CN113805019A - Gateway-based partial discharge detection method and device, gateway equipment and medium - Google Patents
Gateway-based partial discharge detection method and device, gateway equipment and medium Download PDFInfo
- Publication number
- CN113805019A CN113805019A CN202111083053.0A CN202111083053A CN113805019A CN 113805019 A CN113805019 A CN 113805019A CN 202111083053 A CN202111083053 A CN 202111083053A CN 113805019 A CN113805019 A CN 113805019A
- Authority
- CN
- China
- Prior art keywords
- partial discharge
- target
- state monitoring
- monitoring device
- data message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000012806 monitoring device Methods 0.000 claims abstract description 134
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims description 70
- 238000009434 installation Methods 0.000 claims description 28
- 238000004590 computer program Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application relates to a gateway-based partial discharge detection method and device, gateway equipment and a storage medium. The method comprises the following steps: the gateway equipment acquires a data message from the state monitoring device based on an IEC61850 protocol, and determines a target data message for detecting the partial discharge phenomenon from the data message; acquiring partial discharge signal characteristic parameters from the target data message, and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters; if the partial discharge phenomenon occurs, determining a target state monitoring device corresponding to the target data message; and acquiring the position information of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information. By adopting the method, the efficiency of partial discharge detection can be improved.
Description
Technical Field
The present application relates to the field of power detection technologies, and in particular, to a gateway-based partial discharge detection method and apparatus, a gateway device, and a storage medium.
Background
At present, with the development of the power industry, more and more high-voltage power equipment is put into use, wherein, the high-voltage power equipment inevitably generates insulation deterioration to cause a partial discharge phenomenon, and the phenomenon may cause the final insulation breakdown of the high-voltage power equipment to cause a discharge accident, which seriously affects the safe operation of the power equipment, and has received more and more attention from all social circles.
In the traditional technology, the detection of the partial discharge phenomenon usually utilizes a sensor to collect a partial discharge signal, and transmits the partial discharge signal to a monitoring main station, and the positioning of the partial discharge is realized by the monitoring main station.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method and an apparatus for detecting partial discharge based on a gateway, a gateway device, and a storage medium.
A partial discharge detection method based on a gateway is applied to gateway equipment, and the method comprises the following steps:
acquiring a data message from a state monitoring device based on an IEC61850 protocol, and determining a target data message for detecting a partial discharge phenomenon from the data message;
acquiring partial discharge signal characteristic parameters from the target data messages, and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters;
if the partial discharge phenomenon occurs, determining a target state monitoring device corresponding to the target data message;
and acquiring the position information of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information.
In one embodiment, the data packet includes a plurality of frame format bits; the determining a target data message for detecting a partial discharge phenomenon from the data message includes: acquiring a first data frame sequence positioned in a first frame format bit in the data message; the first frame format bit is used for representing the message type of the data message; acquiring a target sequence corresponding to a message type for detecting a partial discharge phenomenon according to a preset corresponding relation between the message type and a data frame sequence; and if the first data frame sequence is the same as the target sequence, determining that the data message is the target data message.
In one embodiment, the obtaining the partial discharge signal characteristic parameter from the target data packet includes: acquiring a second data frame sequence positioned in a second frame format bit in the target data message; and acquiring the signal amplitude and the signal frequency of the partial discharge signal corresponding to the target data message according to the second data frame sequence, and using the signal amplitude and the signal frequency as the characteristic parameters of the partial discharge signal.
In one embodiment, the determining the target status monitoring device corresponding to the target data packet includes: acquiring a third data frame sequence positioned at a third frame format bit in the target data message, and acquiring a target equipment number corresponding to the target data message according to the third data frame sequence; and acquiring the state monitoring device corresponding to the target equipment number as the target state monitoring device according to the preset corresponding relation between the equipment number and the state monitoring device.
In one embodiment, the determining the occurrence area of the partial discharge phenomenon according to the position information includes: acquiring a monitoring range of the target state monitoring device; and taking the area formed by taking the position information as the center and taking the monitoring range as the radius as the occurrence area of the partial discharge phenomenon.
In one embodiment, the obtaining the monitoring range of the target state monitoring device includes: acquiring the equipment type of the target state monitoring device; and determining the monitoring range of the target state monitoring device according to the equipment type.
