CN100337294C - Controller and control method of circuit breaker - Google Patents
Controller and control method of circuit breaker Download PDFInfo
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- CN100337294C CN100337294C CNB2004100286382A CN200410028638A CN100337294C CN 100337294 C CN100337294 C CN 100337294C CN B2004100286382 A CNB2004100286382 A CN B2004100286382A CN 200410028638 A CN200410028638 A CN 200410028638A CN 100337294 C CN100337294 C CN 100337294C
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Abstract
The present invention provides a control device and a control method of a circuit breaker. In an AC power system, when the electric quantity waveform comprises DC components, an action signal can also be reliably generated according to fewer data. The control device in which an action signal causing the circuit breaker to act is generated according to the action command comprises an input and output device (I/O), a memory (MEM) and a central process unit (CPU), wherein the input and output device (I/O) collects the electric quantity data of the AC power system connected with the circuit breaker 1; the memory (MEM) keeps data in the previous one period from the latest data collected by the input and output device (I/O); the central process unit (CPU) calculates the amplitude, the phase and the DC component according to the data kept by the memory (MEM) to predict the waveform of the AC power system, and generates the action signal according to the predicted waveform.
Description
Technical field
The control device of the relevant circuit breaker of the present invention and control method, particularly relevant contact of carrying out high-speed circuit breaker opens and closes the control device and the control method of phase control.
Background technology
Figure 11 represents that the spy opens the described leading technology of 2001-135205 communique.In this electric power opening and closing device, be output contact open and close controlling signal in the contact switching is instructed afterwards less than the stand-by period in 1/2 cycle, carry out phase control.
As shown in figure 11, in the example of this prior art, be starting point the zero point of voltage and main circuit current constantly between the contact before the contact opens and closes instruction to be about to send, and prediction reaches the contact and opens and closes time as the zero point of target, controls like this.
In this way, have at voltage between the contact or main circuit current under the situation such as DC component, owing to zero point can not occur, the prediction that will do to make mistake at interval in equal time.
The present invention's purpose is to provide a kind of control device and control method of circuit breaker, even the electric weight waveform contains under the situation of DC component in AC electric power systems, still can generate actuating signal reliably according to the data of negligible amounts, can control the circuit breaker switching phase place, thereby in opening and closing the one-period that has instructed, finish circuit breaker switching.
Summary of the invention
The application's first aspect is a kind of control device of circuit breaker, in this control device that generates the actuating signal make circuit breaker action usefulness according to action command, comprise with the cycle of regulation the electric quantity data of the AC electric power systems that circuit breaker was connected is carried out sampling action, collect the data collection portion of sampled data, and keep previous at least cycle of latest data of collecting from described data collection portion storage part, and the data that keep according to described storage part are set obtain amplitude with interior described data, phase place and DC component are predicted the electric weight waveform of described AC electric power systems, and according to predicting that waveform generates the arithmetic processing section of described actuating signal.
The application's second aspect is a kind of control device of circuit breaker, in this control device that generates the actuating signal make circuit breaker action usefulness according to action command, the electric quantity data that comprises the AC electric power systems that circuit breaker is connected carries out sampling action to collect the data collection portion of sampled data with specified period, the analogue data that described data collection portion is collected is transformed into the transformation component of numerical data, and keep collecting from described data collection portion and be transformed into the storage part of the previous at least cycle of last samples data of numerical data by described transformation component with interior described data, and the numerical data that keeps according to described storage part be set obtain amplitude, phase place and DC component are predicted the waveform of described AC electric power systems, and according to predicting that waveform generates the arithmetic processing section of described actuating signal.
The application's third aspect is a kind of control device of circuit breaker, and in the application first or second aspect, described data collection portion collects voltage signal, collected current signal when circuit breaker is closure state during for off-state at circuit breaker.
The application's fourth aspect is a kind of control device of circuit breaker, in the application first or second aspect, the processing action of interrupting described arithmetic processing section and the interrupting device that described data is remained on described storage part by described arithmetic processing section is set.
The application the 5th aspect is a kind of control device of circuit breaker, in the application first or second aspect, by described arithmetic processing section described data is not remained in the described storage part.
The application the 6th aspect is a kind of control method of circuit breaker, it is when generating the actuating signal that makes circuit breaker action usefulness according to action command, the electric quantity data of the AC electric power systems that circuit breaker connected being carried out the sampling action of specified period is collected then, and keep beginning the previous at least cycle with interior described data from present moment, data that described data are obtained as the waveform according to the fundamental component of described AC electric power systems simultaneously, data according to described maintenance are obtained amplitude, phase place and DC component, thereby predict the electric weight waveform of described AC electric power systems, and generate described actuating signal according to the prediction waveform.
