CN105870970B - Auto-manual quasi-simultaneous interconnecting method and device suitable for routine and digitizing station - Google Patents
Auto-manual quasi-simultaneous interconnecting method and device suitable for routine and digitizing station Download PDFInfo
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- CN105870970B CN105870970B CN201610341812.1A CN201610341812A CN105870970B CN 105870970 B CN105870970 B CN 105870970B CN 201610341812 A CN201610341812 A CN 201610341812A CN 105870970 B CN105870970 B CN 105870970B
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
- H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
Abstract
The present invention discloses the auto-manual quasi-simultaneous interconnecting method and device for being suitable for conventional and digitizing station, this method and device can realize the acquisition of digitlization and conventional simulation voltage, on-off model, it, will be in the reflection to synchronous dial plate of voltage difference, difference on the frequency and phase angle difference and after calculating the data processing of acquisition.In a manual mode, meet pressure difference, frequency difference, phase angle difference in the range of preparatory adjusting, when being detected simultaneously by closing switch amount signal, reclosing command is exported by digitlization amount and relay；Under automatic mode, when meeting combined floodgate condition, according to the leading time of setting, reclosing command is exported by digitlization amount and relay.The present invention improves existing instrument board and quasi- simultaneous interconnecting device simple function, operator is remained to manual and automatic presynchronization demand, and normal station, digitizing station, routine and the functional requirement for digitizing hybrid station are adapted to, reduce the workload of operation maintenance personnel.
Description
Technical field
The invention belongs to technical field of power systems, are related to a kind of quasi-simultaneous interconnecting method of electric system simultaneous interconnecting,
More particularly to a kind of auto-manual quasi-simultaneous interconnecting method and device for being suitable for routine and digitizing station simultaneously.
Background technique
Simultaneous interconnecting operation is frequently encountered in electric system, such as the simultaneous interconnecting of generating set and power grid, substation bus bar
With route paired running etc..Simultaneous interconnecting misoperation can cause serious harm to generator, or even influence stablizing for power grid and transport
Row.To guarantee going on smoothly for simultaneous interconnecting operation, method more typical at present has:
(1) related regulation and experience is combined to manually complete same period process by various instrument by operator；
(2) by having collection voltages analog quantity and position of the switch auxiliary contact, and there have relay to export to be conventional automatic
Quasi- simultaneous interconnecting device completes same period process；
(3) by have a digital data acquisition and number measure the digitlization automatic synchronization device that oral instructions send complete it is same
Phase process.
(4) patent CN201256299Y discloses a kind of auto-manual synchronization device, the device using On-off signal and
Relay output, object is mainly normal station.
The above method has some limitations.
Method (1) increases operator's workload, more demanding to operator's technical level, and there are maloperations etc.
Security risk.
Method (2) generally requires device and has voltage transformer, speed regulation, pressure regulation and closing relay etc., is passed by cable
Defeated all kinds of electrical quantity signals.The cable laying higher cost of one side long range, it is difficult in maintenance；On the other hand due to weak electric signal
It is difficult to long distance transmission, reliability is lower.
Method (3) develops comparatively fast after strong smart grid research practice work is opened by State Grid Corporation of China, but due to each
Area digitlization construction progress is different, and a considerable amount of areas are also in normal station or conventional and digitlization hybrid station (referred to as half
Digitizing station) state, digitalizer is difficult to substitute conventional equipment in a short time.
Method (4) uses On-off signal circuit, relay output loop and serial communication circuit, in digitlization or half
Word station is of limited application.
Due to the use habit and practical matter difference of user, different synchronization devices are mixed with method undoubtedly to increase fortune
The workload of row maintenance personnel, and routine for long range or Semi-digital station often will realize the quasi- same period by auxiliary equipment
Function, therefore, studying one kind and adapting to the quasi- simultaneous interconnecting device and method of conventional and digitized auto-manual is to be worth discussion
's.
