CN104242255B - A kind of GIS is with the ac voltage withstanding controlling test guard method of frequency homophase and system - Google Patents
A kind of GIS is with the ac voltage withstanding controlling test guard method of frequency homophase and system Download PDFInfo
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Abstract
The invention discloses a kind of GIS is with frequency homophase ac voltage withstanding controlling test guard method, including frequency plot protection, high pressure overvoltage protection and high pressure arc protection；Reference voltage level and test voltage value are obtained first and calculate difference on the frequency and phase difference；Then each magnitude of voltage, phase difference and default protection definite value are compared；Finally judge whether that at least a kind of protection meets operation condition；If it is not, then with frequency homophase power supply normal work；If it is, deenergization.The method that the present invention is provided, is applied to same frequency homophase ac voltage withstanding test, integrates protection, control, measurement three zones；Compared to existing control guard method, the frequency plot guard method judged based on frequency plot that the present invention is provided and the overvoltage for isolation fracture, arc protection can be prevented effectively from the emergency cases such as frequency of occurrences phase place in same frequency homophase ac voltage withstanding test is inconsistent and isolation fracture punctures and cause danger to runtime, testing equipment and the person.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of GIS is with frequency homophase ac voltage withstanding controlling test protection side
Method and system.
Background technology
Cubicle Gas-Insulated Switchgear (hereinafter referred to as GIS) is applied more and more extensively in power system, but GIS
After interval enlarging and maintenance (particularly double bus scheme GIS), it is required to carry out in the case of original operation brownout
Pressure test.GIS expansion spacings or Disintegration overhaul interval are only disconnected by disconnecting switch with adjacent operation part, if operation part
Do not have a power failure, then keep apart during ac voltage withstanding at shut-off mouth it may happen that test voltage causes to isolate with the reverse superposition of working voltage
Fracture punctures and then jeopardizes the situation of operation equipment, therefore the pressure examinations of standard regulation GIS such as DL/T555, DL/T617, DL/T618
When testing, neighbouring device is answered power-off and is grounded, and is otherwise considered as taking measures the damage that original part is caused due to puncturing suddenly.
And for some important load-center substations and the GIS transformer stations with important loads such as traction station of electrical railroad, it is special
It is not double-bus GIS, these transformer stations are very high to power supply reliability requirement, it is difficult to carry out pressure examination in the case where whole station has a power failure
Test.To solve this problem, spy proposes GIS with frequency homophase ac voltage withstanding test method.
GIS (such as takes bus-bar potential transformer two using neighbouring device working voltage with frequency homophase ac voltage withstanding experimental technique
Secondary side voltage) as the reference voltage, test voltage is obtained by resonance manner, and using PHASE-LOCKED LOOP PLL TECHNIQUE to its frequency and phase place
Real time dynamic tracing is carried out, and the frequency and phase place of test voltage and working voltage is made in same frequency cophasal state.
Under same frequency cophasal state, the voltage born at operation part and the disconnecting switch fracture of tested interval junction
For working voltage and the difference of test voltage, as shown in figure 1, the voltage magnitude that bears of disconnecting switch incision position actually both sides voltage is exhausted
To the difference being worth, much smaller than the frequency breakdown voltage of disconnecting switch fracture, thus it is not result in that the disconnecting switch fracture punctures, also not
Impact can be produced on other GIS devices in charging operation state.Wherein, U1 represents test voltage；U2 represents working voltage；
△ U represent fracture voltage；Carry out under conditions of adjacent part is powered with the pressure test of frequency homophase, its security and reliability
Property is particularly important.In order to avoid there are in test various accidents so that frequency plot is asynchronous or isolation fracture punctures and
Adjacent operation part is had a negative impact and danger is caused to experimental facilities and the person, it is desirable to frequency homophase pressure test
Control protective unit is reliable enough.
Before widely used GIS pressure tests do not require that to test voltage frequency and phase place corresponding control is protected
Device is mainly by overvoltage protection and arc protection two ways to be protected, output of cutting off the electricity supply.Overvoltage protection is referred to
Collection test voltage, when test voltage is higher than setting value, protection act is cut off the electricity supply；Arc protection, i.e. o-volt protection, when by
When flashover causes voltage to reduce, protection act is cut off the electricity supply.
