CN108270285A - Digital distribution terminal and its control method - Google Patents
Digital distribution terminal and its control method Download PDFInfo
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- CN108270285A CN108270285A CN201611260101.8A CN201611260101A CN108270285A CN 108270285 A CN108270285 A CN 108270285A CN 201611260101 A CN201611260101 A CN 201611260101A CN 108270285 A CN108270285 A CN 108270285A
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Abstract
An embodiment of the present invention provides a kind of digital distribution terminal and its control method, wherein, the number distribution terminal is connect with breaker, and the number distribution terminal includes：Governor circuit and input/output control circuit；The input/output control circuit is connect respectively with the governor circuit and breaker；The governor circuit includes：Computing module carries out calculation process for the sampled data to the digital distribution terminal, exports every operating parameter；Protection module, for according to every operating parameter judging whether that starting protection is needed to operate；Execution module operates for if desired starting protection, then sends a control signal to the breaker by the input/output control circuit, and the breaker is made to perform operation corresponding with the control signal.Protection and control function are increased for digital distribution terminal through the embodiment of the present invention, improves the safety and reliability of distribution system.
Description
Technical field
The present embodiments relate to distribution technique field more particularly to a kind of digital distribution terminal and its control methods.
Background technology
Distribution system is will to export to user terminal from step-down distribution substation (High Voltage Distribution Substations) in electric system
This section of system.Distribution system be the voltage of transformation that is made of a variety of controller switching equipments (or element) and distribution facility and directly to
User terminal distributes an electric power network system of electric energy.
In traditional distribution system, by being equipped with a large amount of instrument on power distribution cabinet, such as ammeter, voltmeter, electric energy meter
Etc., the data such as electric current, voltage, electric energy are indicated.When the data such as electric current, voltage, electric energy appearance exception, easily to distribution
When cabinet damages even safety accident, power distribution cabinet can not be protected and be controlled to itself.
Invention content
An embodiment of the present invention provides a kind of digital distribution terminal and its control methods, can not to solve existing power distribution cabinet
The problem of itself is protected and is controlled.
One side according to embodiments of the present invention provides a kind of digital distribution terminal, and the number distribution terminal is with breaking
Road device connection, the number distribution terminal include：Governor circuit and input/output control circuit；Wherein, the input and output control
Circuit processed is connect respectively with the governor circuit and breaker；The governor circuit includes：
Computing module carries out calculation process for the sampled data to the digital distribution terminal, exports every operation ginseng
Number；
Protection module, for according to every operating parameter judging whether that starting protection is needed to operate；
Execution module operates for if desired starting protection, then sends control letter by the input/output control circuit
Number to the breaker, perform the breaker and control the corresponding operation of signal with described.
One side according to embodiments of the present invention additionally provides a kind of control method of digital distribution terminal, the number
Distribution terminal is connect with breaker, and the number distribution terminal includes：Governor circuit and input/output control circuit；Wherein, institute
Input/output control circuit is stated to connect with the governor circuit and breaker respectively；The governor circuit includes：Microprocessor；
Calculation process is carried out to the sampled data of the digital distribution terminal using the microprocessor, exports every operation
Parameter；
According to every operating parameter judge whether that starting protection is needed to operate；
If desired starting protection operates, then sends a control signal to the open circuit by the input/output control circuit
Device makes the breaker perform operation corresponding with the control signal.
A kind of digital distribution terminal and its control method provided according to embodiments of the present invention, the number distribution terminal is with breaking
Road device connection, the number distribution terminal include：Governor circuit, for judging whether to need to protect distribution system；Input
Output control circuit for connecting governor circuit and breaker, and transmits the control signal of governor circuit to breaker；Breaker
It is controlled by governor circuit, for protecting distribution line and electrical equipment.In a kind of feasible embodiment, governor circuit packet
It includes：Computing module for carrying out calculation process to the sampled data of digital distribution terminal, exports every operating parameter；Protect mould
Block, for according to every operating parameter judging whether that starting protection is needed to operate；Execution module is grasped for if desired starting protection
Make, then breaker is sent a control signal to by input/output control circuit, breaker is made to perform behaviour corresponding with control signal
Make.Number distribution terminal of the embodiment of the present invention increases protection and control function, and breaker is controlled to distribution by governor circuit
System is protected, and improves the safety and reliability of distribution system.
