CN112398126A - Power distribution grid loss reduction and anti-theft operation and maintenance management method - Google Patents
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- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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Abstract
The invention provides a power distribution grid loss reduction and anti-theft operation and maintenance management method, which comprises the following steps of S01, constructing a distribution network grid management system, and specifically analyzing equipment indexes and operation indexes of each grid; step S02, establishing a self-adaptive protocol adapter system of the low-voltage power quality control equipment; step S03, establishing an electricity stealing inspection comprehensive application platform system to realize the cloud side end coordination control of the electric energy quality adjustable equipment in the power distribution grid; and step S04, determining the sequence of three-phase imbalance optimization, reactive power optimization and harmonic suppression and the voltage optimization independent operation mode so as to comprehensively optimize the power quality. The invention unitedly operates and maintains a plurality of control targets such as loss reduction of the power distribution network, electricity stealing inspection and the like, effectively ensures the safe and stable economic operation of the power distribution network, promotes the local economic development and effectively reduces the economic loss caused by the loss of the power distribution network and electricity stealing.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a loss reduction and anti-theft operation and maintenance management method for a power distribution grid.
Background
In recent years, with rapid economic development and social progress, the power consumption requirements and the power quality requirements of users in rural and interior regions are continuously improved, and the requirement for fine management development of a power distribution network is provided for power supply enterprises. However, the existing power distribution network has multiple points and wide range and large load capacity of a line, and on one hand, a series of problems of voltage, power factor, three-phase imbalance, harmonic waves and the like are increasingly prominent, the quality of electric energy is poor, and the loss of the electric energy is serious. The existing power quality treatment and loss reduction energy-saving technology and equipment lack systematicness and harmony, and cannot realize comprehensive treatment effect and maximum benefit.
On the other hand, the phenomenon of electricity stealing of the power distribution network is always a difficult point of management and prevention and control of network loss from both technical prevention and control and management system. With the increasing level of electricity stealing modes and techniques in recent years, the existing electricity stealing prevention method is difficult to achieve ideal effects, so that not only is the company suffer serious economic loss, but also the normal power supply order is seriously damaged, and even the safe and stable operation of a power grid is threatened.
Therefore, technical personnel in the field need to provide a power distribution grid loss reduction and anti-theft operation and maintenance management method, so that the overall cooperative optimization capability and the regulation response efficiency of different regulation and control devices are improved, the goal of optimizing the full index of the power quality of a distribution network is achieved, meanwhile, accurate judgment and accurate positioning of electricity stealing behaviors are realized, and the technical level of lean management of the operation and maintenance of the distribution network is improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for managing the loss reduction and the theft prevention of operation and maintenance of the power distribution grid is provided, the overall collaborative optimization capability and the regulation response efficiency of different regulation and control devices are improved, the goal of the full-index optimization of the power quality of the power distribution network is achieved, meanwhile, the accurate judgment and the accurate positioning of the electricity stealing behavior are realized, and the lean management technical level of the operation and maintenance of the power distribution network is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a loss reduction and anti-theft operation and maintenance management method for a power distribution grid, which comprises the following steps:
s01, constructing a distribution network gridding management system, and specifically analyzing each grid equipment index and each operation index;
step S02, establishing a self-adaptive protocol adapter system of the low-voltage power quality control equipment;
step S03, establishing an electricity stealing inspection comprehensive application platform system to realize the cloud side end coordination control of the electric energy quality adjustable equipment in the power distribution grid;
and step S04, determining the sequence of three-phase imbalance optimization, reactive power optimization and harmonic suppression and the voltage optimization independent operation mode so as to comprehensively optimize the power quality.
Preferably, in step S01, the constructing a distribution network grid management system specifically includes:
step S011, dividing a complex power distribution network into a plurality of relatively independent grids according to the actual conditions of the regional grid structure, load distribution, geographical boundaries and the like;
step S012, corresponding basic data of PMS, marketing system and the like to the district and the grid one by one, and establishing complete district and grid accounts;
and S013, specifically analyzing the equipment indexes and the operation indexes of each grid, and realizing dynamic management of the power utilization information of each grid.