The application the 7th aspect is a kind of control method of circuit breaker, it is when generating the actuating signal that makes circuit breaker action usefulness according to action command, the electric quantity data of the AC electric power systems that circuit breaker connected is collected sampled data with specified period to be kept beginning the previous at least cycle with interior described data from up-to-date sampled data, data that described data are obtained as the waveform according to the fundamental component of described AC electric power systems simultaneously, obtain amplitude according to the data that kept, phase place and DC component, thereby predict the electric weight waveform of described AC electric power systems, and generate described actuating signal according to the waveform of prediction.
The application's eight aspect is a kind of control method of circuit breaker, be aspect the 6th or the 7th in, utilize the maximum and the minimum value of described data and provide moment of the maximum and the minimum value of described data, thereby obtain amplitude, phase place, and the DC component of the electric weight waveform in the described AC electric power systems.
Description of drawings
Fig. 1 is the block diagram of the formation of expression the invention process form 1.
Fig. 2 is the flow chart of the switching signal output action process of expression the invention process form 1.
Fig. 3 detects the flow chart of course of action for the status signal of expression the invention process form 1.
Fig. 4 detects the flow chart of course of action for the command signal of expression the invention process form 1.
Fig. 5 is the flow chart of the Interrupt Process course of action of expression the invention process form 1.
Fig. 6 for expression the invention process form 1 zero point the prediction processing course of action flow chart.
Fig. 7 is the first half of the flow chart of the computing course of action of the amplitude A of expression the invention process form 1, DC component B, phase angle θ.
Fig. 8 is the latter half of the flow chart of the computing course of action of the amplitude A of expression the invention process form 1, DC component B, phase angle θ.
Fig. 9 is the block diagram of the formation of expression the invention process form 2.
Figure 10 is the flow chart of the switching signal output action process of expression the invention process form 2.
Figure 11 is the formation block diagram of expression prior art.
Label declaration
1 high-speed circuit breaker, 2 upper relays, 3 control device, I/O input and output device, A/D analog/digital converter, INT interrupting device, dma memory grass-hopper, CPU central authorities arithmetic processing apparatus, MEM memory.
Embodiment
Example 1
Referring to figs. 1 through Fig. 8 example 1 of the present invention is described.Fig. 1 is the block diagram of the formation of expression example 1.Fig. 2 to Fig. 8 is the flow chart of the course of action of expression example 1.
[device constitutes]
Among Fig. 1; 1 is high-speed circuit breaker; 2 make the upper relay protecting electrical power system relay etc. is made of of high-speed circuit breaker 1 on-off action with on-off action instruction for sending, and 3 make the control device of being made up of digital signal processor (DSP) of the on-off action signal of high-speed circuit breaker 1 on-off action for the on-off action instruction generation according to upper relay 2.
[term definition]
Here, the term shown in the item of following (1) that will use～(7) is defined.
(1) can disconnect constantly: on this current zero of coming at first constantly, become the moment that to open circuit.
(2) but opening time: circuit breaker is accepted cut-off signal to the time that can disconnect constantly.
(3) closing moment: the moment that becomes conducting state between the contact of circuit breaker.
(4) closing time: circuit breaker is received behind the switching signal time to closing moment.
(5) voltage signal: the analog signal of voltage measurement device output, corresponding with detected magnitude of voltage.
(6) current signal: the analog signal of current measurement device output, corresponding with detected current value.
(7) numerical data: voltage signal after the digitized processing or current signal.
[example summary]
It is high-speed circuit breaker about Toc=5msec that but a kind of opening time of representing with Toc and closing time are arranged.
The phase control mode that adopts in the relevant phase control device of this example, it is in the control device of cut-off signal that this high-speed circuit breaker of generation is used and switching signal, send cut-off signal and make and can disconnect constantly simultaneously or become current zero in its vicinity, or send that switching signal makes and closing moment simultaneously or become voltage or current zero in its vicinity.
[action form of phase control device]
In the circuit of digital signal processor shown in Figure 1 (DSP), dress or place near it voltage measurement device and the magnitude of voltage and the corresponding respectively voltage signal and the current signal of current value of the electric power system that the current measurement device obtains in the input of the input and output device (I/O) of DSP and the high-speed circuit breaker is sampled according to certain certain time interval.If the data analog signal after the sampling then becomes digital signal in A-D converter (A/D).
Carry out later processing for the numerical data that the digitized processing of preparing is crossed, as shown in Figure 1, interrupting device (INT) is set, this device has normal process that can hardware interrupts central authorities' arithmetic units (CPU) and the function of carrying out other processing.
About this processing, the formation of example 2 as shown in Figure 9 is such sometimes, does not have and, handles so directly with the device (DMA) of numerical data write memory (MEM) by central arithmetic processing apparatus (CPU), will set forth afterwards this.
In addition, be taken into the command signal of the upper switching commander equipments of forming by the protecting electrical power system relay such as relay system, for example, be defined as and when voltage becomes HIGH, accept execution command, be defined as standby during LOW at input and output device (I/O).
