CN105870916A - Processing method and device for multi-stage resonance of high-voltage main transformer - Google Patents
Processing method and device for multi-stage resonance of high-voltage main transformer Download PDFInfo
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- CN105870916A CN105870916A CN201610221605.2A CN201610221605A CN105870916A CN 105870916 A CN105870916 A CN 105870916A CN 201610221605 A CN201610221605 A CN 201610221605A CN 105870916 A CN105870916 A CN 105870916A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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Abstract
The invention discloses a processing method and device for a multi-stage resonance of high-voltage main transformer. The processing method comprises the following steps of intelligently judging whether the main transformer encounters a resonant situation or not according to current information quantity of the high-voltage main transformer; comparing a resonant level value with a preset value; and sending a resonance processing instruction of the high-voltage main transformer according to a comparison result, so that the purpose of resonance damage is achieved, and a resonant point is prevented from being damaged by manually operating a series compensation device. Whether resonance is generated or not and the resonant level are intelligently judged, the resonance of the main transformer is processed by a mode of sending the instruction, the problems of manual operation, hysteresis and the like do not exist, and thus, the potential risk of a device such as the main transformer is rapidly eliminated.
Description
Technical field
The application relates to high voltage supply technical field, particularly to the process of a kind of high pressure main transformer multistage resonant
Method and apparatus.
Background technology
Current energy supply and demand regional imbalance phenomenon is serious, and " transferring electricity from the west to the east " and " NORTEL south is sent " etc. are remote
Distance power transmission engineering occurs therewith.In long distance transmission line, series compensation device is generally used to support
Disappear the impact of line inductance, thus stablizes transmission capacity.Owing to network system exists load and the string of perception
The capacitor of capacitive in connection compensation device, by distance, environment, the intricate factor of operating condition
When affecting, high-pressure system will occur resonance phenomena, can cause damage to equipment such as main transformers.
The measure of reply main transformer resonance at present is mainly according to resonance degree by manually exiting one or more string
Connection compensation device destroys resonance point.
For said method, manual operation is delayed seriously, so cannot quickly eliminate the peace of the equipment such as main transformer
Full hidden danger, has a strong impact on so that network system is produced by resonance.
Summary of the invention
In view of this, the invention provides the processing method of a kind of high pressure main transformer multistage resonant, fast to realize
Speed effectively destroys resonance point, thus reaches to eliminate the purpose of the potential safety hazard of the equipment such as main transformer.
To this end, the technical scheme that the present invention solves this technical problem is: provide a kind of high pressure main transformer multistage
The processing method of resonance, including:
Obtain high pressure main transformer quantity of information；
According to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance, and the grade of resonance occurs；
Relatively differentiate the resonance grade point obtained and preset value, it is thus achieved that comparative result；
Send order according to described comparative result main transformer multistage resonant is processed.
Preferably, described according to high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance, and occurs humorous
The grade shaken, including:
Described main transformer quantity of information is carried out Hilbert-Huang transform, it is thus achieved that spectrum information；
Judge whether resonance according to described spectrum information；
If generation resonance, calculate 1/2 time of spectrum information of main transformer quantity of information, 1/3 time, first-harmonic and 63
The root-mean-square virtual value of secondary interior harmonic wave；
The ratio of described root-mean-square virtual value with first-harmonic value is compared with threshold value；
When described root-mean-square virtual value and first-harmonic value ratio are less than threshold value, equal to each harmonic the most again
Root virtual value calculates；
When the ratio of described root-mean-square virtual value with first-harmonic value is more than or equal to threshold value, obtain resonance grade point.
Preferably, main transformer multistage resonant is processed by described order according to comparative result transmission, including:
Described comparative result is that resonance grade point more than early warning preset value and is less than action preset value, to monitoring
Backstage sends early warning signal.
Preferably, main transformer multistage resonant is processed by described order according to comparative result transmission, including:
Described comparative result is that described resonance grade point exceedes action preset value, mends Control protection system to string
Send string and mend bypass instruction, send early warning signal to monitoring backstage simultaneously.
Preferably, after main transformer multistage resonant being processed according to the transmission order of described comparative result, also
Including:
Obtain current high pressure main transformer quantity of information；
According to the described high pressure main transformer quantity of information acquired, it is judged that whether main transformer occurs resonance, and occurs
The grade of resonance；
If within the T1 time, differentiate that the resonance grade point obtained is both greater than described action preset value each time,
Mend Control protection system transmission to described string and act on the bypass instruction of another series compensation device.
Preferably, after string mends Control protection system transmission string benefit bypass instruction, also include:
Receive string and mend the by-pass switch closure signal of Control protection system feedback；
Obtain current high pressure main transformer quantity of information；
According to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance；
If resonance free occurs, mend Control protection system to described string and send the by-pass switch of series compensation device
ON-and OFF-command.
Preferably, mend Control protection system to described string and send the by-pass switch Guan Bi life of series compensation device
After order, farther include:
Receive string and mend the by-pass switch cut-off signal of Control protection system feedback；
If within the T2 time, continuous several times receives by-pass switch closed and disconnected signal, mends to string and controls
Protection system sends permanent bypass instruction and described by-pass switch is forever disconnected action.