But above-mentioned GPF (General Protection False mode cannot meet the protection requirement of same frequency homophase pressure test, in above-mentioned protected mode
Under, if failing (i.e. test voltage and reference voltage frequency plot change, asynchronous) with frequency homophase in process of the test, seriously
In the case of test voltage and reference voltage may reversely cause isolation switch to puncture to cause charging operation partial fault.In this feelings
Under condition, protection will not action, it is impossible to which equipment is protected.
Therefore, how same frequency homophase pressure test is protected, it is to avoid operation equipment, testing equipment and personnel are in fracture
Suffer damage under the conditions of puncturing etc., be current problem demanding prompt solution.
The content of the invention
In view of this, one kind that the technical problem to be solved is to provide is protected with frequency homophase pressure test control
Method and system, solve the problems, such as that GPF (General Protection False mode cannot be protected to same frequency homophase pressure test.
An object of the present invention is to propose a kind of GIS with frequency homophase controlling test guard method；The purpose of the present invention it
Two is to propose a kind of GIS with frequency homophase controlling test protection system.
An object of the present invention is achieved through the following technical solutions：
A kind of GIS that the present invention is provided is comprised the following steps with frequency homophase controlling test guard method：
S100：Obtain reference voltage and test voltage；
S200：Calculate magnitude of voltage, difference on the frequency and the phase difference of reference voltage and test voltage；
S300：Obtain the rated voltage of equipment under test, default protection definite value；
S400：Reference voltage is compared with default protection definite value with the magnitude of voltage of test voltage, difference on the frequency and phase difference
Compared with the whether action of determination frequency phase protection, high pressure overvoltage protection and high pressure arc protection；If each parameter exceedes default protection
Definite value, then corresponding protection act, cuts off the electricity supply；If being not above default protection definite value, protection is failure to actuate；
S500：If being unsatisfactory for protection act condition, with frequency homophase experimental rig normal work.
Further, the frequency plot in step S400 protects concrete multilevel iudge to comprise the following steps：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot action；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot action；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act.
Further, the concrete multilevel iudge of the step S400 mesohigh overvoltage protection is further comprising the steps of：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage
Protection act；
S413：It is when disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, fixed more than default protection
During value, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage
Protection act.
Further, the concrete multilevel iudge of the step S400 mesohigh arc protection is further comprising the steps of：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When examination interval flashover is treated, this test voltage value is compared previous cycle test voltage value and is reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level is compared previous cycle reference voltage level and is reduced more than 10%
When or this reference voltage level less than default protection definite value when, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduces exceeding
When 10% or when this test voltage value is less than default protection definite value, high pressure arc protection action.
The second object of the present invention is achieved through the following technical solutions：
A kind of GIS that the present invention is provided with frequency homophase controlling test protection system, including：Protection monitoring module, high pressure are surveyed
Amount module, PLL control module and public control module；
The protection monitoring module, for gathering test voltage and reference voltage signal, compares both frequencies and phase place, and
Calculated, the whether action of determination frequency phase protection, high pressure overvoltage protection, high pressure arc protection finally will determine that signal is sent out
Deliver to public control module；
The high-tension measurement module, for gathering test voltage and reference voltage, is measured in real time, and measurement data is sent out
Deliver to public control module；
The PLL control module, for gathering test voltage and reference voltage, carries out same frequency homophase by phaselocked loop
Adjust, reach signal output after same frequency homophase to public control module.
The public control module, for receiving the judgement signal of protection monitoring module output, by power supply communication optical fiber
Send to same frequency homophase power supply, control power switch, play a protective role；For receiving the measurement number of high-tension measurement module output
According to, and data are presented on a display screen by display module；Same frequency for receiving PLL control module output is believed together
Number, and by sending to same frequency homophase power supply with frequency in-phase signal with phase control optical fiber with frequency；For receiving input module control
Signal processed, the control signal include voltage up-down signal and start and stop class signal, are controlled with frequency homophase by power supply communication optical fiber
Power supply realizes voltage up-down, start and stop；For receiving input module data-signal, the data-signal is default protection definite value class letter
Number, and protection control module is sent the data to for protecting calculating to judge.