Summary of the invention
It is an object of the present invention to propose a kind of auto-manual quasi-simultaneous interconnecting method and dress for adapting to routine and digitizing station
It sets, existing instrument board and quasi- simultaneous interconnecting device simple function is improved, remain operator to manually and automatically quasi-
The demand of the same period solves the problems, such as digitlization and analog quantity while acquisition and data synchronization processing, to adapt to normal station, number
Change station, routine and the functional requirement for digitizing hybrid station, reduces the workload of operation maintenance personnel.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station, this method include digitized voltage
Acquisition module, voltage transformer and A/D conversion module, data synchronization processing, GOOSE and hard contact switch amount input channel,
GOOSE and the output of idle contact signal, synchronous dial plate etc..
Solution and step of the invention is:
(1) acquisition with conventional simulation voltage signal is digitized.
Sampling is completed using voltage transformer in analog quantity side after A/D is converted, and digitlization side is using support digitized voltage
The module of acquisition protocols acquires, and voltage sample is completed after data synchronization processing.
(2) acquisition of on-off model is completed by digital quantity input or hard contact input, wherein on-off model includes
Manual mode, automatic mode, position of the switch contact, confirmation are boosted, and are depressured, and are accelerated, and are slowed down, the switching values such as combined floodgate.Digital quantity is defeated
Enter be with both hard contact inputs or relationship.
(3) data processing is carried out to voltage sampling signal and on-off model, calculated to the electricity simultaneously between side and system side
Pressure difference, difference on the frequency and phase angle difference are pressed, is shown in real time by synchronous dial plate.
(4) frequency modulation, pressure regulation and closing operation are carried out by digital output and the output of idle contact signal.Digital output and
The output of idle contact signal be with relationship, the two exports simultaneously.
Further, digitized voltage acquisition protocols module in above-mentioned steps (1), can for IEC61850-9-2 or
IEC60044-7 standard module.
Further, in above-mentioned steps (2) and step (4), digital quantity input and digital output are respectively GOOSE input
It is exported with GOOSE.
Further, in above-mentioned steps (1), for digital voltage amount acquire, for guarantee sampling accuracy, especially to
And side and system side side are analog input, when the other side is digitlization input, need to carry out data to digitized voltage same
Step processing, data synchronization processing detailed content are synchronization signal control and algorithm interpolation, and wherein synchronization signal control makes the quasi- same period
Grid-connecting apparatus is synchronous under clock signal effect with other combining units, then for network delay and analog quantity and number
The possible different problems of each cycle hits are measured, algorithm interpolation is used, complete digitized voltage processing.
Synchronization signal, which controls, time synchronization methods, the algorithm interpolation such as GPS clock synchronization, network clock synchronization can be used to can be used improved
Lagrange algorithm.
If fsFor the sample frequency of combining unit, uMUFor the digital voltage before processing, the extraction sample frequency of synchronization device
For fs', uPRB(λ) is the extraction sequence (λ=1,2,3 ...) of sampled voltage, enables sampling sequence numberL is most less than m
Following improved Lagrange interpolation algorithm can be used in big integer:
uPRB(λ)=0.5 (m-l) (m-l-1) uMU(l+2)-(m-l)(m-l-2)uMU(l+1)+0.5(m-l-1)(m-l-2)
uMU(l)
Further, synchronous dial plate uses multiple lamp groups to indicate angular difference lamp at a circle in above-mentioned steps (3), at multiple angles
Poor lamp group at circle built in three lamps, respectively frequency difference, pressure difference and synchronizing lamp, frequency difference lamp is associated with real-time frequency difference, pressure difference
Lamp is associated with real-time pressure difference, in order to reduce the quantity of lamp, while distinguishing convenient for intuitive, frequency difference and pressure difference can use polychrome
LED light, to indicate pressure difference, frequency difference state with different colours, in which:
Angular difference lamp lighting method is: when the simultaneously value of side and system side real-time phase angle difference is near a certain angular difference lamp, lighting
The angular difference lamp extinguishes remaining angular difference lamp；
Frequency difference lamp lighting method is: when the simultaneously value of side and system side real-time frequency difference is higher than preset first threshold
It shows the first color, second of color is shown when lower than preset second threshold, in preset first range
When show the third color；
Pressure difference lamp lighting method is: aobvious when the simultaneously value of side and the real-time pressure difference of system side is higher than preset first threshold
Show the first color, second of color is shown when lower than preset second threshold, when in preset second range
Show the third color；
Synchronizing lamp lighting method is: to and side and system side real-time phase angle difference, pressure difference, frequency difference all presetting third
It lights when in range, otherwise extinguishes.
