CN104820953A - Power distribution network operation safety assessment and warning system - Google Patents
Power distribution network operation safety assessment and warning system Download PDFInfo
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- CN104820953A CN104820953A CN201510255736.8A CN201510255736A CN104820953A CN 104820953 A CN104820953 A CN 104820953A CN 201510255736 A CN201510255736 A CN 201510255736A CN 104820953 A CN104820953 A CN 104820953A
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Abstract
The invention discloses a power distribution network operation safety assessment and warning system, which belongs to the field of power automation. Specific steps are as follows: firstly, original data of the power distribution network are acquired in real time, operation data of the power distribution network are inputted to a server for processing, and usable data capable of being analyzed and calculated are obtained to be stored in a database of the system; a data analysis module adopts a risk probability for risk assessment, low-voltage, overload and voltage instability risk indexes are calculated, and the operation state of the power distribution network system is described quantitatively; the system state is judged, and visualization technology is used for displaying the operation state of the system; early warning is constantly carried out on an emergency state, multiple warning means are adopted for notification and warning when necessary, an accident reason is displayed, and a person can carry out analysis and decision making on the power distribution network system conveniently. Risks of the operation state of the power distribution network can be analyzed, safety early warning assessment indexes are obtained, the operation state of the power distribution network system is analyzed quantitatively, early warning is carried out on risks of state changes, the operation state of the system is displayed visually, problems of low voltage, overload, voltage Instability and the like possibly appearing in the power distribution network are displayed more intuitively, warning is carried out in case of emergency, and decision making support is provided.
Description
Technical field
The present invention relates to field of electric power automation, specifically a kind of power distribution network security of operation assessment and warning system.
Background technology
Along with the progress of science and technology, for meeting growing electrical energy demands, there is many new change in the development of electric system.But be subject to the restriction of environment and construction cost, electric network composition is relatively weak, generating set storage level is less, under system often operates in heavy load conditions, these bring hidden danger all to the safe operation of electric system, and load or large-area power-cuts are lost in the local caused comprising spread of voltage or collapse of voltage.
The direct user oriented of power distribution network, any fault wherein, electrical energy power quality disturbance all can affect the normal power supply to user.In China, the event that power consumer is had a power failure has nearly 90% to be that low and medium voltage distribution network causes; Cause the principal element of power quality problem at also power distribution network.In the face of power distribution network power demands increase, connect increasing and the problem such as regenerative resource access of complexity, research and development intelligent distribution network of dashing forward becomes inevitable choice and the trend of power system development.
Modern society and expanding economy are had higher requirement to power supply quality in a word, for improving system cloud gray model quality, and the running status of moment monitoring distribution network system, and the demand for development that Forewarn evaluation is electrical network is carried out to system state.Energy management system just towards data collection cycle shorter future development, data volume increases day by day, and to interpersonal interactive interface and backup system function and ageing proposition new demand, and this requirement that develops into of visualization technique provides possibility.Therefore, the assessment of a kind of power distribution network security of operation and warning system show for the state of power distribution network, to detect and aid decision making is very necessary.
Summary of the invention
In view of this, technical matters to be solved by this invention is to provide the assessment of a kind of power distribution network security of operation and warning system.By analyzing the running status risk of power distribution network, obtain safe early warning evaluation index, the running status of quantitative test power distribution network, and early warning is made to the risk of state change, the running status of system is carried out visual presentation, thus the problems such as the low pressure that may occur in power distribution network, overload, Voltage Instability are shown more intuitively, and in case of emergency report to the police, decision support is provided.
The present invention is achieved through the following technical solutions, and concrete steps are as follows:
1) Real-time Obtaining electric system raw data;
2) raw data is input to server and carries out processing that obtain can the data of analytical calculation system state;
3) carry out risk assessment, adopt risk probability to calculate low-voltage, overload and Voltage Instability equivalent risk index, quantitative description operation states of electric power system;
4) running status of system is judged according to the index value calculated;
5) for the system state of different safety class, adopt different colors to be distinguished, adopt visualization technique to show
6) early warning is carried out to the accident that may occur, and show culprit, when system is in a state of emergency, adopt multiple warning means to carry out notifying and warning, remind personnel systems abnormal, process at once.
Further, step 1) described in the concrete steps of Real-time Obtaining electric system raw data as follows:
1-1) data processor of electric system sends electric network data in real time;
1-2) data interface module of native system receives electric network data in real time;
1-3) data at every turn received are preserved, preserve according to time name backup;
Further, step 2) described in raw data is input to server carry out processing obtain can the concrete steps of data of analytical calculation system state as follows:
2-1) raw data received is sent to the data processing module of server;
2-2) data processing module only extracts the related datas such as voltage, electric current, power, and stored in database;
2-3) choose busbar voltage amplitude, Line Flow number percent, system loading nargin number percent as the transportation load reflecting running status.
