CN113032448A - Power grid fault power failure range checking method - Google Patents
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Abstract
The invention provides a method for checking a power failure range of a power grid fault. The power grid fault power failure range checking method preliminarily judges whether the distribution transformer has a power failure condition or not according to current and voltage data of the operation of the distribution transformer, carries out real-time power failure calling on the distribution transformer governed by a feeder line, normally operates if the voltage and current operation data can be normally displayed, preliminarily considers that the distribution transformer is in a power failure or off-line state if the voltage and current operation data cannot be collected, and checks power failure information according to a power failure calling result. The invention combines a GIS topological structure, reduces the interference of abnormal data, improves the accurate determination of the fault power failure range, calls the measurement operation data by colleagues in real time, judges the power distribution operation condition, and carries out comprehensive analysis through the topological structure, thereby improving the speed of fault positioning.
Description
Technical Field
The invention relates to electric power, in particular to a power grid fault power failure range checking method.
Background
Along with the continuous expansion of the scale of the power grid in China, the construction investment of the power distribution network is continuously increased, the development of the power distribution network has obvious effect, and the power distribution network is influenced by various factors in the operation process, so that a plurality of problems occur, and the normal power supply and the power grid operation are influenced. Particularly, the accurate judgment of the fault power failure range of an epidemic situation and a major holiday power grid is very important for the quick repair of fault first-aid repair and the notification of customers affected by the fault.
In the development of social economy and continuous progress of science and technology in China, the demand of the power market is continuously expanded, according to the actual demand and the development current situation of power grid operation management, most provinces and cities in China start to introduce and use a geographic information system, and various operation metering devices are distributed at the tail end of a power grid. However, at present, most of dispatching management systems, distribution network production management systems, marketing service systems and metering monitoring systems are still in an independent construction stage, the application and popularization degree of a power distribution GIS is limited, relevant informationized data are not fully fused, the range of customers affected by fault power failure cannot be accurately positioned, and affected customers cannot obtain power failure information, so that a large amount of customer complaints are caused.
Disclosure of Invention
For the problems in the prior art, the invention provides a method for checking the power failure range of a power grid fault. In order to achieve the purpose of the invention, the technical scheme of the invention is as follows.
A power grid fault power failure range checking method comprises the following steps:
acquiring distribution transformer capacity information from a production system, acquiring relation information between a transformer and a low-voltage user from a marketing system, acquiring topological structure information from a geographical position system, and forming a file;
associating the positioning information of the feeder line with the formed file data;
cleaning the mismatching feeder data of the scheduling system and the GIS system, the mismatching feeder data of the production system and the GIS system, the mismatching distribution and transformation data of the production system and the marketing system, and the mismatching distribution and transformation data of the production system and the GIS system, and providing a non-compliance data list;
according to the current and voltage data of the distribution transformer operation, whether the distribution transformer has a power failure condition is preliminarily judged: the method comprises the steps that power failure and calling measurement are carried out on a distribution transformer governed by a feeder line in real time, if voltage and current operation data can be displayed normally, the operation is normal, and if data cannot be collected, the distribution transformer is preliminarily regarded as being in a power failure or off-line state;
and checking the power failure information according to the power failure calling result:
if only one distribution transformer under the feeder line has power failure, the power failure is regarded as the power failure of the distribution transformer;
if a plurality of distribution transformers have power failure under the feeder line and are all under the same branch line, the feeder line is regarded as the branch line fault power failure;
if different branch lines have power failure under the feeder line and at least one distribution transformer has power failure, the distribution transformer in the ring network state is regarded as effective operation;
and if the feeder line is not in the ring network and the distribution transformer with the preset proportion is in power failure, judging the distribution transformer which does not recall the detected running data according to the power failure.
Preferably, the running state of the power grid is displayed on the GIS system, the power grid is defaulted to be red under the condition of no power failure, and the power grid is displayed to be green under the condition of power failure; and displaying the area affected by the single fault range, and displaying the power failure users of the residents by combining distribution transformer fire point information.
