CN106451422A - Simple 10kV distribution line load transfer risk assessment platform - Google Patents
Simple 10kV distribution line load transfer risk assessment platform Download PDFInfo
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- 238000012502 risk assessment Methods 0.000 title claims abstract description 34
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- 238000004519 manufacturing process Methods 0.000 abstract description 2
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Abstract
A simple 10kV distribution line load transfer risk assessment platform is provided. The platform obtains the relevant effective parameter information from systems, such as EMS, OMS, PMS, and power acquisition, by means of big data technology, determines a load transfer risk level through a risk assessment algorithm, provides a risk assessment human-computer interaction interface in an auxiliary production management system, and gives corresponding key operation and maintenance suggestions according to different risk levels in order to lead dispatchers at various levels to reasonably arrange abnormal operation, and reduces potential safety hazards such as line overload tripping, heavy overload and the like caused by unverified load transfer. The method of the invention is suitable for the risk assessment of the 10kV distribution line load and the key operation and maintenance after the transfer.
Description
Technical field
The present invention relates to a kind of easy 10kV distribution line load transfer risk assessment platform, belong to distribution O＆M technology pipe
Reason field.
Background technology
Operation of power networks state can be divided into normal operating mode, emergency operating mode and maintenance run, and 10kV is because of it certainly
Body characteristic, must face various catastrophic failures often, such as circuit breaking, urgent defect elimination, device damage etc., i.e. abnormal running mode
（Load）It is a kind of more universal phenomenon.But, most electric companies are in the scheme of falling load operation of establishment 10kV at present
When, do not consider relay protection, voltage levvl and regulating measures, the stabilization of power grids and security problems completely, and lack necessary school
Test platform, lead to circuit the factor Frequent trip such as to transfinite because of setting valve or CT capacity, expand power failure range, impact power supply reliable
Property and good service.
Therefore, it is necessary to be studied for drawbacks described above, one kind is provided can simply, quickly to identify load transfer risk
Evaluation Platform, and combine the corresponding O＆M emphasis of actual proposition.
Content of the invention
It is an object of the present invention to provide a kind of load transfer risk assessment verifies platform, accurate evaluation circuit turns and supplies risk
Grade, provides corresponding O＆M suggestion according to different brackets, reduces and cause because load transfer does not verify circuit overload to jump
Lock, the again potential safety hazard such as overload, temperature anomaly.
The technical scheme is that, using big data technology respectively from EMS（EMS）、OMS（Intelligent scheduling
Management system）、PMS（Production management system）, the system such as electricity consumption collection obtain related effective information, true by risk assessment algorithm
Constant load turns and supplies risk class, and provides risk assessment human-computer interaction interface producing aided management system, is easy to operate, and root
Provide corresponding emphasis operating maintenance suggestion according to different risk class, instruct dispatcher's reasonable arrangement abnormal running sides at different levels
Formula；Reduce and cause circuit overload tripping operation, weight overload hidden danger because load transfer does not verify.
Described risk assessment platform mainly includes argument section, algorithm part and three parts of human-computer interaction interface, and needs
Obtain supply network line chart, backbone line footpath, feeder switch CT no-load voltage ratio, switch contact point, branch line topology pass from PMS system
System, distribution line list of devices（Feeder line, branch line and distribution transforming are detailed）；From EMS/OMS system, obtain feeder switch and run electricity
Stream；From electricity consumption acquisition system, obtain platform area capacity and load condition（Become containing special）.