Further, step 3) described in carry out the concrete steps of risk assessment as follows:
Data 3-1) after reading process;
3-2) selected reference voltage grade and fault set;
3-3) based on risk assessment principle, adopt the overall low-voltage of risk probability rate computing system, overall system overload and system voltage unstability risk indicator, risk probability is calculated as follows:
x in formula
t,fthe predicted operation state of t, X
t,jthe system running state that t is possible, P (X
t,j| X
t,f) be the probability of i-th accident that t occurs, E
ii-th accident, P (E
i) be the probability of generation i-th accident, S (E
i, X
t,j) be the order of severity that i-th forecast accident occurs under a jth possible service condition;
3-4) the overall low-voltage of computing system, overload, Voltage Instability risk indicator, computing formula is:
wherein Rrisk is the risk indicator of i-th node, and m is the number of defects that forecast failure is concentrated;
3-5) preserve result of calculation and stored in database.
Further, step 4) judge the running status of system, for the system state of different safety class, adopt different colors to be distinguished, and draw visualized graphs, concrete steps are as follows:
4-1) corresponding security interval is defined to different risk indicators;
4-2) with order of severity function, the distance of each risk indicator to secure border is described;
If 4-3) three kinds of indexs are all in security interval, then running status corresponds to normal operating condition;
If 4-4) overall system low-voltage risk indicator or overload risk indicator are outside security interval, other indexs are within security interval, then running status is the state of alert;
If 4-5) overall system low-voltage risk indicator, overload risk indicator are positioned at outside security interval simultaneously, Voltage Instability risk indicator is in security interval, then running status is the emergency circumstance;
If 4-6) Voltage Instability risk indicator is outside security interval, then running status is collapse conditions;
4-7) result of safe class is delivered in visualization model show.
Further, step 5) adopt visualization technique display systems running status, concrete grammar is as follows:
5-1) establish scalable vector graphics Component Gallery in advance, comprise each assembly of electric system;
5-2) receiving step 4) in the assessment result of safe class, different colours is adopted to be distinguished different safe classes, and extract from Component Gallery and visually accordingly represent scheme, and shown by visualization model, provide system state intuitively.
Further, step 6) early warning and warning are carried out to the accident that may occur, concrete grammar is as follows:
6-1) when system is on the alert, system provides early warning by visualization model;
6-2) when system is in a state of emergency or collapse conditions time, visualization model provides alarm, and simultaneously alarm module adopts the onsite alarming modes such as jingle bell, reminds personnel systems abnormal, needs to process at once.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
A kind of power distribution network security of operation that Fig. 1 provides for the embodiment of the present invention is assessed and warning system process flow diagram;
A kind of power distribution network security of operation that Fig. 2 provides for the embodiment of the present invention is assessed and warning system Organization Chart.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
A kind of power distribution network security of operation that Fig. 1 provides for the embodiment of the present invention is assessed and warning system process flow diagram, a kind of power distribution network security of operation that Fig. 2 provides for the embodiment of the present invention is assessed and warning system Organization Chart, as shown in the figure: a kind of power distribution network security of operation assessment provided by the invention and warning system, comprise the following steps:
1) Real-time Obtaining electric system raw data;
2) raw data is input to server and carries out processing that obtain can the data of analytical calculation system state;
3) carry out risk assessment, adopt risk probability to calculate low-voltage, overload and Voltage Instability equivalent risk index, quantitative description operation states of electric power system;
4) running status of system is judged according to the index value calculated;
5) for the system state of different safety class, adopt different colors to be distinguished, adopt visualization technique to show, early warning is carried out to the accident that may occur, and shows culprit, aid decision making.
One) concrete steps of Real-time Obtaining electric system raw data are as follows:
1-1) data processor of electric system sends electric network data in real time;
1-2) data interface module of native system receives electric network data in real time;
1-3) data at every turn received are preserved, preserve according to time name backup;
Two) raw data is input to server carry out processing obtain can the concrete steps of data of analytical calculation system state as follows:
2-1) raw data received is sent to the data processing module of server;
2-2) data processing module only extracts the related datas such as voltage, electric current, power, and stored in database;
2-3) choose busbar voltage amplitude, Line Flow number percent, system loading nargin number percent as the transportation load reflecting running status.
Three) concrete steps of carrying out risk assessment are as follows:
Data 3-1) after reading process;
3-2) selected reference voltage grade and fault set;
3-3) based on risk assessment principle, adopt the overall low-voltage of risk probability rate computing system, overall system overload and system voltage unstability risk indicator, risk probability is calculated as follows:
x in formula
t,fthe predicted operation state of t, X
t,jthe system running state that t is possible, P (X
t,j| X
t,f) be the probability of i-th accident that t occurs, E
ii-th accident, P (E
i) be the probability of generation i-th accident, S (E
i, X
t,j) be the order of severity that i-th forecast accident occurs under a jth possible service condition;
3-4) the overall low-voltage of computing system, overload, Voltage Instability risk indicator, computing formula is:
wherein R
riskbe the risk indicator of i-th node, m is the number of defects that forecast failure is concentrated;
3-5) preserve result of calculation and stored in database.