Description of the drawings
Fig. 1 is a kind of structure diagram of according to embodiments of the present invention one digital distribution terminal；
Fig. 2 is a kind of structure diagram of according to embodiments of the present invention two digital distribution terminal；
Fig. 3 is a kind of step flow chart of the control method of according to embodiments of the present invention three digital distribution terminal；
Fig. 4 is a kind of step flow chart of the control method of according to embodiments of the present invention four digital distribution terminal.
Specific embodiment
(identical label represents identical element in several attached drawings) and embodiment below in conjunction with the accompanying drawings, implement the present invention
The specific embodiment of example is described in further detail.Following embodiment is used to illustrate the present invention, but be not limited to the present invention
Range.
It will be understood by those skilled in the art that the terms such as " first ", " second " in the embodiment of the present invention are only used for distinguishing
Different step, equipment or module etc. neither represent any particular technology meaning, also do not indicate that the inevitable logic between them is suitable
Sequence.
Embodiment one
With reference to Fig. 1, a kind of structure diagram of according to embodiments of the present invention one digital distribution terminal is shown.
Digital distribution terminal in the present embodiment is connect with breaker 104, and digital distribution terminal includes：Governor circuit 100
With input/output control circuit 102.Wherein, input/output control circuit 102 connects respectively with governor circuit 100 and breaker 104
It connects.Governor circuit 100 includes：Computing module 1000, for carrying out calculation process, output to the sampled data of digital distribution terminal
Every operating parameter.Protection module 1002, for according to every operating parameter judging whether that starting protection is needed to operate.Perform mould
Block 1004 operates for if desired starting protection, then sends a control signal to breaker by input/output control circuit 102
104, breaker is made to perform operation corresponding with control signal.
In the present embodiment, governor circuit 100 passes through its internal microprocessor (Microcontroller Unit, MCU)
(can be advanced RISC machines (Advanced RISC Machines, ARM) microcontroller, digital signal processor
(Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate
Array, FPGA), preferred ARM microcontrollers) it carries out calculation process and exports the analysis of every operating parameter and defencive function sentencing
It is disconnected, and control function is performed, control signal is sent to input/output control circuit 102, to control the breaker in distribution line
104 actions, realize protection and control function.
In the present embodiment, governor circuit 100 further includes communication/power isolation circuit and communication interface module, and MCU passes through logical
News/power isolation circuit connect with communication interface module (communication interface can be RS485 interfaces, controller local area network
(Controller Area Network, CAN) interface).Governor circuit 100 further includes memory module (such as electric erazable programmable
Read memory (Electrically Erasable Programmable Read-Only Memory, EEPROM) and it is serial outside
Peripheral equipment interface (Serial Peripheral Interface Flash, SPI Flash) etc., real-time clock (Real Time
Clock, RTC) module, reserce cell.Governor circuit 100 is also associated with display module, for showing that digital distribution terminal is real-time
Every operating parameter of monitoring.
Input/output control circuit 102 is made of digital isolation circuit and dry contact input/output circuitry.Wherein, stem grafting
Point input circuit is used to the status data of breaker inputing to governor circuit 100, and point of breaker is judged by governor circuit 100
"on" position；Dry contact output circuit is used for transmission the control signal of the output of governor circuit 100, disconnected in distribution line to control
Road device 104 acts, for example, the divide-shut brake of breaker 104 can be realized by controlling motor-operating mechanism.
According to a kind of digital distribution terminal provided in this embodiment, which connect with breaker, the number
Distribution terminal includes：Governor circuit, for judging whether to need to protect distribution system；Input/output control circuit is used
In connection governor circuit and breaker, and the control signal of governor circuit is transmitted to breaker；Breaker is controlled by governor circuit,
For protecting distribution line and electrical equipment.In a kind of feasible embodiment, governor circuit includes：Computing module is used for
Calculation process is carried out to the sampled data of digital distribution terminal, exports every operating parameter；Protection module, for being transported according to items
Row parameter judges whether that starting protection is needed to operate；Execution module operates for if desired starting protection, then passes through input and output
Control circuit sends a control signal to breaker, and breaker is made to perform operation corresponding with control signal.The present embodiment number is matched
Electric terminals increase protection and control function, breaker are controlled to protect distribution system by governor circuit, improve and match
The safety and reliability of electric system.