Described risk assessment platform specific implementation step is as follows：
（1）Confirm the associated circuit of transfer, proceed to from the extraction of PMS system and produce line powered network topological structure, feeder line
Switch CT nominal transformation ratio, backbone line footpath, determine exercisable contact point switch；
（2）Confirm the big Electricity customers electricity consumption situation of load type to be transferred, line load power, sudden load change；
（3）According to load transfering type, obtain different pieces of information；If completely shifting, consider according to transfer date situation, from
EMS system extracts the line load variation tendency of the circuit history peak load producing and proceeding to and nearly three days, checks and waits to proceed to
The setting valve of the related protection of feeder switch；If branch line transfer, should from extraction system obtain branch line belonging to current and nearly three days institutes
The total maximum load current of You Tai Qu, checks the setting valve of the related protection of feeder switch to be proceeded to；There is unusual fluctuation in Ruo Tai area and network
Topological diagram does not upgrade in time, can improve platform area load condition by the cumulative mode in platform area；
（4）According to ambient temperature, dynamically adjust circuit backbone limit current-carrying capacity to be proceeded to；
（5）The load of circuit to be produced is superimposed to and proceeds to circuit, check whether the running current after superposition meets service requirement,
By the current value after transfer is compared respectively with CT rated value, line energizing flow amount, protection seting value and result is orderly
Combination, draws risk class, specific as follows：
a）If after load transfer, the not super CT rated value of electric current, setting valve is reasonable, heavy duty will not occur, then be defined as average risk；
Meanwhile, should strengthen monitoring, note load variations situation；
b）If after load transfer, electric current reaches the 70%-85% of line footpath limit value, and not super CT rated value and setting valve, then be defined as
Serious risk；Meanwhile, should strengthen monitoring, note load variations situation, carry out the red of controller switching equipment, especially wire clamp or end
The gentle ordered electric of exterior measuring works, restricted part user power utilization if necessary；
c）Other are combined as critical risk, and the risk of transfer is larger, and very big possibility expands power failure area or burns out controller switching equipment,
Suggestion is not shifted；
（6）Show the result of calculation of the 5th step, and form the Risk Assessment Report of load transfer scheme.
The invention has the beneficial effects as follows, described platform need not increase in distribution network any hardware unit, algorithm simple,
Turn and use, greatly reduce equipment investment；The risk assessment platform of arrangement can be scheduling or operating maintenance personnel are changing fortune
During line mode, effective data supporting and transition strategy, dynamic adjustment is provided to turn for strategy and O＆M emphasis, improve risk meaning
Know, reduce the event such as overload tripping operation or device damage, improve power supply safety and reliability.
The inventive method is applied to the risk assessment before 10kV distribution line load mutually falls and the emphasis after transfer runs dimension
Repair work.
Brief description
Fig. 1 is 10kV distribution line load transfer risk assessment human-computer interaction interface；
Fig. 2 is 10kV distribution line load transfer risk assessment flow chart；
Fig. 3 is load current computing module；
Fig. 4 is risk evaluation module.
Specific embodiment
The present invention is using the existing effective information of big data technology mining, will be specified with CT for the line electricity flow valuve after transfer
Value, line energizing flow amount, protection seting value are compared respectively, and by result sequential combination, comprehensive descision risk assessment grade.
10kV distribution line load transfer risk assessment flow process is as shown in Figure 2.
Described risk assessment platform specific implementation step is as follows：
1st, confirm the associated circuit of transfer, from PMS system extract proceed to and produce line powered network topological structure, feeder line is opened
Close CT nominal transformation ratio, backbone line footpath, determine exercisable contact point switch.
2nd, confirm load type to be transferred（Completely, branch line）, line load power, the big Electricity customers of sudden load change（Specially
Become）Electricity consumption situation；Fig. 3 show load current computing module.
3rd, according to load transfering type, obtain different pieces of information.If completely shifting, consider according to transfer date feelings
Condition, extracts the line load variation tendency of the circuit history peak load producing and proceeding to and nearly three days, checks and treat from EMS system
Proceed to the setting valve of the related protection of feeder switch；If branch line transfer, should be current and nearly three belonging to branch line from being obtained with extraction system
Its total maximum load current of all of Qu, checks the setting valve of the related protection of feeder switch to be proceeded to；Ruo Tai area have unusual fluctuation and
Network topological diagram does not upgrade in time, can improve platform area load condition by the cumulative mode in platform area.
4th, according to ambient temperature, dynamically adjust circuit backbone limit current-carrying capacity to be proceeded to.
