CN106257785A - A kind of Coal Mine Power Network distributed network protection method based on GOOSE - Google Patents
A kind of Coal Mine Power Network distributed network protection method based on GOOSE Download PDFInfo
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- CN106257785A CN106257785A CN201610729341.1A CN201610729341A CN106257785A CN 106257785 A CN106257785 A CN 106257785A CN 201610729341 A CN201610729341 A CN 201610729341A CN 106257785 A CN106257785 A CN 106257785A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
Abstract
The present invention is a kind of Coal Mine Power Network distributed network protection method based on GOOSE: the GOOSE signal comprising the information such as protection startup, circuit breaker lock, malfunctioning, tripping operation is participated in logical judgment as internal logic input by this structure, is configured in the protection device of decentralized configuration by relay protective scheme by SCL Remote configuration instrument；Protection device carries out information sharing by GOOSE network, and processes the input signals such as network G OOSE signal and logical judgment, exports corresponding GOOSE and protects signal, it is achieved distributed network protection function.Distributed network protection method is divided into route protection, bus protection, ground protection and differential protection according to the relay protective scheme implemented.Distributed network protection based on GOOSE can effectively solve bypass the immediate leadership tripping operation and the single-phase earthing non-selectivity problem of current Coal Mine Power Network, possesses good reliability, quick-action and selectivity, also meets the development trend that relay protection " formula on the spot " configures.
Description
Technical field
The present invention relates to Coal Mine Power Distribution System resist technology, particularly relate to a kind of distributed network protection based on GOOSE
Method.
Background technology
China's coal-mine electric power system is multi-stage irradiation shape powering mode mostly, and subsurface environment is complicated, and humid environment, space are narrow
Narrow, and containing inflammable and explosive methane gas, this constitutes threat to the work that down-hole electrical equipment is safe and reliable, therefore well
The probability of lower generation accident of power supply is the biggest.The common power supply trouble in colliery has short circuit and earth fault, and generally there is short circuit more
Level tripping operation and ground connection non-selectivity trip phenomenon.
The relay protection progression of current Coal Mine Power Distribution System is more, and operation time limit leeway is little, and power system is to colliery electricity
The protection time limit value of the electric power incoming line of net is general all little, and according to general time limit ladder principle, the time limit of subordinate's protection should compare
In few 0.5 or 0.7 second of the time limit of higher level's protection, owing to the progression of Coal Mine Power Network circuit is more, therefore the selectivity of relay protection is very
Customers ' Legal Right.
And the setting method disunity of relay protection, the determination of relay protection setting value combines operation of power networks often
Actual dependence experience determines.But being as the formation of coal enterprise's internal power supply system, electric network composition is complicated, and electric pressure increases
Many, empirically it is worth the protective relaying device adjusted and just seems unreliable, its major defect is easily to make protective relaying device
Lose selectivity, easily cause trip phenomenon of bypassing the immediate leadership.
It addition, domestic existing protection device is mostly according to the apparatus function different hardware platform of design, defencive function fixes,
Single, protection device is various, causes waste and the repeated work of hardware resource, be also unfavorable for protection device hardware standardization and
The software implementation configuration of protection.The most distributed arrangement of down-hole protection device, protects and configures into formula on the spot, and the method for there is no realizes long-range
Integrated configuration feature.Existing protection device be mostly based on device itself gather fault message to realize relay protection, this side
Formula controls simple, it is easy to accomplish, but available fault message is single, and many protection philosophies based on information fusion cannot be applied.And
Each switch room is independent of one another, it is impossible to communication, coordinates difficulty, and the selectivity of relay protection is difficult to be guaranteed.
Along with further investigation and the all-round construction of intelligent substation, Protection Technology based on network conveying type starts to push away
Wide application.By GOOSE net peer switch switching value and analog quantity fault message between protection device, it is achieved information sharing, and will
Protection philosophy based on information fusion is combined and is applied, it is achieved the distributed network protection of Coal Mine Power Network.Use GOOSE net
Passing analog quantity and switching value fault message mutually, as internal logic input, GOOSE signal is participated in logical judgment, protection is reliable
Property, selectivity and quick-action are higher.Intelligent substation technology, switch is utilized to support that defencive function configures on the spot, simultaneously also can be real
The SCL long-range configuration of existing defencive function, can carry out defencive function configuration, effectively to on-the-spot protection device at dispatching terminal
Improve work efficiency while, it is possible to ensure configuration accuracy and concordance.