Further, more accurately to show 0 ° of angle phase angle difference nearby, while playing the role of emphasizing, the angular difference on circle
Lamp can be in uneven distribution, and lamp is more dense near 0 °, and angular resolution is higher.
Typically, 32 angular difference lamps are set on synchronous dial plate circle, if being followed successively by lamp in the direction of the clock for lamp 1 at 0 °
2~lamp 32 is Δ δ to the phase difference of voltage simultaneously between side and system side, and the method for lighting angular difference lamp m is as follows:
Wherein, m is natural number, and value range is 1 to 32.
For beauty and convenient for distinguishing, emphasizing, the angular difference lamp not existed together can be shown with different colors, as 0 ° in attached drawing 2
The lamp green light at place, other lamp amber lights in ± 15 °, the lamp greater than 15 ° and less than -15 ° are red colored lamp.
Further, in above-mentioned steps (4), frequency modulation, pressure regulation and closing operation method are:
Under manual mode, only when detecting boosting (or decompression) on-off model, GOOSE and relay are just exported and are risen
Pressure (or decompression) instruction；Only detecting that GOOSE and relay just export acceleration when accelerating (or deceleration) on-off model
(or deceleration) instruction；False switching operates under manual mode in order to prevent, only meets pressure difference, frequency difference, phase angle difference and adjusts in advance
In the range of, when being detected simultaneously by closing switch amount signal, GOOSE and relay just export reclosing command.
Under automatic mode, when pressure difference, frequency difference are unsatisfactory for the range adjusted in advance, if to simultaneously side voltage lower than adjusting in advance
Range, GOOSE exports boost instruction, while booster relay is closed；If being higher than preparatory setting range, GOOSE to simultaneously side voltage
Output buck instruction, while turndown relay is closed；If being lower than preparatory setting range to simultaneously side frequency, GOOSE output accelerates to refer to
It enables, while accelerating relay is closed；If being higher than preparatory setting range to simultaneously side frequency, GOOSE exports deceleration instruction, slows down simultaneously
Relay closure；When meeting combined floodgate condition, according to preset leading time, closed a floodgate by GOOSE and relay output
Instruction.
For that can realize speed regulation and pressure regulation fast and accurately, GOOSE output and relay output time are periodic side
Wave, output pulse width and cycle time can adjust in advance.
For the reliability that enhancing is closed a floodgate, the possibility of maloperation is reduced, when pressure difference, any model for being unsatisfactory for adjusting in advance of frequency difference
When enclosing, open close a floodgate does not allow signal (mark).The inspection same period letter of quasi- same period signal with leading time and detection conditions present
It number is calculated using different algorithm, respectively corresponding asynchronous switch-on signal (or outlet of closing a floodgate) and closing a floodgate allows signal (or to close a floodgate fair
Perhaps it exports).
When being exported using conventional relays contact, closing a floodgate allows signal that can allow relay to close a floodgate, only in pressure difference, frequency
Difference, phase angle difference in the range of preparatory adjusting when, closing a floodgate allows relay just be closed, combined floodgate permission relay and combined floodgate relay
Device series connection access output loop.
The present invention also provides a kind of quasi- simultaneous interconnecting device of auto-manual suitable for routine and digitizing station, feature exists
In including: acquisition module, input module, data processing module, display module, output module.
The acquisition module includes module, the data simultaneous module, mutual induction of voltage for supporting digitized voltage acquisition protocols
Device and A/D conversion module, digital quantity and hard contact switch amount acquisition module；
The input module includes the functions such as device fixed value adjusting, display screen switching；
The display module is shown including synchronous dial plate, device interface；
The output module includes digital output module and relay output module；
The data processing module carries out processing and logic calculation to signal, data, man-machine interface.