Preferably, the distribution transformer information of the fault power failure range is obtained, the mobile phone number of the customer is obtained according to the relation between the power failure distribution transformer and the customer, and the fault tripping short message is sent.
Compared with the prior art, the invention has the beneficial technical effects that:
1. according to the invention, the scheduling monitoring range is expanded to the distribution transformer and the intelligent electric meter at the tail end of the distribution transformer, the data reasonability is fully analyzed on the basis of the actually measured data, the interference of abnormal data is reduced by combining a GIS topological structure, and the accurate determination of the fault power failure range is promoted.
2. According to the invention, the fault trip information of the dispatching line is acquired, the real-time recall and test of the metering operation data are carried out, the power distribution operation condition is judged, and the comprehensive analysis is carried out through the topological structure, so that the fault positioning speed is improved.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following description of the preferred embodiments clearly and completely describes the technical solutions of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments.
The method for checking the power failure range of the power grid in the embodiment comprises the following steps:
and (3) supporting a foundation: the access of relevant basic data is realized by acquiring information such as distribution transformer capacity and functional position ID from a production system, acquiring information such as the relation between a transformer and a low-voltage user and the functional position ID from a marketing system, acquiring information such as a topological structure and the functional position ID from a geographic position system, and performing primary clear and association on the data through the functional position ID to form a uniform file relation. The power grid topological structure is a structural diagram for showing the relation of a transformer substation, a feeder line, a distribution transformer and a user through an information system.
And (3) accurately checking the fault power failure range and actively sending client information estimation input source to schedule a feeder line which can be monitored by an automatic system as a data source. The part which cannot be monitored by the automatic system is accurately checked and positioned by the method.
And performing data association with the formed basic data file through the feeder line function position ID and associating with a GIS (geographic information System), and mainly cleaning the following data by taking a production system and the GIS as main parts and providing an out-of-compliance data list. The cleaning comprises the step of comparing the data through the GIS ID of the GIS geographic position system according to the existing data of each system, and enabling the data among the systems to be consistent through manual checking and/or system comparison.
a. Dispatching system and GIS system unmatched feeder data
b. Production system and GIS system unmatched feeder data
c. Mismatching distribution and transformation data of production system and marketing system
d. Mismatching distribution transformation data of production system and GIS system
The non-compliance data list comprises a list of GIS existence, scheduling existence, production existence, GIS nonexistence and production marketing existence, and is used for service confirmation.
Because measurement automation system mainly provides the support for marketing charges of electricity measurement, and the scale is big moreover, and data is great, need carry out preliminary judgement to data through marginal technique to data, according to the current-voltage data of distribution transformer operation, whether preliminary judgement distribution transformer has the power failure condition.
The method comprises the steps of further accurately measuring and monitoring the range of a trip circuit input by faults, reducing the power failure monitoring of a single circuit, and carrying out real-time power failure calling on distribution changes of the circuit, for example, according to the average number of certain power grid enterprises of about 100. If the operation data such as voltage, current and the like can be normally displayed, the operation is considered to be normal, and if the data cannot be collected, the distribution transformer is preliminarily considered to be in a power failure or off-line state.
According to the measurement real-time calling result, the power failure information is researched and judged by combining a power grid GIS topological structure, and the following conditions exist:
a. and if only one distribution transformer under the feeder line has power failure, the feeder line is regarded as a distribution transformer fault power failure.
b. If there are 2 or more distribution transformers with power failure under the feeder line, the branch line where the distribution transformer is located is researched and judged, and if the distribution transformer is located under the same branch line, the branch line is regarded as the power failure with the fault.
c. Under the condition that different branch lines have power failure under the feeder line, but not all distribution transformers have power failure, the branch lines where the operation distribution transformers are located are subjected to ring network analysis, and the distribution transformers in the ring network state are regarded as effective operation.
d. And the feeder line is not positioned in the ring network, 80% of the distribution transformer is in power failure, and the distribution transformer which does not recall the detected running data is judged according to the power failure.
