CN104201675B - A kind of load of overload circuit is poured out and restoration methods automatically - Google Patents
A kind of load of overload circuit is poured out and restoration methods automatically Download PDFInfo
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- CN104201675B CN104201675B CN201410482188.8A CN201410482188A CN104201675B CN 104201675 B CN104201675 B CN 104201675B CN 201410482188 A CN201410482188 A CN 201410482188A CN 104201675 B CN104201675 B CN 104201675B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims description 5
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000001131 transforming effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Abstract
The load that the invention discloses a kind of overload circuit is poured out and restoration methods automatically, and it comprises the following steps: 1) obtain real-time distribution line parameter, periodically calculates the load factor of distribution line; 2) overload early-warning; 3) overload is poured out; 4) overload recovers.Distribution wire running status in fixed cycle monitoring system of the present invention, starts overload distribution wire early warning mechanism when monitoring distribution wire overload; When distribution wire overload, automatically the sub-load on overload distribution line can be poured out light-loaded circuit by interconnection switch, thus realize this circuit and normally run; After load is poured out, do not causing under circuit overload prerequisite, overload distribution wire load can returned to and pour out front supply power mode.Present invention achieves automatically pouring out of overload distribution wire load, ensure that the safety and economic operation of power equipment, extend power equipment service life, decrease the user's power outage because distribution wire overload causes.
Description
Technical field
The present invention relates to distribution network failure processing technology field, specifically a kind of load of overload circuit is poured out and restoration methods automatically.
Background technology
The GPF (General Protection False that distribution line uses mainly contains miniature circuit breaker, breaker of plastic casing, fuse; realize the overload of distribution line, ground protection; and some important loop; the circuit that the loss caused than overload as unexpected power-off of occasion such as fire-fighting, medical treatment, security protection facilities is larger, its overload protection should act on signal and should not act on cut-out circuit.As distribution line, to be that line current is excessive cause aging circuit to overladen reason, and insulation reduces, and causes electric shock and fire incident.
Distribution automation system can be carried out overload to distribution wire by the real time data that distribution network monitoring terminal is uploaded and monitor, current distribution automation main station system can only carry out the early warning of overload circuit according to distribution wire real-time current, can not realize automatically pouring out of overload distribution wire load.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, the load that the invention provides a kind of overload circuit is poured out and restoration methods automatically, and its load that can realize overload distribution line is poured out automatically, ensures the safe operation of power equipment.
The present invention solves the technical scheme that its technical problem takes: a kind of load of overload circuit is poured out and restoration methods automatically, it is characterized in that, comprises the following steps:
1) obtain real-time distribution line parameter, periodically calculate the load factor of distribution line;
2) overload early-warning;
3) overload is poured out;
4) overload recovers.
In said method, the cycle of described calculating distribution line load factor is 2 minutes.
In said method, described overload early-warning is exactly according to predefined distribution wire overload reference value, when monitoring distribution wire overload, generates the record in units of this distribution wire, and send early warning information at distribution main station system.
In said method, the step that described overload is poured out comprises the following steps;
31) determine that preparation turns supply source;
32) divide into groups between service area;
33) load between each service area is obtained;
34) determine to turn supply source and turn for interval;
35) generate load to pour out and interval pour out strategy;
36) perform and pour out strategy and carry out load and pour out.
In said method, describedly determine to prepare the step turning supply source and be exactly: obtain both sides on overload distribution wire by topological retrieval interval charged and be in point state of switch as interconnection switch, again according to the screening conditions turning supply source that user provides, select qualified interconnection switch as turning supply source.
In said method, in the described step to dividing into groups between service area, if without automation switch on circuit, using each interval of circuit as one interval group.
In said method, the step of the payload between each service area of described acquisition is exactly: the payload obtaining interval group according to the real-time current of automation switch, applies to install the payload that capacity pro rate obtains each interval further by interval with distribution transforming.