When LOW becomes HIGH and when HIGH becomes LOW, with above-mentioned the same, utilize interrupting device (INT) that central arithmetic processing apparatus (CPU) is interrupted, carry out Interrupt Process.
Have, input and output device (I/O) is also imported the status signal of the contact open and-shut mode of informing high-speed circuit breaker, for example, is defined as off-state when voltage becomes HIGH, is defined as closure state during LOW again.
When LOW becomes HIGH and when HIGH becomes LOW, with above-mentioned the same, utilize interrupting device (INT) that central arithmetic processing apparatus (CPU) is interrupted, carry out Interrupt Process.
The program of representing control method that central arithmetic processing apparatus (CPU) carries out etc. is prestored into memory (MEM), as not being owing to special method and reasons such as update routines, does not then rewrite.
In addition, the data of input also deposit in the memory (MEM), and selecting needs to rewrite.Sometimes program is same memory with memory and data memory, also uses special-purpose separately memory sometimes respectively.
[control action when interrupting] according to sampling
The control action of this example 1 is described.
As shown in Figure 2, the control of phase control device at the beginning, central arithmetic processing apparatus (CPU) has zero memory block (Zero memory block), has or not and open and close three variable ZeroCom, State being preserved in instruction area (Com memory block), circuit-breaker status memory block (the State memory block) and carry out initialization with regard to earlier memory (MEM) being gone up to detect.
Set detection has zero memory block (Zero memory block) in the memory (MEM), when utilizing that zero point described later, prediction processing detected zero point, sets 1 as variable Zero, and in other cases, establishing variable Zero is 0.
Equally, have or not to open and close instruction area (Com memory block) when the on-off action instruction that upper relay 2 is arranged, set 1 as variable Com, in other cases, establishing the Com variable is 0.
Equally, circuit-breaker status memory block (State memory block) is to set variable State according to the contact disconnection or the closure state of circuit breaker 1.
By carrying out described initialization action, Zero, Com initial value separately is set as 0.State is set as 0 when the status signal of circuit breaker is HIGH (off-state), LOW is set as 1 when (closure state).
To array of data key element shown below and the variable of storing OldEst of keeping in the predicted value memory block (OldEst memory block) etc. of the predicted value of last Interrupt Process gained waveform and so on also be initialized as 0.
Initialization one finishes, and just begins following normal process.
Central processing unit (CPU) is read the value of variable Zero and is checked that this value is, does not carry out whatever, reads the value of variable Zero once more at 0 o'clock from memory (MEM).Variable Zero becomes at 1 o'clock, checks the value of variable Com.
The value of Com is 0 o'clock, does not carry out whatever, returns the processing of reading of variable Zero.The value of Com becomes at 1 o'clock, reexamines the value of variable State.
The value of State is 0 o'clock, sends the order to input and output device (I/O) output switching signal, is 1 o'clock in the value of State, sends the order of output cut-off signal.
Command process one finishes, and promptly returns the processing of reading of variable Zero.
Below, three kinds of Interrupt Process are described
At first, the status signal at the contact open and-shut mode of informing high-speed circuit breaker 1 change, during interrupting device (INT) interrupt action, central processing unit (CPU) carries out following processing shown in Figure 3.
When status signal becomes HIGH (off-state), above-mentioned variable State is set as 0, when becoming LOW (closure state), be set as 1.
This handles an end, just gets back to normal process.
Then, according to receiving the instruction that upper next contact disconnects or closes a floodgate, when interrupting device (INT) interrupt action, central processing unit (CPU) carries out following processing shown in Figure 4.
Above-mentioned variable Com sets 1 for when command signal becomes HIGH (execution), is set as 0 when becoming LOW (standby).
This processing is once finishing to return normal process.
Before the third Interrupt Process of explanation, the array of the data of explanation storage earlier.
The zone of preserving with the array form is arranged on memory (MEM).The title of this array is called array of data.
When N is positive integer, prepare N+1 data array, promptly dispose N+1 zone on the Dui Ying memory successively.
The key element of array can be utilized No. 0 to N number array to number and contrast, and the value of N is 64 in this example, needs 32 at least.The key element of array all is set as zero under initial condition.
The fundamental frequency of electric power system is f (f be 50 or 60HZ), cycle when being T=1/f, in input and output device (I/O) is that the certain time interval of Ts=T/N is sampled with the sampling period.
Current signal and voltage signal to high-speed circuit breaker 1 input are sampled, input and output device (I/O) have when variable State is 0 (off-state) gather voltage signal, when State is 1 (closure state) the sample rate current signal as the function of input data.
During sampling, interrupting device (INT) interrupts the normal process of central processing unit (CPU).In view of the above, central processing unit (CPU) is carried out following Interrupt Process shown in Figure 5.