Further, the module of the support digitized voltage acquisition protocols, can for using IEC61850-9-2 or
The module of IEC60044-7 standard.
Further, the digital quantity input module and digital quantity output module be respectively GOOSE input module and
GOOSE output module.
Further, the relay output module includes and closes a floodgate to allow relay and closing relay, close a floodgate allow after
Electric appliance and closing relay series connection access output loop.Closing a floodgate allows the folding of relay and the folding of closing relay to use not
Same control method.
Further, frequency difference is arranged using multiple lamp groups at a circle in the synchronous dial plate in circle, pressure difference with it is synchronous
Lamp；Lamp is associated with to simultaneously side and system side real-time phase angle difference on circle, is in uneven distribution, and lamp is more dense near 0 °, frequency
Poor lamp is associated with real-time frequency difference, and pressure difference lamp is associated with real-time pressure difference, and synchronizing lamp meets pressure difference, frequency difference, phase angle difference at the same time
When light.
Further, the lamp not existed together can show with different colors, such as the lamp green light in attached drawing 20 °, ± 15 °
Interior other lamp amber lights, the lamp greater than 15 ° and less than -15 ° are red colored lamp.Multiple lamp groups at circle built in three lamps,
Respectively frequency difference, pressure difference and synchronizing lamp, middle frequency difference and pressure difference use Multicolor LED lamp, indicate pressure difference, frequency difference shape with different colours
State.Such as available yellow indicates that red indicates to be higher than preparatory predetermined upper limit value, and green is indicated preparatory lower than lower limit value is preset
In range of set value.Synchronizing lamp use green light, when frequency difference, pressure difference and phase angle difference all within the preset range when light.
After adopting the above scheme, digitlization may be implemented in quasi- simultaneous interconnecting device and convention amount is output and input, so as to
Adapt to conventional and digitizing station functional requirement.In addition, device supports manually or automatically same period, and included synchronization dial plate can be with
Accurate visual indication current differential pressure, frequency difference and phase angle difference state, facilitate operator to carry out the manual same period, reduce operation and maintenance
The workload of personnel.
Detailed description of the invention
Fig. 1 is the automatic presynchronization combination method operation schematic diagram of the embodiment of the present invention.
Fig. 2 is the same period dial plate schematic diagram of the embodiment of the present invention.
Fig. 3 is logical flow chart of the embodiment of the present invention.
Fig. 4 is the automatic synchronization device structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Below with reference to drawings and the specific embodiments, technical solution of the present invention is described in detail.
The embodiment of the present invention provides a kind of auto-manual quasi-simultaneous interconnecting method for adapting to routine and digitizing station, including such as
Lower step:
(1) digitlization and the acquisition of conventional simulation voltage signal are completed.
When simultaneously side and system side are analog input, using voltage transformer, voltage is completed after A/D is converted and is adopted
Sample；When simultaneously side and system side are digitlization input, using IEC61850-9-2 or IEC60044-7 standard, voltage is completed
Sampling；When being analog input to simultaneously side and system side side, when the other side is digitlization input, analog quantity side uses voltage mutual
Sensor completes sampling after A/D is converted, and digitlization side uses IEC61850-9-2 or IEC60044-7 standard, at data synchronization
Voltage sample is completed after reason.
Specifically, in attached drawing 1, acquisition module includes digital module and conventional simulation amount acquisition module, for digitlization
Voltage, using IEC61850-9-2 or IEC60044-7 standard acquisition；For conventional analog voltage amount, mutual induction of voltage is used
Device and A/D conversion, complete sampling.
Digital voltage amount is acquired, for the accuracy for guaranteeing sampling, data synchronization processing, number are carried out to digitized voltage
According to synchronization processing method be synchronization signal control and software algorithm interpolation, wherein synchronization signal control make quasi- simultaneous interconnecting device and
Other combining units are synchronous under clock signal effect, and synchronization signal control can be completed by GPS clock synchronization or network clock synchronization.