The protection monitoring module includes frequency plot protection module, high pressure overvoltage protective module and high pressure arc protection mould
Block；
1) the frequency plot protection module detailed process is as follows：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot action；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot action；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act.
2) the high pressure overvoltage protective module detailed process includes：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage
Protection act；
S413：It is when disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, fixed more than default protection
During value, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage
Protection act.
3) the high pressure arc protection module detailed process includes：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When examination interval flashover is treated, this test voltage value is compared previous cycle test voltage value and is reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level is compared previous cycle reference voltage level and is reduced more than 10%
When or this reference voltage level less than default protection definite value when, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduces exceeding
When 10% or when this test voltage value is less than default protection definite value, high pressure arc protection action.
The beneficial effects of the present invention is：A kind of control for being applied to same frequency homophase ac voltage withstanding test that the present invention is provided
Guard method, integrates protection, control, measurement three zones.Based on the method that the present invention is provided is protected by frequency plot,
Each cycle measures reference voltage and test voltage in real time, and calculates the phase difference of test voltage and busbar voltage, works as phase place
When difference exceedes setting valve, protection act is cut off the electricity supply.Fracture overvoltage and the guard method of flashover are additionally provided simultaneously, each
Cycle measures reference voltage and test voltage in real time, the protection act when fracture voltage exceedes setting value；When fracture punctures, fracture
During voltage die, protection act.The method effectively avoids the various accidents occurred in same frequency homophase pressure test
So that frequency plot is asynchronous or isolation fracture punctures and adjacent operation part is had a negative impact and to experimental facilities and
The person causes danger.
Description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is disconnecting switch fracture voltage waveform diagram under same frequency cophasal state；
A kind of GIS that Fig. 2 is provided for the embodiment of the present application is with frequency homophase controlling test protection device and with the same phase study of frequency
The connection diagram of system；
A kind of GIS that Fig. 3 is provided for the embodiment of the present application is with frequency homophase controlling test protection device schematic appearance；
A kind of GIS that Fig. 4 is provided for the embodiment of the present application is with theory diagram inside frequency homophase controlling test protection device；
Fig. 5 protects control flow chart with frequency homophase controlling test protection device for a kind of GIS that the embodiment of the present application is provided；
Fig. 6 is that frequency plot protects control flow chart.
Specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the explanation present invention, rather than in order to limit the scope of the invention.
Embodiment 1
A kind of GIS that the present invention is provided is comprised the following steps with frequency homophase controlling test guard method：
S100：Obtain reference voltage and test voltage；
S200：Calculate magnitude of voltage, difference on the frequency and the phase difference of reference voltage and test voltage；
S300：Obtain the rated voltage of equipment under test, default protection definite value；
S400：Reference voltage is compared with default protection definite value with the magnitude of voltage of test voltage, difference on the frequency and phase difference
Compared with the whether action of determination frequency phase protection, high pressure overvoltage protection and high pressure arc protection；If each parameter exceedes default protection
Definite value, then corresponding protection act, cuts off the electricity supply；If being not above default protection definite value, protection is failure to actuate；
S500：If being unsatisfactory for protection act condition, with frequency homophase experimental rig normal work.
Further, the frequency plot in step S400 protects concrete multilevel iudge to comprise the following steps：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot action；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot action；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act.
Further, the concrete multilevel iudge of the step S400 mesohigh overvoltage protection is further comprising the steps of：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage
Protection act；
S413：It is when disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, fixed more than default protection
During value, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage
Protection act.
Further, the concrete multilevel iudge of the step S400 mesohigh arc protection is further comprising the steps of：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When examination interval flashover is treated, this test voltage value is compared previous cycle test voltage value and is reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level is compared previous cycle reference voltage level and is reduced more than 10%
When or this reference voltage level less than default protection definite value when, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduces exceeding
When 10% or when this test voltage value is less than default protection definite value, high pressure arc protection action.