Corresponding said method, present invention also offers the processing means of a kind of high pressure main transformer multistage resonant,
Including:
First acquiring unit, is used for obtaining high pressure main transformer quantity of information；
First judgement unit, for according to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance,
And there is the grade of resonance；
First comparing unit, for differentiating that the resonance grade point obtained compares with preset value；
Transmitting element, carries out main transformer multistage resonant processing instruction for sending according to comparative result.
Preferably, described first judgement unit includes:
Converter unit, for carrying out Hilbert-Huang transform to described main transformer quantity of information, it is thus achieved that spectrum information；
For the spectrum information obtained according to described converter unit, resonance generation judgement unit, judges that main transformer is
No generation resonance；
Computing unit, calculates in 1/2 time of spectrum information, 1/3 time, first-harmonic and 63 times of main transformer quantity of information
The root-mean-square virtual value of harmonic wave；
Threshold value comparing unit, for comparing described root-mean-square virtual value with threshold value with first-harmonic value ratio；
Resonance grade point acquiring unit, for when described root-mean-square virtual value and first-harmonic value ratio are more than threshold value
Time, obtain resonance grade point.
Preferably, described transmitting element includes:
First sends subelement, for described comparative result be resonance grade point more than early warning preset value and
During less than action preset value, send early warning signal to monitoring backstage.
Preferably, described transmitting element includes:
Second sends subelement, for when described comparative result is resonance grade point more than action preset value,
Mend Control protection system to string and send series compensation device bypass instruction.
Preferably, also include:
Second acquisition unit, mends Control protection system transmission string for sending subelement described second to string
After mending device bypass instruction, obtain current high pressure main transformer quantity of information；
Second judgement unit, for the high pressure main transformer quantity of information acquired according to described second acquisition unit,
Judge whether main transformer occurs resonance, and the grade of resonance occurs；
Second comparing unit, for differentiating the resonance grade point obtained to described second judgement unit and preset
Value compares；
Very first time judging unit, is used for whether the time that judges reaches T1；
3rd sends subelement, judges that the time reaches T1 for described very first time judging unit, and at T1
In time, described second comparing unit all differentiates that the resonance grade point obtained is both greater than described action preset value,
Mend Control protection system transmission to described string and act on the bypass instruction of another series compensation device.
Preferably, also include:
First feedback reception unit, sends out to string benefit Control protection system for sending subelement described second
After sending series compensation device bypass instruction, receive string and mend the by-pass switch closure signal of Control protection system feedback；
3rd acquiring unit, anti-for receiving string benefit Control protection system at described first feedback reception unit
After the by-pass switch closure signal of feedback, obtain current high pressure main transformer quantity of information；
3rd judgement unit, for the high pressure main transformer quantity of information acquired according to described 3rd acquiring unit,
Judge whether main transformer occurs resonance, and the grade of resonance occurs；
4th sends subelement, when described 3rd judgement unit differentiates that resonance free occurs, to described string
Mend Control protection system and send the by-pass switch open command acting on series compensation device.
Preferably, also include:
Second feedback reception unit, sends subelement for the 4th and mends Control protection system transmission to described string
The bypass receiving string benefit Control protection system feedback after acting on the by-pass switch open command of series compensation device is opened
Close cut-off signal；
Second time judging unit, is used for whether the time that judges reaches T2；
5th sends subelement, judges that the time reaches T2 for described second time judging unit, and at T2
In time, described first feedback unit, the second feedback unit are sequentially received by-pass switch and have closed and
During cut-off signal, mend Control protection system to described string and send the instruction of series compensation device permanent bypass.
Relative to prior art, the invention has the beneficial effects as follows: according to current high pressure main transformer quantity of information, intelligence
Judge whether main transformer occurs resonance, and the grade of generation resonance, resonance grade point is compared with preset value
Relatively, send high pressure main transformer resonance according to comparative result and process instruction, thus reach to destroy the purpose of resonance.
Thus avoid and manually destroy resonance point according to resonance degree operating series compensation device, owing to being intelligence
Can differentiate whether resonance occurs and resonance grade, by the way of transmission instructs, process resonance, the most artificial
The problem of Operation delay, thus quickly eliminate the potential safety hazard of the equipment such as main transformer.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is the flow chart that the present invention realizes processing the method for high pressure main transformer multistage resonant；
Fig. 2 is the method flow diagram whether resonance disclosed by the invention occurs with grade discrimination；
Fig. 3 is the another kind of embodiment of the processing method realizing high pressure main transformer multistage resonant disclosed by the invention
Flow chart；
Fig. 4 is the another kind of embodiment of the processing method realizing high pressure main transformer multistage resonant disclosed by the invention
Flow chart；
Fig. 5 is the another kind of embodiment stream of the processing method realizing high pressure main transformer multistage resonant of disclosure of the invention
Cheng Tu；
Fig. 6 is the structure chart of the processing means realizing high pressure main transformer multistage resonant of disclosure of the invention；
Fig. 7 is whether the resonance of disclosure of the invention occurs and resonance grade discrimination structure drawing of device；
Fig. 8 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart；
Fig. 9 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart；
Figure 10 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Fig. 1 is the flow chart that realization disclosed in the present application processes the method for high pressure main transformer multistage resonant, sees figure
1, the disclosed method processing high pressure main transformer multistage resonant of a kind of embodiment of the application, including:
Step S101, acquisition high pressure main transformer quantity of information；
Wherein, described high pressure main transformer quantity of information includes the voltage of main transformer of Real-time Collection, electric current, frequently
The information such as rate；
Step S102, according to described high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and occurs
The grade of resonance；
Step S103, compare and differentiate the resonance grade point that obtains and preset value, it is thus achieved that comparative result；
Wherein, described preset value sets in advance according to setting parameter, it can be determined that resonance grade point
The value of the order of severity, wherein, preset value includes early warning preset value and action preset value, but is not limited to this
Two preset values that embodiment is listed.And setting parameter obtains according to field experience；
Step S104, according to described comparative result send order main transformer multistage resonant is processed.