Preferably, in step S02, the establishing of the adaptive protocol adapter system for the low-voltage power quality control device specifically includes:
s021, establishing a protocol library with an expandable structure, introducing a soft plug-in, and realizing protocol integration of different devices;
and S022, designing a plurality of expansion interfaces by the power quality regulation and control equipment protocol adapter to meet the requirement of single-point multi-equipment access.
Preferably, the expansion interface in step S022 includes optical fiber and RJ45, as well as carrier, micro power wireless, LORA, NB-IOT, and GPRS.
Preferably, in step S03, the comprehensive application platform system for comprehensive loss reduction assessment and analysis and electricity stealing inspection of the power distribution network specifically includes:
step S031, adopt the operation data acquisition unit of the split type distribution network, the electric energy regulates and controls the apparatus operation data information acquisition analysis to process;
and S032, increasing edge calculation levels by using an open edge calculation architecture, feeding back acquired information to the power grid power regulation and control equipment, and carrying out edge calculation and local control on data by the power grid power regulation and control equipment.
Preferably, in step S03, the establishing of the electricity stealing checking comprehensive application platform system includes using a user electricity stealing behavior analysis method, where the user electricity stealing behavior analysis method includes a decision tree, a neural network, a horizontal migration detection method, and a high-dimensional random matrix analysis method.
Preferably, in step S03, establishing the electricity stealing inspection comprehensive application platform system includes constructing an electricity stealing analysis model under a missing data set, so as to implement electricity utilization anomaly analysis and electricity stealing behavior prediction.
Preferably, in step S03, the power stealing analysis model under the missing data set first predicts the short-term load of the user based on a time series method, determines the basic characteristics and the change rules of the user by analyzing the change trend of the time series of the normal and abnormal daily power consumption of the user, and effectively smoothes the abnormal values and the missing values, and finally establishes the user load prediction model.
The invention provides a power distribution grid loss reduction and anti-theft operation and maintenance management method, which has the following advantages:
1. comprehensive coordination optimization control of power quality problems such as voltage, three-phase imbalance, reactive power, harmonic waves and the like is realized, accurate positioning of electricity stealing behavior detection and judgment is realized, power distribution network loss and economic loss caused by electricity stealing are effectively reduced, unnecessary power equipment investment is reduced, comprehensive cost of operation and maintenance management of a distribution network is reduced, and direct economic benefits are very outstanding;
2. the power stealing and line loss economic losses are reduced, the normal power supply order is maintained, the lean management technical level of operation and maintenance of the distribution network is improved, and meanwhile, the large data acquisition, interconnection and intercommunication and sharing level of the distribution network are facilitated to be improved;
3. the power distribution network management system has the advantages that unified operation and maintenance management is carried out on a plurality of treatment targets such as loss reduction and electricity stealing inspection of the power distribution network, the safe and stable economic operation of the power distribution network is powerfully guaranteed, and meanwhile, the local economic development is promoted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flow chart of a power distribution grid loss reduction and anti-theft operation and maintenance management method according to the present invention.
Detailed Description
In order to make the contents of the present invention more comprehensible, the present invention is further described below with reference to the accompanying drawings. The invention is of course not limited to this particular embodiment, and general alternatives known to those skilled in the art are also covered by the scope of the invention. The present invention is described in detail with reference to the drawings, and the drawings are not to be considered as limiting the invention, but are enlarged partially in accordance with the general scale for convenience of explanation.
The invention provides a power distribution grid loss reduction and anti-theft operation and maintenance management method, which comprises the following steps:
and S01, constructing a distribution network grid management system, and specifically analyzing the equipment indexes and the operation indexes of each grid.
