CN102290801A - Method and device for realizing fault isolation for distribution terminals - Google Patents
Method and device for realizing fault isolation for distribution terminals Download PDFInfo
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- CN102290801A CN102290801A CN2011102341702A CN201110234170A CN102290801A CN 102290801 A CN102290801 A CN 102290801A CN 2011102341702 A CN2011102341702 A CN 2011102341702A CN 201110234170 A CN201110234170 A CN 201110234170A CN 102290801 A CN102290801 A CN 102290801A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The invention discloses a method and a device for realizing fault isolation for distribution terminals. The method comprises the following steps of: S1, acquiring fault information of a corresponding-level distribution terminal, a preceding-level distribution terminal and a next-level distribution terminal in real time; S2, judging whether the corresponding-level distribution terminal belongs to backup protection, fault point front side or fault point back side according to the fault information; S3, if the judgment result is the backup protection, ending; S4, if the judgment result is the fault point front side, controlling switch break when determining that a distribution line has a permanent fault according to an enabled switch protection action, so as to realize quick fault isolation; and S5, if the judgment result is the fault point back side, directly controlling switch break at a preset time when determining that the distribution line has the permanent fault according to dynamic report information of the preceding-level distribution terminal. When the distribution line has a fault, all levels of distribution terminals communicate with one another, so that the quick selectivity of inner switches and outer switches in each section of line area and the harmony of the protection action are realized to isolate the fault quickly.
Description
Technical field
The present invention relates to the power distribution network communications field, relate in particular to the method and apparatus that a kind of distribution terminal is realized Fault Isolation.
Background technology
See also Fig. 1, Fig. 1 is the structural representation of distribution network automated Terminal communication system in the prior art of the present invention, as shown in Figure 1, this communication system comprises power distribution automation main website 1, at least one distribution terminal (21 that is connected with this power distribution automation main website 1 respectively, 22 ... 2N), and with at least one distribution terminal (21,22 ... at least one switch (31 that 2N) connects one to one, 32 ... 3N), wherein, communicate by optical fiber between power distribution automation main website and the distribution terminal, connect by the 10KV circuit between the switch, this switch comprises transformer station's gate out switch, the power distribution room on-load switch, switching station on-load switch and ring main unit on-load switch, in the prior art, be to be in series relationship between the front and back stages of each distribution terminal, just be in series relationship between each switch, because 10kV circuit distance is longer, duty ratio is bigger, when the 10kV line failure, fault current is very big, when especially this communication system comprises a plurality of switch, because for same fault current, switch need be set very long action delay, then the action delay of distribution terminal control switch is also very long, thereby the switch motion time is very slow when making fault, even the switch motion that also needs transformer station to export, like this cause the primary equipment on the circuit to grow heating burnout easily, even cause the large-area power-cuts of whole piece circuit because of bearing current time; Thereby can't realize the fast selective of the inside and outside switch in each section circuit zone and the harmony of protection action.
Summary of the invention
The technical problem to be solved in the present invention is; can't realize the defective of the fast selective of switch protection action inside and outside each section circuit zone at prior art, provide a kind of and can realize the selectivity of the inside and outside switch protection action in each section circuit zone and the method and apparatus of the realization Fault Isolation of the distribution terminal of isolated fault fast.
The technical solution adopted for the present invention to solve the technical problems is: construct the method that a kind of distribution terminal is realized Fault Isolation, this method is applied in the distribution line, described distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, said method comprising the steps of:
S1. gather the fault message of distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal in real time, described fault message comprises overcurrent information and short circuit information;
S2. judge that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side;
S3. if the result who judges is backup protection, then step finishes;
S4. if the result who judges be the front side, fault point, then the result who moves according to enabling switch protection judges whether distribution line is permanent fault, if control switch separating brake then is to realize quick isolated fault;
S5. if the result who judges is the fault point rear side, then determine according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information.
Realize in the method for Fault Isolation at distribution terminal of the present invention, further comprising the steps of before the described step S1:
S0. judge whether distribution line breaks down, if, execution in step S1 then, if not, then step finishes.
Realize that at distribution terminal of the present invention described step S4 specifically comprises in the method for Fault Isolation:
S41. if the result who judges is the front side, fault point, distribution terminal then at the corresponding levels is enabled the switch protection action;
S42. according to the result of enabling switch protection action, judge whether distribution line is permanent fault, if then execution in step S43a if not, then goes to step S43b;
S43a. distribution terminal control switch separating brake at the corresponding levels is realized quick isolated fault, and step finishes;
S43b. distribution terminal at the corresponding levels is in time notified back level distribution terminal, and step finishes.
