CN109165850A - A kind of the VFTO pilot system and method for evaluable electrical secondary system reliability - Google Patents
A kind of the VFTO pilot system and method for evaluable electrical secondary system reliability Download PDFInfo
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Abstract
The invention discloses the VFTO pilot systems and method of a kind of evaluable electrical secondary system reliability.System includes supervisory control desk subsystem, impulse voltage generator subsystem and electrical secondary system fail-safe analysis subsystem.The application utilizes supervisory control desk subsystem, impulse voltage generator subsystem, generates the compound overvoltage of VFTO after lightning stroke flashover a kind of, and variation, simulation field working conditions can be adjusted in Lightning Over-voltage and VFTO overvoltage parameter.In addition, compared to research scene to the inconvenience of electrical secondary system reliability consideration, the present invention is simple using one kind, convenient, and operable method acts on lower electrical secondary system hardware fault to the compound overvoltage of VFTO after lightning stroke flashover and software fault carries out reliability test respectively.
Description
Technical field
This disclosure relates to which the VFTO of electrical secondary system technical field more particularly to a kind of evaluable electrical secondary system reliability is tested
System and method.
Background technique
At this stage, in the whole nation, progress optimizes configuration to energy resources on a large scale, and China has gradually formed Xi electricity Dong
It send, the wide area complex electric network of trans-regional interconnection.Northeast China Power Grid, North China Power Telecommunication Network, Northwest Grid, Central China Power Grid, East China Power Grid and
South electric network has a degree of association.After electric system is broken down, in addition to meeting sabotage of electrical power equipment, electric power can be also given
Production and the normal production of all conglomeraties affect, or even can threaten to society's electricity consumption.It is used in electrical secondary system various
Sensor technology, wide-area communication and the information processing technology may be implemented the real-time perception of power transmission and transformation equipment state, supervise in real time
Survey, fault pre-alarming, diagnostic analysis, prediction and assessment.
(VFTO i.e. very fast transient overvoltage is by many outdoor VFTO after electrical secondary system is subject to lightning stroke flashover
Refer to the transient overvoltage in wave front time 3 to 100ns, the factors such as operation for the disconnecting switch being primarily due in GIS cause) answer
It closes overvoltage the failure caused by electrical secondary system, Lightning Over-voltage and VFTO overvoltage are all difficult to capture, therefore is difficult
The compound overvoltage of VFTO after lightning stroke flashover assesses the influence generated in electrical secondary system.Therefore, it is necessary to a kind of simple,
It is convenient, operable method to after lightning stroke flashover VFTO compound overvoltage effect under in electrical secondary system reliability test method pair
It is assessed in electrical secondary system reliability.
Summary of the invention
The VFTO pilot system and method for a kind of evaluable electrical secondary system reliability are provided in the embodiment of the present invention, mainly
The compound overvoltage of VFTO after studying lightning stroke flashover be can be realized to the reliability test in electrical secondary system, to solve the prior art
Present in technical problem.
In a first aspect, the present invention provides a kind of VFTO pilot system of evaluable electrical secondary system reliability, it is described to comment
The VFTO pilot system of valence electrical secondary system reliability successively include: supervisory control desk subsystem, impulse voltage generator subsystem and
Electrical secondary system fail-safe analysis subsystem, output end and the impulse voltage generator subsystem phase of the supervisory control desk subsystem
It connects, and VFTO high-voltage pulse is loaded onto electrical secondary system to be measured, while by electrical secondary system reliable analyzing subsystem to it
It is evaluated, wherein
The supervisory control desk subsystem includes the supervisory control desk and pulse amplitude control channel of electrical connection, the supervisory control desk
It is controlled for carrying out gas circuit control, charge control and triggering to the impulse voltage generator subsystem；
The impulse voltage generator subsystem includes the trigger control module being sequentially connected, impulse generator, lightning stroke arteries and veins
Cable and VFTO pulse loaded cable are rushed, the trigger control module is electrically connected with the pulse amplitude control channel, for controlling
Make the compound overvoltage that the impulse generator exports VFTO after lightning stroke flashover；
The electrical secondary system fail-safe analysis subsystem is included in electrical secondary system and respectively with described in electrical secondary system electricity
The PC machine of connection and equipment monitored, the impulse generator load electricity by the lightning stroke pulse cable and the VFTO pulse
Cable is electrically connected with described in electrical secondary system.