In said method, described determine to turn supply source and turn comprise following process for an interval step:
(1), using prepare turn supply source interconnection switch as starting point, carry out horizontal topological retrieval to mains side, interval for the interconnection switch mains side retrieved group and untreated interval group of this interval group load side poured out interval as this path initial stage;
(2), for when having many to turn for path, select to pour out minimum the turning for path as turning supply source of load in section, and interval for the mains side of retrieval group and load side interval thereof are organized the interval that comprises as this turn for pouring out interval under path;
(3), every bar turn for path pour into interval after synchronized update turn for routing information, continue to pour out interval group for routing information by turning after upgrading, until termination is retrieved when load searching route being poured out interval group adds up to be greater than the load that needs throw away.
In said method, described generation load is poured out and interval is poured out in the step of strategy, when not allowing looped network, first carries out pouring out interval power failure operation, then closes interconnection switch and carry out turning supply pouring out interval; When allowing looped network, first close interconnection switch, then the switch separately pouring out interval group mains side disconnects looped network.
In said method, the step that described overload recovers is exactly: when calculate this distribution wire current loads with poured out load in section cumulative be no more than distribution wire specified running current time, start accident recovery mechanism, return to system mode before overload.
The invention has the beneficial effects as follows,
1) distribution wire running status in periodicity monitoring system, starts overload distribution wire early warning mechanism when monitoring distribution wire overload;
2) when distribution wire overload, automatically the sub-load on overload distribution line can be poured out light-loaded circuit by interconnection switch, thus realize this circuit and normally run;
3) after load is poured out, do not causing under circuit overload prerequisite, overload distribution wire load can returned to and pour out front supply power mode.
Present invention achieves automatically pouring out of overload distribution wire load, ensure that the safety and economic operation of power equipment, extend power equipment service life, decrease the user's power outage because distribution wire overload causes.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is the main program flow chart of the method for the invention;
Fig. 2 is the flow chart that overload of the present invention is poured out;
Fig. 3 is the method flow diagram of the present invention one specific embodiment.
Embodiment
As shown in Figure 1, the load of a kind of overload circuit of the present invention is poured out and restoration methods automatically, and it comprises the following steps:
1) obtain real-time distribution line parameter, periodically calculate the load factor of distribution line, the cycle of described calculating distribution line load factor is 2 minutes.
2) overload early-warning, described overload early-warning is exactly according to predefined distribution wire overload reference value, when monitoring distribution wire overload, generates the record in units of this distribution wire, and send early warning information at distribution main station system.
3) overload is poured out.As shown in Figure 2, the step that described overload is poured out comprises the following steps;
31) determine that preparation turns supply source, describedly determine to prepare the step turning supply source and be exactly: obtain both sides on overload distribution wire by topological retrieval interval charged and be in point state of switch as interconnection switch, again according to the screening conditions turning supply source that user provides, select qualified interconnection switch as turning supply source;
32) divide into groups between service area, in the process of dividing into groups between to service area, if without automation switch on circuit, using each interval of circuit as one interval group;
33) load between each service area is obtained, the step of the load between each service area of described acquisition is exactly: the payload obtaining interval group according to the real-time current of automation switch, applies to install the payload that capacity pro rate obtains each interval further by interval with distribution transforming;
34) determine to turn supply source and turn for interval, describedly determine to turn supply source and turn to comprise following process for interval step:
(1), using prepare turn supply source interconnection switch as starting point, carry out horizontal topological retrieval to mains side, interval for the interconnection switch mains side retrieved group and untreated interval group of this interval group load side poured out interval as this path initial stage;
(2), for when having many to turn for path, select to pour out minimum the turning for path as turning supply source of load in section, and interval for the mains side of retrieval group and load side interval thereof are organized the interval that comprises as this turn for pouring out interval under path;
(3), every bar turn for path pour into interval after synchronized update turn for routing information, continue to pour out interval group for routing information by turning after upgrading, until termination is retrieved when load searching route being poured out interval group adds up to be greater than the load that needs throw away;
35) generate load to pour out and interval pour out strategy, described generation load is poured out and interval is poured out in the process of strategy, when not allowing looped network, first carries out pouring out interval power failure operation, then closes interconnection switch and carry out turning supply pouring out interval; When allowing looped network, first close interconnection switch, then the switch separately pouring out interval group mains side disconnects looped network;
36) perform and pour out strategy and carry out load and pour out.