In one embodiment, the obtaining the location information of the target status monitoring device includes: determining the installation position of the target state monitoring device from a pre-stored installation position table carrying installation position information of a plurality of state monitoring devices as the position information; or acquiring the position information of the target state monitoring device from a fourth data frame sequence positioned in a fourth frame format bit in the target data message; and the fourth frame format bit is used for representing the installation position of the target state monitoring device.
A gateway-based partial discharge detection device is applied to gateway equipment, and the device comprises:
the target message determining module is used for acquiring a data message from the state monitoring device based on an IEC61850 protocol and determining a target data message for detecting a partial discharge phenomenon from the data message;
the partial discharge phenomenon judgment module is used for acquiring partial discharge signal characteristic parameters from the target data messages and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters;
the target device determining module is used for determining a target state monitoring device corresponding to the target data message if the partial discharge phenomenon occurs;
and the partial discharge area determining module is used for acquiring the position information of the target state monitoring device and determining the occurrence area of the partial discharge phenomenon according to the position information.
A gateway device comprising a memory storing a computer program and a processor implementing the steps of the above method when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the gateway-based partial discharge detection method and device, the gateway equipment and the storage medium, the data message is obtained from the state monitoring device through the gateway equipment based on the IEC61850 protocol, and the target data message for detecting the partial discharge phenomenon is determined from the data message; acquiring partial discharge signal characteristic parameters from the target data message, and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters; if the partial discharge phenomenon occurs, determining a target state monitoring device corresponding to the target data message; and acquiring the position information of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information. According to the method and the device, the data message collected by the gateway equipment can be obtained from the state monitoring device by utilizing an IEC61850 protocol, the partial discharge signal characteristic parameter is obtained from the data message and used for judging the partial discharge phenomenon, and meanwhile, the state monitoring device for collecting the data message can be determined based on the data message, so that the occurrence area of the partial discharge phenomenon is found out, compared with the traditional technology that the partial discharge can be positioned only by a monitoring main station running complex algorithm, the partial discharge detection realized by the gateway equipment can improve the efficiency of the partial discharge detection.
Drawings
FIG. 1 is a diagram of an embodiment of an application environment of a gateway-based partial discharge detection method;
FIG. 2 is a schematic flow chart of a gateway-based partial discharge detection method according to an embodiment;
FIG. 3 is a schematic flow chart illustrating a process for determining a target data packet from data packets according to an embodiment;
FIG. 4 is a schematic flow diagram of a monitoring device for determining a target condition in one embodiment;
FIG. 5 is a block diagram of a gateway-based partial discharge detection apparatus according to an embodiment;
fig. 6 is an internal structural diagram of a gateway device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The gateway-based partial discharge detection method provided by the application can be applied to the application environment shown in fig. 1. The state monitoring device 101 communicates with the gateway device 102 through an IEC61850 protocol. Specifically, the state monitoring device 101 may collect partial discharge data used for detecting a partial discharge phenomenon, for example, characteristic parameters of partial discharge signals are collected, and the partial discharge data are transmitted to the gateway device 102 after forming a data packet. The gateway device 102 may analyze the received data packet to obtain a characteristic parameter of the partial discharge signal, and use the characteristic parameter to determine whether a partial discharge phenomenon occurs, and if the partial discharge phenomenon occurs, the gateway device 102 may also find a position of a corresponding state monitoring device that collects the data packet based on the collected data packet, so as to determine an occurrence region of the partial discharge phenomenon. The state monitoring device 101 may be various devices for collecting information, such as a signal collecting device for collecting power signals, or a sensor for collecting data, and the gateway device 102 may be an intelligent gateway with edge computing capability.
In one embodiment, as shown in fig. 2, a partial discharge detection method based on a gateway is provided, which is described by taking the gateway device 102 in fig. 1 as an example, and includes the following steps:
step S201, the gateway device 102 acquires a data packet from the state monitoring apparatus 101 based on the IEC61850 protocol, and determines a target data packet for detecting the partial discharge phenomenon from the data packet.
The IEC61850 protocol is a general protocol in the field of power system automation, and by uniformly modeling an object-oriented substation automation system and adopting an abstract communication service interface independent of a network structure, interoperability among equipment can be enhanced, and seamless connection among equipment of different manufacturers can be realized. In this embodiment, the data communication between the gateway device 102 and the state monitoring apparatus 101 is performed by using the IEC61850 protocol, and the gateway device 102 may obtain different types of data packets from the state monitoring apparatus 101, which may include: the data messages are used for detecting whether the cable tower is inclined or not, detecting meteorological information, detecting the temperature of a wire and the like. The different types of data messages may come from different status monitoring devices 101, or the same status monitoring device 101 may detect multiple different types of data at the same time to form different types of messages. The target data packet is a plurality of types of data packets obtained by the gateway device 102, and is used for detecting a partial discharge phenomenon. Specifically, when the gateway device 102 needs to perform detection of the tower inclination state, the data packet for detecting the tower inclination state may be determined from the multiple data packets collected by the state monitoring device 101, and the data packet is used as a target data packet.