May be different for network delay and analog quantity and digital quantity each cycle hits, use software algorithm interpolation
It is handled, interpolation algorithm uses improved Lagrange interpolation algorithm, if fsFor the sample frequency of combining unit, uMUFor processing
Preceding digital voltage, uPRB(λ) is the extraction sequence (λ=1,2,3 ...) of sampled voltage, and the extraction sample frequency of synchronization device is
fs', enable sampling sequence numberL is the maximum integer less than m, and interpolation algorithm is as follows:
uPRB(λ)=0.5 (m-l) (m-l-1) uMU(l+2)-(m-l)(m-l-2)uMU(l+1)+0.5(m-l-1)(m-l-2)
uMU(l)
(2) acquisition of on-off model is completed by GOOSE or hard contact input, wherein on-off model includes manual mould
Formula, automatic mode, position of the switch contact, confirmation are boosted, and are depressured, and are accelerated, and are slowed down, the switching values such as combined floodgate.
Specifically, in attached drawing 1, on-off model can input for GOOSE, or hard contact input, at data
When reason, the two be or relationship.The on-off model of acquisition need to include manual mode, automatic mode, position of the switch contact, really
Recognize, boost, be depressured, accelerate, slows down, the switching values such as combined floodgate.
It before the same period starts, needs to carry out same period confirmation, by judging that manual mode and automatic mode switching value judge
It is manual mode or automated manner.Boosting is depressured, and is accelerated, and is slowed down, and closing switch amount participates in logic in a manual mode and sentences
It is disconnected.
Specifically, the time started same period judges according to confirmation switching signal in attached drawing 3；Artificial liter under manual mode
Pressure decompression, accelerates, slows down, order of closing a floodgate, and respectively corresponds boosting, decompression, acceleration, deceleration, closing switch amount signal.
(3) it through data processing, calculates to voltage difference, difference on the frequency and the phase angle difference simultaneously between side and system side, it is aobvious in real time
Show on synchronous dial plate.
Specifically, data processing is carried out to the voltage of acquisition and switching value, wherein voltage difference calculation formula are as follows:
Wherein to simultaneously side and system side secondary voltage sampled value, for according to the calculated voltage effective value of data of acquisition；
It is the definite value that can be adjusted to simultaneously bis- rated value in side and system side PT, PT rated values, is adjusted according to live PT no-load voltage ratio situation；
It is the definite value that can be adjusted to simultaneously the rated value in side and system side voltage, the secondary rated value of voltage, is under normal operation
Voltage value.
For synchronous dial plate using multiple lamp groups at a circle, circle is interior to be arranged frequency difference, pressure difference and synchronizing lamp；On circle lamp with to
And side and system side real-time phase angle difference are associated, are in uneven distribution, lamp is more dense near 0 °, frequency difference lamp and real-time frequency difference phase
Association, pressure difference lamp is associated with real-time pressure difference, and synchronizing lamp is lighted when meeting pressure difference, frequency difference, phase angle difference at the same time.
Specifically, in attached drawing 2, synchronous dial plate is using 32 polychromatic light compositions, wherein using 11 within the scope of ± 15 °
Lamp, each lamp resolution ratio are 3 °, remaining each lamp resolution ratio is 15 °.For lamp green beautiful and convenient for distinguishing, at 0 °
Lamp, other lamp amber lights in ± 15 °, the lamp greater than 15 ° and less than -15 ° are red colored lamp.
It is Δ δ to the angular difference simultaneously between side and system side if being followed successively by 2~lamp of lamp 32 in the direction of the clock for lamp 1 at 0 °,
The algorithm for lighting angular difference lamp m is as follows:
32 lamp groups at circle built in three lamps, respectively frequency difference, pressure difference and synchronizing lamp, middle frequency difference and pressure difference are adopted
With Multicolor LED lamp, pressure difference, frequency difference state are indicated with different colours.It indicates to be lower than with yellow in embodiment and presets lower limit value,
Red indicates to be higher than preparatory predetermined upper limit value, green to indicate within the scope of preset value.Synchronizing lamp uses green light, when frequency
Difference, pressure difference and phase angle difference all within the preset range when light.