A kind of GIS that the present invention is provided with frequency homophase controlling test protection system, including：Protection monitoring module, high pressure are surveyed
Amount module, PLL control module and public control module；
The protection monitoring module, for gathering test voltage and reference voltage signal, compares both frequencies and phase place, and
Calculated, the whether action of determination frequency phase protection, high pressure overvoltage protection, high pressure arc protection finally will determine that signal is sent out
Deliver to public control module；
The high-tension measurement module, for gathering test voltage and reference voltage, is measured in real time, and measurement data is sent out
Deliver to public control module；
The PLL control module, for gathering test voltage and reference voltage, carries out same frequency homophase by phaselocked loop
Adjust, reach signal output after same frequency homophase to public control module.
The public control module, for receiving the judgement signal of protection monitoring module output, by power supply communication optical fiber
Send to same frequency homophase power supply, control power switch, play a protective role；For receiving the measurement number of high-tension measurement module output
According to, and data are presented on a display screen by display module；Same frequency for receiving PLL control module output is believed together
Number, and by sending to same frequency homophase power supply with frequency in-phase signal with phase control optical fiber with frequency；For receiving input module control
Signal (voltage up-down, start and stop class) processed, realizes voltage up-down, start and stop with frequency homophase power supply by the control of power supply communication optical fiber；With
In receiving input module data-signal (default protection definite value class), and send the data to protection control module and be used to protect and calculate
Judge.
The protection monitoring module includes frequency plot protection module, high pressure overvoltage protective module and high pressure arc protection mould
Block；
1) the frequency plot protection module detailed process is as follows：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot action；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot action；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act.
2) the high pressure overvoltage protective module detailed process includes：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage
Protection act；
S413：It is when disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, fixed more than default protection
During value, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage
Protection act.
3) the high pressure arc protection module detailed process includes：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When examination interval flashover is treated, this test voltage value is compared previous cycle test voltage value and is reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level is compared previous cycle reference voltage level and is reduced more than 10%
When or this reference voltage level less than default protection definite value when, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduces exceeding
When 10% or when this test voltage value is less than default protection definite value, high pressure arc protection action.
Embodiment 2
Fig. 5 protects control flow chart with frequency homophase controlling test protection device for a kind of GIS that the embodiment of the present application is provided,
In Fig. 5, GIS includes with frequency homophase controlling test protection device protection control flow：
S100：Obtain reference voltage and test voltage；
S200：Calculate magnitude of voltage, difference on the frequency and the phase difference of reference voltage and test voltage；
S300：Obtain the rated voltage of equipment under test, default protection definite value；
S400：Reference voltage is compared with default protection definite value with the magnitude of voltage of test voltage, difference on the frequency and phase difference
Compared with the whether action of determination frequency phase protection, high pressure overvoltage protection and high pressure arc protection；If each parameter exceedes default protection
Definite value, then corresponding protection act, cuts off the electricity supply；If being not above default protection definite value, protection is failure to actuate；
S500：If being unsatisfactory for protection act condition, with frequency homophase experimental rig normal work.
In this flow chart, step S400 process is related to frequency plot protection, high pressure overvoltage protection and high pressure flashover guarantor
Shield, wherein frequency plot protection control flow such as Fig. 6, specifically includes：
S401：Judge reference voltage and test voltage phase difference.S402 is performed when phase difference is more than 60 °；Work as phase difference
S403 is performed more than 30 ° but when being less than 60 °；S404 is performed when phase difference is less than 30 °.
S402：Judge rated voltage Un and test voltage value U1, work as Un=110kV, 60kV≤U1≤100kV or Un=
When 220kV, 120kV≤U1≤180kV or Un=500kV, 148kV≤U1≤237kV, frequency plot protection act is walked
Rapid S405；In other cases, carry out step S404.