Embodiment two
With reference to Fig. 2, a kind of structure diagram of according to embodiments of the present invention two digital distribution terminal is shown.
The present embodiment is to emphasize the difference with above-described embodiment, and something in common is referred in above-described embodiment
It introduces and illustrates, details are not described herein.
Digital distribution terminal in the present embodiment includes：Voltage and current Acquisition Circuit 106, temperature collection circuit 108 and mould
Number (Analog Digital, AD) sampling module 110.Above-mentioned sampled data can pass through voltage and current Acquisition Circuit 106 and temperature
Degree Acquisition Circuit 108 collects.Wherein, voltage and current Acquisition Circuit 106 includes voltage transformer 1060, current transformer
1061st, residual current transformer 1062, filter circuit 1063, ammeter chip 1064, amplifying circuit 1065 and port protection module
1066.Voltage and current Acquisition Circuit 106 is used to acquire the voltage signal, current signal and residual current signal of distribution line, packet
Include metering acquisition and protection acquisition.Metering acquisition is that voltage signal and the filtered circuit 1063 of current signal are connected to ammeter
Chip 1064, ammeter chip 1064 are connect with the MCU of governor circuit 100, can carry out electric energy tariffing, voltage and current is examined in real time
Survey, power quality analysis, electrical energy pulse output, user power utilization statistics etc..Protection acquisition is by voltage signal, current signal and remains
After aftercurrent signal is by amplifying circuit 1065 and port protection module 1066, master control electricity is transferred to by AD sampling modules 110
Road 100 carries out operation, analysis and judgement by the MCU of governor circuit 100, distribution line is protected by controlling breaker 104
And electrical equipment.Above-mentioned current signal and residual current signal pass through current transformer 1061 and residual current transformer respectively
1062 detections, voltage signal are detected by voltage transformer 1060.Temperature sensor 1080 in temperature collection circuit 108 acquires
After temperature signal, the MCU of governor circuit 100 is transferred to by the digital isolation circuit 1081 of temperature collection circuit 108, can be used for
The temperature of cable, copper bar, connector etc. is acquired, the MCU of governor circuit 100, can be to electricity by judging temperature signal
Gas fire is alarmed, then by the way that breaker 104 is controlled to protect distribution line.
Optionally, protection module 1002 includes：Sample hit processing thread and protection processing thread；Wherein, hit is sampled
Thread is handled, for the first data being calculated according to every operating parameter, judges whether to need to start instantaneous protection operation；
Execution module 1004 for if desired starting instantaneous protection operation, then calls hit to handle protective program, to perform instantaneous protection
Operation；If not needing to start instantaneous protection operation, the virtual value of the first data is calculated, virtual value is sent to protection processing line
Journey.Above-mentioned first data can be current value, voltage value, residual current value etc..
Hit processing thread is sampled by 110 down trigger of AD sampling modules, is highest priority thread, is at all protections
The time-base trigger thread of reason, per T2 (0.3125ms), operation is primary, real-time sampling and calculating data (current value, voltage value, residue
Current value etc.), and be saved in extra buffer, the analytical judgment and execution of instantaneous protection function are carried out at the same time, if held
Row instantaneous protection function then calls hit to handle protective program；Otherwise, if continuous operation preset times, after 64 times, i.e., one
A cycle, then calculate the virtual value of data, and notifies protection processing thread, carries out the judgement of other protections in addition to hit is protected
Processing.
The time of one cycle is T1, and T1 is the inverse of ac frequency, and the number of run of a cycle is 64 times, such as frequency
When rate is 50HZ, T1 20ms.
Protection processing thread, for the second data to be calculated according to virtual value, and judges whether need according to the second data
Start other protection operations in addition to instantaneous protection operates；Execution module 1004, for if desired starting except instantaneous protection
Other protection operations except operation, then trigger breaker 104 and thread off.Above-mentioned second data can be actual average voltage value,
Actual average current value, current imbalance rate etc..