(4) frequency modulation, pressure regulation and closing operation are carried out by GOOSE and the output of idle contact signal.
Specifically, in attached drawing 3, under manual mode, only when detecting boosting (or decompression) on-off model, GOOSE
Boosting (or decompression) instruction is just exported with relay；Only detect accelerate (or slow down) on-off model when, GOOSE and after
Electric appliance just exports acceleration (or deceleration) instruction；False switching operates under manual mode in order to prevent, only meets pressure difference, frequency difference, phase
Angular difference is in the range of preparatory adjusting, and when being detected simultaneously by closing switch amount signal, GOOSE and relay just export combined floodgate and refer to
It enables.
Under automatic mode, when pressure difference, frequency difference are unsatisfactory for the range adjusted in advance, if to simultaneously side voltage lower than adjusting in advance
Range, GOOSE exports boost instruction, while booster relay is closed；If being higher than preparatory setting range, GOOSE to simultaneously side voltage
Output buck instruction, while turndown relay is closed；If being lower than preparatory setting range to simultaneously side frequency, GOOSE output accelerates to refer to
It enables, while accelerating relay is closed；If being higher than preparatory setting range to simultaneously side frequency, GOOSE exports deceleration instruction, slows down simultaneously
Relay closure；When meeting combined floodgate condition, according to preset leading time, closed a floodgate by GOOSE and relay output
Instruction.
Auto-adjustment control word is also added in 3 embodiment of attached drawing under automatic mode, allows user in automatic mode
It does not automatically adjust.
For that can realize speed regulation and pressure regulation fast and accurately, GOOSE output and relay output time are periodic side
Wave, output pulse width and cycle time can adjust in advance.For convenience of adjusting, the integral multiple that the period can adjust as output pulse width, such as week
Phase adjusting is 2s, and pulsewidth adjusting is 500ms.
For the reliability that enhancing is closed a floodgate, the possibility of maloperation is reduced, when pressure difference, any model for being unsatisfactory for adjusting in advance of frequency difference
When enclosing, open close a floodgate does not allow signal.The inspection same period signal of quasi- same period signal with leading time and detection conditions present uses
Different algorithms calculates, and respectively corresponding asynchronous switch-on signal (outlet) and closing a floodgate allows signal (outlet).Such as same period switching signal
Judged using software, closing a floodgate allows signal to judge using hardware；Or software algorithm is used, but the incomplete phase of algorithm verification scheme
Together.When being exported using conventional relays contact, closing a floodgate allows signal that can allow relay to close a floodgate, only in pressure difference, frequency difference, phase
Angular difference in the range of preparatory adjusting when, closing a floodgate allows relay just be closed, combined floodgate permission relay and closing relay string
Couple into output loop.
The embodiment of the present invention also provides a kind of quasi- simultaneous interconnecting device of auto-manual for adapting to routine and digitizing station, the dress
It sets including acquisition module, input module, data processing module, display module, output module.
As shown in Fig. 4, acquisition module includes digitized voltage acquisition module, data simultaneous module, voltage in embodiment
Mutual inductor and A/D conversion module, GOOSE and hard contact switch amount acquisition module；Input module includes device fixed value adjusting, display
Screen switching function；Signal and data that data processing module acquires acquisition module, to the definite value operation of input module and people
Machine interface instructions are handled, and after logic calculation, result is exported to output module and display module；Display module tool
Standby synchronous dial plate and display function；Output module includes GOOSE output module and relay output module, and wherein relay exports
Module includes acceleration, slows down, boosting, decompression, close a floodgate permission, closing relay.
Specifically, digitized voltage acquisition module supports IEC61850-9-2 and IEC60044-7 standard, can acquire support
The digitized voltage of IEC61850-9-2 and IEC60044-7 standard；Data simultaneous module supports device under clock signal effect
It is synchronous, support GPS clock synchronization or network clock synchronization；
Switching value acquisition module include acquisition manual mode, automatic mode, position of the switch contact, confirmation, boosting, decompression,
The switching values such as acceleration, deceleration, combined floodgate.