In the present embodiment, compared with described preset value by the resonance grade point that differentiation is obtained, root
Corresponding process instruction is sent according to different comparative results.So when multistage resonant occurs, it is possible to intelligence
Differentiate resonance grade, and transmission order in time processes, thus solve by manually exiting one or many
The problem that individual series compensation device destroys resonance point Operation delay.Use high pressure master disclosed in the present embodiment
The processing method becoming multistage resonant can quickly eliminate the potential safety hazard of the equipment such as main transformer.
Optionally, in another embodiment of the present invention, Fig. 2 be resonance disclosed by the invention whether occur and etc.
The flow chart of level method of discrimination, with reference to Fig. 2, whether described resonance occurs and Grade Judgment, including:
Step S201, to obtain high pressure main transformer quantity of information in voltage signal carry out Hilbert-Huang transform,
Obtain the spectrum information of voltage sampling signal；
Wherein, described voltage signal is carried out Hilbert-Huang transform, including:
Voltage sampling signal in main transformer quantity of information is carried out empirical mode decomposition, obtains some natural mode of vibration
Function；
Each intrinsic mode function is carried out Hilbert transform, obtains corresponding hilbert spectrum；
The hilbert spectrum collecting all intrinsic mode functions obtains the spectrum information of voltage sampling signal.
Step S202, spectrum information according to described voltage sampling signal judge whether resonance, if sending out
Raw resonance, then perform step S203, if there is not resonance, then performs step S201；
Wherein, when in the spectrum information of described voltage sampling signal in addition to the spectrogram of natural frequency, there is also
The spectrogram of other frequencies, then differentiate that main transformer there occurs resonance, otherwise, it is determined that resonance free occurs.
Step S203: according to the spectrum information of described voltage sampling signal, calculates 1/2 time, 1/3 time, base
The root-mean-square virtual value of harmonic wave in ripple and 63 times；
Step S204: the ratio of the root-mean-square virtual value of described each harmonic with first-harmonic value is carried out with threshold value
Relatively, if less than threshold value, then perform step S203, otherwise enter step S205；
Wherein, the most described threshold value takes 1.1, and the value of threshold value is to obtain according to experiment experience,
Can effectively extract the root-mean-square virtual value of resonance grade discrimination each harmonic more accurately, if institute
State the root-mean-square virtual value of each harmonic with the ratio of first-harmonic value less than 1.1, then enter step S203 and again carry
Take the root-mean-square virtual value of each harmonic, if the root-mean-square virtual value of described each harmonic and first-harmonic value
Ratio is more than or equal to 1.1, then it is assumed that the root-mean-square virtual value of described each harmonic reaches with the ratio of first-harmonic value
The precision of resonance grade discrimination, enters step S205, carries out the differentiation of resonance grade size.
Step S205: obtain resonance grade point.
Wherein, using the ratio of described root-mean-square virtual value and first-harmonic value as resonance grade point, when institute's resonance
Grade point is the biggest, shows that resonance the highest grade, otherwise, resonance the lowest grade.Resonance grade point is made
Output result for last resonance grade discrimination.
Visible, in the present embodiment, by the voltage signal in the high pressure main transformer quantity of information of acquisition is carried out
Empirical mode decomposition obtains some intrinsic mode functions, and each intrinsic mode function is carried out Martin Hilb
Special conversion, obtains corresponding hilbert spectrum, the Martin Hilb of all intrinsic mode functions that finally will obtain
Special spectrum collects, and obtains the spectrum information of voltage sampling signal.According to collecting the spectrum information obtained,
When differentiating other frequency informations obtained except natural frequency, then it is assumed that main transformer there occurs resonance.
When differentiation obtains resonance, then calculate the root-mean-square virtual value of each harmonic, and by described mean square
Root virtual value and first-harmonic are worth ratio to compare with threshold value, thus obtain effective root-mean-square virtual value with
First-harmonic is worth ratio, thus is worth ratio in judgement resonance grade according to effective root-mean-square virtual value and first-harmonic
Size, the method for described resonance grade discrimination in this enforcement, it is possible to get rid of in high pressure main transformer resonance grade
Differentiation during the interference that produces, and carry out resonance grade discrimination eliminating by threshold value set in advance
The interference of anthropic factor, thus improve the precision of resonance grade discrimination.
Alternatively, in another embodiment of the present invention, described many to main transformer according to comparative result transmission order
Level resonance processes, including:
When described comparative result is that resonance grade point more than early warning preset value and is less than action preset value, to prison
Control backstage sends early warning signal.
Wherein, described early warning signal can be divided into different grades of early warning, the most slightly, seriously, persistently
Serious etc..
Described monitoring backstage can be shown by display after receiving early warning signal or the form of audio alert is come
Notify the current resonance conditions of staff.