Preferably, the supervisory control desk further includes pulse-triggered button, charging trigger button, emergency stop button and delay
Time series setter, wherein
The pulse-triggered button is for being adjusted pulse triggering signal；
The charging trigger button is used to that charging trigger signal to be adjusted；
Emergency stop button is out of service for force to the VFTO pilot system of evaluable electrical secondary system reliability；
The delay time sequence setter is used for the ginseng to VFTO overvoltage and the waveform signal of lightning stroke flashover overvoltage
Number is adjusted.
Preferably, the trigger control module further include chromacoder, double power supply automatic transfer switch, channel A and
Channel B, wherein
The chromacoder and the double power supply automatic transfer switch electrical connection, one end of the channel A with it is described
Double power supply automatic transfer switch electrical connection, the other end of the channel A are electrically connected with the impulse generator, the channel B's
One end is electrically connected with the double power supply automatic transfer switch, and the other end of the channel A is electrically connected with the impulse generator, institute
Double power supply automatic transfer switch is stated for switching over to the channel A and the channel B.
Preferably, the impulse generator further include: the first wall bushing and third wall bushing, first set through walls
One end of pipe is connected with the channel A, and the other end of first wall bushing is crossed spark ball gap with the 6th and is electrically connected, and described the
Six other ends for crossing spark ball gap are electrically connected with the 4th resistor, the 5th spark ball gap, the 6th resistor respectively, the 4th electricity
The other end of resistance device is electrically connected with the 5th capacitor, the 4th spark ball gap and 3rd resistor device respectively, the 3rd resistor device
The other end is electrically connected with the second harmonic module and the 4th capacitor respectively, the other end of the second harmonic module and lightning stroke pulse
The other end of the electrical connection of spark ball gap generator, the lightning stroke pulse spark ball gap generator is electrically connected with the 5th wall bushing,
The other end of 5th wall bushing is electrically connected with lightning stroke pulse cable, and the lightning stroke pulse cable passes through lightning stroke pulse input
Cable is electrically connected with the third wall bushing；
The third wall bushing input terminal is also electrically connected with the channel B, the other end of the third wall bushing with
The electrical connection of first spark ball gap, the other end of the first spark ball gap respectively with first capacitor device, the second spark ball gap and the
One resistor electrical connection, the other end of the first resistor device respectively with the second capacitor, second resistor and third spark ball
Gap electrical connection, the other end of the second resistor are electrically connected with third capacitor and the first harmonic module respectively, and described first
The other end of harmonic module is electrically connected with the 4th wall bushing, and the other end of the 4th wall bushing passes through pulse steeping gap
It is electrically connected with insulating barrier (44) with VFTO pulse loaded cable；
One end of first charging resistor is electrically connected the first capacitor device and the 6th resistor, and described first fills
The other end of resistance is electrically connected the second spark ball gap, the 5th spark ball gap, second capacitor, described
5th capacitor and the second charging resistor, the other end of second charging resistor be electrically connected the third spark ball gap,
The 4th spark ball gap, the third capacitor and the 4th capacitor.
Second aspect, the present invention also provides a kind of VFTO test methods of evaluable electrical secondary system reliability, are applied to
The VFTO pilot system of above-mentioned evaluable electrical secondary system reliability, comprising:
Step1: building hookup and checkout facility circuit；
Step2: lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter are determined, by supervisory control desk to lightning stroke flashover mistake
Voltage is configured with VFTO overvoltage parameter amplitude, wave head time, wavelength time；
Step3: setting lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter, first pass through thunder by impulse generator
Shock pulse output cable output lightning stroke pulse surge, then VFTO pulse surge is exported by VFTO pulse loaded cable, most
It is acted in the form of the compound overvoltage of VFTO after lightning stroke flashover in electrical secondary system afterwards；
Step4: being united by PC machine in electrical secondary system time between failures t, number of stoppages n, equipment sum N
Meter, and the reliability in electrical secondary system is assessed.