Protection processing thread is run 1 time per cycle T1 (20ms), the virtual value meter calculated according to sampling hit processing thread
The related data (can be actual average voltage value, actual average current value, current imbalance rate etc.) of other defencive functions is calculated,
And after passing through analytical judgment, corresponding protection act is performed, triggers circuit breaker tripping, carry out judging processing and is performed in addition to hit is protected
Other defencive functions outside shield (can be long delay protection, heat memory overload protection, under-voltage protection and current imbalance protection
Deng).
The step of protection module 1002 judges whether to perform under-voltage protection is as follows：
First, under-voltage protection：As voltage max V in three-phase distribution circuitmaxLess than under-voltage protection setting valve VL, and it is accumulative
Time is more than under-voltage protection action delay time TL, then under-voltage protection is triggered, is alarmed or triggered circuit breaker tripping tripping, into
And to a kind of enhanced protection mode that distribution line and electrical equipment are protected.
Realize under-voltage protection the step of be：
1. sampling hit processing thread, the three-phase voltage signal of real-time sampling distribution line, while be converted to digital signal
Vadc, then take absolute value ︱ Vadc ︱, and sums to each ︱ Vadc ︱ of a cycle, is then averaged, obtains a cycle
Average voltage level Va.
The time of one cycle be T1, T1 be ac frequency inverse, as frequency be 50HZ when, T1 20ms；
The time interval of real-time sampling three-phase voltage signal be T2, T2=T1/64, as T1 be 20ms when, T2 is
0.3125ms；
2. protection processing thread, is converted to actual average voltage value Voa=by the average voltage level Va of each cycle in real time
Va*k。
Wherein：k：Voltage conversion coefficient；
Voltage conversion coefficient is set according to the voltage measurement range and analog-to-digital conversion digit of actual circuit, for example voltage is surveyed
Ranging from 0~100V is measured, when analog-to-digital conversion digit is 12, k 0.04883.
Determine voltage max Vmax：When distribution line is three-phase, VmaxFor actual average voltage value maximum in three-phase
Voa；When distribution line is single-phase, VmaxFor actual average voltage value Voa.
3rd, data analysis judges and handles；
First, following parameter is set in digital distribution terminal, and following parameter is according to practical distribution circuit electric voltage value
And it sets, and then play the purpose of protection distribution line or electrical equipment.
Under-voltage protection setting valve VL：As voltage max VmaxLess than VLCertain time interval TL, under-voltage protection can be triggered；
Under-voltage protection action delay time TL：It is more than T when the under-voltage timeL, under-voltage protection can be triggered；
Under-voltage protection return value VH：If distribution line has been in under-voltage condition, as voltage max VmaxHigher than VH
Certain time interval THWhen, under-voltage protection restores, and voltage is normal, wherein VH＞ VL；
Under-voltage protection returns to delay time TH：If distribution line has been in under-voltage condition, as voltage max Vmax
Higher than VHAnd the duration is more than THWhen, under-voltage protection restores, and voltage is normal；
Under-voltage protection computational methods are：Protection processing thread, each cycle T1 (20ms) judge primary voltage maximum value
VmaxIf VmaxLess than under-voltage protection setting valve VL, then under-voltage time cumulation is proceeded by, otherwise under-voltage cumulative time clearing；
If the under-voltage cumulative time is more than under-voltage protection action delay time TL, then under-voltage protection, sampling hit processing thread hair are triggered
Go out signal to shunt release or/and motor-operating mechanism, and then trigger circuit breaker tripping tripping, cut off distribution line, realize
The safety of distribution line and electrical equipment is protected in under-voltage protection.
When digital distribution terminal has been in under-voltage protection, then as voltage max VmaxMore than under-voltage protection return value
VH, then proceeding by recovery time adds up, and otherwise restores the cumulative time and resets；If restore the cumulative time to return more than under-voltage protection
Return delay time TH, then distribution line and electrical equipment restore from under-voltage condition, under-voltage protection status releasing.