In this example, described resonance grade point is more than early warning preset value and less than action preset value, Ke Yili
Xie Wei, only sends early warning signal to monitoring backstage under slight resonance conditions, is used for reminding professional to adopt
Take corresponding measure.Additionally when resonance grade point is less than early warning preset value, it can be assumed that main transformer resonance degree
Smaller, it is not enough to main transformer equipment is damaged, does not operates.
Alternatively, in another embodiment of the present invention, described many to main transformer according to comparative result transmission order
Level resonance processes, including:
Described comparative result is that described resonance grade point exceedes action preset value, mends Control protection system to string
Send string and mend bypass instruction, send early warning signal to monitoring backstage simultaneously.
In the present embodiment, it determines the resonance grade point obtained more than action preset value it can be understood as resonance
Grade reaches the order of severity, then mend Control protection system to string and send string benefit bypass instruction, by a circuit
The by-pass switch of series compensation device close, make series compensation device short circuit, simultaneously after monitoring
Send early warning signal to report to the police.
Fig. 3 is another embodiment stream that realization disclosed in the present application processes the method for high pressure main transformer multistage resonant
Cheng Tu, sees Fig. 3, the processing method of high pressure main transformer multistage resonant disclosed in the another kind of embodiment of the application,
Including:
Step S301, acquisition high pressure main transformer quantity of information；
Step S302, according to described high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and occurs
The grade of resonance, if judging main transformer generation resonance, then performs step S303；
Step S303, compare and differentiate the resonance grade point that obtains and preset value, it is thus achieved that comparative result；
Step S304, according to described resonance grade point more than action preset value comparison knot result, to string mend
Control protection system sends string and mends bypass instruction, sends early warning signal to monitoring backstage simultaneously；
Step S305, obtain current high pressure main transformer quantity of information；
Step S306, according to current high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and sends out
The grade of raw resonance；If judging main transformer generation resonance, then perform step S307；
Step S307, compare and differentiate the resonance grade point that obtains and preset value, it is thus achieved that comparative result；
Step S308, judge described result be whether resonance grade point more than action preset value, the most then
Perform step S309；
Step S309, differentiate described resonance grade point persistent period of comparative result more than action preset value
Whether more than time T1, the most then perform step S310, if it is not, then perform step S305；
Wherein, described time T1 refers to start timing from starting to obtain current high pressure main transformer quantity of information, is
The time set according to field experience；
Step S310, mend Control protection system to string and send and act on the bypass instruction of another series compensation device.
By differentiating main transformer generation resonance in this example, and continue in time interval T1, differentiate the ratio obtained
Relatively result is all that resonance grade point is both greater than described action preset value, and the backward described string of the shortest time delay is mended and controlled
Protection system sends and acts on the bypass instruction of another series compensation device, by another circuit series compensation device from
High-pressure system is excised, so accelerates resonance point and destroy, reduce the impact on equipment of the main transformer resonance.
When the present embodiment is it is to be understood that the resonance order of severity is higher, bypass a series compensation device not
Main transformer resonance can be eliminated, in the case of resonance sustainable existence, come by two series compensation devices of bypass
Accelerate the destruction of main transformer resonance point.The technical scheme of the application is not limited to only fill two lines road series compensation
Put and excise.
Fig. 4 is another embodiment stream that realization disclosed in the present application processes the method for high pressure main transformer multistage resonant
Cheng Tu, sees Fig. 4, the processing method realizing high pressure main transformer multistage resonant disclosed in the present application, including:
Step S401, acquisition high pressure main transformer quantity of information；
Step S402, according to described high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and occurs
The grade of resonance；If judging main transformer generation resonance, then perform step S403；
Step S303, compare and differentiate the resonance grade point that obtains and preset value, it is thus achieved that comparative result；
Step S304, according to described resonance grade point more than action preset value comparison knot result, to string mend
Control protection system sends string and mends bypass instruction, sends early warning signal to monitoring backstage simultaneously；
Step S305, obtain current high pressure main transformer quantity of information；
Step S306, according to current high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and sends out
The grade of raw resonance, if judging, resonance free occurs, then perform step S307；
Step S307, to string mend Control protection system send series compensation device by-pass switch open command.
In the present embodiment when differentiation obtains resonance grade point more than action preset value, mend to string and control protection
System sends series compensation device bypass instruction, is closed by by-pass switch, thus send high-tension line by series compensation device
Middle excision, when again differentiating that obtaining resonance free occurs, then mend Control protection system to string and send series compensation device
By-pass switch open command, so that the described series compensation device bypassed accesses high-tension line again.
The present embodiment is it is to be understood that just can to eliminate main transformer at one series compensation device of satisfied bypass humorous
When shaking, series compensation device to be put into network system again, so that series compensation device is in distance
Transmission line of electricity is offset the impact of line inductance, thus stablizes transmission capacity.