S403：Judge rated voltage Un and test voltage value U1, work as Un=110kV, U1 ＞ 100kV or Un=220kV, U1
When≤180kV or Un=500kV, U1≤237kV, frequency plot protection act carries out step S405；In other cases, enter
Row step S404.
S404：Protection is failure to actuate.
S405：Protection act.
Embodiment 3
A kind of GIS that Fig. 2 is provided for the embodiment of the present application is with frequency homophase controlling test protection device and with the same phase study of frequency
The connection diagram of system.
As shown in Fig. 2 including same frequency homophase experiment power supply 1, series resonant equipment 2 and divider with frequency homophase pilot system
3；In figure, top horizontal line represents bus, and that what is be connected with bus is transformer PT, and the reference voltage of transformer PT outputs is to control guarantor
Protection unit, is connected with control protective unit by same frequency homophase control line and power supply connection with frequency homophase experiment power supply, partial pressure
Device 23 is by test voltage signal input in control protective unit.
It is connected with a low pressure winding of PT with the reference voltage input terminal of frequency homophase control protective unit, for obtaining
Voltage in one low pressure winding of PT, and by the voltage for obtaining as the reference voltage；With the examination of frequency homophase control protective unit
The test lead that voltage input end is tested with divider 3 is connected, and voltage output end is connected with the input of series resonant equipment 2
Connect.Pass through the same frequency homophase of optical fiber and same frequency homophase power supply 1 with the same frequency in-phase signal output end of frequency homophase control protective unit
Signal input part is connected, and exports and the synchronous signal of reference voltage same frequency；Lead to the power supply of frequency homophase control protective unit
News output end communicates input with the power supply of same frequency homophase power supply 1 by optical fiber and is connected, and exports various control protection signals.Together
The signal output part of frequency homophase control protective unit is connected with oscillographic signal input part, can be tried by oscillograph real-time monitored
The waveform of electrical verification pressure and reference voltage.
A kind of GIS that Fig. 3 is provided for the embodiment of the present application is with frequency homophase controlling test protection device schematic appearance.
In Fig. 3,1.-test voltage signaling interface；2.-fuse；3.-reference voltage signal interface；4.-oscillograph
Signaling interface CH1, for test voltage waveform is shown on oscillograph；5.-oscilloscope signal interface CH2, in oscillograph
Upper display bus run voltage waveform；6.-and with frequency homophase control interface, export with frequency in-phase voltage signal；7.-optical-fibre communications
Interface, out-put supply control signal；8.-start button；9.-jerk button；10.-voltage rises button；- voltage drop is pressed
Key；- thickness is adjusted；- timing starts；- power switch；- supply socket；The supply socket of-oscillograph；In
Between big box indicating touch display screen.Testing equipment rated voltage, fracture voltage protection value, examination can be arranged by touch display screen
Test the parameters such as voltage protection value.Display screen can show that test voltage, working voltage, fracture voltage, frequency, phase place are equivalent.
A kind of GIS that Fig. 4 is provided for the embodiment of the present application is with theory diagram inside frequency homophase controlling test protection device.
In Fig. 4, GIS is with frequency homophase controlling test protection device by three functional modules：Protection monitoring module, high-tension measurement
Module, PLL control module and a public control module composition.Protection monitoring module collection test voltage and reference voltage
Phase place, compares both frequencies and phase place, and carries out calculating judgement, finally will determine that signal is sent to public control module；High pressure
Measurement module gathers test voltage and reference voltage, is measured in real time, measurement data is sent to public control module；Lock phase
Ring control module gathers test voltage and reference voltage, carries out same frequency homophase by phaselocked loop and adjusts, will after reaching same frequency homophase
Signal output is to public control module.
Public control module is the control core of package unit.Public control module receives sentencing for protection monitoring module output
Break signal, is sent to same frequency homophase power supply by power supply communication optical fiber, controls power switch, play a protective role；Public control
Module receives the measurement data of high-tension measurement module output, and data are presented on a display screen by display module；Public control
Molding block receives the same frequency in-phase signal that PLL control module is exported, and by believing with frequency is same with phase control optical fiber with frequency
Number send to same frequency homophase power supply.Public control module receives input module control signal (voltage up-down, start and stop class), by electricity
Source communication optical fiber control realizes voltage up-down, start and stop with frequency homophase power supply；Public control module receives input module data-signal
(protection definite value class), and protection control module is sent the data to for protecting calculating to judge.