Step S202, the gateway device 102 obtains the partial discharge signal characteristic parameter from the target data packet, and determines whether the partial discharge phenomenon occurs based on the partial discharge signal characteristic parameter.
The partial discharge signal characteristic parameter refers to a characteristic parameter of a partial discharge signal carried in a target data packet, and may be, for example, a signal amplitude, a signal frequency, and the like of the partial discharge signal acquired by the state monitoring device 101, and the partial discharge signal characteristic parameter may be obtained by performing signal analysis on the partial discharge signal acquired by the state monitoring device 101, and transmitting the partial discharge signal to the gateway device 102 in a form of converting the partial discharge signal into a data packet. After obtaining the target data packet, the gateway device 102 may read the partial discharge signal characteristic parameter analyzed by the state monitoring device 101 from the target data packet, and determine whether a partial discharge phenomenon occurs based on the obtained partial discharge signal characteristic parameter, where the analysis of the partial discharge phenomenon may be performed through multiple monitoring dimensions, for example, based on the obtained partial discharge signal characteristic parameter.
In step S203, if the partial discharge phenomenon occurs, the gateway device 102 determines a target state monitoring apparatus corresponding to the target data packet.
In this embodiment, the gateway device 102 may be in communication connection with a plurality of status monitoring devices 101, and the target status monitoring device refers to the status monitoring device 101 that sends a target data packet to the gateway device 102. When the gateway device 102 detects that the partial discharge phenomenon occurs, the target status monitoring device that sends the target data packet can be found from the plurality of status monitoring devices 101.
Step S204, the gateway device 102 obtains the position information of the target state monitoring apparatus, and determines the occurrence area of the partial discharge phenomenon according to the position information.
After the target status monitoring apparatus is determined in step S203, the gateway device 102 may further obtain the location information of the target status monitoring apparatus, for example, the location information of the target status monitoring apparatus may be obtained through a positioning device installed on the target status monitoring apparatus, and then may find out the area where the partial discharge phenomenon occurs according to the determined location information, for example, the area where the distance from the location information is smaller than a preset distance threshold may be used as the area where the partial discharge phenomenon occurs.
In the above gateway-based partial discharge detection method, the gateway device 102 acquires a data packet from the state monitoring apparatus 101 based on the IEC61850 protocol, and determines a target data packet for detecting a partial discharge phenomenon from the data packet; acquiring partial discharge signal characteristic parameters from the target data message, and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters; if the partial discharge phenomenon occurs, determining a target state monitoring device corresponding to the target data message; and acquiring the position information of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information. According to the method and the device, the data messages collected by the gateway equipment 102 can be obtained from the state monitoring device 101 by utilizing an IEC61850 protocol, partial discharge signal characteristic parameters are obtained from the data messages and used for judging the partial discharge phenomenon, meanwhile, the state monitoring device 101 for collecting the data messages can be determined based on the data messages, and therefore the occurrence area of the partial discharge phenomenon is found out, compared with the prior art that the partial discharge positioning can be realized only by a monitoring main station running complex algorithm, the partial discharge detection realized by the gateway equipment 102 can improve the efficiency of the partial discharge detection.
In one embodiment, a data packet includes a plurality of frame format bits; as shown in fig. 3, step S201 may further include:
step S301, the gateway device 102 obtains a first data frame sequence located in a first frame format bit in a data packet; the first frame format bit is used for representing the message type of the data message.
The data packet obtained by the gateway device 102 from the state monitoring apparatus 101 may be composed of a plurality of frame format bits, different frame format bits are respectively used for representing different information of the packet, for example, the frame format bits may include a frame format bit for representing a beginning of the packet, a frame format bit for representing a packet length of the data packet, a frame format bit for representing a frame format type of a data frame constituting the data packet, and the like, and the first frame format bit may refer to a frame format bit for representing a packet type of the data packet. Since the applications of the data packets obtained by the gateway device 102 are different, in order to enable the gateway device 102 to determine the respective applications of the data packets, the state monitoring apparatus 101 may carry a data frame sequence used for representing a packet type corresponding to the data packet when forming the data packet, and use the data frame sequence as a data frame sequence of a first frame format bit, that is, a first data frame sequence. After the gateway device 102 obtains the data packet, the obtained data packet may be analyzed to find out a data frame sequence located at the first frame format bit, that is, a first data frame sequence.