Summary of the invention
The technical problem to be solved in the present invention is a kind of protection scheme of design, needs to be adapted to the multistage system of powering of underground coal mine
System, protection scheme relatively traditional relay protection scheme should have significant advantage in terms of quick-action, reliability and selectivity, can be effective
Solve colliery supply line to bypass the immediate leadership trip accident and non-selectivity trip accident.This protection scheme also should use currently advanced intelligence
Can transformer station's GOOSE resist technology.
In order to solve the problems referred to above, design a kind of distributed network protection technology based on GOOSE, including distributed network
Route protection, distributed network bus protection, distributed network differential protection and distributed network ground protection, it is characterised in that
The protection device of decentralized configuration carries out information sharing by GOOSE network, defeated to network G OOSE signal etc. according to relay protective scheme
Enter signal to carry out processing and logical judgment, output corresponding protection GOOSE signal, it is achieved distributed network protection function.
Concrete resist technology is as follows: 1.SCL Remote configuration instrument, can be according to the different defencive function of each protection device
Demand carries out the configuration of corresponding SCL equipment, such as line differential protection, bus protection, the stage current protection of circuit, line
The common protections of Coal Mine Power Network such as road ground protection, design corresponding protection act logic, will comprise the SCL of corresponding relay protective scheme
Configuration file is configured to the protector at scene from dispatching terminal unification by SCL Remote configuration instrument, without carrying out at the scene
Configuration, and can at dispatching terminal according to its configuring condition to function application real-time update.
2. distributed network route protection still uses overcurrent criterion principle, uses jump-value of current mode to start, its
Relay protective scheme is, after protection starts, switchs and startup information is sent to higher level's switch in GOOSE mode, receives subordinate simultaneously and open
Close the GOOSE information uploaded, and carry out logical judgment, decide whether to trip, it is contemplated that subordinate's switch has malfunctioning
May, therefore subordinate's switch GOOSE signal packet includes route protection startup GOOSE signal and subordinate switch GOOSE malfunctioning jumping letter
Number, unlike original logical judgment, the GOOSE signal of subordinate's switch also serves as logic input and carries out breakdown judge.
3. distributed network bus protection is arranged in service entrance switch, circuit be short-circuited fault time, inlet wire and feeder line intelligence
Overcurrent can all be detected by switch, its relay protective scheme is, inlet wire and feeder line intelligent switch power directional element failure judgement are positioned at
Positive direction, therefore feeder line intelligent switch can not start GOOSE signal, bus event to service entrance switch protection device transmission bus protection
During barrier, feeder line intelligent switch then detects that fault is positioned at opposite direction, does not send bus protection and does not start GOOSE signal, examines meanwhile
Consider and switch malfunctioning possibility to subordinate, therefore malfunctioning for GOOSE jumping signal is also inputted as logic by bus protection logic.
4. distributed network ground protection technology, can realize multi information in same switch, and the ground connection of many criterions is protected
Protecting, one-phase ground protection is completed jointly by all feeder line intelligent switch on same bus section, busbar section and inlet wire intelligent switch, its protection
Logic is, after there is earth fault, each intelligent switch protection device shares analog quantity and the switch of all branch roads by GOOSE net
Amount fault message, has independent ground protection algorithm in each intelligent switch protection device, whether this branch road of independent judgment occurs
Fault, and decide whether that action is in tripping operation.