Realize that at distribution terminal of the present invention described step S5 specifically comprises in the method for Fault Isolation:
S51. if the result who judges is the fault point rear side, receive the dynamic message information of prime distribution terminal;
S52. judge according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, if, execution in step S53 then, if not, then step finishes;
S53. direct control switch separating brake when Preset Time arrives.
Realize after described step S4 and described step S5, also comprising in the method for Fault Isolation at distribution terminal of the present invention:
S6. distribution terminal at the corresponding levels is in time with described fault information reporting distribution main website.
The present invention also constructs the device that a kind of distribution terminal is realized Fault Isolation, this device is applied in the distribution line, described distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, described device comprises acquisition module, judge module, first control module that connects successively and second control module that is connected with described judge module, wherein
Acquisition module is used for gathering in real time the fault message of distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, and described fault message comprises overcurrent information and short circuit information;
Judge module is used for judging that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side;
First control module, the result who is used for described judge module is the front side, fault point, then according to the result of enabling switch protection action, judges whether distribution line is permanent fault, if control switch separating brake then is to realize quick isolated fault;
Second control module, the result who is used for described judge module is the fault point rear side, then judge according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, if, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information.
Realize in the device of Fault Isolation that at distribution terminal of the present invention described device also comprises and is connected and is used to judge the malfunctioning module whether distribution line breaks down with described acquisition module.
Realize that at distribution terminal of the present invention in the device of Fault Isolation, described first control module specifically comprises switch element, first judging unit, first control unit that connects successively and the notification unit that is connected with described first judging unit, wherein,
Switch element is used for if the result who judges is the front side, fault point, and distribution terminal then at the corresponding levels is enabled the switch protection action;
First judging unit is used for the result according to the action of enabling switch protection, determines whether distribution line is permanent fault;
First control unit, the result who is used for described first judging unit distribution terminal control switch separating brake at the corresponding levels when being is realized quick isolated fault;
Notification unit, the result who is used for described first judging unit is that distribution terminal at the corresponding levels is in time notified back level distribution terminal when denying.
Realize that at distribution terminal of the present invention in the device of Fault Isolation, described second control module specifically comprises receiving element, second judging unit, second control unit that connects successively, wherein,
Receiving element is used for receiving the dynamic message information of prime distribution terminal if the result who judges is the fault point rear side;
Second judging unit is used for judging according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault;
Second control unit, be used for the result of described second judging unit when being when Preset Time arrives direct control switch separating brake.
Realize in the device of Fault Isolation that at distribution terminal of the present invention described device also comprises respectively the reporting module that is connected with described second control module with described first control module, wherein,
Reporting module is used for distribution terminal at the corresponding levels in time with described fault information reporting distribution main website.
Implement technical scheme of the present invention; has following beneficial effect: when distribution line breaks down; mutual communication between the distribution terminals at different levels, thus realize the fast selective of the inside and outside switch in each section circuit zone and the harmony of protection action, with quick isolated fault.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of distribution network automated Terminal communication system in the prior art of the present invention;
Fig. 2 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment one of Fault Isolation;
Fig. 3 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment two step S4 of Fault Isolation;
Fig. 4 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment three step S5 of Fault Isolation;
Fig. 5 is the structural representation that a kind of distribution terminal of the present invention is realized the device of Fault Isolation.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Should be noted that, in various embodiment of the present invention, distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, those skilled in the art should understand, the number of the distribution terminal on the distribution line can be N, wherein, N is the natural number greater than zero, does not repeat them here.
What deserves to be mentioned is, in various embodiment of the present invention, breaking down with the 10kV distribution line is that example is implemented technical scheme of the present invention, and other distribution line (for example 35Kv or the like) is suitable for this technical scheme equally, those skilled in the art should understand, and repeats no more here.
See also Fig. 2, Fig. 2 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment one of Fault Isolation, as shown in Figure 2, should be noted that, this method is applied in the 10kV distribution line, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, said method comprising the steps of:
In step S0, judge whether the 10kV distribution line breaks down, if, execution in step S1 then, if not, then step finishes.
In step S1, gather the fault message of distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal in real time, described fault message comprises overcurrent information and short circuit information, should be noted that this fault message also comprises the duration.
In step S2; judge that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side; should be noted that; in the present embodiment; with the over current fault is example; if distribution terminal at the corresponding levels detected stream information; when communicating with front and back level distribution terminal; at this moment if distribution terminal at the corresponding levels has big electric current to flow into; illustrate that then the prime distribution terminal detected stream information; if distribution terminal at the corresponding levels does not have big electric current to flow out, then explanation back level distribution terminal did not detect stream information.