Step S302, the gateway device 102 obtains a target sequence corresponding to the message type for detecting the partial discharge phenomenon according to a preset correspondence between the message type and the data frame sequence.
The target sequence refers to a data frame sequence representing a message type used for detecting the partial discharge phenomenon, specifically, the gateway device 102 stores in advance a correspondence relationship between a message type for implementing different purposes and different data frame sequences, and then the gateway device 102 may use the data frame sequence corresponding to the message type used for detecting the partial discharge phenomenon as the target sequence.
For example, if the data frame sequence of the data packet that indicates whether the cable tower is tilted is stored in advance as sequence a, the data frame sequence of the data packet that indicates the partial discharge phenomenon is detected as sequence B, and the data frame sequence of the data packet that indicates the temperature of the detection conductor is stored as sequence C in the gateway device 102, the gateway device 102 may use the sequence B as the target sequence.
Step S303, if the first data frame sequence is the same as the target sequence, the gateway device 102 determines that the data packet is the target data packet.
Finally, the gateway device 102 may use a data packet, of the obtained multiple data packets, in which the first data frame sequence is the same as the target sequence, as a target data packet that is finally used for detecting the partial discharge phenomenon.
In this embodiment, the gateway device 102 reads the first frame sequence of the first frame format bit, that is, the target data packet for detecting the partial discharge phenomenon can be found based on the correspondence between the packet type and the frame sequence, so that the acquisition efficiency of the target data packet is improved, and the efficiency of the partial discharge detection is improved.
In one embodiment, step S202 may further include: gateway device 102 obtains a second data frame sequence located in a second frame format bit in the target data message; and acquiring the signal amplitude and the signal frequency of the partial discharge signal corresponding to the target data message according to the second data frame sequence, and using the signal amplitude and the signal frequency as the characteristic parameters of the partial discharge signal.
The second frame format bit refers to a frame format bit used for the parameter information related to the partial discharge signal in the target data packet, and the second frame sequence refers to a frame sequence located at the second frame format bit. Specifically, after the state monitoring device 101 finishes collecting the partial discharge signal, it may analyze the partial discharge signal, so as to obtain signal characteristic parameters of the partial discharge signal, such as a signal amplitude of the partial discharge signal and a signal frequency of the partial discharge signal, convert the signal characteristic parameters into a data frame sequence in a floating point format, store the data frame sequence in a second frame format bit of the target data packet, and send the data frame sequence to the gateway device 102. The gateway device 102 may analyze the acquired target data packet, find a data frame sequence located at the second frame format bit, that is, a second data frame sequence, and obtain the partial discharge signal characteristic parameter stored in the target data packet based on the second data frame sequence.
In this embodiment, the gateway device 102 may obtain the characteristic parameters of the partial discharge signal collected by the state monitoring device by reading the second data frame sequence located in the second frame format bit in the target data packet, so as to accurately determine whether the partial discharge signal occurs.
In addition, as shown in fig. 4, step S203 may further include:
step S401, the gateway device 102 obtains a third data frame sequence located at a third frame format bit in the target data packet, and obtains a target device number corresponding to the target data packet according to the third data frame sequence.
The third frame format bit is a frame format bit in the target data packet for storing the status monitoring apparatus 101, i.e., the device information of the target status monitoring apparatus, which collects the target data packet, and is used to characterize the source device of the data packet, for example, the device number of the target status monitoring apparatus, and the third frame format bit refers to a frame sequence on the third frame format bit. Specifically, when the target status monitoring device generates the target data packet, it may generate a corresponding data frame sequence based on the corresponding device number, and store the data frame sequence in the third frame format bit of the target data packet. The gateway device 102 may read a data frame sequence located at a third frame format bit, that is, a third data frame sequence, from the acquired target data packet, and determine, based on the obtained third data frame sequence, a device number of the target state monitoring apparatus that acquires the target data packet, as a target data number.
In step S402, the gateway device 102 acquires the status monitoring device corresponding to the target device number as the target status monitoring device according to the preset correspondence between the device number and the status monitoring device.