Fig. 5 is another embodiment flow chart disclosed in the present application, sees Fig. 5, and realization disclosed in the present application is high
In the processing method of pressure main transformer multistage resonant, including:
Step S501, acquisition high pressure main transformer quantity of information；
Step S502, according to described high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and occurs
The grade of resonance, if judging main transformer generation resonance, then performs step S503；
Step S503, compare and differentiate the resonance grade point that obtains and preset value, it is thus achieved that comparative result；
Step S504, according to described resonance grade point more than action preset value comparison knot result, to string mend
Control protection system sends string and mends bypass instruction, sends early warning signal to monitoring backstage simultaneously；
Step S505, reception string mend the by-pass switch closure signal of Control protection system feedback；
Step S506, obtain current high pressure main transformer quantity of information；
Step S607, according to current high pressure main transformer quantity of information, it is judged that whether main transformer there is resonance, and sends out
The grade of raw resonance, if judging, resonance free occurs, then perform step S508；
Step S508, benefit by-pass switch open command of going here and there to string benefit Control protection system transmission；
Step S509, reception string mend the by-pass switch cut-off signal of Control protection system feedback；
Step S510, judge to receive successively by-pass switch closed and cut-off signal persistent period whether
More than time T2, the most then perform step 511, if it is not, then perform step 501；
Wherein said T2 refers to start timing from starting to obtain current high pressure main transformer quantity of information, is according to existing
The time that field experience sets；
Step S511, to string mend Control protection system send series compensation device permanent bypass instruction.
By to the by-pass switch received cut-off signal and by-pass switch closure signal in the present embodiment
Be monitored, when meet set the T2 time in, the by-pass switch of series compensation device close continuously with
Disconnect, and the string benefit Control protection system feedback signal being currently received be by-pass switch cut-off signal,
Rear to string mend Control protection system send permanent bypass instruction described by-pass switch is forever disconnected dynamic
Make.Owing to series compensation device repeatedly causes bypass because of resonance, show that series compensation device itself exists and draw
The problem playing main transformer generation resonance, so series compensation device to carry out permanent bypass, no longer carries out weight
Throw series compensation device.
Described embodiment farther includes, and mends Control protection system to string and sends series compensation device by-pass switch
After close command, do not receive string and mend the by-pass switch closure signal of Control protection system feedback, work as root
According to current high pressure main transformer quantity of information, it is judged that main transformer there occurs resonance, and resonance grade point is more than action
During preset value, continuing when string mends Control protection system transmission by-pass switch close command, string is mended and is controlled to protect
The protecting system short delayed startup of startup is malfunctioning and far jumps function, this side of tripping switch and offside switch, thus anti-
Only continuing resonance causes main transformer mechanical damage to explode.
Based on said method, Fig. 6 is the knot of the processing means realizing high pressure main transformer multistage resonant of disclosure of the invention
Composition, sees Fig. 6, and the present invention realizes the device that high pressure main transformer multistage resonant processes, including:
First acquiring unit the 101, first judgement unit the 102, first comparing unit 103 and transmitting element 104.
Wherein, the first acquiring unit 101 obtains high pressure main transformer quantity of information, and described main transformer quantity of information includes main transformer
The information such as the voltage of depressor, electric current.First judgement unit 102 obtains according to described first acquiring unit 101
High pressure main transformer letter information amount differentiate whether main transformer occurs the grade that resonance and resonance occur.When described first
Judgement unit 102 differentiates and obtains occurring resonance, and obtains the grade of main transformer resonance, and described first is the most single
Described first judgement unit 102 is differentiated that the resonance grade point obtained compares with preset value by unit 103, obtains
Obtain comparative result.Described transmitting element 104 sends to main transformer multistage resonant according to described comparative result
Reason instruction.
It should be noted that in the processing means of high pressure main transformer multistage resonant disclosed in the present embodiment, each
The specific works process of unit refers to the embodiment of the method for corresponding diagram 1, and here is omitted.
Preferably, in another embodiment, Fig. 7 is whether the resonance of disclosure of the invention occurs to sentence with resonance grade
Other structure drawing of device, sees Fig. 7,
Described first judgement unit 102 includes: converter unit 1021, resonance generation judgement unit 1022, meter
Calculate unit 1023, threshold value comparing unit 1024, resonance grade point acquiring unit 1025.
Wherein, the high pressure main transformer quantity of information that described first acquiring unit 101 is obtained by described converter unit 1021
Carry out Hilbert-Huang transform, it is thus achieved that spectrum information.Described resonance generation judgement unit 1022 is according to described
The spectrum information that converter unit 1021 obtains judges whether main transformer occurs resonance.When described resonance differentiates
Unit 1022 differentiates that obtaining resonance occurs, and described computing unit 1023 starts to calculate the 1/2 of described spectrum information
Secondary, 1/3 time, the root-mean-square virtual value of harmonic wave in first-harmonic and 63 times, described threshold value comparing unit 1024 will
Described root-mean-square virtual value compares with threshold value with first-harmonic value ratio, when described root-mean-square virtual value and base
When wave number ratio is less than threshold value, the root-mean-square that the most described computing unit 1023 extracts each harmonic again is effective
Value, until the ratio of the root-mean-square virtual value extracted and first-harmonic value is more than or equal to threshold value.When described root-mean-square
When virtual value is more than threshold value with first-harmonic value ratio, described resonance grade point acquiring unit 1025 obtains resonance etc.
Level value.
It should be noted that in the processing means of high pressure main transformer multistage resonant disclosed in the present embodiment, each
The specific works process of unit refers to the embodiment of the method for corresponding diagram 2, and here is omitted.