The step of protection module 1002 judges whether to perform current imbalance protection is as follows：
2nd, current imbalance is protected：In three-phase power distribution system, as split-phase electric current maximum degree of unbalancedness UBmaxMore than electric current not
Balanced ratio protection seting value UBH, and the duration is more than current imbalance protection act delay time TH, then trigger current is not
Circuit breaker tripping is alarmed or triggered to balanced protection, and then the one kind protected to distribution line and electrical equipment is advanced
Protected mode.
1. sampling hit processing thread, real-time sampling current transformer measures the three-phase current signal of distribution line, simultaneously
Digital signal IadcA, IadcB, IadcC of three-phase are converted to, then take absolute value to each split-phase digital signal ︱ IadcA ︱, ︱
IadcB ︱, ︱ IadcC ︱, and sum to each split-phase absolute value of a cycle, it is then averaged, obtains each point of a cycle
Phase sample mean current value IADCA、IADCB、IADCC。
The time of one cycle be T1, T1 be ac frequency inverse, as frequency be 50HZ when, T1 20ms；
The time interval of acquisition three-phase current signal is T2, T2=T1/64 in real time, and when such as T1 being 20ms, T2 is
0.3125ms；
2. protection processing thread, in real time by each sampling with different phase average current value I of each cycleADCA、IADCB、IADCCConversion
For each split-phase actual average current value Ia, Ib, Ic：
Ia=IADCA*k；
Ib=IADCB*k；
Ic=IADCC*k；
Wherein：k：Electric current conversion coefficient；
Electric current conversion coefficient is set according to the current-voltage measurement range and analog-to-digital conversion digit of actual circuit, such as electricity
Flow measurement ranging from 0~100A, when analog-to-digital conversion digit is 12, k 0.04883；
Three split-phase actual average current value Ia, Ib, Ic are averaged, obtain three-phase average current value Iavg：
Iavg=(Ia+Ib+Ic)/3
Calculate the unbalance factor UB of each split-phase electric currenta、UBb、UBc：
Such as the unbalance factor of A phases：
And take the unbalance factor UB of three split-phase electric currentsa、UBb、UBcMaximum value, as current imbalance rate value UBmax, make
Subsequently to carry out the value of current imbalance judgement；
3rd, data analysis judges and handles；
First, following parameter is set in digital distribution terminal, and following parameter is to load feelings according to practical distribution line
Condition and set, and then play protection distribution line or equipment purpose.
Current imbalance rate protection seting value UBH：As current imbalance rate value UBmaxHigher than UBH, then it represents that distribution line goes out
Existing current imbalance state；
Current imbalance protection act delay time TH：When current imbalance state duration is more than TH, can trigger current
Unbalance protection, into current imbalance guard mode；
Current imbalance rate protection return value UBL：As current imbalance rate value UBmaxLess than UBL, then it represents that at distribution line
In current balance type state, UBL＜ UBH；
Current imbalance protection returns to delay time TL：If distribution line has been in current imbalance guard mode,
Then as current imbalance rate value UBmaxIt is more than T in the equilibrium state durationLWhen, current imbalance protection restores；
Current imbalance protects computational methods：Protection processing thread, it is uneven that each cycle T1 (20ms) calculates primary current
Weighing apparatus rate value UBmaxIf UBmaxMore than current imbalance rate protection seting value UBH, then current imbalance state for time is proceeded by
It is accumulative, otherwise current imbalance state cumulative time clearing；If the current imbalance state cumulative time is more than current imbalance
Protection act delay time TH, then trigger current unbalance protection, sampling hit processing thread send a signal to shunt release
Or/and motor-operating mechanism, and then circuit breaker tripping tripping is triggered, distribution line is cut off, realizes current imbalance protection, protection
The safety of distribution line and electrical equipment.
When digital distribution terminal be in current imbalance protection in, as current imbalance rate value UBmaxLess than electric current not
Balanced ratio protection return value UBL, then proceeding by recovery time adds up, and otherwise restores the cumulative time and resets；If restore accumulative
Time is more than current imbalance protection and returns to delay time TL, then distribution line and electrical equipment are from current imbalance guard mode
Restore, current imbalance guard mode releases.