Preferably, the stepThe assessment formula that the reliability in electrical secondary system is assessed in 4 are as follows:
λh=nh/Nht (1)
λs=ns/Nst (2)
Wherein, λhFor hardware failure rate, λsFor software failure rate, nhFor electrical secondary system reliability test electrical secondary system because
The number of faults that hardware occurs, Nh、NsFor electrical secondary system reliability test electrical secondary system sum, t provides the time of test, nsIt is two
Subsystem reliability test electrical secondary system is because of the number of faults that software occurs, T electrical secondary system average time between failures, RT(t)
Electrical secondary system comprehensive reliability；
When R (t) ∈ (90%, 100%), illustrate very reliable in electrical secondary system；
When R (t) ∈ (80%, 90%), illustrate reliable in electrical secondary system；
When R (t) ∈ (70%, 80%), it is unreliable in electrical secondary system to illustrate；
When R (t) ∈ (0%, 70%), illustrate not being available in electrical secondary system.
The application's has the beneficial effect that:
The present invention provides the test methods and system of a kind of deterioration of surface of composite insulator performance.System includes master control
Station subsystem, impulse voltage generator subsystem and electrical secondary system fail-safe analysis subsystem, wherein supervisory control desk subsystem packet
Include the supervisory control desk and pulse amplitude control channel of electrical connection；Impulse voltage generator subsystem includes the triggering control being sequentially connected
Molding block, impulse generator, lightning stroke pulse cable and VFTO pulse loaded cable, trigger control module and pulse amplitude control are logical
Road electrical connection, the compound overvoltage of VFTO after lightning stroke flashover is exported for controlling impulse generator；Electrical secondary system fail-safe analysis
Subsystem include in electrical secondary system and respectively with the PC machine being electrically connected in electrical secondary system and equipment monitored, the arteries and veins
It rushes generator and is electrically connected with described in electrical secondary system by the lightning stroke pulse cable and the VFTO pulse loaded cable.This Shen
Supervisory control desk subsystem, impulse voltage generator subsystem please be utilize, the compound overvoltage of VFTO after lightning stroke flashover a kind of is generated,
And variation can be adjusted in Lightning Over-voltage and VFTO overvoltage parameter, simulate field working conditions.In addition, existing compared to research
To the inconvenience of electrical secondary system reliability consideration, the present invention is simple using one kind for field, convenient, and operable method is to lightning stroke sudden strain of a muscle
The compound overvoltage of VFTO acts on lower electrical secondary system hardware fault after network and software fault carries out reliability test respectively.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that a kind of structure of the VFTO pilot system of evaluable electrical secondary system reliability provided by the embodiments of the present application is shown
It is intended to；
Fig. 2 is a kind of process of the VFTO test method of evaluable electrical secondary system reliability provided by the embodiments of the present application
Figure.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Referring to FIG. 1, showing a kind of VFTO test of evaluable electrical secondary system reliability provided by the embodiments of the present application
The structural schematic diagram of system.As seen from Figure 1, the VFTO pilot system of the evaluable electrical secondary system reliability successively includes: total
Control station subsystem, impulse voltage generator subsystem and electrical secondary system fail-safe analysis subsystem, the supervisory control desk subsystem
The output end of system connects with impulse voltage generator subsystem, and VFTO high-voltage pulse is loaded onto electrical secondary system to be measured, together
When it is evaluated by electrical secondary system reliable analyzing subsystem, wherein
The supervisory control desk subsystem includes the supervisory control desk 1 and pulse amplitude control channel 6 of electrical connection, the master control
Platform 1 is used to carry out the impulse voltage generator subsystem gas circuit control, charge control and triggering to control；
The impulse voltage generator subsystem includes the trigger control module 7 being sequentially connected, impulse generator 14, lightning stroke
Pulse cable 41 and VFTO pulse loaded cable 43, the trigger control module 7 are electrically connected with the pulse amplitude control channel 6
It connects, the compound overvoltage of VFTO after lightning stroke flashover is exported for controlling the impulse generator 14；
The electrical secondary system fail-safe analysis subsystem is included in electrical secondary system 47 and with described in 47 electricity of electrical secondary system
The PC machine 49 of connection, the impulse generator 14 by the lightning stroke pulse cable 41 and the VFTO pulse loaded cable 43 with
It is described to be electrically connected in electrical secondary system 47.