Preferably, in another embodiment, described transmitting element includes:
First sends subelement 1041, and being used at described comparative result is that resonance grade point is preset more than early warning
When being worth and be less than action preset value, send early warning signal to monitoring backstage.Realize when generation resonance is, to
Staff reports to the police, it is simple to staff processes.
Preferably, in another embodiment, described transmitting element includes:
Second sends subelement 1042, and being used at described comparative result is that resonance grade point is preset more than action
During value, mend Control protection system to string and send series compensation device bypass instruction.Realize reaching one in main transformer grade
The fixed order of severity, sends series compensation device bypass instruction, Intelligent treatment by mending Control protection system to string
Resonance problems, it is to avoid the generation of the lag issues of artificial treatment.
Fig. 8 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart, sees Fig. 8, discloses the high pressure main transformer multistage resonant processing means of another embodiment, including:
First acquiring unit 101 obtains high pressure main transformer quantity of information.First judgement unit 102 is according to described first
The high pressure main transformer letter information amount that acquiring unit 101 obtains differentiates whether main transformer occurs resonance and resonance to occur
Grade.Obtain occurring resonance when described first judgement unit 102 differentiates, and obtain the grade of main transformer resonance,
Described first judgement unit 102 is differentiated that the resonance grade point obtained is preset with early warning by the first comparing unit 103
Value and action preset value compare, it is thus achieved that comparative result.Second sends subelement 1041 according to resonance etc.
Level value, more than the comparative result of action preset value, sends series compensation device protection to string benefit Control protection system and refers to
Order.
Second acquisition unit 201 sends subelement 1041 described second and mends Control protection system transmission to string
After series compensation device bypass instruction, obtain current high pressure main transformer quantity of information.
The high pressure main transformer quantity of information acquired according to described second acquisition unit 201, the second judgement unit
202 judge whether main transformer occurs resonance, and the grade of resonance occurs；When described second judgement unit 202 is sentenced
During other main transformer generation resonance, it is humorous that described second judgement unit 202 differentiation is obtained by the second comparing unit 203
The grade point that shakes compares with preset value.When described second comparing unit 203 obtains resonance grade point more than dynamic
After making the comparative result of preset value, very first time judging unit 205 judges that described second comparing unit 203 is sentenced
The resonance grade point not obtained is both greater than whether the described action preset value time reaches T1, if not up to T1,
The most described second acquisition unit 201 continues to obtain high pressure main transformer quantity of information, and described second judgement unit 202 continues
Continuous whether described resonance is occurred and resonance grade differentiates, until described second comparing unit 203 differentiates
The resonance grade point obtained is both greater than the described action preset value time and reaches T1.When described second comparing unit
203 differentiate that the resonance grade point that obtains is both greater than the described action preset value time and reaches T1, then the 3rd send son
Unit 205 is mended Control protection system transmission to described string and is acted on the bypass instruction of another series compensation device.
By described very first time judging unit 204, the present embodiment judges that described second comparing unit 203 differentiates
The resonance grade point obtained is both greater than whether the described action preset value time reaches T1, to realize when resonance etc.
When level continues seriously to occur, send subelement 205 by the described 3rd and send out to described string benefit Control protection system
Send the bypass instruction acting on another series compensation device, it is achieved bypass a plurality of series compensation device humorous to accelerate the failure
The purpose shaken.
It should be noted that in the processing means of high pressure main transformer multistage resonant disclosed in the present embodiment, each
The specific works process of unit refers to the embodiment of the method for corresponding diagram 3, and here is omitted.
Fig. 9 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart, sees Fig. 9, discloses the high pressure main transformer multistage resonant processing means of another embodiment, including:
First acquiring unit 101 obtains high pressure main transformer quantity of information.First judgement unit 102 is according to described first
The high pressure main transformer letter information amount that acquiring unit 101 obtains differentiates whether main transformer occurs resonance and resonance to occur
Grade.Obtain occurring resonance when described first judgement unit 102 differentiates, and obtain the grade of main transformer resonance,
Described first judgement unit 102 is differentiated that the resonance grade point obtained is preset with early warning by the first comparing unit 103
Value and action preset value compare, it is thus achieved that comparative result.Second sends subelement 1042 according to resonance etc.
Level value, more than the comparative result of action preset value, sends series compensation device protection to string benefit Control protection system and refers to
Order.
First feedback reception unit 300 sends subelement 1042 described second and mends Control protection system to string
After sending series compensation device bypass instruction, the by-pass switch receiving string benefit Control protection system feedback has closed letter
Number.3rd acquiring unit 301 receives string at described first feedback reception unit 300 and mends Control protection system
After the by-pass switch closure signal of feedback, obtain current high pressure main transformer quantity of information.3rd judgement unit
The 302 high pressure main transformer quantity of information acquired according to described 3rd acquiring unit 301, it is judged that whether main transformer is sent out
Raw resonance, and there is the grade of resonance.When described 3rd judgement unit 303 differentiates that resonance free occurs,
The bypass that 4th transmission subelement 304 acts on series compensation device to described string benefit Control protection system transmission is opened
Close open command.
The present embodiment realizes resonance after one series compensation device of bypass and is destroyed, and differentiates according to the described 3rd
When unit 302 differentiates that obtaining resonance free occurs, the described 4th sends subelement 304 controls to described string benefit
Protection system sends the by-pass switch open command acting on series compensation device so that described series compensation device is again
Put into network system, again play the effect offsetting line inductance.