Four) judge the running status of system, for the system state of different safety class, adopt different colors to be distinguished, and draw visualized graphs, concrete steps are as follows:
4-1) corresponding security interval is defined to different risk indicators;
4-2) with order of severity function, the distance of each risk indicator to secure border is described;
If 4-3) three kinds of indexs are all in security interval, then running status corresponds to normal operating condition;
If 4-4) overall system low-voltage risk indicator or overload risk indicator are outside security interval, other indexs are within security interval, then running status is the state of alert;
If 4-5) overall system low-voltage risk indicator, overload risk indicator are positioned at outside security interval simultaneously, Voltage Instability risk indicator is in security interval, then running status is the emergency circumstance;
If 4-6) Voltage Instability risk indicator is outside security interval, then running status is collapse conditions;
4-7) result of safe class is delivered in visual presentation module show.
Five) adopt visualization technique display systems running status, concrete grammar is as follows:
5-1) establish scalable vector graphics Component Gallery in advance, comprise each assembly of electric system;
5-2) receiving step 4) in the assessment result of safe class, different colours is adopted to be distinguished different safe classes, and extract from Component Gallery and visually accordingly represent scheme, and shown by visualization model, provide system state intuitively.
Six) carry out early warning and warning to the accident that may occur, concrete grammar is as follows:
6-1) when system is on the alert, system provides early warning by visualization model;
6-2) when system is in a state of emergency or collapse conditions time, visualization model provides alarm, and simultaneously alarm module adopts the onsite alarming modes such as jingle bell, reminds personnel systems abnormal, needs to process at once.
In sum, the present invention is in the operational process of electric system, by analyzing operation states of electric power system risk, obtain safe early warning evaluation index, the running status of quantitative test electric system, and early warning is made to the risk of state change, the running status of system is carried out visual presentation, thus the problem such as low pressure, overload, Voltage Instability that electric system may be occurred shows more intuitively, provides decision support.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. the assessment of power distribution network security of operation and a warning system, it is characterized in that, concrete steps are as follows:
Step one: the raw data of Real-time Obtaining distribution network system;
Step 2: raw data is input to server and carries out processing that obtain can the data of analytical calculation system state;
Step 3: carry out risk assessment, adopts risk probability to calculate low-voltage, overload and Voltage Instability equivalent risk index, quantitative description operation states of electric power system;
Step 4: the running status judging system according to the index value calculated;
Step 5: for the system state of different safety class, adopts different colors to be distinguished, and adopts visualization technique to show.
Step 6: carry out early warning to the accident that may occur, and show culprit, when system is in a state of emergency, adopts multiple warning means to carry out notifying and warning, and reminds personnel systems abnormal, processes at once.
2. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, it is characterized in that, the concrete steps of the distribution network system of Real-time Obtaining described in step one raw data are as follows:
1-1) data processor of distribution network system sends electric power data in real time;
1-2) data interface module of native system receives electric power data in real time;
1-3) data at every turn received are preserved, preserve according to time name backup.
3. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, is characterized in that, described in step 2, raw data is input to server carry out processing obtain can the concrete steps of data of analytical calculation system state as follows:
2-1) raw data received is sent to the data processing module of server;
2-2) data processing module only extracts the related datas such as voltage, electric current, power, and stored in database;
2-3) choose busbar voltage amplitude, Line Flow number percent, system loading nargin number percent as the transportation load reflecting running status.
4. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, it is characterized in that, the concrete steps of carrying out risk assessment described in step 3 are as follows:
Data 3-1) after reading process;
3-2) selected reference voltage grade and fault set;
3-3) based on risk assessment principle, adopt the overall low-voltage of risk probability rate computing system, overall system overload and system voltage unstability risk indicator, risk probability is calculated as follows:
x in formula
t,fthe predicted operation state of t, X
t,jthe system running state that t is possible, P (X
t,j| X
t,f) be the probability of i-th accident that t occurs, E
ii-th accident, P (E
i) be the probability of generation i-th accident, S (E
i, X
t,j) be the order of severity that i-th forecast accident occurs under a jth possible service condition;
3-4) the overall low-voltage of computing system, overload, Voltage Instability risk indicator, computing formula is:
wherein R
riskbe the risk indicator of i-th node, m is the number of defects that forecast failure is concentrated;
3-5) preserve result of calculation and stored in database.
5. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, is characterized in that, also include the running status that step 4 judges system, for the system state of different safety class, adopt different colors to be distinguished, and draw visualized graphs, concrete steps are as follows:
4-1) corresponding security interval is defined to different risk indicators;
4-2) with order of severity function, the distance of each risk indicator to secure border is described;
If 4-3) three kinds of indexs are all in security interval, then running status corresponds to normal operating condition;
If 4-4) overall system low-voltage risk indicator or overload risk indicator are outside security interval, other indexs are within security interval, then running status is the state of alert;
If 4-5) overall system low-voltage risk indicator, overload risk indicator are positioned at outside security interval simultaneously, Voltage Instability risk indicator is in security interval, then running status is the emergency circumstance;
If 4-6) Voltage Instability risk indicator is outside security interval, then running status is collapse conditions;
4-7) result of safe class is delivered in visualization model show.
6. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, is characterized in that, also include step 5 and adopt visualization technique display systems running status, concrete grammar is as follows:
5-1) establish scalable vector graphics Component Gallery in advance, comprise each assembly of electric system;
5-2) receiving step 4) in the assessment result of safe class, different colours is adopted to be distinguished different safe classes, and extract from Component Gallery and visually accordingly represent scheme, and shown by visualization model, provide system state intuitively.
7. a kind of power distribution network security of operation assessment as claimed in claim 1 and warning system, it is characterized in that, also include step 6 and carry out early warning and warning to the accident that may occur, concrete grammar is as follows:
6-1) when system is on the alert, system provides early warning by visualization model;
6-2) when system is in a state of emergency or collapse conditions time, visualization model provides alarm, and simultaneously alarm module adopts the onsite alarming modes such as jingle bell, reminds personnel systems abnormal, needs to process at once.
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| CN105894748A (en) * | 2016-05-10 | 2016-08-24 | 国网浙江省电力公司湖州供电公司 | Active power failure alarm equipment for distribution network |
| CN106483947A (en) * | 2016-09-21 | 2017-03-08 | 国网江苏省电力公司南通供电公司 | Distribution Running State assessment based on big data and method for early warning |
| CN106776940A (en) * | 2016-12-01 | 2017-05-31 | 中国电力科学研究院 | A kind of magnanimity battery data statistics look-up table building method and system |
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| CN110555573A (en) * | 2018-05-30 | 2019-12-10 | 中国电力科学研究院有限公司 | Distribution transformer burnout risk early warning method and system |
| CN110930015A (en) * | 2019-11-19 | 2020-03-27 | 广州供电局有限公司 | Method and system for preventing large-scale power distribution network accidents |
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| CN113570278A (en) * | 2021-08-09 | 2021-10-29 | 国网上海市电力公司 | Power distribution network risk early warning method based on Markov process |
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| CN115730749A (en) * | 2023-01-05 | 2023-03-03 | 佰聆数据股份有限公司 | Electric power dispatching risk early warning method and device based on fused electric power data |
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| CN105826920A (en) * | 2016-05-05 | 2016-08-03 | 国网安徽省电力公司芜湖供电公司 | Method for managing power supply line nodes |
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| CN106483947A (en) * | 2016-09-21 | 2017-03-08 | 国网江苏省电力公司南通供电公司 | Distribution Running State assessment based on big data and method for early warning |
| CN106776940A (en) * | 2016-12-01 | 2017-05-31 | 中国电力科学研究院 | A kind of magnanimity battery data statistics look-up table building method and system |
| CN108805427A (en) * | 2018-05-29 | 2018-11-13 | 深圳众厉电力科技有限公司 | A kind of distribution Running State Warning System based on big data |
| CN110555573A (en) * | 2018-05-30 | 2019-12-10 | 中国电力科学研究院有限公司 | Distribution transformer burnout risk early warning method and system |
| CN110930015A (en) * | 2019-11-19 | 2020-03-27 | 广州供电局有限公司 | Method and system for preventing large-scale power distribution network accidents |
| CN114572178A (en) * | 2020-11-30 | 2022-06-03 | 长城汽车股份有限公司 | Alarming method and system of vacuum boosting device and vehicle |
| CN114572178B (en) * | 2020-11-30 | 2023-12-01 | 长城汽车股份有限公司 | Alarm method and system of vacuum booster device and vehicle |
| CN113435787A (en) * | 2021-07-21 | 2021-09-24 | 北京融和友信科技股份有限公司 | Risk management index early warning method |
| CN113570278A (en) * | 2021-08-09 | 2021-10-29 | 国网上海市电力公司 | Power distribution network risk early warning method based on Markov process |
| CN113780890A (en) * | 2021-09-29 | 2021-12-10 | 深圳供电局有限公司 | Urban power grid operation risk calculation method and system |
| CN115730749A (en) * | 2023-01-05 | 2023-03-03 | 佰聆数据股份有限公司 | Electric power dispatching risk early warning method and device based on fused electric power data |
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