In addition, impulse generator 14 further includes the second wall bushing 16, one end of the second wall bushing 16 in the present embodiment
Ground connection, the other end are electrically connected with the first charging resistor 39.The main purpose of second wall bushing 16 ground connection is to increase entirety
The insulation performance of equipment, since under VFTO effect, pulse amplitude is very high, thus may under extreme conditions, so that casing table
There is the presence of leakage current in face, and long term can damage insulation.In addition, forming one with capacitor when carrying out capacitor charging
Close access, so that charging process is gone on smoothly.Therefore casing is grounded, can not only realizes charge function, but also can inhibit insulation
Damage effect.
The application utilizes supervisory control desk subsystem, impulse voltage generator subsystem, generates VFTO after a kind of lightning stroke flashover
Compound overvoltage, and variation, simulation field working conditions can be adjusted in Lightning Over-voltage and VFTO overvoltage parameter.Separately
Outside, compared to research scene to the inconvenience of on-line detecting system reliability consideration, the present invention is simple using one kind, convenient,
Operable method to after lightning stroke flashover VFTO compound overvoltage effect under in electrical secondary system reliability test method.
The application utilizes supervisory control desk subsystem, impulse voltage generator subsystem, generates VFTO after a kind of lightning stroke flashover
Compound overvoltage, and variation, simulation field working conditions can be adjusted in Lightning Over-voltage and VFTO overvoltage parameter.Separately
Outside, compared to research scene to the inconvenience of electrical secondary system reliability consideration, the present invention is simple using one kind, convenient, can grasp
The method of work acts on lower electrical secondary system hardware fault to the compound overvoltage of VFTO after lightning stroke flashover and carries out respectively with software fault
Reliability test.
In addition, the supervisory control desk 1 further includes pulse-triggered button 2 (to trigger table in Fig. 1 in the embodiment of the present application
Show), charging trigger button 3 (in Fig. 1 with charging indicates), emergency stop button 4 (being indicated in Fig. 1 with braking) and delay time sequence
Column setter 5 (is indicated in Fig. 1 with setting), wherein the pulse-triggered button 2 is for being adjusted pulse triggering signal；
The charging trigger button 3 is used to that charging trigger signal to be adjusted；Emergency stop button 4 is used for evaluable electrical secondary system
The VFTO pilot system of reliability force out of service；The delay time sequence setter 5 is used for VFTO overvoltage
It is adjusted with the parameter of the waveform signal of lightning stroke flashover overvoltage.
Specifically, supervisory control desk 1 carries out gas circuit control by generation system of the control circuit on device to compound overvoltage
System, charge control, triggering control, so that the overvoltage parameter to generation is adjusted；When starting impulse trigger button 2, always
Pulse triggering signal can be adjusted in console；When trigger button 3 is charged in starting, supervisory control desk 1 can be to charging triggering letter
It number is adjusted；Emergency stop button 4 is out of service for forcing to carry out system, shields to circuit；Delay time
Sequence setter 5 is used to that the parameter of the waveform signal of VFTO and Lightning Over-voltage to be adjusted；Pulse amplitude control channel 6
Gas circuit control signal, charging control signal, Trig control signal to supervisory control desk carry out analysis and arrangement, then control triggering
Module is controlled.
Pulse-triggered button 2, charging trigger button 3, emergency stop button 4 and delay time sequence setter 5 are only total
The hardware being arranged outside console 1, being connected with these buttons is the processing module that can be realized corresponding function, for example, arteries and veins
Rush trigger button 2 be correspondingly connected with pulse-triggered module, charging trigger button 3 be correspondingly connected with charging trigger module, emergency braking by
Button 4 is correspondingly connected with emergency braking module.
In addition, trigger control module 7 further includes chromacoder 8, double power supply automatic transfer switch 9, channel A10 and leads to
Road B11, wherein the chromacoder 8 and the double power supply automatic transfer switch 9 are electrically connected, one end of the channel A10
It being electrically connected with the double power supply automatic transfer switch 9, the other end of the channel A10 is electrically connected with the impulse generator 14,
One end of the channel B11 is electrically connected with the double power supply automatic transfer switch 9, the other end and the arteries and veins of the channel A10
The electrical connection of generator 14 is rushed, the double power supply automatic transfer switch 9 is for cutting the channel A10 and the channel B11
It changes.The Trig control signal that pulse amplitude control channel is set by obtaining supervisory control desk 1, then to double power-supply automatic transferring
Switch 9 is controlled, and different trigger signals can be generated.The setting parameter of lightning stroke pulse surge signal enters channel A10；
The setting parameter of VFTO signal enters channel B11.