5. distributed network differential protection is divided into distributed network circuit longitudinal differential protection and distributed network transformator
Differential protection, has been coordinated by the intelligent switch at circuit two ends, and circuit longitudinal differential protection logic is two ends intelligent switch lines
After road pilot protection starts, detect power direction, it is judged that fault direction, and result is sent to circuit with GOOSE message form
Offside switchs, and GOOSE signal is judged whether to need tripping operation by each intelligent switch as logic input；Transformer differential protection also leads to
Crossing both sides intelligent switch to have coordinated, by GOOSE transmitting switch amount or analog quantity, its relay protective scheme is, after fault occurs, to become
Depressor protection starts, intelligent switch failure judgement direction, if fault occurs outside district, low-pressure side intelligent switch protection device is to height
Pressure side switch sends the anti-jump signal of GOOSE, if transformer fault, low-pressure side intelligent switch protection device does not the most send this letter
Number, then transformator both sides switch trip, excises failure transformer.
The invention has the beneficial effects as follows: the control functional software of the protection device of each decentralized configuration, modularized design,
Different defencive functions according to Coal Mine Power Network need to carry out corresponding software arrangements, design corresponding protection act logic, will bag
Configuration file containing protection act logic is configured in the protection device of intelligent switch, can realize different defencive functions, and not
Need hardware to be replaced and transforms, the most cost-effective standardization also achieving hardware and the software implementation of function.Utilize
Intelligent substation technology, intelligent switch support defencive function configures on the spot, and the SCL long-range that simultaneously also can realize defencive function is joined
Put, at dispatching terminal, on-the-spot each protection device can be carried out centralized configuration, while effectively raising work efficiency, it is possible to protect
The accuracy of card configuration and concordance.Distributed network protection technology based on GOOSE follows IEC 61850 agreement, and intelligence is opened
Communicated by GOOSE network between the protection device closed, peer switch data, it is possible to effectively realize information Real-Time Sharing, and will
Protection philosophy based on information fusion is combined and is applied, it is achieved the distributed network protection of Coal Mine Power Network.Use GOOSE net
Pass analog quantity and switching value fault message mutually, GOOSE signal is participated in logical judgment, protective seletion as internal logic input
Higher with quick-action.Intelligent switch protection device, while supporting distributed network protection, also possesses in-situ protection function, if
Circuit generation communication failure, in-situ protection plays a role, excision fault promptly and accurately.By the protection device of intelligent switch,
Distributed network protection technology finally can effectively realize the reliability of colliery relay protection, quick-action, selectivity and sensitive
Property, solve bypass the immediate leadership tripping operation and earth fault non-selectivity problem common in Coal Mine Power Network.
Accompanying drawing explanation
Fig. 1 is technical scheme front view.
Fig. 2 is defencive function Remote configuration process schematic.
Fig. 3 is the Coal Mine Power Network method of operation and power direction schematic diagram.
Fig. 4 is distributed network route protection action logic figure.
Fig. 5 is distributed network bus protection action logic figure.
Fig. 6 is distributed network one-phase ground protection action logic figure.
Fig. 7 is distributed network one-phase ground protection algorithm flow chart.
Fig. 8 is the circuit longitudinal differential protection action logic figure of distributed network differential protection.
Fig. 9 is the transformer differential protection action logic figure of distributed network differential protection.
Detailed description of the invention
As it is shown in figure 1, distributed network protection scheme based on GOOSE of the present invention is built upon each distributed join
The protection device put by GOOSE network carry out information mutual on the basis of, each protection device supports IEC61850 agreement, right
Formula spaced apart configuration should be protected in each, access GOOSE+ sampled value SV network, obtain GOOSE signal and each interval in network
The sampled value such as voltage, electric current, exports GOOSE signal according to the relay protective scheme within protection device, it is achieved distributed network protection；
The novel relay protective scheme of this technical construction, will comprise the GOOSE signal of the information such as protection startup, circuit breaker lock, malfunctioning, tripping operation
Participate in logical judgment as internal logic input, by SCL configuration tool, novel protected logic is configured at distributed joining in advance
In the protection device put.Distributed network protection scheme based on GOOSE mainly includes that route protection, bus protection, ground connection are protected
Protect and differential protection.