In this embodiment, the gateway device 102 may store correspondence between different device numbers and different status monitoring devices 101 in advance, for example, it is preset that the status monitoring device corresponding to the device number a is device a, the status monitoring device corresponding to the device number B is device B, and the status monitoring device corresponding to the device number C is device C, so that after the gateway device 102 obtains the target device number in step S401, the status monitoring device 101 corresponding to the target device number may be found based on the correspondence, and used as the target status monitoring device, for example, the obtained target device number is device number a, and then the device a is used as the target status monitoring device.
In this embodiment, the gateway device 102 may obtain the target state monitoring device through the third data frame sequence located in the third frame format bit in the target data packet and the preset corresponding relationship between the device number and the state monitoring device, so as to accurately obtain the position information of the target state monitoring device, and improve the accuracy of determining the occurrence region of the partial discharge phenomenon.
In one embodiment, step S204 may further include: the gateway device 102 acquires a monitoring range of the target state monitoring device; an area formed with the position information as the center and the monitoring range as the radius is set as the occurrence area of the partial discharge phenomenon.
The monitoring range refers to a maximum range of partial discharge signals that can be acquired by the target state monitoring device, for example, the target state monitoring device can detect partial discharge signals within 100 meters at most, the monitoring range of the target state monitoring device can be set to 100 meters, after the gateway device 102 determines the target state monitoring device that sends the target data packet, the monitoring range of the target state monitoring device can be obtained by means of querying a device database, for example, and a region formed by taking the position information of the target state monitoring device as a center and taking the monitoring range as a radius is taken as a generation region of a partial discharge phenomenon, that is, a region within 100 meters around the target state monitoring device as a center is taken as a generation region of the partial discharge phenomenon.
Further, the gateway device 102 may further obtain a monitoring range of the target status monitoring apparatus, and may further include: the gateway device 102 acquires the device type of the target state monitoring apparatus; and determining the monitoring range of the target state monitoring device according to the equipment type.
In this embodiment, after the gateway device 102 determines the target state monitoring apparatus, the gateway device 102 may determine the device type of the target state monitoring apparatus in order to further obtain the monitoring range of the target state monitoring apparatus. The method for determining the device type may include multiple methods, for example, the device type of the target status monitoring apparatus may be found by querying a device database, or the device model information of the target status monitoring apparatus may be stored in a data packet when the target status monitoring apparatus forms the data packet, and the gateway device 102 may directly read the device model information from the data packet as the device type of the target status monitoring apparatus.
Then, the gateway device 102 may further find out the monitoring range of the target state monitoring device based on the determined device type of the target state monitoring device, which may be a correspondence relationship between the device types and the monitoring ranges of different target state monitoring devices that are set in the gateway device 102 in advance, for example, the monitoring range of the state monitoring device of the device type a may be set as range a, the monitoring range of the state monitoring device of the device type B may be set as range B, and the monitoring range of the state monitoring device of the device type C may be set as range C, and if the gateway device 102 determines that the device type of the target state monitoring device is device type C, the range C may be set as the monitoring range of the target state monitoring device.
In the above embodiment, the gateway device 102 may determine the occurrence area of the partial discharge phenomenon according to the monitoring range of the target state monitoring apparatus and the location information of the target state monitoring apparatus, and the determination of the monitoring range is determined according to the device type of the target state monitoring apparatus, so that the accuracy of the occurrence area of the obtained partial discharge phenomenon may be improved.
In addition, in an embodiment, step S204 may further include: the gateway device 102 determines the installation position of the target state monitoring device from a pre-stored installation position table carrying installation position information of a plurality of state monitoring devices as position information; or the gateway device 102 acquires the position information of the target state monitoring apparatus from the fourth data frame sequence located in the fourth frame format bit in the target data message; and the fourth frame format bit is used for representing the installation position of the target state monitoring device.
In this embodiment, the manner for the gateway device 102 to determine the location information of the target status monitoring apparatus may include at least two of the following: for example, the gateway device 102 may find the location information of the target condition monitoring device from the installation location table for the condition monitoring device. The installation position table may store installation positions of different state monitoring devices in advance, and after the gateway device 102 determines the target state monitoring device, the installation position of the target state monitoring device may be found from the installation position table and used as position information of the target state monitoring device. Or the gateway device 102 may directly read the location information from a fourth data frame sequence located in a fourth frame format bit in the target data packet, where the fourth frame format bit is used to represent an installation location of the target status monitoring apparatus, and when the target status monitoring apparatus sends the target data packet, the installation location information may also be stored in the fourth frame format bit of the target data packet, and sent to the gateway device 102. After the gateway device 102 obtains the target data packet, it may read a data frame sequence located at a fourth frame format bit in the target data packet, that is, the fourth data frame sequence, so as to obtain the installation position, and use the installation position as the position information of the target state monitoring apparatus.