Finally illustrate, above example is only unrestricted to illustrate technical scheme, although by ginseng
According to the preferred embodiments of the present invention, invention has been described, it should be appreciated by those of ordinary skill in the art that can
To make various changes in the form and details to which, without departing from the spirit and scope limited by the present invention.
Claims (5)
1. a kind of GIS is with frequency homophase ac voltage withstanding controlling test guard method, it is characterised in that：Comprise the following steps：
S100：Obtain reference voltage and test voltage；
S200：Calculate the magnitude of voltage and phase difference of reference voltage and test voltage；
S300：Obtain the rated voltage of pilot system, default protection definite value；
S400：Reference voltage is compared with default protection definite value with the magnitude of voltage of test voltage and phase difference, determination frequency
The whether action of phase protection, high pressure overvoltage protection and high pressure arc protection；If each parameter exceedes default protection definite value, accordingly
Protection act, cuts off the electricity supply；If being not above default protection definite value, protection is failure to actuate；
S500：If being unsatisfactory for protection act condition, with frequency homophase experimental rig normal work；
Frequency plot in step S400 protects concrete multilevel iudge process as follows：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot protection act；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot protection act；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act.
2. GIS according to claim 1 is with frequency homophase ac voltage withstanding controlling test guard method, it is characterised in that：It is described
The concrete multilevel iudge process of step S400 mesohigh overvoltage protection is as follows：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage protection
Action；
S413：When disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, more than default protection definite value
When, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage protection
Action.
3. GIS according to claim 1 is with frequency homophase ac voltage withstanding controlling test guard method, it is characterised in that：It is described
The concrete multilevel iudge process of step S400 mesohigh arc protection is as follows：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When treating examination interval flashover, this test voltage value compare when previous cycle test voltage value is reduced more than 10% or
When this test voltage value is less than default protection definite value, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level compare when previous cycle reference voltage level is reduced more than 10% or
When this reference voltage level is less than default protection definite value, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action.
4. a kind of GIS is with frequency homophase ac voltage withstanding controlling test protection system, it is characterised in that：Including protection monitoring module, height
Pressure measurement module, PLL control module and public control module；
The protection monitoring module, for gathering test voltage and reference voltage signal, compares both phase places, and is calculated,
The whether action of determination frequency phase protection, high pressure overvoltage protection, high pressure arc protection, finally will determine that signal is sent to public control
Molding block；
The high-tension measurement module, for gathering test voltage and reference voltage, is measured in real time, by measurement data send to
Public control module；
The PLL control module, for gathering test voltage and reference voltage, carries out same frequency homophase by phaselocked loop and adjusts,
Reach signal output after same frequency homophase to public control module；
The public control module, for receiving the judgement signal of protection monitoring module output, is sent by power supply communication optical fiber
To same frequency homophase power supply, power switch is controlled；For receiving the measurement data of high-tension measurement module output, and by data by aobvious
Show that module is presented on a display screen；For receiving the same frequency in-phase signal of PLL control module output, and by same frequency homophase
Control optical fiber will be sent to same frequency homophase power supply with frequency in-phase signal；For receiving input module control signal；The control letter
Number include voltage up-down start and stop class signal, by power supply communication optical fiber control realize voltage up-down, start and stop with frequency homophase power supply；With
In input module data-signal is received, the data-signal is default protection definite value class signal, and sends the data to protection control
Molding block is used to protect calculating to judge.
