CN106597210B - Distribution network star-sky-map monitoring method based on SIM card state - Google Patents

Distribution network star-sky-map monitoring method based on SIM card state Download PDF

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Publication number
CN106597210B
CN106597210B CN201610862078.3A CN201610862078A CN106597210B CN 106597210 B CN106597210 B CN 106597210B CN 201610862078 A CN201610862078 A CN 201610862078A CN 106597210 B CN106597210 B CN 106597210B
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distribution
transformer
state
fault
power
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CN106597210A (en
Inventor
张陵
梁乃峰
崔立忠
陈进
梁珺
梁钢
张鲁安
苏峰
张英杰
赵普志
刘圣飞
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Bazhou Power Supply Company State Grid Xinjiang Electric Power Co
State Grid Xinjiang Electric Power Co
Beijing Kedong Electric Power Control System Co Ltd
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Bazhou Power Supply Company State Grid Xinjiang Electric Power Co
State Grid Xinjiang Electric Power Co
Beijing Kedong Electric Power Control System Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/086Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors

Abstract

The invention belongs to the field of power distribution network regulation and control, and particularly relates to a distribution network star atlas monitoring method based on an SIM card state. The method comprises the following steps: (1) a fault studying and judging method based on the distribution transformer state; (2) and (5) real-time monitoring of distribution transformer states based on star map display. The invention provides a distribution network star sky plot monitoring method based on the SIM card state, solves the problem of 'blind tuning', controls the live state of a distribution network in real time, and provides support for safety production and operation maintenance decision.

Description

Distribution network star-sky-map monitoring method based on SIM card state
Technical Field
The invention belongs to the field of power distribution network regulation and control, and particularly relates to a distribution network star atlas monitoring method based on an SIM card state.
Background
By 2 months in 2015, the national grid company has completed 86 (27%) land-level control mechanisms and 213 (15.90%) county-level control mechanisms for the construction of the distribution automation master station system. The power distribution automation achieves the long-term progress, and the automation level of a test point area is greatly improved. However, since the historical debt problem of the company power distribution network is prominent for a long time, the whole power distribution automation construction is in a lagging state, and the rapid development requirement of the current social economy is difficult to adapt. There are mainly the following problems: the system coverage rate of the main station of the power distribution system is low. The coverage rate of the automatic power distribution main station is low, and the improvement of the regulation and control level of the distribution network is severely restricted; the power distribution automation terminal coverage rate is low. The distribution automation terminal is installed a little, and can only provide a little operation information of distribution equipment, and the blind tuning problem is prominent; the operation condition of the distribution automation terminal is unstable. The power distribution terminal is unstable in operation and low in on-line rate, remote control success rate, remote control utilization rate and remote signaling accuracy, and the information accuracy of the automatic master station is seriously influenced under the influence of factors such as operation environment, communication channel and operation and maintenance strength; the automation level of basic application functions needs to be improved, and due to the limitation of conditions in aspects such as funds, communication modes, technical levels, system operation and maintenance, the communication quality of a power distribution network is relatively low, the accuracy and the effectiveness of real-time data cannot be completely guaranteed, the situations of signal false alarm, missing report and late report exist, the fault tolerance requirements on application functions such as feeder automation and the like are high, and the automatic execution function is limited; the practical level of the advanced application of the distribution automation main station system is required to be improved, the advanced application function is difficult to be verified and the function is improved in practical application due to the reasons of model quality, data lack and the like, and the operation support of the distribution network is insufficient.
The power distribution network is a key infrastructure of a city, is an important link for connecting a power grid and users, and has the basic characteristics of multiple points, long lines, wide area, complex structure, crossed management links and the like. For a long time, the supporting means of the power distribution network regulation and control management technology is relatively weak, and the power distribution network regulation and control work needs to be developed deeply along with the continuous deep development of the construction of a large operation system of a company, so that the power distribution network regulation and control management level is practically improved. With the construction of the intelligent power distribution network, the coverage of power distribution automation is completed in many places at present, and due to the limitation of the number of capital investment access terminals, partial fault information cannot be acquired in time under the condition of fault and power failure, so that the time for rush repair and recovery of the fault is delayed.