It should be noted that in the processing means of high pressure main transformer multistage resonant disclosed in the present embodiment, each
The specific works process of unit refers to the embodiment of the method for corresponding diagram 4, and here is omitted.
Figure 10 is the another kind of enforcement of the processing means of the realization process high pressure main transformer multistage resonant of disclosure of the invention
Example structure chart, sees Figure 10,
Disclose the high pressure main transformer multistage resonant processing means of another embodiment, including:
First acquiring unit 101 obtains high pressure main transformer quantity of information.First judgement unit 102 is according to described first
The high pressure main transformer letter information amount that acquiring unit 101 obtains differentiates whether main transformer occurs resonance and resonance to occur
Grade.Obtain occurring resonance when described first judgement unit 102 differentiates, and obtain the grade of main transformer resonance,
Described first judgement unit 102 is differentiated that the resonance grade point obtained is preset with early warning by the first comparing unit 103
Value and action preset value compare, it is thus achieved that comparative result.Second sends subelement 1042 according to resonance etc.
Level value, more than the comparative result of action preset value, sends series compensation device protection to string benefit Control protection system and refers to
Order.
First feedback reception unit 300 sends subelement 1042 described second and mends Control protection system to string
After sending series compensation device bypass instruction, the by-pass switch receiving string benefit Control protection system feedback has closed letter
Number.3rd acquiring unit 301 receives string at described first feedback reception unit 300 and mends Control protection system
After the by-pass switch closure signal of feedback, obtain current high pressure main transformer quantity of information.3rd judgement unit
The 302 high pressure main transformer quantity of information acquired according to described 3rd acquiring unit 301, it is judged that whether main transformer is sent out
Raw resonance, and there is the grade of resonance.When described 3rd judgement unit 302 differentiates that resonance free occurs,
The bypass that 4th transmission subelement 304 acts on series compensation device to described string benefit Control protection system transmission is opened
Close open command.
Send subelement 304 the 4th and act on series compensation device to described string benefit Control protection system transmission
After by-pass switch open command, the second feedback reception unit 305 receives string and mends Control protection system feedback
By-pass switch cut-off signal.
Second time judging unit 306 judges described first feedback reception unit the 300, second feedback reception list
Unit 305 is sequentially received by-pass switch has closed whether reach T2, if not reaching with the cut-off signal persistent period
To T2, the most described first acquiring unit 101 continues to obtain high pressure main transformer quantity of information, described first judgement unit
102 continuation described resonance whether occur and resonance grade differentiates, until described first feedback reception list
Unit the 300, second feedback reception unit 305 be sequentially received by-pass switch closed and cut-off signal continue
Whether the time reaches T2.When described first feedback reception unit the 300, second feedback reception unit 305 successively
Receive by-pass switch closed and the cut-off signal persistent period reach T2, then the 5th send subelement 307
Mend Control protection system to described string and send the instruction of series compensation device permanent bypass.
The present embodiment by described second time judgement unit 306 differentiate the first feedback reception unit 300, the
Two feedback reception unit 305 are sequentially received by-pass switch and have closed and whether the cut-off signal persistent period
Reach T2 it can be understood as, whether series compensation device because resonance occurs repeatedly to bypass, if the problems referred to above go out
Existing, show that series compensation device existence itself causes the problem of main transformer generation resonance, the most described 5th
Send subelement 307 to mend Control protection system to described string and send the instruction of series compensation device permanent bypass, thus right
Series compensation device carries out permanent bypass, in order to described series compensation device is keeped in repair by staff.
It should be noted that in the processing means of high pressure main transformer multistage resonant disclosed in the present embodiment, each
The specific works process of unit refers to the embodiment of the method for corresponding diagram 5, and here is omitted.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (14)
1. the processing method of a high pressure main transformer multistage resonant, it is characterised in that including:
Obtain high pressure main transformer quantity of information；
According to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance, and the grade of resonance occurs；
Relatively differentiate the resonance grade point obtained and preset value, it is thus achieved that comparative result；
Send order according to described comparative result main transformer multistage resonant is processed.
Method the most according to claim 1, it is characterised in that described according to high pressure main transformer quantity of information,
Judge whether main transformer occurs resonance, and the grade of generation resonance, including:
Described high pressure main transformer quantity of information is carried out Hilbert-Huang transform, it is thus achieved that spectrum information；
Judge whether resonance according to described spectrum information；
If generation resonance, calculate 1/2 time of spectrum information of main transformer quantity of information, 1/3 time, first-harmonic and 63
The root-mean-square virtual value of secondary interior harmonic wave；
The ratio of described root-mean-square virtual value with first-harmonic value is compared with threshold value；
When described root-mean-square virtual value and first-harmonic value ratio are less than threshold value, equal to each harmonic the most again
Root virtual value calculates；
When the ratio of described root-mean-square virtual value with first-harmonic value is more than or equal to threshold value, described root-mean-square is had
Valid value obtains as resonance grade point with the ratio of first-harmonic value.
Method the most according to claim 1, it is characterised in that described transmission according to comparative result is ordered
Main transformer multistage resonant is processed by order, including:
Described comparative result is that resonance grade point more than early warning preset value and is less than action preset value, to monitoring
Backstage sends early warning signal.