5th, the load of circuit to be produced is superimposed to and proceeds to circuit, check whether the running current after superposition meets operation and want
Ask, by being compared the current value after transfer respectively with CT rated value, line energizing flow amount, protection seting value, and by result
Sequential combination, draws risk class, as shown in Fig. 4 risk evaluation module, specific as follows：
a）If after load transfer, the not super CT rated value of electric current（Polytropic ratio, value should be current runtime value）, setting valve rationally, will not
There is heavy duty, be then defined as average risk（Green）.Meanwhile, should strengthen monitoring, note load variations situation.
b）If after load transfer, electric current reaches the 70%-85% of line footpath limit value, and not super CT rated value and setting valve, then fixed
Justice is serious risk（Yellow）.Meanwhile, should strengthen monitoring, note load variations situation, carry out controller switching equipment（Especially wire clamp or
Cable is first-class）Infrared measurement of temperature and ordered electric work, restricted part user power utilization if necessary, it is to avoid circuit overload trips.
c）Other are combined as critical risk（Red）, the risk of transfer is larger, very big may expand power failure area or burning
Bad controller switching equipment is not it is proposed that shift.
6th, show the result of calculation of the 5th step, provide risk assessment human-computer interaction interface producing aided management system, such as scheme
Shown in 1, and form the Risk Assessment Report of load transfer scheme.
Claims (6)
1. a kind of easy 10kV distribution line load transfer risk assessment platform is it is characterised in that described platform is using big
Data technique is adopted acquisition system and is obtained associated actual parameter information from EMS, OMS, PMS, electricity consumption respectively, is calculated by risk assessment
Method determines load transfer risk class, and provides risk assessment interface producing aided management system, and according to different risks etc.
Level provides the suggestion of corresponding emphasis operating maintenance to instruct dispatcher's reasonable arrangement abnormal running modes at different levels, reduce because
Load transfer does not verify and causes circuit overload tripping operation, weight overload hidden danger；
Described risk assessment platform specific implementation step is as follows：
（1）Confirm the associated circuit of transfer, proceed to from the extraction of PMS system and produce line powered network topological structure, feeder line
Switch CT nominal transformation ratio, backbone line footpath, determine exercisable contact point switch；
（2）Confirm the big Electricity customers electricity consumption situation of load type to be transferred, line load power, sudden load change；
（3）According to load transfering type, obtain different pieces of information；If completely shifting, consider according to transfer date situation, from
EMS system extracts the line load variation tendency of the circuit history peak load producing and proceeding to and nearly three days, checks and waits to proceed to
The setting valve of the related protection of feeder switch；If branch line transfer, should from extraction system obtain branch line belonging to current and nearly three days institutes
The total maximum load current of You Tai Qu, checks the setting valve of the related protection of feeder switch to be proceeded to；There is unusual fluctuation in Ruo Tai area and network
Topological diagram does not upgrade in time, can improve platform area load condition by the cumulative mode in platform area；
（4）According to ambient temperature, dynamically adjust circuit backbone limit current-carrying capacity to be proceeded to；
（5）The load of circuit to be produced is superimposed to and proceeds to circuit, check whether the running current after superposition meets service requirement,
By the current value after transfer is compared respectively with CT rated value, line energizing flow amount, protection seting value and result is orderly
Combination, draws risk class, specific as follows：
a）If after load transfer, the not super CT rated value of electric current, setting valve is reasonable, heavy duty will not occur, then be defined as average risk；
Meanwhile, should strengthen monitoring, note load variations situation；
b）If after load transfer, electric current reaches the 70%-85% of line footpath limit value, and not super CT rated value and setting valve, then be defined as
Serious risk；Meanwhile, should strengthen monitoring, note load variations situation, carry out the red of controller switching equipment, especially wire clamp or end
The gentle ordered electric of exterior measuring works, restricted part user power utilization if necessary；
c）Other are combined as critical risk, and the risk of transfer is larger, and very big possibility expands power failure area or burns out controller switching equipment,
Suggestion is not shifted；
（6）Show the result of calculation of the 5th step, and form the Risk Assessment Report of load transfer scheme.
2. according to claim 1 a kind of easy 10kV distribution line load transfer risk assessment platform it is characterised in that
Described platform includes argument section, algorithm part and human-computer interaction interface；Supply network line chart, master need to be obtained from PMS system
Main line line footpath, feeder switch CT no-load voltage ratio, switch contact point, branch line topological relation, distribution line list of devices；From EMS/OMS system
System, obtains feeder switch running current；From electricity consumption acquisition system, obtain platform area capacity and load condition.