As in figure 2 it is shown, control function according to the protection realized needed for protector, design corresponding relay protective scheme, will protect
Protect logic and generate configuration file by SCL configuration tool, the configuration file comprising corresponding relay protective scheme is remotely joined by SCL
The instrument of putting is configured in protector, and the input signals such as network G OOSE signal are processed and patrol according to relay protective scheme by protector
Collecting and judge, output corresponding protection GOOSE signal, it is achieved defencive function, SCL Remote configuration function can be implemented in dispatching terminal and will protect
In the unified each protection device being configured to scene of protective function.
As it is shown on figure 3, be the method for operation and the power direction schematic diagram of Coal Mine Power Network electric substation, main wiring mode is single
The bus section mode of connection, is divided into 35kV I section bus and 35kV II section bus, 3DL and 4DL is 35kV I section bus and II section
The lead-in circuit breaker of bus, during operation, bus 5DL is in a point position, and power direction is as shown by arrows.
As shown in Figure 4, distributed network route protection still uses overcurrent criterion principle, uses jump-value of current mode
Start, after protection starts, switch and startup information is sent to higher level's switch in GOOSE mode, receive subordinate's switch simultaneously and upload
GOOSE information, and carry out logical judgment, decide whether to trip, it is contemplated that subordinate's switch has malfunctioning possibility；Cause
This subordinate switch GOOSE signal packet includes route protection and starts GOOSE signal and subordinate's switch GOOSE malfunctioning jumping signal；Fault
Time, if switch activated GOOSE signal do not uploaded by subordinate's switch or subordinate's switch uploads malfunctioning switch connection and jumps GOOSE letter
Number, then this grade of switch trip, excise faulty line, unlike original logical judgment, the GOOSE signal of subordinate's switch is also made
Breakdown judge is carried out for logic input.As a example by there is K2 short trouble in Fig. 3, the electricity mutually that now feeder breaker 8DL flows through
After stream meets multiple press strip part more than overcurrent protection definite value and voltage, the protection device protection accessing GOOSE+ sampled value SV net is opened
Dynamic, startup information is sent to higher level's switching protective device by protection device with GOOSE message, after at the delay time of fixed value adjusting
In be then judged as line fault without receiving " start GOOSE signal " that any one switch of subordinate sends, time delay is certain
Trip after time；If malfunctioning switch, then superior switching protective device being uploaded malfunctioning switch GOOSE signal, malfunctioning GOOSE believes
Number participate in logical judgment, after time delay trip, disengagement failure circuit.
As it is shown in figure 5, distributed network bus protection is arranged in service entrance switch protection device, circuit is short-circuited fault
Time, inlet wire and feeder line intelligent switch all detect overcurrent, inlet wire and feeder line intelligent switch power directional element failure judgement position
In positive direction, therefore feeder line intelligent switch protection device can send to service entrance switch protection device that " bus protection does not start GOOSE
Signal "；During bus-bar fault, feeder line intelligent switch protection device then detects that fault is positioned at opposite direction, does not sends that " bus protection is not
Start GOOSE signal ", simultaneously, it is contemplated that subordinate's switch has malfunctioning possibility, is therefore also lost by GOOSE in bus protection logic
Spirit connection is jumped signal and is inputted as logic.In Fig. 3,35kV and following electric pressure power distribution network median generatrix the most do not install privacy protection,
Typically realized by transform er backup protection, as a example by there is K1 busbar short-circuit fault, the protection device inspection of service entrance switch 3DL
Measure overcurrent, and fault power direction is positioned at positive direction；The protection of each feeder line intelligent switch 6DL, 7DL, 8DL, 9DL and 10DL
Device then detects that power direction is positioned at opposite direction, does not sends " bus protection does not start GOOSE signal ", then jump after 3DL time delay
Lock；If 3DL malfunctioning switch, then malfunctioning GOOSE signal is uploaded to 1DL protection device, trips after switch 1DL time delay.