In step S3, if the result who judges be backup protection, then step end should be noted that distribution terminal at the corresponding levels protects in support, is equivalent to a protective device, and those skilled in the art should understand, and repeats no more here.
In step S4, if the result who judges is the front side, fault point, then, judge whether the 10kV distribution line is permanent fault according to the result of enabling switch protection action, if, then the control switch separating brake to realize quick isolated fault, goes to step S6, should be noted that, the action of the protection here refers to distribution line when breaking down, and terminal at the corresponding levels is according to fault message, and control switch carries out the action of secondary reclosing; Action back fault also exists, and is defined as permanent fault, and distribution terminal control switch at the corresponding levels quickens tripping operation; Fault disappears after the secondary multiple action, is defined as transient fault, keeps power supply.Should be noted that the switch here refers to the primary equipment that the distribution line load is isolated, is example with the SF6 on-load switch, in order to isolate the load current on the 10kV distribution line.
In step S5, if the result who judges is the fault point rear side, then judge according to the dynamic message information of prime distribution terminal whether the 10kV distribution line is permanent fault, if, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information, execution in step S6 should be noted that in the present embodiment, this Preset Time can be provided with voluntarily according to user's demand, generally speaking, the scope of this default call duration time is [1000ms, 9000ms].
In step S6, distribution terminal at the corresponding levels should be noted that in time with described fault information reporting distribution main website the precondition of carrying out this step is that distribution terminal at the corresponding levels and distribution master station communication are normal.
See also Fig. 3, Fig. 3 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment two step S4 of Fault Isolation, and as shown in Figure 3, described step S4 specifically comprises:
In step S41, if the result who judges is the front side, fault point, distribution terminal then at the corresponding levels is enabled the protection action;
In step S42, the result according to the action of enabling switch protection judges whether the 10kV distribution line is permanent fault, if then execution in step S43a if not, then goes to step S43b;
In step S43a, distribution terminal control switch separating brake at the corresponding levels is realized quick isolated fault;
In step S43b, distribution terminal at the corresponding levels is in time notified back level distribution terminal, and step finishes.
See also Fig. 4, Fig. 4 is the flow chart that a kind of distribution terminal of the present invention is realized the method embodiment three step S5 of Fault Isolation, and as shown in Figure 4, described step S5 specifically comprises:
In step S51,, receive the dynamic message information of prime distribution terminal if the result who judges is the fault point rear side;
In step S52, judge according to the dynamic message information of prime distribution terminal whether the 10kV distribution line is permanent fault, if, execution in step S53 then, if not, then step finishes;
In step S53, direct control switch separating brake when Preset Time arrives.
See also Fig. 5, Fig. 5 is the structural representation that a kind of distribution terminal of the present invention is realized the device of Fault Isolation, as shown in Figure 5, should be noted that, this device is applied in the 10kV distribution line, described distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, described device comprises the malfunctioning module 1 that connects successively, acquisition module 2, judge module 3, first control module 4, and second control module 5 that is connected with described judge module 3, the reporting module 6 that is connected with described second control module 5 with described first control module 4 respectively, wherein, the described first control mould, 4 specifically comprise the switch element 41 that connects successively, first judging unit 42, first control unit 43, and the notification unit 44 that is connected with described first judging unit 42, described second control module 5 specifically comprises the receiving element 51 that connects successively, second judging unit 52, and second control unit 53, following mask body is introduced the effect of various piece:
Malfunctioning module 1 is used to judge whether the 10kV distribution line breaks down.
Judge module 3 is used for judging that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side.
First judging unit 42 is used for judging according to the result of enabling switch protection action whether the 10kV distribution line is permanent event.
Second control module 5, if the result who judges is the fault point rear side, then judge according to the dynamic message information of prime distribution terminal whether the 10kV distribution line is permanent fault, if, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information.
Receiving element 51 is used for receiving the dynamic message information of prime distribution terminal if the result who judges is the fault point rear side.
Second judging unit 52 is used for judging according to the dynamic message information of prime distribution terminal whether the 10kV distribution line is permanent fault.
Should be noted that compared to prior art, when distribution line breaks down, mutual communication between the distribution terminals at different levels, thus realize the fast selective of the inside and outside switch in each section circuit zone and the harmony of protection action, with quick isolated fault.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. a distribution terminal is realized the method for Fault Isolation, it is characterized in that, this method is applied in the distribution line, described distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, said method comprising the steps of:
S1. gather the fault message of distribution terminal at the corresponding levels, front end distribution terminal and back level distribution terminal in real time, described fault message comprises overcurrent information and short circuit information;
S2. judge that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side;
S3. if the result who judges is backup protection, then step finishes;
S4. if the result who judges be the front side, fault point, then the result who moves according to enabling switch protection judges whether distribution line is permanent fault, if control switch separating brake then is to realize quick isolated fault;
S5. if the result who judges is the fault point rear side, then judge according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, if, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information.
