CN110618616A - Environmental safety monitoring system of transformer substation - Google Patents

Environmental safety monitoring system of transformer substation Download PDF

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Publication number
CN110618616A
CN110618616A CN201910901815.XA CN201910901815A CN110618616A CN 110618616 A CN110618616 A CN 110618616A CN 201910901815 A CN201910901815 A CN 201910901815A CN 110618616 A CN110618616 A CN 110618616A
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China
Prior art keywords
environment
sensor
sensor node
node
transformer substation
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CN201910901815.XA
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Chinese (zh)
Inventor
张朝阳
周歧斌
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201910901815.XA priority Critical patent/CN110618616A/en
Publication of CN110618616A publication Critical patent/CN110618616A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers

Abstract

The invention provides a transformer substation environment safety monitoring system which comprises an environment monitoring module, a server, an environment adjusting module and a control module, wherein the environment monitoring module is used for detecting environment sensing data of a transformer substation and transmitting the environment sensing data to the server; the server sends a control instruction to the control module according to the environment perception data, and the control module is connected with the environment adjusting module and used for controlling the environment adjusting module to adjust the environment of the transformer substation according to the control instruction. The intelligent monitoring system realizes intelligent monitoring of the environment of the transformer substation, can send a control instruction to the control module through the server when environment abnormal information is detected, realizes automatic adjustment of the environment, has high intelligence and saves manpower.