It is illustrated in figure 6 distributed network one-phase ground protection action logic figure, many letters can be realized in same switch
Breath, the ground protection of many criterions, one-phase ground protection is opened by all feeder line intelligent switch on same bus section, busbar section and inlet wire intelligence
Close and jointly complete, occur after earth fault, each intelligent switch protection device by GOOSE net share all branch roads analog quantity and
Switching value fault message, has independent ground protection algorithm in each intelligent switch protection device, whether this branch road of independent judgment
Break down, and decide whether that action is in tripping operation；The ground protection flow chart being illustrated in figure 7 in protection device, each
Way switch protection device obtains the sampled value SV message at this interval in GOOSE+ sampled value SV network, extracts residual voltage value, if
Exceed residual voltage value of adjusting, and judge it is not Xuhanting oral solution, then start ground protection program, by GOOSE+ sampled value SV
Network obtains this branch network zero-sequence current and residual voltage fault message, and collects the GOOSE fault message of other branch roads, logical
Cross ground protection algoritic module these information are processed, it is judged that faulty line, and finally send tripping operation and warning signal,
Tripping fault branch.As a example by the K3 fault of Fig. 3, the most each intelligent switch protection device shares all branch roads by GOOSE net
Analog quantity and switching value fault message, the protection device of switch 6DL, 7DL, 8DL, 9DL and 10DL is sampled this branch network zero
Sequence electric current and residual voltage fault message, and collect the GOOSE fault message of other branch roads, by ground protection algoritic module pair
These information process, it is judged that the line failure at switch 10DL place, switch 10DL tripping operation excision faulty line.
Being illustrated in figure 8 the circuit longitudinal differential protection action logic figure of distributed network differential protection, circuit longitudinal is poor
Dynamic protection has been coordinated by the intelligent switch at circuit two ends, and the longitudinal differential protection system of two ends intelligent switch protection device starts
After, detect power direction, it is judged that fault direction, and by switch activated GOOSE signal and the power direction flowing through switch
GOOSE signal is sent to circuit offside switch, and GOOSE signal is judged whether by each intelligent switch protection device as logic input
Need tripping operation.
It is illustrated in figure 9 the transformer differential protection action logic figure of distributed network differential protection, both sides intelligent switch
Protection device by GOOSE transmitting switch amount or analog quantity, after fault occurs, tranformer protection starts, and intelligent switch judges
Fault direction, if fault occurs outside district, low-pressure side intelligent switch sends the anti-jump signal of GOOSE to high side switch；If transformation
Device fault, low-pressure side intelligent switch does not the most send this signal.As a example by Fig. 3, transformator 1# is internal there is K5 fault, this time-varying
The protection device of switch 1DL and 3DL of depressor both sides has received fault message by GOOSE+ sampled value SV network, and according to
The power direction flowing through two switches judges that fault occurs in district on the contrary, then the protection device output tripping operation GOOSE of two switches
Signal makes to switch 1DL and 3DL tripping operation, is excised by transformator 1# from circuit.
Claims (6)
1. a Coal Mine Power Network distributed network protection method based on GOOSE, including distributed network route protection, distributed
Network bus protection, distributed network differential protection and distributed network ground protection, it is characterised in that construct based on
The relay protective scheme of GOOSE signal, using comprise protection startups, circuit breaker lock, malfunctioning, trip information GOOSE signal as inherence
Logic input participates in logical judgment, and relay protective scheme is configured at the protection device of decentralized configuration by SCL Remote configuration instrument
In；Protection device carries out information sharing by GOOSE network, at the relay protective scheme network G OOSE signal to input
Reason and logical judgment, output corresponding protection GOOSE signal, it is achieved distributed network protection function.
2. according to the Coal Mine Power Network distributed network protection method based on GOOSE described in claim 1, it is characterised in that: described
SCL Remote configuration instrument can carry out the remote of corresponding SCL equipment according to the different defencive function demand of each protection device
Journey configures, and is configured to from dispatching terminal unification by SCL Remote configuration instrument by the SCL configuration file comprising corresponding relay protective scheme
In on-the-spot protector, without configuring at the scene, and can at dispatching terminal according to its configuring condition to function application in real time
Update.