I key element of array of data transferred to i-1 key element (i is for add 1 up to N since 1 at every turn).The input data that newly obtain are transferred to N data array.
After this, central processing unit (CPU) is carried out prediction processing at zero point shown in Figure 6 according to a series of data of being deposited in the array of data.
With the data interpretation of array of data is the waveform data of expression electric power system fundamental frequency f, obtains its amplitude, phase place and DC component by calculating.
What need in this control device is the moment at zero point, even actual waveform has higher harmonic components, but because of zero point of described higher harmonic components identical with the moment at the zero point of fundamental component constantly, so needn't ask the zero point of higher harmonic components.
Ask the computational methods of amplitude A, phase angle θ and the DC component B of fundamental component, also use high speed fourier transform (FFT) sometimes, but also utilize Fig. 7 and following simple and easy method shown in Figure 8 sometimes.
Fig. 7 and Fig. 8 are the flow chart of the computational methods of simple and easy amplitude A, phase angle θ and the DC component B that finds the solution fundamental component of expression, after carrying out flow processing shown in Figure 7, in Fig. 7, from the step shown in the mid portion of right side output 1. with Fig. 8 the step input shown in the topmost 1. link to each other, proceed flow processing shown in Figure 8.
Obtain maximum max and minimum value min and the pairing several group number imax and the imin of all array of data key element values.Will have when a plurality of providing peaked array, establish the imax that is numbered of several group number maximums, imin too.
Amplitude A according to (max+min)/2 obtain, DC component B obtains with (max-min)/2.
About phase place, at first select the bigger of imax and imin, suppose that it is id.But imax be 0 or N and imin neither 0 when being not N again, establish id=imin, imin be 0 or N and imax neither 0 when being not N again, establish id=imax.When above-mentioned condition does not all satisfy, establish id=0.During id=imax, establish phase angle θ and be θ=(id-N) * 2 π/N+ pi/2, during id=imin, be θ=(id-N) * 2 π/N+3 pi/2.
According to the amplitude A of trying to achieve, phase angle θ, DC component B, then as shown in Figure 6, the waveform predicted value Est that can obtain behind the time T oc (5msec) is Est=A * Sin (2 π f * Toc+ θ)+B.
When Est=0, or and the waveform predicted value OldEst comparison that obtained during Interrupt Process last time and symbol not simultaneously, with the above-mentioned variable Zero of 1 substitution, if not so then substitution 0.
After this, with Est substitution OldEst, end interrupt is handled, and returns normal process.
For the value of the N relevant, capping with above-mentioned sampling period Ts.When the time T c that utilizes Interrupt Process to spend becomes value greater than Ts, can not carry out effectively owing to handle, so preferably Tc≤Ts is N≤T/Tc.
Like this, but according to the waveform predicted value Est behind opening time or the closing time Toc (5msec), when but the waveform after detecting opening time or closing time Toc (5msec) is positioned near zero point or zero point, the detection that just will deposit memory (MEM) in has the variable Zero in the zero memory block (Zero memory block) to be set as 1, described in prior figures 2, if the value of variable Com is 1, then according to the value of variable State, give an order output switching signal or cut-off signal.
Adopt same phase control device to handle when closing a floodgate in the foregoing description and when disconnecting, but also can adopt control device separately.
When predicting, also can remove the Filtering Processing of high fdrequency component earlier as zero point.
According to example 1 of the present invention, a kind of control device of circuit breaker can be provided, promptly generating according to action command in the control device of forming by digital signal processor (DSP) 3 of the actuating signal that makes moving 1 effect of high-speed circuit breaker, owing to comprise with cycle of regulation electric quantity datas such as the voltage of the AC electric power systems that high-speed circuit breaker 1 was connected or electric current carried out sampling action to collect the data collection portion that is made up of input and output device (I/O) of sampled data, what the data collection portion that will be made up of described input and output device (I/O) collected is transformed into the transformation component that the A-D converter (A/D) of numerical data is formed by analogue data, and the latest data of the numerical data that is transformed into from the transformation component that also utilizing again of utilizing that the data collection portion is made up of described input and output device (I/O) collects is made up of described analog/digital converter (A/D) begins to keep the storage part memory (MEM) be made of of previous cycle with interior described data, and be provided with according to the numerical data that remains in the storage part that described memory (MEM) forms and obtain amplitude, phase place and DC component are predicted the electric weight waveform of described AC electric power systems and are generated the arithmetic processing section of being made up of central arithmetic processing apparatus (CPU) of described actuating signal according to the prediction waveform, the data collection portion that is made up of described input and output device (I/O) collects voltage signal during for off-state at circuit breaker, collected current signal when circuit breaker is closure state, the processing action of the arithmetic processing section that interruption is made up of described central arithmetic processing apparatus (CPU) is set simultaneously and described data is remained on the interrupting device of forming by interrupting device (INT) of the storage part formed by described memory (MEM) by the arithmetic processing section of being made of described central arithmetic processing apparatus (CPU), so when in the electric weight waveform of AC electric power systems, comprising DC component, also can utilize the data of negligible amounts can generate actuating signal reliably, collect voltage signal when circuit breaker disconnects simultaneously, the fashionable collected current signal of circuit breaker closing, suitably carry out data collection, and utilize interrupt action that described data are remained in the described storage part.