In the embodiment of the present application, impulse generator 14 further include: the first wall bushing 15 and third wall bushing 17, it is described
One end of first wall bushing 15 is connected with the channel A10, and the other end of first wall bushing 15 and the 6th crosses spark
Ball gap 38 is electrically connected, the described 6th cross the other end of spark ball gap 38 respectively with the 4th resistor 35, the 5th spark ball gap 36, the
Six resistors 37 electrical connection, the other end of the 4th resistor 35 respectively with the 5th capacitor 34, the 4th spark ball gap 33 and
3rd resistor device 32 be electrically connected, the other end of the 3rd resistor device 32 respectively with the second harmonic module 30 and the 4th capacitor 31
The other end of electrical connection, the second harmonic module 30 is electrically connected with lightning stroke pulse spark ball gap generator 27, the lightning stroke arteries and veins
The other end for rushing spark ball gap generator 27 is electrically connected with the 5th wall bushing 29, the other end of the 5th wall bushing 29 with
The pulse cable 41 that is struck by lightning is electrically connected, and the lightning stroke pulse cable 41 passes through lightning stroke pulse input cable 42 and third set through walls
Pipe 17 is electrically connected.
17 input terminal of third wall bushing is also electrically connected with the channel B11, the third wall bushing 17 it is another
One end is electrically connected with the first spark ball gap 18, the other end of the first spark ball gap 18 respectively with first capacitor device 19, second
Spark ball gap 20 and first resistor device 21 are electrically connected, the other end of the first resistor device 21 respectively with the second capacitor 22, the
Two resistors 23 and third spark ball gap 24 are electrically connected, the other end of the second resistor 23 respectively with third capacitor 25 and
The electrical connection of first harmonic module 26, the other end of the first harmonic module 26 is electrically connected with the 4th wall bushing 28, and described the
The other end of four wall bushings 28 is electrically connected by pulse steeping gap 45 and insulating barrier 44 with VFTO pulse loaded cable 43.
One end of first charging resistor 39 is electrically connected the first capacitor device 19 and the 6th resistor 37, described
The other end of first charging resistor 39 is electrically connected the second spark ball gap 20, the 5th spark ball gap 36, described
The other end of two capacitors 22, the 5th capacitor 34 and the second charging resistor 40, second charging resistor 40 is electric respectively
Connect the third spark ball gap 24, the 4th spark ball gap 33, the third capacitor 25 and the 4th capacitor 31.
Wherein, pulse steeping gap 45 is the impulse waveform that will be generated via spark gap, carries out further steepness processing, so that should
The rise time of impulse waveform is shorter, and amplitude is bigger, as above-mentioned steep-front VFTO waveform.
When trigger signal is by channel A10, using the first cable of channel A connection 12, finally by the first wall bushing
15, after trigger signal passes through the first wall bushing 15, using the 6th spark ball gap 38, the 6th capacitor 37, the 5th spark ball
Gap 36, the 4th resistor 35, the 5th capacitor 34, the 4th spark ball gap 33,3rd resistor device 32, the 4th capacitor 31, first
Then charging resistor 39, the second charging resistor 40 carry out the second harmonic module 30 and are adjusted to waveform, finally by lightning stroke arteries and veins
Spark ball gap generator 27, the 5th wall bushing 29 are rushed, lightning stroke pulse cable 41 exports Lightning Over-voltage, output lightning stroke pulse
Voltage passes through lightning stroke 42 feed back input of the second cable of pulse input to third wall bushing 17.
When trigger signal is by channel B11, using channel B11 connection third cable 13, finally by third set through walls
Pipe 17, trigger signal is by third wall bushing 17, by the first spark ball gap 18, first capacitor device 19, the second spark ball gap
20, first resistor device 21, the second capacitor 22, second resistor 23, third spark ball gap 24, third capacitor 25, first fills
Then resistance 39, the second charging resistor 40 carry out waveform adjustment by the first harmonic module 26, finally by the 4th set through walls
Insulating barrier 44 in pipe 28, VFTO pulse loaded cable 43, it is excessively electric that pulse steeping gap 45 exports VFTO pulse.