Description

Environmental safety monitoring system of transformer substation
Technical Field
The invention relates to the technical field of intelligent monitoring, in particular to a transformer substation environment safety monitoring system.
Background
The environment of the substation needs to be monitored because damage or safety accidents of substation equipment may occur due to high temperature or humid environment. The environment detection is carried out on the transformer substation through the environment detection sensor arranged on the transformer substation in the prior art, when the abnormal environment information is detected, the environment of the transformer substation is adjusted through manually controlling corresponding equipment, and the mode is not intelligent and wastes manpower.
Disclosure of Invention
Aiming at the problems, the invention provides a transformer substation environment safety monitoring system.
The purpose of the invention is realized by adopting the following technical scheme:
a transformer substation environment safety monitoring system comprises an environment monitoring module, a server, an environment adjusting module and a control module, wherein the environment monitoring module is used for detecting environment sensing data of a transformer substation and transmitting the environment sensing data to the server; the server sends a control instruction to the control module according to the environment perception data, and the control module is connected with the environment adjusting module and used for controlling the environment adjusting module to adjust the environment of the transformer substation according to the control instruction.
In one implementation, the environment adjusting module includes a dehumidifying device for dehumidifying the environment of the transformer substation, an air conditioner for adjusting the temperature of the environment of the transformer substation, and a drainage device for draining accumulated water in the transformer substation.
In one implementation, the server includes a storage server for storing the environment-aware data and a processor for performing anomaly analysis on the environment-aware data.
In one implementation, the wireless sensor network comprises sensor nodes and sink nodes deployed in a substation environment monitoring area; the sensor nodes are used for collecting environment perception data, and the sink nodes upload the fused environment perception data to the server after collecting and fusing the environment perception data of the sensor nodes.
In an implementation mode, a plurality of sensor nodes are selected in each sensor node in advance as cluster heads, when a network is initialized, each cluster head broadcasts a message to the sensor nodes in a communication range, and the sensor nodes determine cluster heads with the closest distance to join a cluster according to the broadcast message; if the distance between the sensor node and the corresponding cluster head is smaller than a preset distance threshold value, the sensor node directly establishes communication with the corresponding cluster head, and if the distance between the sensor node and the corresponding cluster head is not smaller than the preset distance threshold value, the sensor node selects another sensor node as a relay node in the cluster where the sensor node is located and establishes communication with the relay node.
In one implementation manner, the cluster head records time information of receiving environment perception data transmitted by a sensor node which establishes communication with the cluster head, and periodically detects the abnormality of the sensor node which establishes communication with the cluster head according to the time information, and does not receive the environment perception data transmitted by the sensor node of which the detection result is abnormal.
The invention has the beneficial effects that: the intelligent monitoring system realizes intelligent monitoring of the environment of the transformer substation, can send a control instruction to the control module through the server when environment abnormal information is detected, realizes automatic adjustment of the environment, has high intelligence and saves manpower.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a block diagram of a substation environmental security monitoring system according to an exemplary embodiment of the present invention;
fig. 2 is a block diagram of a server according to an exemplary embodiment of the present invention.
Reference numerals:
the environment monitoring system comprises an environment monitoring module 1, a server 2, an environment adjusting module 3, a control module 4, a storage server 10 and a processor 20.
Detailed Description
The invention is further described with reference to the following examples.
Referring to fig. 1, an embodiment of the present invention provides a transformer substation environmental security monitoring system, including an environment monitoring module 1, a server 2, an environment adjusting module 3, and a control module 4, where the environment monitoring module 1 is configured to detect environment sensing data of a transformer substation and transmit the environment sensing data to the server 2; the server 2 sends a control instruction to the control module 4 according to the environment perception data, and the control module 4 is connected with the environment adjusting module 3 and used for controlling the environment adjusting module 3 to adjust the environment of the transformer substation according to the control instruction.
The intelligent monitoring system realizes intelligent monitoring of the environment of the transformer substation, can send a control instruction to the control module 4 through the server 2 when environment abnormal information is detected, realizes automatic adjustment of the environment, has high intelligence and saves manpower.
In a manner that can be realized, the environment adjusting module 3 includes a dehumidifying device for dehumidifying the environment of the transformer substation, an air conditioner for adjusting the temperature of the environment of the transformer substation, and a drainage device for draining accumulated water in the transformer substation.
In one implementation, as shown in fig. 2, the server 2 includes a storage server 10 for storing the environmental awareness data and a processor 20 for performing anomaly analysis on the environmental awareness data.
In one implementation, the wireless sensor network comprises sensor nodes and sink nodes deployed in a substation environment monitoring area; the sensor nodes are used for collecting environment perception data, and the sink nodes upload the fused environment perception data to the server after collecting and fusing the environment perception data of the sensor nodes.
In an implementation mode, a plurality of sensor nodes are selected in each sensor node in advance as cluster heads, when a network is initialized, each cluster head broadcasts a message to the sensor nodes in a communication range, and the sensor nodes determine cluster heads with the closest distance to join a cluster according to the broadcast message; if the distance between the sensor node and the corresponding cluster head is smaller than a preset distance threshold value, the sensor node directly establishes communication with the corresponding cluster head, and if the distance between the sensor node and the corresponding cluster head is not smaller than the preset distance threshold value, the sensor node selects another sensor node as a relay node in the cluster where the sensor node is located and establishes communication with the relay node.
The embodiment collects the environmental perception data in a clustering mode, and is beneficial to saving energy consumption of environmental perception data transmission.