Optionally, the digital distribution terminal in the present embodiment further includes：Power circuit 112, for alternating current to be converted to
Direct current, each circuit power supply for digital distribution terminal.
Optionally, MCU is connect by communication/power isolation circuit 114 with communication interface module 1161.Input and output control
Circuit 102 is made of digital isolation circuit 1020 and dry contact input/output circuitry 1021, digital isolation circuit 1020 and MCU
Connection.
According to a kind of digital distribution terminal provided in this embodiment, which connect with breaker, the number
Distribution terminal includes：Governor circuit, for judging whether to need to protect distribution system；Input/output control circuit is used
In connection governor circuit and breaker, and the control signal of governor circuit is transmitted to breaker；Breaker is controlled by governor circuit
For protecting distribution line and electrical equipment.In a kind of feasible embodiment, governor circuit includes：Computing module is used for
Calculation process is carried out to the sampled data of digital distribution terminal, exports every operating parameter；Protection module, for being transported according to items
Row parameter judges whether that starting protection is needed to operate；Execution module operates for if desired starting protection, then passes through input and output
Control circuit sends a control signal to breaker, and breaker is made to perform operation corresponding with control signal.The present embodiment number is matched
Electric terminals increase protection and control function, breaker are controlled to protect distribution system by governor circuit, improve and match
The safety and reliability of electric system.
Number distribution terminal provided in this embodiment is applied in distribution system, can show each of monitored distribution system
Item operating parameter, can make power distribution cabinet/distribution box etc. not need to install a large amount of instrument, save material and cost.
Number distribution terminal provided in this embodiment also achieves the monitoring and management to distribution system items operating parameter,
It realizes Parameter analysis, accident analysis, data storage and information display function, enriches the function of distribution system.
Embodiment three
With reference to Fig. 3, show according to embodiments of the present invention three a kind of digital distribution terminal control method the step of flow
Cheng Tu.
The control method of digital distribution terminal in the present embodiment can be realized by any suitable terminal device, of the invention
Embodiment is not restricted this, and the present embodiment is only illustrated by taking digital distribution terminal as an example.In the present embodiment, digital distribution is whole
End is connect with breaker, and digital distribution terminal includes：Governor circuit and input/output control circuit.Input/output control circuit point
It is not connect with governor circuit and breaker；Governor circuit includes：Microprocessor.
The control method of the digital distribution terminal of the present embodiment includes the following steps：
Step S300, calculation process is carried out to the sampled data of digital distribution terminal using microprocessor, exports every fortune
Row parameter.
Step S302, according to every operating parameter judge whether that starting protection is needed to operate, if desired starting protection operates,
Then perform step S304；If not needing to starting protection operation, terminate this flow.
Step S304, breaker is sent a control signal to by input/output control circuit, breaker is made to perform and control
The corresponding operation of signal.
According to a kind of control method of digital distribution terminal provided in this embodiment, which connects with breaker
It connects, which includes：Governor circuit, for judging whether to need to protect distribution system；Input and output control
Circuit processed for connecting governor circuit and breaker, and transmits the control signal of governor circuit to breaker；Breaker is by master control
Circuit controls to protect distribution line and electrical equipment.In a kind of feasible embodiment, digital distribution terminal is adopted
Sample data carry out calculation process, export every operating parameter；According to every operating parameter judge whether that starting protection is needed to operate；
If desired starting protection operate, then breaker is sent a control signal to by input/output control circuit, make breaker perform with
Control the corresponding operation of signal.The present embodiment number distribution terminal increases protection and control function, by controlling breaker pair
Distribution system is protected, and improves the safety and reliability of distribution system.
Example IV
With reference to Fig. 4, show according to embodiments of the present invention four a kind of digital distribution terminal control method the step of flow
Cheng Tu.
The present embodiment is still illustrated by taking digital distribution terminal as an example.In the present embodiment, digital distribution terminal and breaker
Connection, the number distribution terminal include：Governor circuit and input/output control circuit.Input/output control circuit respectively with master control
Circuit is connected with breaker；Governor circuit includes：Microprocessor.
The control method of the digital distribution terminal of the present embodiment includes the following steps：
Step S400, calculation process is carried out to the sampled data of digital distribution terminal using microprocessor, exports every fortune
Row parameter.
