cyclization signal circuit includes:
Phase difference detector, is connected with described cyclization command reception circuit, for referring to receiving described cyclization
Detect after order the described first via power inlet wire and described two-way power supply inlet wire voltage between phase contrast；With
And
Difference voltage detector, is connected with described cyclization command reception circuit, for referring to receiving described cyclization
Detect after order the described first via power inlet wire and described two-way power supply inlet wire voltage between voltage difference.
Device the most according to claim 2, it is characterised in that described cyclization signal circuit also includes:
Logical operation circuit, with described phase difference detector, described difference voltage detector and described bus
It is connected, is used for judging that described phase contrast, whether in preset phase difference range, and judges that described voltage difference is
No in predeterminated voltage difference range, if it is judged that described phase contrast in described preset phase difference range and
Described cyclization signal is exported when described voltage difference is in described predeterminated voltage difference range.
Device the most according to claim 3, it is characterised in that the described first via power inlet wire and described second tunnel supply
Electricity inlet wire includes A, B, C three-phase bus respectively, and wherein, described first via inlet wire of powering includes first via A
Phase bus, described two-way power supply inlet wire includes the second road A phase bus,
Described device also includes: the first voltage transformer, is arranged on described first via A phase bus, is used for pressing
Take default blood pressure lowering ratio and the voltage of described first via A picture bus is carried out blood pressure lowering, obtain the first voltage；Second electricity
Pressure transformer, is arranged on the second road A phase bus, is used for according to described default blood pressure lowering ratio described second tunnel
A phase bus carries out blood pressure lowering, obtains the second voltage,
Described phase difference detector includes: first phase detector, is connected with described first voltage transformer,
For detecting the phase angle of described first voltage；Second phase detector, is connected with described second voltage transformer
Connect, for detecting the phase angle of described second voltage；First comparison circuit, with described first phase detector and
Described second phase detector is connected, for determining the phase angle of described first voltage and described second voltage
The difference at phase angle, obtains A phase bus phase contrast,
Described difference voltage detector includes: the first voltage detector, is connected with described first voltage transformer,
For detecting the magnitude of voltage of described first voltage；Second voltage detector, is connected with described second voltage transformer
Connect, for detecting the magnitude of voltage of described second voltage；Second comparison circuit, with described first voltage detector and
Described second voltage detector is connected, for determining the magnitude of voltage of described first voltage and described second voltage
The difference of magnitude of voltage, obtains A phase busbar voltage poor,
Wherein, described logical operation circuit is for according to described A phase bus phase contrast and described A phase busbar voltage
Difference judges whether to export cyclization signal.
Device the most according to claim 4, it is characterised in that described logical operation circuit includes:
First logic circuit, is connected with described first comparison circuit, for existing at described A phase bus phase contrast
The first enable signal is exported time in described preset phase difference range；
Second logic circuit, is connected with described second comparison circuit, for existing in described A phase busbar voltage difference
The second enable signal is exported time in described predeterminated voltage difference range,
Described bus includes: relay, with described first logic circuit and described second logic circuit phase
Connect, for the described first via being powered when receiving described first and enabling signal and described second enable signal
Inlet wire and described two-way power supply inlet wire perform cyclization.
Device the most according to claim 1, it is characterised in that described device also includes:
Cyclization button, is connected with described cyclization command reception circuit, is used for producing described cyclization instruction.
7. a power distribution cabinet, it is characterised in that include that the control power distribution cabinet according to any one of claim 1 to 6 performs
The device of Loop Closing Operation.
8. one kind controls the method that power distribution cabinet performs Loop Closing Operation, it is characterised in that including:
Judge whether to receive cyclization instruction；
If it is judged that receive described cyclization instruction, the detection first via is powered inlet wire and two-way power supply inlet wire
Voltage, wherein, described cyclization instruction enters described the of described power distribution cabinet for instruction via the cabinet of power distribution cabinet
Power inlet wire and described two-way power supply inlet wire of one tunnel performs cyclization；
Judge whether the power voltage of inlet wire and described two-way power supply inlet wire of the described first via meets cyclization condition；
If it is judged that the described first via is powered, the voltage of inlet wire and described two-way power supply inlet wire meets described cyclization
Condition, exports cyclization signal；And
In response to described cyclization signal, the described first via is powered inlet wire and described two-way power supply inlet wire performs conjunction
Ring.