In an implementation manner, the selecting a plurality of sensor nodes as cluster heads in advance in each sensor node includes:
and performing grid division on the monitoring area, dividing the monitoring area into a plurality of sub-areas, and selecting the sensor node with the largest weight as a cluster head in each sub-area, wherein the weight is calculated by the following formula:
in the formula, QiaIs the weight value of the sensor node a in the sub-area i, maIs the number of sensor nodes in the communication range of the sensor node a, NiThe number of the sensor nodes in the sub-area i is shown, and D (a, O) is the central point O of the sub-area from the sensor node a to the sub-area where the sensor node a is locatedaDistance of (D)maxThe maximum distance D from the sensor node to the sink node in the monitoring areaminThe minimum distance from the sensor node to the aggregation node in the monitoring area is defined, k is the number of sub-areas, q is1、q2Is a preset weight coefficient.
In the cluster head selection mechanism set in this embodiment, the monitoring area is divided into a plurality of sub-areas by meshing, the sensor node with the largest weight is selected as the cluster head in each sub-area, and the calculation standard of the weight is set correspondingly. Through the selection mechanism, the cluster heads can be distributed relatively uniformly, so that the energy consumption among the cluster heads is balanced, meanwhile, the selected cluster heads can cover the sensor nodes in the sub-area where the cluster heads are located as much as possible, and the distance between any two cluster heads is made to be equal as much as possible, so that the energy consumption for transmitting environment sensing data among the cluster heads is balanced, the energy consumption of a wireless sensor network is reduced on the whole, and the period for monitoring the environment of a transformer substation is prolonged.
In an implementation manner, the selecting, by a sensor node, another sensor node as a relay node in a cluster in which the sensor node is located specifically includes:
(1) setting other sensor nodes in the communication range of the sensor nodes as neighbor nodes, sending a first request message to the neighbor nodes in the cluster where the sensor nodes are located, counting the transmission delay of the first request message fed back by each neighbor node, and selecting the neighbor node with the shortest transmission delay as a relay node;
(2) the sensor node sends a second request message to the relay node periodically according to a set period, and counts the transmission delay of the second request message fed back by the relay node, the information fed back by the relay node comprises the current residual energy of the relay node, and the sensor node calculates the reliability of the relay node according to the transmission delay and the current residual energy:
in the formula, PcAs reliability of the relay node c, ecIs the current remaining energy of the relay node c, F (e)c,emin) To determine the value function, when ecLess than a predetermined minimum energy eminWhen (e)c,emin) When e is equal to 0cNot less than a predetermined minimum energy eminWhen (e)c,emin)=1;δc→+(t) feeding back the transmission delay, δ, of the second request message for relay node cc(0) Feeding back the transmission delay of the first request message for the relay node c, wherein T (0, T) is the time difference between the first request message fed back by the relay node c and the second request message fed back by the relay node c;
when P is presentcLess than a predetermined minimum confidence level PminAnd when the relay node is selected again by the sensor node.
In the embodiment, when the relay node is selected, the relay node is directly selected according to the transmission delay, so that the speed of establishing the route can be increased. The embodiment also innovatively designs a monitoring mechanism for the relay node, calculates the reliability of the relay node through two factors of whether the feedback efficiency of the relay node is reduced and whether the energy meets the requirement, and updates the relay node when the reliability is lower than the preset minimum reliability, so that the efficiency of environment perception data transmission is favorably ensured, and a good foundation is laid for subsequently and efficiently adjusting the environment of the transformer substation.
In one implementation manner, the cluster head records time information of receiving environment perception data transmitted by a sensor node which establishes communication with the cluster head, and periodically detects the abnormality of the sensor node which establishes communication with the cluster head according to the time information, and does not receive the environment perception data transmitted by the sensor node of which the detection result is abnormal.
Wherein, carry out the anomaly detection to the sensor node who establishes communication with it, include:
(1) the cluster head calculates whether the time information of the environment perception data transmitted to the cluster head by the sensor node meets the following normal data transmission conditions:
|T(u)-T(u-1)-[T(u-1)-T(u-2)]|≤Tmax
wherein T (u) represents the current time of the cluster head receiving the environmental perception data transmitted by the sensor node, T (u-1) represents the time of the cluster head receiving the environmental perception data transmitted by the sensor node, T (u-2) represents the time of the cluster head receiving the environmental perception data transmitted by the sensor node, and T (u-2) represents the time of the cluster head receiving the environmental perception data transmitted by the sensor nodemaxIs a preset maximum time interval;
(2) if the normal data transmission condition is not met, the cluster head calculates the average value of the currently received environment sensing data of all neighbor nodes of the sensor node to obtain the average value of the environment sensing data, the average value of the environment sensing data is correspondingly compared with the environment sensing data of the sensor node, and if the difference between the two data exceeds a preset threshold value, the sensor node is judged to be abnormal.
The cluster head records the time information of the environment sensing data transmitted by the sensor node which establishes communication with the cluster head, and periodically detects the abnormality of the sensor node which establishes communication with the cluster head according to the time information, so that the reliability of environment sensing data collection is improved; the embodiment provides a new method for carrying out anomaly detection on a sensor node, which is used for carrying out anomaly detection on the sensor node which establishes communication with the sensor node, firstly investigating the time interval of data transmission of the sensor node, continuously comparing the data transmitted by the sensor node with the data of peripheral sensor nodes when the normal transmission condition of the data is not met, and judging the sensor node to be abnormal when the environment perception data transmitted by the sensor node does not meet the requirement, so that the detection is convenient. The embodiment does not receive the environment sensing data transmitted by the sensor node with the abnormal detection result, improves the precision of the collected environment sensing data, and is beneficial to providing more accurate environment data information for the subsequent regulation of the environment of the transformer substation, thereby further improving the precision of regulating the environment of the transformer substation.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (7)