Optionally, every operating parameter includes：Voltage, electric current, frequency, active power, reactive power, apparent energy, work(
Rate factor, active energy indicating value, reactive energy indicating value, accumulative active energy amount, accumulative reactive energy amount, voltage and current harmonic number
According to, it is current unbalance factor, voltage unbalance factor, active maximum demand and time of origin, idle maximum demand and time of origin, disconnected
Phase data, switching value, residual current, temperature.
Step S402, according to every operating parameter judge whether that starting protection is needed to operate, if desired starting protection operates,
Then perform step S404；If not needing to starting protection operation, terminate this flow.
Optionally, microprocessor includes：Sample hit processing thread and protection processing thread.
This step S402 may include steps of：
Step S4020, using sampling hit processing thread according to the first number that every operating parameter is calculated
According to judging whether to need to start instantaneous protection operation；If desired start instantaneous protection operation, then call hit processing protection journey
Sequence, to perform instantaneous protection operation；If not needing to start instantaneous protection operation, the virtual value of the first data is calculated, it will be effective
Value is sent to protection processing thread.
Step S4022, virtual value is carried out the second data to be calculated, and according to the second data using protection processing thread
Judge whether to need to start other protection operations in addition to instantaneous protection operates；If desired start in addition to instantaneous protection operates
Other protection operation, then trigger circuit breaker tripping tripping.
Optionally, before the virtual value for calculating the first data in above-mentioned steps S4020, can also judge to sample hit processing
Whether the number of run of thread reaches preset times, and preset times can be 64, and the embodiment of the present invention is to the specific of preset times
Numerical value is not limited.
Optionally, other protection operations include at least one of：Long delay protection operation, heat memory overload protection behaviour
Work, under-voltage protection operation, current imbalance protection operation.
Step S404, breaker is sent a control signal to by input/output control circuit, breaker is made to perform and control
The corresponding operation of signal.
The control method of the digital distribution terminal of the present embodiment can adopt corresponding number distribution in aforesaid plurality of embodiment
Terminal is performed the control method of the present embodiment as executive agent by the digital distribution terminal in aforesaid plurality of embodiment, and
The advantageous effect of embodiment with corresponding digital distribution terminal, details are not described herein.
It may be noted that according to the needs of implementation, all parts/step described in the embodiment of the present invention can be split as more
The part operation of two or more components/steps or components/steps can be also combined into new component/step by multi-part/step
Suddenly, to realize the purpose of the embodiment of the present invention.
Those of ordinary skill in the art may realize that each exemplary lists described with reference to the embodiments described herein
Member and method and step can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is performed with hardware or software mode, specific application and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The range of the embodiment of the present invention.
Embodiment of above is merely to illustrate the embodiment of the present invention, and is not the limitation to the embodiment of the present invention, related skill
The those of ordinary skill in art field in the case where not departing from the spirit and scope of the embodiment of the present invention, can also make various
Variation and modification, therefore all equivalent technical solutions also belong to the scope of the embodiment of the present invention, the patent of the embodiment of the present invention
Protection domain should be defined by the claims.
Claims (10)
1. a kind of number distribution terminal, which is characterized in that the number distribution terminal is connect with breaker, and the number distribution is whole
End includes：Governor circuit and input/output control circuit；Wherein, the input/output control circuit respectively with the governor circuit
It is connected with breaker；The governor circuit includes：
Computing module carries out calculation process for the sampled data to the digital distribution terminal, exports every operating parameter；
Protection module, for according to every operating parameter judging whether that starting protection is needed to operate；
Execution module is operated for if desired starting protection, is then sent a control signal to by the input/output control circuit
The breaker makes the breaker perform operation corresponding with the control signal.