The gridding management of the power distribution network is to divide a complex power distribution network into a plurality of relatively independent grids according to the actual conditions of the grid structure current situation, the load distribution, the geography boundary and the like of a region, correspond basic data such as a PMS (permanent magnet synchronous generator), a marketing system and the like to a district and a grid one by one, establish a complete district and grid account, specifically analyze equipment indexes and operation indexes of each grid, realize the dynamic and all-around management of power consumption information of each grid, have the advantages of fineness, accuracy and standardization, implement the operation and maintenance of the gridding distribution network, well solve the problems of unbalanced power supply, excessive load, energy conservation, loss reduction and electricity stealing prevention and control, and have very important significance for improving the scheduling flexibility, the power supply reliability and the lean management level of the power distribution network.
And step S02, establishing a self-adaptive protocol adapter system of the low-voltage power quality control equipment.
The self-adaptive protocol adapter system for the low-voltage power quality control equipment is established, firstly, a protocol library with an expandable structure is established, a soft plug-in design is introduced, integration of different equipment protocols is realized, firstly, plug and play of national network company manufacturers is met, and secondly, through the expansion design, access of more manufacturers and equipment is met. Secondly, the power quality regulation and control equipment protocol adapter is designed to be self-adaptive and combined to meet the requirement of single-point multi-equipment access, and the system construction and transformation cost is reduced; finally, the protocol adapter of the electric energy quality regulation and control equipment, which has stronger compatibility and more convenient configuration, is realized, and the data acquisition requirements of different types of regulation and control terminals are met.
The power quality regulation and control equipment protocol adapter is provided with a plurality of expansion interfaces so as to meet the requirement of single-point multi-equipment access. The expansion interface in step S022 includes optical fiber and RJ45, as well as carrier, micro-power wireless, LORA, NB-IOT, and GPRS.
And step S03, establishing an electricity stealing inspection comprehensive application platform system, and realizing the cloud side end coordination control of the electric energy quality adjustable equipment in the power distribution grid.
The method comprises the steps of establishing an electricity stealing inspection comprehensive application platform system, constructing an electricity stealing analysis model under a missing data set, and realizing electricity utilization abnormity analysis and electricity stealing behavior prediction. The power stealing analysis model under the missing data set firstly predicts the short-term load of the user based on a time series method, determines the basic characteristics and the change rule of the user through the change trend analysis of the normal and abnormal daily power consumption time series of the user, and effectively stabilizes the abnormal value and the missing value, and finally establishes the user load prediction model. Meanwhile, an active power matrix of each node of the whole network is constructed based on a covariance characteristic spectrum distribution diagram judging method, a high latitude random matrix is established, a power stealing analysis model under a missing data set is constructed, and power utilization abnormity analysis and power stealing behavior prediction are achieved.
The method comprises the steps of constructing an electricity stealing analysis model under a missing data set, wherein the electricity stealing analysis model comprises an index system which takes power, electric quantity and line loss as main monitoring indexes and takes user type attributes, weather, voltage, current, power factors and the like as correlation analysis objects, analyzing the change condition and trend of index data under the conditions of normal electricity utilization and abnormal electricity utilization by acquiring the index data, constructing a high-latitude user electricity utilization model, and integrating methods such as a decision tree, a neural network, horizontal migration detection and a high-latitude random matrix, so that reliable electricity stealing behavior identification and accurate positioning function are realized.
And step S04, determining the sequence of three-phase imbalance optimization, reactive power optimization and harmonic suppression and the voltage optimization independent operation mode so as to comprehensively optimize the power quality.
The invention determines the sequence control sequence of three-phase unbalance optimization, reactive power optimization and harmonic suppression and the voltage optimization independent operation mode. The comprehensive optimization of three-phase imbalance is realized, the independent optimization and regulation of voltage and the harmonic wave post-treatment are considered, and finally, the comprehensive targets of reactive compensation, voltage optimization and harmonic wave treatment are further solved on the basis of realizing the comprehensive optimization of the three-phase imbalance of the low-voltage power grid, so that the targets of comprehensive optimization of power quality and energy conservation and consumption reduction are finally achieved.
In conclusion, the comprehensive coordination optimization control of the power quality problems of voltage, three-phase imbalance, reactive power, harmonic waves and the like is realized, the accurate positioning of detection and judgment of the electricity stealing behavior is realized, the power distribution network loss and the economic loss caused by electricity stealing are effectively reduced, the unnecessary investment of power energy-saving and loss-reducing equipment is reduced, and the comprehensive cost of operation and maintenance management of the distribution network is reduced.