Method the most according to claim 8, it is characterised in that
Detection the first via power inlet wire and two-way power supply inlet wire voltage before, described method also includes: press
Carry out blood pressure lowering according to the default blood pressure lowering ratio described first via powered inlet wire, obtain the first voltage；And according to described
Preset blood pressure lowering ratio and described two-way power supply inlet wire carried out blood pressure lowering, obtain the second voltage,
The power voltage of inlet wire and two-way power supply inlet wire of the detection first via includes: detect the phase of described first voltage
Parallactic angle and magnitude of voltage；Detect phase angle and the magnitude of voltage of described second voltage.
Method the most according to claim 9, it is characterised in that judge that the described first via is powered inlet wire and described second
Whether the power voltage of inlet wire of road meets cyclization condition and includes:
Calculate the difference between the phase angle of described first voltage and the phase angle of described second voltage, obtain phase place
Difference；
Calculate the difference between the magnitude of voltage of described first voltage and the magnitude of voltage of described second voltage, obtain voltage
Difference；
Judge that described phase contrast is whether in preset phase difference range；
Judge described voltage difference whether in predeterminated voltage difference range,
Wherein, if it is judged that described phase contrast in described preset phase difference range and described voltage difference is in institute
State in predeterminated voltage difference range, then judge that the described first via is powered inlet wire and described two-way power supply inlet wire
Voltage meets described cyclization condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610312119.1A CN105914737A (en) | 2016-05-11 | 2016-05-11 | Power distribution cabinet and method and device of controlling power distribution cabinet to execute loop closing operation |
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| CN201610312119.1A CN105914737A (en) | 2016-05-11 | 2016-05-11 | Power distribution cabinet and method and device of controlling power distribution cabinet to execute loop closing operation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879951A (en) * | 2018-06-29 | 2018-11-23 | 国网河南省电力公司平顶山供电公司 | A kind of high-voltage circuitbreaker realizing cyclization and determining |
| CN109149956A (en) * | 2018-09-26 | 2019-01-04 | 云南电网有限责任公司电力科学研究院 | A kind of distribution ring device and method based on the adjusting of AC-AC voltage |
| CN111181059A (en) * | 2019-10-24 | 2020-05-19 | 国网天津市电力公司 | 10kV closes ring and falls way assistor |
| CN117335578A (en) * | 2023-12-01 | 2024-01-02 | 成都天合一成科技服务有限公司 | Detection and regulation system for loop closing power conversion of low-voltage power distribution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360871A (en) * | 2011-08-23 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Mutual inductor packaging assembly |
| CN104682551A (en) * | 2015-03-18 | 2015-06-03 | 常熟开关制造有限公司(原常熟开关厂） | Closed-loop screening method for power parallel conversion device and power parallel conversion device |
| CN104701973A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method for parallel power supply conversion device and parallel power supply conversion device |
-
2016
- 2016-05-11 CN CN201610312119.1A patent/CN105914737A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360871A (en) * | 2011-08-23 | 2012-02-22 | 常熟开关制造有限公司(原常熟开关厂） | Mutual inductor packaging assembly |
| CN104682551A (en) * | 2015-03-18 | 2015-06-03 | 常熟开关制造有限公司(原常熟开关厂） | Closed-loop screening method for power parallel conversion device and power parallel conversion device |
| CN104701973A (en) * | 2015-04-08 | 2015-06-10 | 常熟开关制造有限公司(原常熟开关厂） | Control method for parallel power supply conversion device and parallel power supply conversion device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879951A (en) * | 2018-06-29 | 2018-11-23 | 国网河南省电力公司平顶山供电公司 | A kind of high-voltage circuitbreaker realizing cyclization and determining |
| CN109149956A (en) * | 2018-09-26 | 2019-01-04 | 云南电网有限责任公司电力科学研究院 | A kind of distribution ring device and method based on the adjusting of AC-AC voltage |
| CN109149956B (en) * | 2018-09-26 | 2020-05-29 | 云南电网有限责任公司电力科学研究院 | Distribution loop closing device and method based on AC-AC voltage regulation |
| CN111181059A (en) * | 2019-10-24 | 2020-05-19 | 国网天津市电力公司 | 10kV closes ring and falls way assistor |
| CN111181059B (en) * | 2019-10-24 | 2022-03-22 | 国网天津市电力公司 | 10kV closes ring and falls way assistor |
| CN117335578A (en) * | 2023-12-01 | 2024-01-02 | 成都天合一成科技服务有限公司 | Detection and regulation system for loop closing power conversion of low-voltage power distribution |
| CN117335578B (en) * | 2023-12-01 | 2024-02-06 | 成都天合一成科技服务有限公司 | Detection and regulation system for loop closing power conversion of low-voltage power distribution |
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