4) overload recovers, and the step that described overload recovers is exactly: when calculate this distribution wire current loads with poured out load in section cumulative be no more than distribution wire specified running current time, start accident recovery mechanism, return to system mode before overload.
Fig. 3 is the method flow diagram of the present invention one specific embodiment.As shown in Figure 3, load of the present invention is automatically poured out and is comprised the following steps with restoration methods:
100, start.
101, obtain real-time distribution line parameter, and with 2 minutes for the cycle carries out the load factor calculating distribution line.
102, whether the load factor of distribution line is out-of-limit, if yes then enter step 103, otherwise proceeds to step 101.
103, generate the record in units of this overload distribution wire at distribution main station system, and send early warning information.
104, whether have charged by interval, both sides on topological retrieval overload distribution wire and be in the interconnection switch of point state, if had, entering step 105, otherwise proceed to step 125.
105, according to the screening conditions turning supply source that user provides, select qualified interconnection switch as turning supply source.
106, whether overload distribution wire there is automation switch, if had, enters step 107, otherwise proceed to step 108.
107, the interval group surrounded by automation switch between the service area on distribution wire is divided into different groups.
108, if without automation switch on circuit, using each interval of circuit as one interval group.
109, obtain the payload of interval group according to the real-time current of automation switch or apply to install with distribution transforming the load that capacity pro rate obtains each interval by interval.
110, whether there is effective interconnection switch, if yes then enter step 111, otherwise proceed to step 125.
111, preserve effective interconnection switch.
112, circuit is poured out load and whether is less than necessity and pours out load, and if yes then enter step 113, otherwise dress proceeds to step 120.
113, using interconnection switch mains side interval group take out as turn supply path pour out interval.
114, using interconnection switch mains side interval group load side untreated interval group take out as turn supply path pour out interval.
115, select to pour out minimum the turning for path as turning supply source of load in section, and interval for the mains side of retrieval group and load side interval thereof are organized the interval that comprises as this turn for pouring out interval under path.
116, whether there is many optional turn for path, if yes then enter step 117, otherwise proceed to step 118.
117, choose the large interconnection switch of the interval preparation power of distribution wire as turning supply source.
118, pour out mains side interval group and the interval group of mains side interval group load side.
119, synchronized update turns for routing information, continues to pour out interval group for routing information by turning after renewal.
120, preserve and turn for interval.
121, turning supply source and pour out interval according to what select, generating to pour out and pour out strategy between target area.122, automatically issue guidance command execution by main website and pour out strategy, the load carrying out overload distribution wire is poured out.
123, carry out the load factor periodically calculating distribution line, this overload distribution wire current loads with to have poured out the cumulative of load in section and whether be less than the specified running current of distribution wire, if it is proceed to step 124, otherwise continue the load factor periodically calculating distribution line.
124, generate and perform overload recovery policy, carrying out overload recovery, namely returning to system mode before overload.
Claims (9)
1. the load of overload circuit is poured out and a restoration methods automatically, it is characterized in that, comprises the following steps:
1) obtain real-time distribution line parameter, periodically calculate the load factor of distribution line;
2) overload early-warning;
3) overload is poured out;
4) overload recovers;
The step that described overload is poured out comprises the following steps;
31) determine that preparation turns supply source;
32) divide into groups between service area;
33) load between each service area is obtained;
34) determine to turn supply source and turn for interval;
35) generate load to pour out and interval pour out strategy;
36) perform and pour out strategy and carry out load and pour out.
2. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, the cycle of described calculating distribution line load factor is 2 minutes.
3. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, described overload early-warning is exactly according to predefined distribution wire overload reference value, when monitoring distribution wire overload, generate the record in units of this distribution wire at distribution main station system, and send early warning information.
4. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, describedly determine to prepare the step turning supply source and be exactly: obtain both sides on overload distribution wire by topological retrieval interval charged and be in point state of switch as interconnection switch, again according to the screening conditions turning supply source that user provides, select qualified interconnection switch as turning supply source.
5. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, in the described step to dividing into groups between service area, if without automation switch on circuit, using each interval of circuit as one interval group.
6. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, the step of the payload between each service area of described acquisition is exactly: the payload obtaining interval group according to the real-time current of automation switch, applies to install the payload that capacity pro rate obtains each interval further by interval with distribution transforming.
7. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, described determine to turn supply source and turn comprise following process for an interval step:
(1), using prepare turn supply source interconnection switch as starting point, carry out horizontal topological retrieval to mains side, interval for the interconnection switch mains side retrieved group and this interval group load side untreated interval group poured out interval as what turn to supply the path initial stage;
(2), for when having many to turn for path, select to pour out minimum the turning for path as turning supply source of load in section, and interval for the mains side of retrieval group and load side interval thereof are organized the interval that comprises as this turn for pouring out interval under path;
(3), every bar turn for path pour into interval after synchronized update turn for routing information, continue to pour out interval group for routing information by turning after upgrading, until termination is retrieved when load searching route being poured out interval group adds up to be greater than the load that needs throw away.
8. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, described generation load is poured out and interval is poured out in the step of strategy, when not allowing looped network, first carry out pouring out interval power failure operation, then close interconnection switch and carry out turning supply pouring out interval; When allowing looped network, first close interconnection switch, then the switch separately pouring out interval group mains side disconnects looped network.
9. the load of a kind of overload circuit according to claim 1 is poured out and restoration methods automatically, it is characterized in that, the step that described overload recovers is exactly: when calculate this distribution wire current loads with poured out load in section cumulative be no more than distribution wire specified running current time, start accident recovery mechanism, return to system mode before overload.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410482188.8A CN104201675B (en) | 2014-09-19 | 2014-09-19 | A kind of load of overload circuit is poured out and restoration methods automatically |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410482188.8A CN104201675B (en) | 2014-09-19 | 2014-09-19 | A kind of load of overload circuit is poured out and restoration methods automatically |
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| CN104201675A CN104201675A (en) | 2014-12-10 |
| CN104201675B true CN104201675B (en) | 2016-04-27 |
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| CN104753063A (en) * | 2015-04-22 | 2015-07-01 | 国家电网公司 | Transformer substation bus load transferring method and system |
| CN108808675B (en) * | 2018-07-13 | 2021-04-02 | 广东电网有限责任公司 | Automatic generation method for power supply conversion scheme of voltage-loss distribution network of transformer substation |
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| CN101964526A (en) * | 2010-08-13 | 2011-02-02 | 北京交通大学 | Electric network recovery and reconstruction method for underpowered network |
| CN102882213A (en) * | 2012-05-14 | 2013-01-16 | 广东电网公司茂名供电局 | Online load transfer method in power grid series connection and ring network power supply mode based on event management system (EMS) |
| CN102916431A (en) * | 2012-09-20 | 2013-02-06 | 中国电力科学研究院 | Assisted decision making method for load transfer in regional power grid |
-
2014
- 2014-09-19 CN CN201410482188.8A patent/CN104201675B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964526A (en) * | 2010-08-13 | 2011-02-02 | 北京交通大学 | Electric network recovery and reconstruction method for underpowered network |
| CN102882213A (en) * | 2012-05-14 | 2013-01-16 | 广东电网公司茂名供电局 | Online load transfer method in power grid series connection and ring network power supply mode based on event management system (EMS) |
| CN102916431A (en) * | 2012-09-20 | 2013-02-06 | 中国电力科学研究院 | Assisted decision making method for load transfer in regional power grid |
Non-Patent Citations (1)
| Title |
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| 基于层次分析法的配电网运行方式多目标优化;翁嘉明等;《电力系统自动化》;20120225;第36卷(第4期);56-61 * |
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