Coal Mine Power Network distributed network protection method based on GOOSE the most according to claim 1 and 2, it is characterised in that:
Described distributed network route protection is used for constructing distributed network route protection logic, at described distributed network protection
The information that starts in logic sends in GOOSE mode and switchs to higher level, receives the protection startup GOOSE letter that subordinate's switch is uploaded simultaneously
Number and GOOSE malfunctioning jumping signal, and carry out logical judgment, decide whether to trip.
Coal Mine Power Network distributed network protection method based on GOOSE the most according to claim 1 and 2, it is characterised in that:
Described distributed network bus protection is used for constructing distributed network bus protection logic, and bus protection is arranged in inlet wire intelligence
In switch, circuit be short-circuited fault time, inlet wire and feeder line intelligent switch all detect overcurrent, inlet wire and feeder line intelligence flame proof
Switch power directional element failure judgement is positioned at positive direction, therefore according to described distributed network bus protection logic, feeder line
Intelligent switch protection device can send bus protection to service entrance switch and not start GOOSE signal, and during bus-bar fault, feeder line intelligence is opened
Guan Ze detects that fault is positioned at opposite direction, does not send bus protection and does not start GOOSE signal, simultaneously, it is contemplated that subordinate's switch has
Malfunctioning possibility, therefore also inputs malfunctioning for GOOSE jumping signal as logic in bus protection logic.
Coal Mine Power Network distributed network protection method based on GOOSE the most according to claim 2, it is characterised in that: institute
The distributed network differential protection stated is divided into circuit longitudinal differential protection and transformer differential protection, and it is used for constructing circuit longitudinal
Differential protection logic and transformer differential protection logic, the wherein said circuit longitudinal differential protection intelligence by circuit two ends
Switch cooperation completes, according to described circuit longitudinal differential protection logic, after two ends intelligent switch longitudinal differential protection system starts, inspection
Power scale direction, it is judged that fault direction, and result is sent to circuit offside switch, each intelligent switch with GOOSE message form
GOOSE signal is judged whether to need tripping operation by protection device as logic input；Described transformer differential protection is also by two
Side intelligent switch has coordinated, and by GOOSE transmitting switch amount or analog quantity, after fault occurs, tranformer protection starts, intelligence
Switch failure judgement direction, if fault occurs outside district, low-pressure side intelligent switch protection device sends GOOSE to high side switch
Anti-jump signal, if transformer fault, low-pressure side intelligent switch protection device does not the most send this signal.
Coal Mine Power Network distributed network protection method based on GOOSE the most according to claim 1 and 2, it is characterised in that:
Described distributed network ground protection is used for constructing distributed network ground protection logic, connects according to described distributed network
Ground relay protective scheme, one-phase ground protection is the completeest by all feeder line intelligent switch on same bus section, busbar section and inlet wire intelligent switch
One-tenth, after there is earth fault, each intelligent switch protection device shares analog quantity and the switching value event of all branch roads by GOOSE net
Barrier information, has independent ground protection algorithm in each intelligent switch protection device, whether this branch road of independent judgment breaks down,
And decide whether that action is in tripping operation.
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Cited By (4)
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| CN108199484A (en) * | 2018-02-09 | 2018-06-22 | 广东电网有限责任公司揭阳供电局 | A kind of quick off-the-line method and device of looped network |
| CN108565974A (en) * | 2018-05-30 | 2018-09-21 | 广东电网有限责任公司 | One kind being based on the self-powered long-range failure protection method and system of protective device |
| CN109038522A (en) * | 2018-08-01 | 2018-12-18 | 国电南瑞南京控制系统有限公司 | A kind of series multistage supplying electricity and power distribution net current protection method based on GOOSE mechanism |
| CN112582987A (en) * | 2020-11-26 | 2021-03-30 | 长园深瑞继保自动化有限公司 | Intelligent distributed feeder fault judgment and positioning method for distribution network |
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| CN112582987A (en) * | 2020-11-26 | 2021-03-30 | 长园深瑞继保自动化有限公司 | Intelligent distributed feeder fault judgment and positioning method for distribution network |
| CN112582987B (en) * | 2020-11-26 | 2022-07-26 | 长园深瑞继保自动化有限公司 | Intelligent distributed feeder fault judgment and positioning method for distribution network |
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