Referring to FIG. 2, showing a kind of VFTO test of evaluable electrical secondary system reliability provided by the embodiments of the present application
The flow chart of method.This method is applied to the pilot system provided in above-described embodiment.From Figure 2 it can be seen that this method comprises:
StepS100: hookup and checkout facility circuit are built.
Specifically, according to preferred circuit described in the description of the line relationship of component each in above system and attached drawing 1 into
Row check circuit connection point whether with the presence of miss, wrong, the insecure hidden danger of tie point.
StepS200: determining lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter, is dodged by 1 pair of lightning stroke of supervisory control desk
Network overvoltage is configured with VFTO overvoltage parameter amplitude, wave head time, wavelength time.
The parameter of lightning stroke flashover overvoltage or the parameter of VFTO overvoltage, are the actual conditions by being probed into determine
, and pass through control first capacitor device, the second capacitor and third capacitor or the 4th capacitor, the 5th capacitor and the
The distance in charging time of six capacitors, voltage and steepness gap, can be to the ginseng of lightning stroke flashover overvoltage or VFTO overvoltage
Number is configured.
Its amplitude is arranged by starting impulse trigger button in Lightning Over-voltage, is distinguished by delay time sequence setter
Wave head time, wavelength time are set；When trigger button is charged in starting, supervisory control desk carries out amplitude adjusting to VFTO, then leads to
It crosses delay time sequence setter and wave head time, wavelength time is respectively set.
StepS300: setting lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter, first by impulse generator 14
VFTO pulse is exported by the lightning stroke output lightning stroke pulse surge of pulse output cable 41, then by VFTO pulse loaded cable 43
Overvoltage is finally acted in the form of the compound overvoltage of VFTO after lightning stroke flashover in electrical secondary system 47.
StepS400: by PC machine 49 in electrical secondary system time between failures t, number of stoppages n, equipment sum N into
Row statistics, and the reliability in electrical secondary system is assessed.
Wherein, the assessment formula of assessment are as follows:
λh=nh/Nht (1)
λs=ns/Nst (2)
Wherein, λhFor hardware failure rate, λsFor software failure rate, nhFor electrical secondary system reliability test electrical secondary system because
The number of faults that hardware occurs, Nh、NsFor electrical secondary system reliability test electrical secondary system sum, t provides the time of test, nsIt is two
Subsystem reliability test electrical secondary system is because of the number of faults that software occurs, T electrical secondary system average time between failures, RT(t)
Electrical secondary system comprehensive reliability；
When R (t) ∈ (90%, 100%), illustrate very reliable in electrical secondary system；
When R (t) ∈ (80%, 90%), illustrate reliable in electrical secondary system；
When R (t) ∈ (70%, 80%), it is unreliable in electrical secondary system to illustrate；
When R (t) ∈ (0%, 70%), illustrate not being available in electrical secondary system.
Can by observation hardware is damaged, electrical secondary system can not start, without display output etc. hardware faults n can be obtainedh；
When the driver installation of electrical secondary system equipment is incorrect, equipment is caused not to be available or insufficiency, used in system
N cannot can be obtained with software faults such as hardware compatibilities in softwares；Nh、NsFor electrical secondary system reliability test electrical secondary system sum；T is
Provide the time of test.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein as separation
The unit of part description may or may not be physically separated, component shown as a unit can be or
It can not be physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to reality
Border needs to select some or all of the modules therein to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art
It can understand and implement without creative efforts.
The above is only a specific embodiment of the invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (6)
1. a kind of VFTO pilot system of evaluable electrical secondary system reliability, which is characterized in that the reliability of the electrical secondary system
Pilot system successively includes: supervisory control desk subsystem, impulse voltage generator subsystem and electrical secondary system fail-safe analysis subsystem
System, the output end of the supervisory control desk subsystem connects with the impulse voltage generator subsystem, and by VFTO high-voltage pulse
It is loaded onto electrical secondary system to be measured, while it is evaluated by the electrical secondary system reliable analyzing subsystem, wherein
The supervisory control desk subsystem includes the supervisory control desk (1) and pulse amplitude control channel (6) of electrical connection, the master control
Platform (1) is used to carry out the impulse voltage generator subsystem gas circuit control, charge control and triggering to control；
The impulse voltage generator subsystem includes the trigger control module (7) being sequentially connected, impulse generator (14), lightning stroke
Pulse cable (41) and VFTO pulse loaded cable (43), the trigger control module (7) and the pulse amplitude control channel
(6) it is electrically connected, the compound overvoltage of VFTO after lightning stroke flashover is exported for controlling the impulse generator (14)；
The electrical secondary system fail-safe analysis subsystem is included in electrical secondary system (47) and with described in electrical secondary system (47) electricity
The PC machine (49) of connection, the impulse generator (14) load electricity by the lightning stroke pulse cable (41) and the VFTO pulse
Cable (43) is electrically connected with described in electrical secondary system (47).