5. GIS according to claim 4 is with frequency homophase controlling test protection system, it is characterised in that：The protection monitoring
Module includes frequency plot protection module, high pressure overvoltage protective module and high pressure arc protection module；
1) the frequency plot protection module detailed process is as follows：
A) when pilot system rated voltage is 110kV：
S401：As test voltage≤60kV, frequency plot protection is failure to actuate；
S402：As test voltage≤100kV and when phase difference is more than 60 °, then frequency plot protection act；
S403：As test voltage ＞ 100kV and when phase difference is more than 30 °, then frequency plot protection act；
B) when pilot system rated voltage is 220kV：
S404：As test voltage≤120kV, frequency plot protection is failure to actuate；
S405：As test voltage≤180kV and when phase difference is more than 60 °, then frequency plot protection act；
S406：As test voltage ＞ 180kV and when phase difference is more than 30 °, then frequency plot protection act；
C) when pilot system rated voltage is 500kV：
S407：As test voltage≤148kV, frequency plot protection is failure to actuate；
S408：As test voltage≤237kV and when phase difference is more than 60 °, then frequency plot protection act；
S409：As test voltage ＞ 237kV and when phase difference is more than 30 °, then frequency plot protection act；
2) the high pressure overvoltage protective module detailed process includes：
S410：Obtain and calculate the real-time test voltage value of each cycle and reference voltage level；
S411：When test voltage exceedes default protection definite value, high pressure overvoltage protection action；
S412：When this cycle reference voltage level compares previous cycle reference voltage level increment more than 10%, high pressure overvoltage protection
Action；
S413：When disconnecting switch fracture voltage value, i.e. test voltage and the phasor difference of reference voltage, more than default protection definite value
When, high pressure overvoltage protection action；
S414：When this cycle test voltage value compares previous cycle test voltage value increases above 10%, high pressure overvoltage protection
Action；
3) the high pressure arc protection module detailed process includes：
S415：Obtain and calculate the real-time test voltage of each cycle and reference voltage level；
S416：When treating examination interval flashover, this test voltage value compare when previous cycle test voltage value is reduced more than 10% or
When this test voltage value is less than default protection definite value, high pressure arc protection action；
S417：When adjacent busbar flashover, this reference voltage level compare when previous cycle reference voltage level is reduced more than 10% or
When this reference voltage level is less than default protection definite value, high pressure arc protection action；
S418：Work as flashover, this isolation fracture magnitude of voltage is compared previous cycle isolation fracture magnitude of voltage and reduced more than 10%
When or this test voltage value less than default protection definite value when, high pressure arc protection action.
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| CN105388440B (en) * | 2015-11-09 | 2018-11-27 | 国网重庆市电力公司电力科学研究院 | GIS is with frequency with phase alternating-current voltage resistance test device reliability verification method |
| CN105974280A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test device |
| CN105974282A (en) * | 2016-05-09 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | GIS voltage holding test method |
| CN111596246B (en) * | 2019-02-20 | 2023-06-06 | 国网冀北电力有限公司 | Same-frequency and same-phase verification device and verification method thereof |
| CN109932623B (en) * | 2019-03-25 | 2021-06-08 | 重庆大学 | GIS same-frequency and same-phase test method based on phase matching combination and phase-shifting transformer |
| CN110133494A (en) * | 2019-06-05 | 2019-08-16 | 国网江苏省电力有限公司苏州供电分公司 | Industrial frequency AC Withstand test device |
| CN110703059B (en) * | 2019-11-13 | 2021-08-17 | 上海恒能泰企业管理有限公司璞能电力科技工程分公司 | Device for improving tuning stability of series resonance test under small load |
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| CN101477183A (en) * | 2009-01-20 | 2009-07-08 | 湖南省电力公司超高压管理局 | Intelligent non-partial discharge extra-high voltage sine-wave modulation pressure-resistant apparatus |
| CN102565647A (en) * | 2012-02-14 | 2012-07-11 | 重庆市电力公司电力科学研究院 | GIS (Global Information System) withstand voltage testing system |
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| CN101477183A (en) * | 2009-01-20 | 2009-07-08 | 湖南省电力公司超高压管理局 | Intelligent non-partial discharge extra-high voltage sine-wave modulation pressure-resistant apparatus |
| CN102565647A (en) * | 2012-02-14 | 2012-07-11 | 重庆市电力公司电力科学研究院 | GIS (Global Information System) withstand voltage testing system |
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