As shown in Fig. 2, for synchronous dial plate using multiple lamp groups at a circle, circle is interior to be arranged frequency difference, pressure difference and synchronizing lamp；
Lamp is associated with to simultaneously side and system side real-time phase angle difference on circle, is in uneven distribution, lamp is more dense near 0 °, frequency difference lamp
Associated with real-time frequency difference, pressure difference lamp is associated with real-time pressure difference, and synchronizing lamp meets pressure difference, frequency difference, phase angle difference time point at the same time
It is bright.
In 2 embodiment of attached drawing, synchronous dial plate is using 32 lamp groups at wherein using 11 lamps within the scope of ± 15 °, often
A lamp resolution ratio is 3 °, remaining each lamp resolution ratio is 15 °.
It synchronizes the lamp at dial plate difference to be shown with different colors, the lamp green light at 0 °, other lamps are yellow in ± 15 °
Colored lights, the lamp greater than 15 ° and less than -15 ° are red colored lamp.
Multiple lamp groups at circle built in three lamps, respectively frequency difference, pressure difference and synchronizing lamp, middle frequency difference and pressure difference are adopted
With Multicolor LED lamp, the different conditions of pressure difference, frequency difference are indicated with yellowish green red three kinds of colors.Wherein yellow is indicated to be lower than and be preset
Lower limit value, red indicates to be higher than preparatory predetermined upper limit value, green to indicate within the scope of preset value.Synchronizing lamp is using green
Lamp, when frequency difference, pressure difference and phase angle difference all within the preset range when light.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (9)
1. a kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station, which is characterized in that include following step
It is rapid:
Step (1) is completed using voltage transformer and after A/D is converted to sample to analog quantity；To digital quantity using support digitlization
The module of voltage acquisition agreement completes sampling；It is adopted voltage is completed after the synchronized signal control of above-mentioned sampling and algorithm interpolation processing
Sample；
The algorithm interpolation processing uses improved Lagrange algorithm, specific interpolation algorithm are as follows:
uPRB(λ)=0.5 (m-l) (m-l-1) uMU(l+2)-(m-l)(m-l-2)uMU(l+1)+0.5(m-l-1)(m-l-2)uMU
(l)；
Wherein, fsFor the sample frequency of combining unit, uMUFor the digital voltage before processing, uPRB(λ) is the extraction sequence of sampled voltage
Column, λ=1,2,3 ..., fs' be synchronization device extraction sample frequency, sampling sequence numberL is whole less than the maximum of m
Number；
Step (2) is inputted by digital quantity or the acquisition of hard contact input completion on-off model；
Step (3) carries out data processing to voltage sampling signal and on-off model, shows voltage pressure in real time by synchronous dial plate
Difference, difference on the frequency and phase angle difference state；
Step (4) carries out frequency modulation, pressure regulation and closing operation by digital output and the output of idle contact signal.
2. a kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station as described in claim 1, special
Sign is: the module of the digitized voltage acquisition protocols is the module using IEC61850-9-2 or IEC60044-7 standard；
The digital quantity input and digital output are respectively GOOSE input and GOOSE output.
3. a kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station as described in claim 1, special
Sign is: the synchronous dial plate using multiple angular difference lamp groups at circle indicate to and side and system side real-time phase angle difference,
Multiple angular difference lamp groups at circle built in three lamps, respectively frequency difference lamp, pressure difference lamp and synchronizing lamp, in which:
Angular difference lamp lighting method is to light this when the simultaneously value of side and system side real-time phase angle difference is in pre-set range
Angular difference lamp extinguishes remaining angular difference lamp；
Frequency difference lamp lighting method be when and the value of side and system side real-time frequency difference be greater than setting first threshold when show first
Kind of color, lower than setting second threshold value when show second of color, show third when in preset first range
Kind color；
Pressure difference lamp lighting method be when and the value of side and the real-time pressure difference of system side be higher than preset third threshold value when show the
A kind of color shows second of color when lower than preset second threshold, show when in preset second range
The third color；
Synchronizing lamp lighting method is to simultaneously side and system side real-time phase angle difference, pressure difference, frequency difference all in preset third range
It lights when interior, otherwise extinguishes.