Reference in the specification to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments.
Claims (8)
1. A power distribution grid loss reduction and anti-theft operation and maintenance management method is characterized by comprising the following steps:
s01, constructing a distribution network gridding management system, and specifically analyzing each grid equipment index and each operation index;
step S02, establishing a self-adaptive protocol adapter system of the low-voltage power quality control equipment;
step S03, establishing an electricity stealing inspection comprehensive application platform system to realize the cloud side end coordination control of the electric energy quality adjustable equipment in the power distribution grid;
and step S04, determining the sequence of three-phase imbalance optimization, reactive power optimization and harmonic suppression and the voltage optimization independent operation mode so as to comprehensively optimize the power quality.
2. The method for loss reduction and theft-proof operation and maintenance management of the power distribution grid according to claim 1, wherein in the step S01, the step of constructing a distribution grid management system specifically includes:
step S011, dividing a complex power distribution network into a plurality of relatively independent grids according to the actual conditions of the regional grid structure, load distribution, geographical boundaries and the like;
step S012, corresponding basic data of PMS, marketing system and the like to the district and the grid one by one, and establishing complete district and grid accounts;
and S013, specifically analyzing the equipment indexes and the operation indexes of each grid, and realizing dynamic management of the power utilization information of each grid.
3. The power distribution grid loss reduction and theft prevention operation and maintenance management method according to claim 1, wherein in step S02, the establishing of the adaptive protocol adapter system for the low-voltage power quality control device specifically comprises:
s021, establishing a protocol library with an expandable structure, introducing a soft plug-in, and realizing protocol integration of different devices;
and S022, designing a plurality of expansion interfaces by the power quality regulation and control equipment protocol adapter to meet the requirement of single-point multi-equipment access.
4. The power distribution grid loss reduction and theft prevention operation and maintenance management method according to claim 3, wherein the expansion interfaces in step S022 comprise optical fiber and RJ45, and carrier, micro power radio, LORA, NB-IOT and GPRS.
5. The method as claimed in claim 3, wherein in step S03, the comprehensive application platform system for power distribution grid comprehensive loss reduction evaluation analysis and electricity stealing inspection specifically comprises:
step S031, adopt the operation data acquisition unit of the split type distribution network, the electric energy regulates and controls the apparatus operation data information acquisition analysis to process;
and S032, increasing edge calculation levels by using an open edge calculation architecture, feeding back acquired information to the power grid power regulation and control equipment, and carrying out edge calculation and local control on data by the power grid power regulation and control equipment.
6. The method as claimed in claim 1, wherein the step S03, the step of establishing an electricity-stealing inspection integrated application platform system includes using user electricity-stealing behavior analysis methods, which includes decision tree, neural network, horizontal migration detection method and high-dimensional random matrix analysis method.
7. The power distribution grid loss reduction and theft prevention operation and maintenance management method according to claim 1, wherein in step S03, establishing a theft inspection comprehensive application platform system includes constructing a missing data set electricity theft analysis model, and implementing electricity utilization anomaly analysis and electricity theft behavior prediction.
8. The power distribution grid loss reduction and theft prevention operation and maintenance management method according to claim 7, wherein in step S03, the power stealing analysis model under the missing data set first predicts the short-term load of the user based on the time series method, determines the basic characteristics and the change rules of the user through the analysis of the change trend of the time series of the normal and abnormal daily electricity consumption of the user, and effectively smoothes the abnormal values and the missing values, and finally establishes the user load prediction model.
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| CN112993988B (en) * | 2021-03-05 | 2022-10-11 | 国网河南省电力公司经济技术研究院 | Power grid line loss analysis method |
| CN113591334A (en) * | 2021-09-30 | 2021-11-02 | 深圳市景星天成科技有限公司 | Self-healing circuit feeder load rate improving algorithm based on power flow adjustment |
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