Method the most according to claim 1, it is characterised in that described transmission according to comparative result is ordered
Main transformer multistage resonant is processed by order, including:
Described comparative result is that described resonance grade point exceedes action preset value, mends Control protection system to string
Send string and mend bypass instruction, send early warning signal to monitoring backstage simultaneously.
Method the most according to claim 4, it is characterised in that send life according to described comparative result
After main transformer multistage resonant is processed by order, also include:
Obtain current high pressure main transformer quantity of information；
According to the described high pressure main transformer quantity of information acquired, it is judged that whether main transformer occurs resonance, and occurs
The grade of resonance；
If within the T1 time, differentiate that the resonance grade point obtained is both greater than described action preset value each time,
Mend Control protection system transmission to described string and act on the bypass instruction of another series compensation device.
6. according to the method described in claim 4 any one, it is characterised in that mend to string and control protection
After system sends string benefit bypass instruction, also include:
Receive string and mend the by-pass switch closure signal of Control protection system feedback；
Obtain current high pressure main transformer quantity of information；
According to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance；
If resonance free occurs, mend Control protection system to described string and send the by-pass switch of series compensation device
ON-and OFF-command.
Method the most according to claim 6, it is characterised in that mend Control protection system to described string
After sending the by-pass switch close commands of series compensation device, farther include:
Receive string and mend the by-pass switch cut-off signal of Control protection system feedback；
If within the T2 time, continuous several times receives by-pass switch closed and disconnected signal, mends to string and controls
Protection system sends permanent bypass instruction and described by-pass switch is forever disconnected action.
8. the processing means of a high pressure main transformer multistage resonant, it is characterised in that including:
First acquiring unit, is used for obtaining high pressure main transformer quantity of information；
First judgement unit, for according to described high pressure main transformer quantity of information, it is judged that whether main transformer occurs resonance,
And there is the grade of resonance；
First comparing unit, for differentiating that the resonance grade point obtained compares with preset value；
Transmitting element, carries out main transformer multistage resonant processing instruction for sending according to comparative result.
Method the most according to claim 8, it is characterised in that described first judgement unit includes:
Converter unit, for carrying out Hilbert-Huang transform to described main transformer quantity of information, it is thus achieved that spectrum information；
For the spectrum information obtained according to described converter unit, resonance generation judgement unit, judges that main transformer is
No generation resonance；
Computing unit, calculates in 1/2 time of spectrum information, 1/3 time, first-harmonic and 63 times of main transformer quantity of information
The root-mean-square virtual value of harmonic wave；
Threshold value comparing unit, for comparing described root-mean-square virtual value with threshold value with first-harmonic value ratio；
Resonance grade point acquiring unit, for when described root-mean-square virtual value and first-harmonic value ratio are more than threshold value
Time, obtain resonance grade point.
Device the most according to claim 8, it is characterised in that described transmitting element includes:
First sends subelement, for described comparative result be resonance grade point more than early warning preset value and
During less than action preset value, send early warning signal to monitoring backstage.
11. devices according to claim 8, it is characterised in that described transmitting element includes:
Second sends subelement, for when described comparative result is resonance grade point more than action preset value,
Mend Control protection system to string and send series compensation device bypass instruction.
12. devices according to claim 11, it is characterised in that also include:
Second acquisition unit, mends Control protection system transmission string for sending subelement described second to string
After mending device bypass instruction, obtain current high pressure main transformer quantity of information；
Second judgement unit, for the high pressure main transformer quantity of information acquired according to described second acquisition unit,
Judge whether main transformer occurs resonance, and the grade of resonance occurs；
Second comparing unit, for differentiating the resonance grade point obtained to described second judgement unit and preset
Value compares；
Very first time judging unit, is used for whether the time that judges reaches T1；
3rd sends subelement, judges that the time reaches T1 for described very first time judging unit, and at T1
In time, described second comparing unit all differentiates that the resonance grade point obtained is both greater than described action preset value,
Mend Control protection system transmission to described string and act on the bypass instruction of another series compensation device.
13. devices according to claim 11, it is characterised in that also include:
First feedback reception unit, sends out to string benefit Control protection system for sending subelement described second
After sending series compensation device bypass instruction, receive string and mend the by-pass switch closure signal of Control protection system feedback；
3rd acquiring unit, anti-for receiving string benefit Control protection system at described first feedback reception unit
After the by-pass switch closure signal of feedback, obtain current high pressure main transformer quantity of information；
3rd judgement unit, for the high pressure main transformer quantity of information acquired according to described 3rd acquiring unit,
Judge whether main transformer occurs resonance, and the grade of resonance occurs；
4th sends subelement, when described 3rd judgement unit differentiates that resonance free occurs, to described string
Mend Control protection system and send the by-pass switch open command acting on series compensation device.
14. devices according to claim 13, it is characterised in that also include:
Second feedback reception unit, sends subelement for the 4th and mends Control protection system transmission to described string
The bypass receiving string benefit Control protection system feedback after acting on the by-pass switch open command of series compensation device is opened
Close cut-off signal；
Second time judging unit, is used for whether the time that judges reaches T2；
5th sends subelement, judges that the time reaches T2 for described second time judging unit, and at T2
In time, described first feedback unit, the second feedback unit are sequentially received by-pass switch and have closed and
During cut-off signal, mend Control protection system to described string and send the instruction of series compensation device permanent bypass.
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