1. A transformer substation environment safety monitoring system is characterized by comprising an environment monitoring module, a server, an environment adjusting module and a control module, wherein the environment monitoring module is used for detecting environment sensing data of a transformer substation and transmitting the environment sensing data to the server; the server sends a control instruction to the control module according to the environment perception data, and the control module is connected with the environment adjusting module and used for controlling the environment adjusting module to adjust the environment of the transformer substation according to the control instruction.
2. The transformer substation environment safety monitoring system according to claim 1, wherein the wireless sensor network comprises sensor nodes and sink nodes deployed in a transformer substation environment monitoring area; the sensor nodes are used for collecting environment perception data, and the sink nodes upload the fused environment perception data to the server after collecting and fusing the environment perception data of the sensor nodes.
3. The transformer substation environment safety monitoring system according to claim 2, wherein a plurality of sensor nodes are selected from each sensor node in advance as cluster heads, each cluster head broadcasts a message to the sensor nodes within a communication range during network initialization, and the sensor nodes determine cluster heads closest to each other to join a cluster according to the broadcast message; if the distance between the sensor node and the corresponding cluster head is smaller than a preset distance threshold value, the sensor node directly establishes communication with the corresponding cluster head, and if the distance between the sensor node and the corresponding cluster head is not smaller than the preset distance threshold value, the sensor node selects another sensor node as a relay node in the cluster where the sensor node is located and establishes communication with the relay node.
4. The transformer substation environment safety monitoring system according to claim 3, wherein the cluster head records time information of environment sensing data transmitted by the sensor node which is in communication with the cluster head, and periodically detects abnormality of the sensor node which is in communication with the cluster head according to the time information, and does not receive the environment sensing data transmitted by the sensor node which is detected as abnormal.
5. A substation environment safety monitoring system according to claim 3, wherein the pre-selecting a plurality of sensor nodes among the sensor nodes as cluster heads comprises:
and performing grid division on the monitoring area, dividing the monitoring area into a plurality of sub-areas, and selecting the sensor node with the largest weight as a cluster head in each sub-area, wherein the weight is calculated by the following formula:
in the formula, QiaIs the weight value of the sensor node a in the sub-area i, maIs the number of sensor nodes in the communication range of the sensor node a, NiFor the number of sensor nodes in the sub-area i, D (a, O) is the sensorNode a reaches the central point O of the sub-region where the node a is positionedaDistance of (D)maxThe maximum distance D from the sensor node to the sink node in the monitoring areaminThe minimum distance from the sensor node to the aggregation node in the monitoring area is defined, k is the number of sub-areas, q is1、q2Is a preset weight coefficient.
6. A substation environment safety monitoring system according to any one of claims 1-5, wherein the environment adjusting module comprises a dehumidification device for dehumidifying the substation environment, an air conditioner for adjusting the temperature of the substation environment, and a drainage device for draining accumulated water in the substation.
7. The transformer substation environment safety monitoring system according to claim 6, wherein the server comprises a storage server for storing the environment-aware data and a processor for performing anomaly analysis on the environment-aware data.
CN201910901815.XA 2019-09-23 2019-09-23 Environmental safety monitoring system of transformer substation Pending CN110618616A (en)

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