4. a kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station as claimed in claim 1 or 3,
Be characterized in that: 32 angular difference lamps are arranged in the synchronous dial plate, if being followed successively by 2~lamp of lamp 32 in the direction of the clock for lamp 1 at 0 °,
It is Δ δ to the phase difference of voltage simultaneously between side and system side, the algorithm for putting bright light n is as follows:
Wherein, n is natural number, and value range is 1 to 32.
5. a kind of auto-manual quasi-simultaneous interconnecting method suitable for routine and digitizing station as described in claim 1, special
Sign is: the inspection same period signal of the quasi- same period signal with leading time and detection conditions present is calculated using different algorithms, point
Not corresponding to the switching signal of same period outlet and closing a floodgate allows signal.
6. a kind of quasi- simultaneous interconnecting device of auto-manual suitable for routine and digitizing station, it is characterised in that: including acquiring mould
Block, input module, data processing module, display module, output module, in which:
Acquisition module includes the module for supporting digitized voltage acquisition protocols, data simultaneous module, voltage transformer and A/D conversion
Module, digital quantity input module and hard contact switch amount acquisition module；
Input module includes device fixed value adjusting module, display screen switching module；
Display module includes synchronous dial plate, device interface display module；Output module includes digital output module and relay
Output module；
Signal and data that data processing module acquires acquisition module instruct the definite value operation of input module and man-machine interface
It is handled, result is exported to output module and display module；
Synchronous dial plate is using multiple lamp groups at a circle, and lamp is in uneven distribution on circle, 0 ° nearby lamp it is more dense, in circle
Frequency difference lamp, pressure difference lamp and synchronizing lamp are set, and frequency difference lamp and pressure difference lamp use Multicolor LED lamp, synchronizing lamp is in pressure difference, frequency difference, phase
Angular difference all within the preset range when light.
7. a kind of quasi- simultaneous interconnecting device of auto-manual suitable for routine and digitizing station as claimed in claim 6, special
Sign is: the module of the support digitized voltage acquisition protocols, to use IEC61850-9-2 or IEC60044-7 standard
Module；The digital quantity input module and digital quantity output module is respectively GOOSE input module and GOOSE output mould
Block.
8. a kind of quasi- simultaneous interconnecting device of auto-manual suitable for routine and digitizing station as claimed in claim 6, special
Sign is: described relay output module includes to close a floodgate to allow relay and closing relay, and closing a floodgate allows relay and combined floodgate
Relay series connection access output loop.
9. a kind of quasi- simultaneous interconnecting device of auto-manual suitable for routine and digitizing station as claimed in claim 6, special
Sign is: the synchronous dial plate using 32 lamp groups at a circle, every 3 ° of settings, one lamp between -15 °~15 °, 15 °~
Every 30 ° of settings, one lamp between 180 ° and -15 °~-180 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610341812.1A CN105870970B (en) | 2016-05-22 | 2016-05-22 | Auto-manual quasi-simultaneous interconnecting method and device suitable for routine and digitizing station |
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| CN201610341812.1A CN105870970B (en) | 2016-05-22 | 2016-05-22 | Auto-manual quasi-simultaneous interconnecting method and device suitable for routine and digitizing station |
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| Publication Number | Publication Date |
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| CN105870970A CN105870970A (en) | 2016-08-17 |
| CN105870970B true CN105870970B (en) | 2019-01-08 |
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| CN107546778B (en) * | 2017-08-21 | 2020-02-21 | 许继集团有限公司 | Hydropower station intelligent in-situ control system and method based on IEC61850 standard |
| CN114264941B (en) * | 2021-11-01 | 2024-03-26 | 南方电网数字电网研究院有限公司 | Reclosing lead time determining method and device and relay protection equipment |
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| CN201256299Y (en) * | 2008-07-29 | 2009-06-10 | 国网电力科学研究院 | Manual and automatic integrated synchronizer device |
| CN103792419B (en) * | 2014-03-04 | 2016-01-20 | 济南大学 | Realize analog quantity and mix the synchronous sampling method accessed with digital quantity |
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