2. distribution terminal according to claim 1 is realized the method for Fault Isolation, it is characterized in that, and is further comprising the steps of before the described step S1:
S0. judge whether distribution line breaks down, if, execution in step S1 then, if not, then step finishes.
3. distribution terminal according to claim 2 is realized the method for Fault Isolation, it is characterized in that described step S4 specifically comprises:
S41. if the result who judges is the front side, fault point, distribution terminal then at the corresponding levels is enabled the switch protection action;
S42. according to the result of enabling switch protection action, judge whether distribution line is permanent fault, if then execution in step S43a if not, then goes to step S43b;
S43a. distribution terminal control switch separating brake at the corresponding levels is realized quick isolated fault, and step finishes;
S43b. distribution terminal at the corresponding levels is in time notified back level distribution terminal, and step finishes.
4. distribution terminal according to claim 2 is realized the method for Fault Isolation, it is characterized in that,
Described step S5 specifically comprises:
S51. if the result who judges is the fault point rear side, receive the dynamic message information of prime distribution terminal;
S52. judge according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, if, execution in step S53 then, if not, then step finishes;
S53. direct control switch separating brake when Preset Time arrives.
5. distribution terminal according to claim 2 is realized the method for Fault Isolation, it is characterized in that, also comprises after described step S4 and described step S5:
S6. distribution terminal at the corresponding levels is in time with described fault information reporting distribution main website.
6. a distribution terminal is realized the device of Fault Isolation, it is characterized in that, this device is applied in the distribution line, described distribution terminal comprises distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, distribution terminal at the corresponding levels establishes a communications link with prime distribution terminal and back level distribution terminal respectively, described device comprises acquisition module, judge module, first control module that connects successively and second control module that is connected with described judge module, wherein
Acquisition module is used for gathering in real time the fault message of distribution terminal at the corresponding levels, prime distribution terminal and back level distribution terminal, and described fault message comprises overcurrent information and short circuit information;
Judge module is used for judging that according to described fault message distribution terminal at the corresponding levels belongs to backup protection, the front side, fault point still is the fault point rear side;
First control module, the result who is used for described judge module is the front side, fault point, then according to the result of enabling switch protection action, judges whether distribution line is permanent fault, if control switch separating brake then is to realize quick isolated fault;
Second control module, the result who is used for described judge module is the fault point rear side, then judge according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault, if, direct control switch separating brake when Preset Time arrives then, wherein, described dynamic message information comprises fault message, switching information, line load information.
7. distribution terminal according to claim 6 is realized the device of Fault Isolation, it is characterized in that, described device also comprises and is connected and is used to judge the malfunctioning module whether distribution line breaks down with described acquisition module.
8. distribution terminal according to claim 7 is realized the device of Fault Isolation, it is characterized in that, described first control module specifically comprises switch element, first judging unit, first control unit that connects successively and the notification unit that is connected with described first judging unit, wherein
Switch element is used for if the result who judges is the front side, fault point, and distribution terminal then at the corresponding levels is enabled the switch protection action;
First judging unit is used for the result according to the action of enabling switch protection, judges whether distribution line is permanent fault;
First control unit, the result who is used for described first judging unit distribution terminal control switch separating brake at the corresponding levels when being is realized quick isolated fault;
Notification unit, the result who is used for described first judging unit is that distribution terminal at the corresponding levels is in time notified back level distribution terminal when denying.
9. distribution terminal according to claim 7 is realized the device of Fault Isolation, it is characterized in that, described second control module specifically comprises receiving element, second judging unit, second control unit that connects successively, wherein,
Receiving element is used for receiving the dynamic message information of prime distribution terminal if the result who judges is the fault point rear side;
Second judging unit is used for judging according to the dynamic message information of prime distribution terminal whether distribution line is permanent fault;
Second control unit, be used for the result of described second judging unit when being when Preset Time arrives direct control switch separating brake.
10. distribution terminal according to claim 7 is realized the device of Fault Isolation, it is characterized in that, described device also comprises respectively the reporting module that is connected with described second control module with described first control module, wherein,
Reporting module is used for distribution terminal at the corresponding levels in time with described fault information reporting distribution main website.
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| CN2011102341702A CN102290801A (en) | 2011-08-16 | 2011-08-16 | Method and device for realizing fault isolation for distribution terminals |
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| CN2011102341702A CN102290801A (en) | 2011-08-16 | 2011-08-16 | Method and device for realizing fault isolation for distribution terminals |
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Application publication date: 20111221 |