Disclosure of Invention
Aiming at the problems in the background art, the invention solves the problem of blind adjustment by using the distribution network star sky plot monitoring method based on the SIM card state, controls the live state of the distribution network in real time, and provides support for safe production and operation maintenance decision.
In order to achieve the purpose, the invention provides the following technical scheme:
a distribution network star sky graph monitoring method based on an SIM card state comprises the following steps:
(1) the fault studying and judging method based on the distribution transformer state specifically comprises the following steps:
according to the real-time state information of the distribution transformer, a topology tree model is combined, upstream fault equipment is positioned and judged through comprehensive analysis according to the principle that public becomes a main mode and special becomes an auxiliary mode, alarm information is sent, and after the fault is recovered, the state before the fault can be recovered;
(2) the distribution transformer state real-time monitoring method based on the star map display specifically comprises the following steps:
all feeders and the devices in the whole area are fused and simplified, other devices are stripped, only distribution transformation is reserved, and the transformer substation, the feeders and the transformer are connected through a topological relation to form a new power grid pattern, so that three-layer penetration of the transformer substation, the 10kV line and a user is realized.
Further, in the step (1), a specific flow of the distribution transform state-based fault studying and judging method is as follows:
1) forming a topology tree by the ring network equipment where the distribution transformer is located;
2) judging whether the fault event is a distribution transformer fault event;
3) if not, restoring the event for the distribution transformer; judging whether a distribution transformer upstream has a branch switch or not according to the event;
4) if not, ending; if the branch line is in the off state, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending the alarm;
5) in the step 2), when judging whether the distribution transformer fault event is the distribution transformer fault event, if so, continuing to carry out the following steps;
6) if yes, processing the branch line where the distribution transformer is located according to the principle that public becomes a main line and special becomes an auxiliary line;
7) judging whether the branch line loses power, if not, ending;
8) if yes, judging whether a distribution transformer upstream has a branch switch;
9) if yes, ending; if not, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending.
Further, in the step (2), on the basis of the step, a plurality of functional modules of a power-loss transformer list, transformer basic information, transformer corresponding alarm recording information and corresponding feeder line diagram are uniformly displayed in one interface to form a multi-theme window, each functional module can be displayed in a full screen mode, information linkage among the modules is achieved, and meanwhile, the power-loss distribution transformer is positioned in a star-sky diagram.
Further, in the step (2), on the basis of the step, the man-machine caches all the distribution transformers in the star atlas, and subscribes the state information of all the distribution transformers through the MIDMMI service; when the distribution and transformation state changes, the MIDMMI pushes the information to the man-machine, and the distribution and transformation state in the star-sky plot changes accordingly; when the distribution transformer loses power, positioning in the form of seismic waves, and starting a thread for positioning by each power loss distribution transformer; and when a plurality of distribution transformers lose power, starting multithreading to realize the simultaneous positioning of all power-losing distribution transformers.
The invention has the beneficial effects that: the invention provides a distribution network star sky plot monitoring method based on the SIM card state, which better solves the problem of blind tuning, controls the live state of a distribution network in real time and provides support for safe production and operation maintenance decision. Meanwhile, the emergency response capability, the service level and the lean management level of the operation of the power distribution network are improved, and the construction and popularization of a subsequent system are guided powerfully.
By monitoring the electrified state of the power distribution network by adopting the heartbeat state of the SIM card of the terminal, multi-source data sharing is realized, the problem of low coverage rate of the terminal of the power distribution network is solved, and powerful help is provided for a dispatcher to master the condition of the power distribution network in time, reasonably dispatch, quickly isolate faults and recover power supply.