2. number distribution terminal according to claim 1, which is characterized in that the protection module includes：It samples at hit
Lineation journey and protection processing thread；Wherein,
The sampling hit processing thread, for the first data being calculated according to every operating parameter, judges whether
It needs to start instantaneous protection operation；
The execution module for if desired starting instantaneous protection operation, then calls hit to handle protective program, instantaneous to perform
Protection operation；If not needing to start instantaneous protection operation, the virtual value of first data is calculated, the virtual value is sent
Thread is handled to the protection；
The protection processing thread, for the second data to be calculated according to the virtual value, and sentences according to second data
Disconnected other protection operations whether needed to start in addition to the instantaneous protection operates；
The execution module for if desired starting other protection operations in addition to the instantaneous protection operates, then triggers institute
State circuit breaker tripping tripping.
3. number distribution terminal according to claim 2, which is characterized in that the execution module, for described in calculating
Before the virtual value of first data, judge whether the number of run of the sampling hit processing thread reaches preset times.
4. the digital distribution terminal according to Claims 2 or 3, which is characterized in that other described protection operations include following
At least one：Long delay protection operation, the operation of heat memory overload protection, under-voltage protection operation, current imbalance protection operation.
5. according to claim 1-4 any one of them number distribution terminals, which is characterized in that the items operating parameter packet
It includes：Voltage, electric current, frequency, active power, reactive power, apparent energy, power factor, active energy indicating value, reactive energy show
Value, accumulative active energy amount, accumulative reactive energy amount, voltage and current harmonic data, current unbalance factor, voltage unbalance factor,
Active maximum demand and time of origin, idle maximum demand and time of origin, disconnected phase data, switching value, residual current, temperature.
6. a kind of control method of number distribution terminal, which is characterized in that the number distribution terminal is connect with breaker, described
Digital distribution terminal includes：Governor circuit and input/output control circuit；Wherein, the input/output control circuit respectively with institute
Governor circuit is stated to connect with breaker；The governor circuit includes：Microprocessor；
Calculation process is carried out to the sampled data of the digital distribution terminal using the microprocessor, exports every operation ginseng
Number；
According to every operating parameter judge whether that starting protection is needed to operate；
If desired starting protection operates, then sends a control signal to the breaker by the input/output control circuit, make
The breaker performs operation corresponding with the control signal.
7. according to the method described in claim 6, it is characterized in that, the microprocessor includes：Sample hit processing thread and
Protection processing thread；
According to every operating parameter judge whether that starting protection is needed to operate, including：
Using the sampling hit processing thread according to the first data that every operating parameter is calculated, judge
Whether need to start instantaneous protection operation；
If desired start instantaneous protection operation, then hit is called to handle protective program, to perform instantaneous protection operation；If it does not need to
Start instantaneous protection operation, then calculate the virtual value of first data, the virtual value is sent to the protection processing line
Journey；
Thread is handled using the protection virtual value is carried out the second data to be calculated, and sentence according to second data
Disconnected other protection operations whether needed to start in addition to the instantaneous protection operates；
If desired start other protection operations in addition to the instantaneous protection operates, then trigger the circuit breaker tripping tripping.
It is 8. described the method according to the description of claim 7 is characterized in that before the virtual value for calculating first data
Method further includes：
Judge whether the number of run of the sampling hit processing thread reaches preset times.
9. method according to claim 7 or 8, which is characterized in that other described protection operations include at least one of：
Long delay protection operation, the operation of heat memory overload protection, under-voltage protection operation, current imbalance protection operation.
10. according to claim 6-9 any one of them methods, which is characterized in that the items operating parameter includes：Voltage,
Electric current, active power, reactive power, apparent energy, power factor, active energy indicating value, reactive energy indicating value, adds up at frequency
Active energy amount, accumulative reactive energy amount, voltage and current harmonic data, current unbalance factor, voltage unbalance factor, active maximum
Requirement and time of origin, idle maximum demand and time of origin, disconnected phase data, switching value, residual current, temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260101.8A CN108270285B (en) | 2016-12-30 | 2016-12-30 | Digital power distribution terminal and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260101.8A CN108270285B (en) | 2016-12-30 | 2016-12-30 | Digital power distribution terminal and control method thereof |
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| CN108270285A true CN108270285A (en) | 2018-07-10 |
| CN108270285B CN108270285B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611260101.8A Active CN108270285B (en) | 2016-12-30 | 2016-12-30 | Digital power distribution terminal and control method thereof |
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|---|---|
| CN108270285B (en) | 2023-10-03 |
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