2. the VFTO pilot system of evaluable electrical secondary system reliability according to claim 1, which is characterized in that described total
Console (1) further includes pulse-triggered button (2), charging trigger button (3), emergency stop button (4) and delay time sequence
Setter (5), wherein
The pulse-triggered button (2) is for being adjusted pulse triggering signal；
The charging trigger button (3) is used to that charging trigger signal to be adjusted；
Emergency stop button (4) is out of service for force to the VFTO pilot system of evaluable electrical secondary system reliability；
The delay time sequence setter (5) is used for the parameter to VFTO overvoltage and the waveform signal of lightning stroke flashover overvoltage
It is adjusted.
3. the VFTO pilot system of evaluable electrical secondary system reliability according to claim 1, which is characterized in that the touching
Sending out control module (7) further includes chromacoder (8), double power supply automatic transfer switch (9), channel A (10) and channel B
(11), wherein
The chromacoder (8) and the double power supply automatic transfer switch (9) electrical connection, one end of the channel A (10)
It is electrically connected with the double power supply automatic transfer switch (9), the other end of the channel A (10) and the impulse generator (14) electricity
Connection, one end of the channel B (11) is electrically connected with the double power supply automatic transfer switch (9), the channel A (10) it is another
End is electrically connected with the impulse generator (14), and the double power supply automatic transfer switch (9) is used for the channel A (10) and institute
Channel B (11) is stated to switch over.
4. the VFTO pilot system of evaluable electrical secondary system reliability according to claim 3, which is characterized in that the arteries and veins
Rush generator (14) further include: the first wall bushing (15) and third wall bushing (17), first wall bushing (15)
One end is connected with the channel A (10), and the other end of first wall bushing (15) crosses spark ball gap (38) with the 6th and is electrically connected
Connect, it is described 6th cross spark ball gap (38) the other end respectively with the 4th resistor (35), the 5th spark ball gap (36), the 6th electricity
Hinder device (37) electrical connection, the other end of the 4th resistor (35) respectively with the 5th capacitor (34), the 4th spark ball gap
(33) with 3rd resistor device (32) be electrically connected, the other end of the 3rd resistor device (32) respectively with the second harmonic module (30) and
The electrical connection of 4th capacitor (31), the other end of the second harmonic module (30) and lightning stroke pulse spark ball gap generator (27)
The other end of electrical connection, lightning stroke pulse spark ball gap generator (27) is electrically connected with the 5th wall bushing (29), and described the
The other end of five wall bushings (29) is electrically connected with lightning stroke pulse cable (41), and the lightning stroke pulse cable (41) passes through lightning stroke arteries and veins
Input cable (42) is rushed to be electrically connected with the third wall bushing (17)；
Third wall bushing (17) input terminal is also electrically connected with the channel B (11), the third wall bushing (17)
The other end is electrically connected with the first spark ball gap (18), the other end of the first spark ball gap (18) respectively with first capacitor device
(19), the second spark ball gap (20) and first resistor device (21) electrical connection, the other end of the first resistor device (21) respectively with
Second capacitor (22), second resistor (23) and third spark ball gap (24) electrical connection, the second resistor (23) it is another
One end is electrically connected with third capacitor (25) and the first harmonic module (26) respectively, the other end of the first harmonic module (26)
It is electrically connected with the 4th wall bushing (28), the other end of the 4th wall bushing (28) is by pulse steeping gap (45) and absolutely
Edge partition (44) is electrically connected with VFTO pulse loaded cable (43)；
One end of first charging resistor (39) is electrically connected the first capacitor device (19) and the 6th resistor (37), and described the
The other end of one charging resistor (39) is electrically connected the second spark ball gap (20), the 5th spark ball gap (36), institute
The second capacitor (22), the 5th capacitor (34) and the second charging resistor (40) are stated, second charging resistor (40)
The other end is electrically connected the third spark ball gap (24), the 4th spark ball gap (33), the third capacitor (25)
With the 4th capacitor (31).