The distribution transformer fault area and the influence range are analyzed by studying and judging the fault of the distribution transformer fault area, and auxiliary support is provided for safe production and fault first-aid repair. The early warning and the active first-aid repair of the fault are realized, the waiting time of a client is shortened, the enterprise image is improved, the client satisfaction degree is improved, the communication between the client and the enterprise becomes more convenient and faster, and the concept that the enterprise provides high-quality service for the client is reflected.
The traditional equipment state observation level can only be at a feeder line level, and the distribution transformer state real-time monitoring key technology based on star-sky plot display can improve the observation level to a region or even a whole network, so that the observation range and the magnitude of monitoring equipment are greatly improved.
Drawings
FIG. 1 is a flow chart of a fault diagnosis method based on distribution transformer status;
FIG. 2 is a diagram of a cable plant model architecture;
FIG. 3 is a cable plant model architecture diagram of a distribution transformer XFMR28 and XFMR30 fault;
FIG. 4 is a schematic diagram of a topology tree formed by ring network devices where distribution transformers are located according to distribution transformer fault information;
fig. 5 is a partial view of a starry sky.
Detailed Description
Abbreviations and key terms of the present invention are defined as follows:
SIM card: client Identification Module (Subscriber Identification Module). Also known as subscriber identification cards, smart cards.
Distribution and transformation: a distribution transformer is a static electric appliance which transforms AC voltage and current according to the law of electromagnetic induction in an electric distribution system to transmit AC energy.
A starry sky plot: the transformer substation, the feeder line and the distribution transformer are directly connected in a topological relation, so that three layers of penetration of the transformer substation, the 10kV line and a user is realized, and a new power grid graph, namely a star-sky-figure, is formed
The Internet of things card service access platform: the SIM card data information acquisition platform realizes the functions of real-time monitoring, data acquisition, storage, release and the like of the SIM card information.
MIDMMI: and the power system platform middle layer service provides a data subscription/publishing function.
The technical solution of the present invention is explained in detail below.
The invention provides a distribution network star map monitoring method based on an SIM card state, which comprises the following steps:
(1) fault studying and judging method based on distribution transformer state
According to the fault studying and judging method based on the distribution transformer state, according to the real-time state information of the distribution transformer, a topological tree model is combined, upstream fault equipment is positioned and judged through comprehensive analysis according to the principle that public becomes main and special becomes auxiliary, alarm information is sent, and after the fault is recovered, the state before the fault can be recovered. The core of distribution transformer fault analysis is that upstream and downstream topology analysis is carried out based on a topology analysis model established by current flow direction, power failure equipment is judged, fault location is finally completed, and comprehensive management of distribution network power failure events is realized.
As shown in fig. 1, the specific process of the distribution transformer state-based fault studying and judging method is as follows:
1) forming a topology tree by the ring network equipment where the distribution transformer is located;
2) judging whether the fault event is a distribution transformer fault event;
3) if not, judging whether a distribution transformer upstream has a branch switch or not;
4) if not, ending; if the branch line is in the off state, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending the alarm;
5) in the step 2), when judging whether the distribution transformer fault event is the distribution transformer fault event, if so, continuing to carry out the following steps;
6) if yes, processing the branch line where the distribution transformer is located according to the principle that public becomes a main line and special becomes an auxiliary line;
7) judging whether the branch line loses power, if not, ending;
8) if yes, judging whether a distribution transformer upstream has a branch switch;
9) if yes, ending; if not, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending.
The following illustrates a fault study and judgment method based on distribution transformation status, taking the cable line model of fig. 2 as an example. Should the mating XFMR28 and XFMR30 fail, as shown in fig. 3.
And establishing ring network equipment where the distribution transformer is located according to the distribution transformer fault information to form a topology tree, as shown in fig. 4.