In addition, according to example 1 of the present invention, can obtain a kind of control method of circuit breaker, this method is when generating the actuating signal that makes circuit breaker action usefulness according to action command, because the electric quantity data to the AC electric power systems that circuit breaker connected is collected sampled data with the cycle of regulation, and keep from the last at least cycle of up-to-date sampled data with interior described data, data by described data are obtained as the waveform according to the fundamental component of described AC electric power systems simultaneously, data according to described maintenance are asked amplitude, phase place and DC component, thereby predict the electric weight waveform of described AC electric power systems, and according to predicting that waveform generates described actuating signal, utilize the maximum and the minimum value of described data simultaneously, with the moment that provides described data maximum and minimum value, obtain the amplitude of the waveform of described AC electric power systems, phase place, and DC component, when therefore in the power of friendship quantity of electricity of electric system waveform, containing DC component, also the data few in number that can collect sampling action are simply handled, and reliably and promptly generate actuating signal.
Example 2
Utilize Fig. 9 and Figure 10 that example of the present invention is described.Fig. 9 is the block diagram of the formation of expression example 2.Figure 10 is the flow chart of the course of action of expression example 2.
In the example 2, distinctive formation that will illustrate about this form and formation and the method content beyond the method content have formation and same formation and the method content of method with the example 1 that had before illustrated, and serve the same role.
[device constitutes]
Among Fig. 9; 1 is high-speed circuit breaker; 2 make the upper relay protecting electrical power system relay etc. is made of of high-speed circuit breaker 1 on-off action with on-off action instruction for sending, and 3 make the control device of being made up of digital signal processor (DSP) of the on-off action signal of high-speed circuit breaker 1 on-off action for the on-off action instruction generation according to upper relay 2.
[control action when numerical data is write direct memory]
Below, the control action of this example 2 is described.
As shown in figure 10, the control of phase control device at the beginning, central processing unit (CPU) earlier carries out initialization to three variable Zero, Com, the State that preserves on the memory.
Zero, Com initial value separately is set as 0.State is 0 when the status signal of circuit breaker is HIGH (off-state), and LOW is set as 1 when (closure state).Variablees such as the key element of array of data or OldEst also are initialized as 0.
Initialization one finishes the normal process that just begins following explanation.
Value and inspection that central processing unit (CPU) is read variable Zero from memory (MEM) are 0 o'clock at numerical value, do not carry out whatever, read the value of variable Zero once more.
Variable Zero is 1 o'clock, checks the value of variable Com.The value of Com is 0 o'clock, carries out prediction processing, returns the processing of reading of variable Zero.
The value of Com is 1 o'clock, reexamines the value of variable State.The value of State is 0 o'clock, sends the order to I/O output switching signal, and the value of State is 1 o'clock, sends the order of output cut-off signal.
Command process one finishes, and just carries out prediction processing, returns the processing of reading of variable Zero.
When the status signal of the open and-shut mode of informing high-speed circuit breaker 1 changed, memory grass-hopper (DMA) carried out following processing.
When status signal became HIGH (off-state), above-mentioned variable State was set as 0, when becoming LOW (closure state), set 1 for.
Then, by accepting the upper next disconnection or the command signal of combined floodgate, memory grass-hopper (DMA) carries out following processing.
When command signal became HIGH (execution), above-mentioned variable Com was set as 1, when becoming LOW (standby), was set as 0.
In the sampling of carrying out current signal and voltage signal and when obtaining importing data, memory grass-hopper (DMA) carries out following processing.
To transfer to the 0th to N-1 (sequence number subtracts 1 one by one) from the 1st to N key element of array of data.The input data that newly obtain are transferred to N data array.