3. according to claim 1 a kind of easy 10kV distribution line load transfer risk assessment platform it is characterised in that
Described risk class basis source in by transfer after line electricity flow valuve divide with CT rated value, line energizing flow amount, protection seting value
It is not compared, and by result sequential combination, comprehensive descision risk assessment and O＆M emphasis, form load transfer risk assessment report
Accuse.
4. according to claim 1 a kind of easy 10kV distribution line load transfer risk assessment platform it is characterised in that
Described load type to be transferred includes all fronts and branch line；Described big Electricity customers include specially becoming.
5. according to claim 1 a kind of easy 10kV distribution line load transfer risk assessment platform it is characterised in that
Described average risk is green；Serious risk is yellow；Critical risk is redness.
6. according to claim 1 a kind of easy 10kV distribution line load transfer risk assessment platform it is characterised in that
Described CT rated value, for polytropic ratio CT, rated value should be current runtime value.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107046283A (en) * | 2017-03-07 | 2017-08-15 | 温州电力设计有限公司 | A kind of full shifting method of transformer station's full cut-off |
| CN107507099A (en) * | 2017-07-07 | 2017-12-22 | 积成电子股份有限公司 | Power distribution network based on load transfer Information Matrix turns for training evaluation method |
| CN109030933A (en) * | 2018-08-30 | 2018-12-18 | 东方电子股份有限公司 | A method of the extraction current maxima based on feeder line group |
| CN109472429A (en) * | 2018-01-25 | 2019-03-15 | 国网浙江省电力公司湖州供电公司 | A kind of large user's load control system and regulation method based on sea news database |
| CN110224406A (en) * | 2019-05-21 | 2019-09-10 | 国网河南省电力公司荥阳市供电公司 | For increasing the method and device of electric power responsible consumer electricity consumption reliability in two lines road |
| CN110850199A (en) * | 2019-10-28 | 2020-02-28 | 国网福建省电力有限公司 | Power distribution network line heavy overload monitoring method |
| CN111268456A (en) * | 2020-02-25 | 2020-06-12 | 江海粮油（张家港）产业有限公司 | Real-time monitoring system of bag-packed ship machine |
| CN112234603A (en) * | 2020-09-08 | 2021-01-15 | 广东电网有限责任公司江门供电局 | Heavy overload checking method for open-loop power grid load transfer decision |
| CN112614008A (en) * | 2020-11-30 | 2021-04-06 | 国网北京市电力公司 | Load transfer processing method and device |
| CN113013855A (en) * | 2021-03-15 | 2021-06-22 | 国网河北省电力有限公司电力科学研究院 | Power distribution network fault recovery method and device and terminal equipment |
| CN114243697A (en) * | 2021-12-24 | 2022-03-25 | 国网上海市电力公司 | Intelligent load transfer method based on multi-source mutual check |
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| CN107507099B (en) * | 2017-07-07 | 2020-06-09 | 积成电子股份有限公司 | Power distribution network transfer training evaluation method based on load transfer information array |
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| CN109472429A (en) * | 2018-01-25 | 2019-03-15 | 国网浙江省电力公司湖州供电公司 | A kind of large user's load control system and regulation method based on sea news database |
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| CN110224406A (en) * | 2019-05-21 | 2019-09-10 | 国网河南省电力公司荥阳市供电公司 | For increasing the method and device of electric power responsible consumer electricity consumption reliability in two lines road |
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| CN111268456A (en) * | 2020-02-25 | 2020-06-12 | 江海粮油（张家港）产业有限公司 | Real-time monitoring system of bag-packed ship machine |
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| CN112614008A (en) * | 2020-11-30 | 2021-04-06 | 国网北京市电力公司 | Load transfer processing method and device |
| CN113013855A (en) * | 2021-03-15 | 2021-06-22 | 国网河北省电力有限公司电力科学研究院 | Power distribution network fault recovery method and device and terminal equipment |
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