The running state of the whole power grid is displayed on the power grid GIS according to the studying and judging result, the power grid is in red by default under the condition of no power failure, the power grid is displayed in green during power failure, and the effect of displaying power failure caused by multiple faults is achieved. And displaying the area affected by the single fault range, and displaying the residential power failure users by combining distribution transformer fire point information.
According to the research and judgment result, the distribution transformer information of the fault power failure range is automatically obtained, the mobile phone short message of the client is obtained according to the relation between the power failure distribution transformer and the client, the relevant information of fault tripping is sent, the client can be clearly informed of the current power failure state when the client carries out telephone consultation, and the client can be subsequently communicated with emergency maintenance to better serve the client.
This embodiment is to through the data fusion technique, combine current ripe system full play's the effect of data, the accurate check problem of distribution network trouble power failure scope has been solved with less cost, the integration use to the electric wire netting data has carried out the innovation, be favorable to the implementation of digital electric wire netting, realize "the many roadways of data, the distribution network operation management of personnel's less manual work", further reduced manual intervention, the location of salvageing of trouble and customer's quick service have been accelerated, very big improvement production efficiency, basic unit work burden has been reduced.
The above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (3)
1. A power grid fault power failure range checking method is characterized by comprising the following steps:
acquiring distribution transformer capacity information from a production system, acquiring relation information between a transformer and a low-voltage user from a marketing system, acquiring topological structure information from a geographical position system, and forming a file;
associating the positioning information of the feeder line with the formed file data;
cleaning the feeder data which are not matched with the GIS by the scheduling system, the feeder data which are not matched with the GIS by the production system, the distribution and transformation data which are not matched with the marketing system by the production system and the distribution and transformation data which are not matched with the GIS by the production system, and providing a non-compliant data list;
according to the current and voltage data of the distribution transformer operation, whether the distribution transformer has a power failure condition is preliminarily judged: the method comprises the steps that power failure and calling measurement are carried out on a distribution transformer governed by a feeder line in real time, if voltage and current operation data can be displayed normally, the operation is normal, and if data cannot be collected, the distribution transformer is preliminarily regarded as being in a power failure or off-line state;
and checking the power failure information according to the power failure calling result:
if only one distribution transformer under the feeder line has power failure, the power failure is regarded as the power failure of the distribution transformer;
if a plurality of distribution transformers have power failure under the feeder line and are all under the same branch line, the feeder line is regarded as the branch line fault power failure;
if different branch lines have power failure under the feeder line and at least one distribution transformer has power failure, the distribution transformer in the ring network state is regarded as effective operation;
and if the feeder line is not in the ring network and the distribution transformer with the preset proportion is in power failure, judging the distribution transformer which does not recall the detected running data according to the power failure.
2. The method for checking the power failure range of the power grid fault as claimed in claim 1, wherein the running state of the power grid is displayed on a GIS system, the power grid is red by default when the power grid is not in power failure, and the power grid is green when the power grid is in power failure; and displaying the area affected by the single fault range, and displaying the power failure users of the residents by combining distribution transformer fire point information.
3. The method for checking the power failure range of the power grid fault as claimed in claim 2, wherein the distribution transformer information of the power failure range of the fault is obtained, the mobile phone number of the customer is obtained according to the relation between the power failure distribution transformer and the customer, and the fault trip short message is sent.
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Cited By (3)
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| CN113256175A (en) * | 2021-07-05 | 2021-08-13 | 广东电网有限责任公司佛山供电局 | Automatic analysis method and system for data collection of distribution substation meter data |
| CN114019299A (en) * | 2021-09-29 | 2022-02-08 | 国家电网有限公司 | Special transformer user power failure information fault active study, judgment and reporting method and system |
| CN115061013A (en) * | 2022-08-17 | 2022-09-16 | 国网江西省电力有限公司电力科学研究院 | Low-voltage common fault studying and judging method and system based on power failure event big data analysis |
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Application publication date: 20210625 |