According to example 2 of the present invention, a kind of control device of circuit breaker can be provided, promptly in the control device of forming by digital signal processor (DSP) 3 that generates the actuating signal that makes high-speed circuit breaker 1 action usefulness according to action command, owing to comprise with cycle of regulation electric quantity datas such as the voltage of the AC electric power systems that high-speed circuit breaker 1 was connected or electric current carried out sampling action to collect the data collection portion that is made up of input and output device (I/O) of sampled data, the analogue data that to be collected by the data collection portion that described input and output device (I/O) forms is transformed into the transformation component of being made up of analog/digital converter (A/D) of numerical data, and the last samples data of the numerical data that is transformed into from the transformation component that also utilizing again of utilizing that the data collection portion is made up of described input and output device (I/O) collects is made up of described analog/digital converter (A/D) begin to keep the storage part memory (MEM) be made of of previous cycle with interior described data, and be provided with according to the numerical data that remains in the storage part of forming by described memory (MEM) and obtain amplitude, phase place and DC component are predicted the electric weight waveform of AC electric power systems and are generated the arithmetic processing section of being made up of central arithmetic processing apparatus (CPU) of described actuating signal according to the prediction waveform, the data collection portion that is made up of described input and output device (I/O) collects voltage signal during for off-state at circuit breaker, collected current signal when circuit breaker is closure state, simultaneously described data are not remained in the storage part of forming by described memory (MEM) by the arithmetic processing section of forming by described central arithmetic processing apparatus (CPU), so when in the electric weight waveform of AC electric power systems, comprising DC component, also can utilize the data of negligible amounts to generate actuating signal reliably, described data are not kept at storage part simultaneously by arithmetic processing section.
The purpose of above-mentioned the invention process form briefly is summarized as follows.
Even voltage or electric current comprise DC component between the contact, still can more correctly predict the moment at zero point as target, the phase place of the switching contact of control high-speed circuit breaker opens and closes with the interior contact of finishing at one-period from sending the instruction beginning.
Have again, but enumerated opening time and closing time example in the above-mentioned example less than the high-speed circuit breaker of one-period, but, but surpass in the circuit breaker of one-period in opening time and closing time, also can more correctly predict the moment at zero point as target, control opens and closes the phase place of contact.
The main points of the technology contents of example of the present invention are as follows.
(1) waveform of the fundamental component (50Hz or 60Hz) of prediction electric power system.
(2) predicting waveform zero point in order to ask, is according to obtaining amplitude, phase place, DC component from the previous cycle of present moment with interior sampled data, predicting waveform.
(3) adopt easy method to ask amplitude, phase place, DC component.
(4) be to adopt digital signal processor, one side is prediction and calculation zero point all the time, and one side is waited for from upper open command
(5) two kinds of situations are arranged, a kind of is that the prediction at zero point is carried out in each sampling, and another kind is that each computing cycle is carried out the prediction at zero point.
(6) suppose that the sampling period is identical with the computing time of prediction waveform, or longer than it.
Adopt (1)～(3) though sacrificed precision of prediction to a certain degree, can supercomputing.Can the back one-period take place with interior disconnection in accident.
When utilizing the data before the one-period in (2), because produce the effect that the DC component that causes when accident taken place is divided, so one-period during with interior disconnection, reciprocal makes a mistake.
In the example of the present invention, comprise following constitution content.
A kind of phase control device and phase control mode, be in generating the control device of high-speed circuit breaker with cut-off signal and switching signal, the transmission cut-off signal makes and can disconnect the while in the moment or become current zero in its vicinity, send again that switching signal makes and closing moment simultaneously or become voltage or current zero in its vicinity, in described phase control device and phase control mode
(1) a kind of phase control mode is characterized by, and supposes that sampled data is that the waveform of electric power system fundamental component is predicted.
(2) a kind of phase control mode is characterized by, and in order to predict zero point, then according to asking amplitude, phase place, DC component from the last cycle of present moment with interior sampled data, predicts waveform.
(3) a kind of phase control mode is characterized by, and adopts easy method, promptly asks amplitude, phase place, DC component according to the maximum and the minimum value of sampled data and moment of providing each value.
This formation according to example of the present invention can play following effect.
(1) even when in electric current and voltage, DC component being arranged, also can correctly predict.
(2) can after taking place, accident open and close with the interior contact of finishing by one-period.
(3) as long as since have one-period with interior data just can, so it is few to take memory.
(4) owing to the prediction fundamental component, so algorithm becomes simply the energy supercomputing.
(5) because be to utilize simple and easy method to carry out prediction and calculation, so compare computational speed with using FFT Improve, shorten computing time.
Can obtain according to a first aspect of the invention a kind of control device of breaker, owing to advance with specified period The row sampling also arranges arithmetic processing section, and this arithmetic processing section is according to remaining in the previous cycle of storage part Electric quantity data ask amplitude, phase place, and DC component predict the electric weight waveform of AC electric power systems, simultaneously Generate described actuating signal according to described prediction waveform, thereby, even at the electric weight waveform of AC electric power systems When comprising DC component, also can generate reliably actuating signal according to the data of negligible amounts, can control and open circuit The switching phase place of device, thus the switching of breaker in opening and closing the one-period that instruction rises, finished.