5. a kind of VFTO test method of evaluable electrical secondary system reliability, applied to described in claim 1-4 any one
The VFTO pilot system of evaluable electrical secondary system reliability characterized by comprising
Step1: building hookup and checkout facility circuit；
Step2: lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter are determined, by supervisory control desk (1) to lightning stroke flashover mistake
Voltage and VFTO Overvoltage Amplitude, wave head time, wavelength time, VFTO overvoltage parameter are configured；
Step3: setting lightning stroke flashover overvoltage parameter and VFTO overvoltage parameter, first pass through thunder by impulse generator (14)
Shock pulse output cable (41) output lightning stroke pulse surge, then VFTO pulse is exported by VFTO pulse loaded cable (43)
Voltage is finally acted in the form of the compound overvoltage of VFTO after lightning stroke flashover in electrical secondary system (47)；
Step4: being united by PC machine (49) in electrical secondary system time between failures t, number of stoppages n, equipment sum N
Meter, and the reliability in electrical secondary system is assessed.
6. the VFTO test method of evaluable electrical secondary system reliability according to claim 5, which is characterized in that the stepThe assessment formula that the reliability in electrical secondary system is assessed in 4 are as follows:
λh=nh/Nht (1)
λs=ns/Nst (2)
Wherein, λhFor hardware failure rate, λsFor software failure rate, nhFor electrical secondary system reliability test electrical secondary system because of hardware
The number of faults of generation, Nh、NsFor electrical secondary system reliability test electrical secondary system sum, t provides the time of test, nsFor secondary system
Reliability test electrical secondary system of uniting is because of the number of faults that software occurs, T electrical secondary system average time between failures, RT(t) secondary
System comprehensive reliability；
When R (t) ∈ (90%, 100%), illustrate very reliable in electrical secondary system；
When R (t) ∈ (80%, 90%), illustrate reliable in electrical secondary system；
When R (t) ∈ (70%, 80%), it is unreliable in electrical secondary system to illustrate；
When R (t) ∈ (0%, 70%), illustrate not being available in electrical secondary system.
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| CN201810980544.7A CN109165850B (en) | 2018-08-27 | 2018-08-27 | VFTO test system and method capable of evaluating reliability of secondary system |
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| CN201810980544.7A CN109165850B (en) | 2018-08-27 | 2018-08-27 | VFTO test system and method capable of evaluating reliability of secondary system |
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|---|---|---|---|---|
| CN101846722A (en) * | 2009-03-25 | 2010-09-29 | 特变电工沈阳变压器集团有限公司 | Chopped wave lightning impulse test device and method of transformer |
| CN204086334U (en) * | 2014-07-30 | 2015-01-07 | 中国铁道科学研究院 | A kind of two-circuit surge generator |
| US20180080989A1 (en) * | 2016-03-11 | 2018-03-22 | Maintenance & Test Centre, Csg Ehv Power Transmission Company | Assessment method for flashover faults of 220 kv or higher porcelain live tank circuit breaker |
| CN108008261A (en) * | 2017-11-28 | 2018-05-08 | 国家电网公司 | A kind of substation field lightning impulse and vibration lightning impulse voltage test device |
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2018
- 2018-08-27 CN CN201810980544.7A patent/CN109165850B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846722A (en) * | 2009-03-25 | 2010-09-29 | 特变电工沈阳变压器集团有限公司 | Chopped wave lightning impulse test device and method of transformer |
| CN204086334U (en) * | 2014-07-30 | 2015-01-07 | 中国铁道科学研究院 | A kind of two-circuit surge generator |
| US20180080989A1 (en) * | 2016-03-11 | 2018-03-22 | Maintenance & Test Centre, Csg Ehv Power Transmission Company | Assessment method for flashover faults of 220 kv or higher porcelain live tank circuit breaker |
| CN108008261A (en) * | 2017-11-28 | 2018-05-08 | 国家电网公司 | A kind of substation field lightning impulse and vibration lightning impulse voltage test device |
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| CN109165850B (en) | 2022-04-05 |
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