According to the distribution transformer fault/recovery event and the topology tree model, the shared switch device A6 is searched for at the upstream of the distribution transformer XFMR28 and XFMR30, and the power loss condition of the A6 switch device is judged. During judgment, the principle of changing public into main and special into auxiliary is adopted:
if the public transformation under the A6 switch equipment does not meet the distribution and transformation loss of power of a certain proportion, the downstream fault of the A6 switch cannot be judged, and the reception of distribution and transformation loss/recovery information is continuously waited;
if the public transformer under the A6 switch equipment has distribution transformer power loss meeting a certain proportion, referring to whether the private transformer under the A6 switch has power loss, if so, judging the downstream fault of the A6 switch; if not, the downstream fault of the A6 switch cannot be judged, and the receiving of the power loss/recovery information of the distribution transformer is continuously waited;
if the common transformer under the A6 switch equipment has distribution transformer loss power exceeding a certain proportion, judging the downstream fault of the A6 switch;
and continuously searching the upstream switch equipment of the switch towards the bus direction, and continuously judging whether the downstream of the upstream switch equipment of the switch is in fault or not by the judgment logic.
And finding the switch information of the last non-incoming line switch as A6, updating the remote signaling value of the A6 switch of the real-time library, and sending branch line fault alarm information.
If the distribution transformer XFMR28 is recovered, according to the received distribution transformer recovery event and the topology tree model, whether the switch information which is updated before exists is searched for upstream (until the bus is searched) according to the distribution transformer information, if so, the remote signaling value of the switch in the real-time base is updated, and branch line recovery warning information is sent.
The distribution transformer fault area and the influence range are analyzed by studying and judging the fault of the distribution transformer fault area, and auxiliary support is provided for safe production and fault first-aid repair. The early warning and the active first-aid repair of the fault are realized, the waiting time of a client is shortened, the enterprise image is improved, the client satisfaction degree is improved, the communication between the client and the enterprise becomes more convenient and faster, and the concept that the enterprise provides high-quality service for the client is reflected.
(2) Distribution transformer state real-time monitoring based on star map display
Based on the distribution transformer state real-time monitoring key technology shown by a star-sky-map, all feeders and the equipment in the whole region are fused and simplified, other all equipment is stripped, only distribution transformers are reserved, a first transformer substation (A1), a second transformer substation (A2), a third transformer substation (A3), a fourth transformer substation (A4), a fifth transformer substation (A5), a sixth transformer substation (A6), a first feeder (B1), a second feeder (B2), a third feeder (B3), a fourth feeder (B4), a fifth feeder (B5), a sixth feeder (B6), a first transformer (C1), a second transformer (C2), a third transformer (C3), a fourth transformer (C4), a fifth transformer (C5) and a sixth transformer (C6) are connected through a topological relation, as shown in fig. 5, a new grid graph is formed, and three-layer penetration of a transformer substation, a 10kV line and a user is realized.
On the basis, a plurality of functional modules such as a power-off transformer list, transformer basic information, transformer corresponding alarm recording information and a corresponding feeder line diagram are uniformly displayed in one interface to form a multi-theme window, each functional module can be displayed in a full screen mode, information linkage among the modules is achieved, and meanwhile power-off distribution and transformation are located in a star-sky diagram. The traditional equipment state observation level can only be at a feeder line level, and the distribution transformer state real-time monitoring key technology based on star-sky plot display can improve the observation level to a region or even a whole network, so that the observation range and the magnitude of monitoring equipment are greatly improved.
In a traditional power grid pattern, a transformer substation, a feeder line and a distribution transformer need two patterns to be related. The transformer substation and feeder line association diagram belongs to the main network part, the feeder line and transformer association diagram belongs to the distribution network part, and the power loss of the transformer is only shown in the power loss color in the single line diagram, and particularly when the number of feeder line devices is large, the power loss and distribution are difficult to check. The star-sky-pattern associates the transformer substation, the 10kV line and the user in a topological relation in one pattern, so that three layers of penetration is realized, a new power grid pattern structure is formed, and the dependency relationship of the three is quite clear. And when the distribution transformer loses power, the browser can position the distribution transformer in the form of seismic waves and can observe the distribution transformer very intuitively.