Can obtain according to a second aspect of the invention a kind of control device of breaker, owing to advance with specified period The row sampling also is transformed into numerical data, and arithmetic processing section is set simultaneously, and this arithmetic processing section is deposited according to remaining on The previous cycle of storage section with interior electric quantity data ask amplitude, phase place, and DC component predict alternating electromotive force The electric weight waveform of system generates described actuating signal according to described prediction waveform simultaneously, thereby, even handing over The electric weight waveform of stream power system is when comprising DC component, the negligible amounts that also can collect according to sampling action Data generate reliably actuating signal, can control the switching phase place of breaker, thereby instruction plays opening and closing Finish the switching of breaker in the one-period.
Can provide according to a third aspect of the invention we a kind of control device of breaker, even it is at alternating electromotive force When comprising DC component in the electric weight waveform of system, also can generate reliably action according to the data of negligible amounts Signal is simultaneously collected voltage signal during for off-state at breaker, collects during for closure state at breaker Current signal can suitably be collected data.
A kind of control device of circuit breaker can be provided according to a forth aspect of the invention, interrupting device is set, interrupt the processing action of arithmetic processing section, make described electric quantity data remain on storage part by arithmetic processing section, even thereby when in the electric weight waveform of AC electric power systems, comprising DC component, also can reliably and promptly generate actuating signal according to the data of negligible amounts.
A kind of control device of circuit breaker can be provided according to a fifth aspect of the invention, owing to make electric quantity data not remain on described storage part by described arithmetic processing section, thereby, even when in the electric weight waveform of AC electric power systems, comprising DC component, also can reliably and promptly generate the actuating signal of circuit breaker according to the less data of data.
Can obtain a kind of control method of circuit breaker according to a sixth aspect of the invention, play the previous cycle according to the present moment of also being collected with the sampling action of specified period and obtain amplitude with interior electric quantity data, phase place, and DC component, thereby the quantity of electricity waveform of prediction AC electric power systems, and generate described actuating signal according to described prediction waveform, thereby, even when in the electric weight waveform of AC electric power systems, comprising DC component, also can generate actuating signal reliably according to the data processing of negligible amounts, can control the circuit breaker switching phase place, thereby in opening and closing the one-period that has instructed, finish circuit breaker switching.
Can obtain a kind of control method of circuit breaker according to a seventh aspect of the invention, according to playing the previous cycle with interior electric quantity data with the sampling action of specified period and the up-to-date sampled data of being collected, the quantity of electricity waveform of prediction AC electric power systems, and generate described actuating signal according to described prediction waveform, even thereby when in the electric weight waveform of AC electric power systems, comprising DC component, also the data processing of the negligible amounts that can collect according to sampling action generates actuating signal reliably, can control the circuit breaker switching phase place, thereby in opening and closing the one-period that has instructed, finish circuit breaker switching.
It can obtain a kind of control method of circuit breaker according to an eighth aspect of the invention, even when comprising DC component in the electric weight waveform of AC electric power systems, also can be handled simply to the data of negligible amounts, and reliably and promptly generate actuating signal.
Claims (8)
1. the control device of a circuit breaker generates the actuating signal that makes circuit breaker action usefulness according to action command, comprises
With the regulation cycle the expression magnitude of voltage of the AC electric power systems that circuit breaker was connected or the electric quantity data of current value are carried out sampling action, collect then sampled data data collection portion and
The previous at least cycle of latest data that maintenance is collected from described data collection portion is with the storage part of interior described electric quantity data,
It is characterized in that,
Arithmetic processing section is set, this arithmetic processing section was asked amplitude, phase place, is reached the electric weight waveform that DC component is predicted described AC electric power systems with interior described electric quantity data according to the previous cycle that remains on described storage part, generated described actuating signal according to described prediction waveform simultaneously.
2. the control device of a circuit breaker generates the actuating signal that makes circuit breaker action usefulness according to action command, comprises
With cycle of regulation to the electric quantity data of the expression magnitude of voltage of the AC electric power systems that circuit breaker was connected or current value carry out sampling action with the data collection portion of collecting sampled data,
To be transformed into by the analogue data that described data collection portion collects numerical data transformation component and
Maintenance from collect by described data collection portion and be transformed into the storage part of the previous at least cycle of last samples data of numerical data by described transformation component with interior described data,
It is characterized in that,
Arithmetic processing section is set, and this arithmetic processing section asks amplitude, phase place and DC component to predict the waveform of described AC electric power systems by the previous cycle that described storage part keeps with interior numerical data, generates described actuating signal according to the prediction waveform simultaneously.
3. the control device of circuit breaker as claimed in claim 1 or 2 is characterized in that,
Described data collection portion collects voltage signal, collected current signal when circuit breaker is closure state during for off-state at circuit breaker.
4. the control device of circuit breaker as claimed in claim 1 or 2 is characterized in that,
Interrupting device is set, interrupts the processing action of described arithmetic processing section, make described electric quantity data remain on described storage part by arithmetic processing section.
5. the control device of circuit breaker as claimed in claim 1 or 2 is characterized in that,
Make described electric quantity data not remain on described storage part by described arithmetic processing section.
6. the control method of a circuit breaker is characterized in that,
When generating the actuating signal that makes circuit breaker action usefulness according to action command, the electric quantity data of the expression magnitude of voltage of the AC electric power systems that circuit breaker connected or current value is carried out the sampling action of specified period, collect electric quantity data, and keep from the previous cycle of present moment with interior described electric quantity data, the electric quantity data that described electric quantity data is obtained as the waveform according to the fundamental component of described AC electric power systems simultaneously, electric quantity data according to described maintenance is obtained amplitude, phase place, and DC component, thereby predict the quantity of electricity waveform of described AC electric power systems, and generate described actuating signal according to described prediction waveform.
7. the control method of a circuit breaker is characterized in that,
When generating the actuating signal that makes the circuit breaker action according to action command, cycle with regulation is collected sampled data to the expression magnitude of voltage of the AC electric power systems that circuit breaker was connected or the electric quantity data of current value, and keep from the previous cycle of up-to-date sampled data with interior described electric quantity data, the electric quantity data that described electric quantity data is obtained as the waveform according to the fundamental component of described AC electric power systems simultaneously, electric quantity data according to described maintenance is obtained amplitude, phase place and DC component, thereby predict the quantity of electricity waveform of described AC electric power systems, and generate described actuating signal according to described prediction waveform.
8. as the control method of claim 6 or 7 described circuit breakers, it is characterized in that,
According to the maximum and the minimum value of described electric quantity data with provide moment of the maximum and the minimum value of described electric quantity data, thereby obtain amplitude, phase place and the DC component of the electric weight waveform in the described AC electric power systems.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002263456A JP3710442B2 (en) | 2002-09-10 | 2002-09-10 | Circuit breaker control device and control method |
| CNB2004100286382A CN100337294C (en) | 2002-09-10 | 2004-03-08 | Controller and control method of circuit breaker |
| HK06104918A HK1084773A1 (en) | 2002-09-10 | 2006-04-25 | A control device and method for a breaker |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002263456A JP3710442B2 (en) | 2002-09-10 | 2002-09-10 | Circuit breaker control device and control method |
| CNB2004100286382A CN100337294C (en) | 2002-09-10 | 2004-03-08 | Controller and control method of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1725408A CN1725408A (en) | 2006-01-25 |
| CN100337294C true CN100337294C (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100286382A Expired - Fee Related CN100337294C (en) | 2002-09-10 | 2004-03-08 | Controller and control method of circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3710442B2 (en) |
| CN (1) | CN100337294C (en) |
| HK (1) | HK1084773A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022958A (en) * | 2012-12-17 | 2013-04-03 | 湖北省电力公司检修分公司 | Direct current circuit breaker charging device control system and control method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1990929A1 (en) * | 2007-05-08 | 2008-11-12 | Feelux Co., Ltd. | Power line communication apparatus, and method and apparatus for controlling electric devices |
| CN102522261B (en) * | 2011-12-31 | 2015-06-10 | 北京赛德高科铁道电气科技有限责任公司 | Soft-switching controller for vacuum circuit breaker |
| CN103698694A (en) * | 2012-09-28 | 2014-04-02 | 四川奥格科技有限公司 | Online monitoring system for high-voltage circuit breaker |
| JP7042436B2 (en) * | 2017-06-19 | 2022-03-28 | パナソニックＩｐマネジメント株式会社 | Discrimination system, discrimination method, and program |
| CN113126547B (en) * | 2021-04-20 | 2022-07-12 | 江西仪能新能源微电网协同创新有限公司 | Switching-on and switching-off control method of intelligent arc extinguishing controller of switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000011824A (en) * | 1998-06-23 | 2000-01-14 | Mitsubishi Electric Corp | Power switch control device |
-
2002
- 2002-09-10 JP JP2002263456A patent/JP3710442B2/en not_active Expired - Fee Related
-
2004
- 2004-03-08 CN CNB2004100286382A patent/CN100337294C/en not_active Expired - Fee Related
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2006
- 2006-04-25 HK HK06104918A patent/HK1084773A1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000011824A (en) * | 1998-06-23 | 2000-01-14 | Mitsubishi Electric Corp | Power switch control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022958A (en) * | 2012-12-17 | 2013-04-03 | 湖北省电力公司检修分公司 | Direct current circuit breaker charging device control system and control method thereof |
| CN103022958B (en) * | 2012-12-17 | 2015-02-25 | 国家电网公司 | Direct current circuit breaker charging device control system and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1725408A (en) | 2006-01-25 |
| JP3710442B2 (en) | 2005-10-26 |
| JP2004103385A (en) | 2004-04-02 |
| HK1084773A1 (en) | 2006-08-04 |
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