And the man-machine caches all the distribution transformers in the star field diagram and subscribes the state information of all the distribution transformers through the MIDMMI service. When the distribution and transformation state changes, the MIDMMI pushes the information to the man-machine, and the distribution and transformation state in the star-sky plot changes accordingly. When the distribution transformer loses power, the positioning is carried out in the form of seismic waves, and each power-losing distribution transformer starts a thread to carry out positioning. And when a plurality of distribution transformers lose power, starting multithreading to realize the simultaneous positioning of all power-losing distribution transformers.
The distribution transformer state real-time monitoring key technology based on the star atlas display can improve the observation level from a feeder line to a region or even a whole network, greatly improves the observation range and the magnitude of monitoring equipment, helps customers to quickly know the distribution transformer state of the whole region, and masters the operation condition of a power grid of the whole region.

Claims (3)

1. A distribution network star sky plot monitoring method based on an SIM card state is characterized by comprising the following steps:
(1) the fault studying and judging method based on the distribution transformer state specifically comprises the following steps:
according to the real-time state information of the distribution transformer, a topology tree model is combined, upstream fault equipment is positioned and judged through comprehensive analysis according to the principle that public becomes a main mode and special becomes an auxiliary mode, alarm information is sent, and after the fault is recovered, the state before the fault can be recovered;
(2) the distribution transformer state real-time monitoring method based on the star map display specifically comprises the following steps:
all feeders and the devices in the whole area are fused and simplified, other devices are stripped, only distribution transformation is reserved, and the transformer substation, the feeders and the transformer are connected through a topological relation to form a new power grid pattern, so that three-layer penetration of the transformer substation, a 10kV line and a user is realized;
in the step (1), the specific process of the distribution transformer state-based fault studying and judging method is as follows:
1) forming a topology tree by the ring network equipment where the distribution transformer is located;
2) judging whether the fault event is a distribution transformer fault event;
3) if not, restoring the event for the distribution transformer; judging whether a distribution transformer upstream has a branch switch or not according to the event;
4) if not, ending; if the branch line is in the off state, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending the alarm;
5) in the step 2), when judging whether the distribution transformer fault event is the distribution transformer fault event, if so, continuing to carry out the following steps;
6) if yes, processing the branch line where the distribution transformer is located according to the principle that public becomes a main line and special becomes an auxiliary line;
7) judging whether the branch line loses power, if not, ending;
8) if yes, judging whether a distribution transformer upstream has a branch switch;
9) if yes, ending; if not, updating the remote signaling value of the upstream switch, and issuing a branch line power failure and restoration alarm and ending.
2. The distribution network starry sky diagram monitoring method based on the SIM card state as claimed in claim 1, wherein in step (2), on the basis of this step, a plurality of function modules of a power-off transformer list, transformer basic information, transformer corresponding alarm recording information and corresponding feeder line diagram are uniformly displayed in one interface to form a multi-theme window, each function module can be displayed in a full screen, information linkage among the modules is realized, and simultaneously, the positioning of power-off distribution transformation is performed in the starry sky diagram.
3. The distribution network starry sky plot monitoring method based on the SIM card state as claimed in claim 1, wherein in the step (2), on the basis of the step, the man-machine caches all the distribution transformers in the starry sky plot, and subscribes the state information of all the distribution transformers through MIDMMI service; when the distribution and transformation state changes, the MIDMMI pushes the information to the man-machine, and the distribution and transformation state in the star-sky plot changes accordingly; when the distribution transformer loses power, positioning in the form of seismic waves, and starting a thread for positioning by each power loss distribution transformer; and when a plurality of distribution transformers lose power, starting multithreading to realize the simultaneous positioning of all power-losing distribution transformers.
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CN102255391B (en) * 2011-07-29 2013-10-30 南京因泰莱配电自动化设备有限公司 Feeder automation system with on-line protective fixed value setting function
CN102707198B (en) * 2012-06-21 2014-11-19 国家电网公司 Feeder automation failure positioning method based on failure backcasting
CN103699688B (en) * 2014-01-10 2017-10-03 深圳供电局有限公司 A kind of terminal model of support terminal user's reliability management of power supply
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