In this embodiment, the gateway device 102 may obtain the location information of the target state monitoring apparatus from the installation location table or the fourth data frame sequence carried by the target data packet, so that there are various implementation manners to implement the location information acquisition of the target state monitoring apparatus, and the implementability of determining the occurrence region of the partial discharge phenomenon is improved.
In an application example, a gateway-based partial discharge detection method is further provided, that is, partial discharge related data acquired by some high-frequency sensors, for example, are transmitted to an intelligent gateway in the form of a message through a local discharge sensor installed on the site, the intelligent gateway can analyze the acquired message, extract the partial discharge related data, judge whether partial discharge exists, acquire equipment of sensor equipment transmitting the message if the partial discharge exists, and find a corresponding equipment position based on the equipment, so that the positioning of the partial discharge is realized. The method specifically comprises the following steps:
(1) and acquiring the data message acquired by the state monitoring device, and determining a target data message for detecting the partial discharge phenomenon from the data message.
The data messages can carry frame format bits used for representing message types of the data messages, the intelligent gateway can collect the data messages of various message types and respectively come from sensors realizing different functions, and the sensors can communicate with the intelligent gateway through an IEC61850 protocol. Specifically, the intelligent gateway may read a data frame sequence corresponding to the frame format bits in the acquired data packet, and find out a target data packet for detecting a partial discharge phenomenon according to the obtained data frame sequence.
For example, the intelligent gateway may store a plurality of message types and a corresponding relationship between data frame sequences in advance, and the intelligent gateway may find a target sequence corresponding to a message type for detecting a partial discharge phenomenon according to the corresponding relationship, and then may use a data frame sequence corresponding to the frame format bit as a data message of the target sequence as the target data message.
(2) And reading the partial discharge signal characteristic parameters from the target data message, and judging whether the partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters.
The partial discharge signal characteristic parameters may be used to describe signal characteristics of the partial discharge signal acquired by the state monitoring device, and may include, for example, a signal amplitude and a signal frequency of the partial discharge signal, and then the intelligent gateway may determine whether a partial discharge phenomenon occurs based on the signal amplitude and the signal frequency of the partial discharge signal.
(3) And if the partial discharge phenomenon exists, determining a target state monitoring device corresponding to the data message according to the data message.
Specifically, the intelligent gateway may first find a state monitoring device that transmits a data packet according to the acquired data packet, as a target state monitoring device, for example, a frame format bit that may include a certain device identifier for characterizing the transmitted target state monitoring device in the data packet may be used, and when the target state monitoring device needs to be determined, a frame sequence corresponding to the frame format bit may be read from the frame format bit, so as to obtain the device identifier of the device, and the target state monitoring device corresponding to the device identifier is determined by using a preset correspondence between the device identifier and the device.
(4) And acquiring the position information of the target state monitoring device and the detection range of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information and the detection range.
The position information may refer to a position where the target state monitoring device is located when the target data packet is collected, and the detection range may refer to a range where the target state monitoring device can collect data at the maximum, and then, a region formed by taking the position where the target state monitoring device is located as a center and taking the detection range as a radius may be used as a generation region of the partial discharge phenomenon.
In addition, the position information may be obtained by finding the position information corresponding to the target state monitoring device from a preset installation position table, or by directly reading from a target data message, for example, the target data message carries a frame format bit for representing the longitude and latitude of the installation position, and the intelligent gateway directly reads a frame sequence corresponding to the frame format bit, so as to obtain the position information of the target state monitoring device.
In the above application example, the local discharge sensor installed on the site, for example, some high-frequency sensors may acquire local discharge related data, form a message form and send the message to the intelligent gateway, and the intelligent gateway may analyze the acquired message, extract the local discharge related data, and determine whether a local discharge exists, and if a local discharge exists, acquire an equipment number of the sensor equipment that sends the message, and find the position of the local discharge sensor based on the equipment number, so that the positioning of the local discharge can be achieved without a complex algorithm, and the efficiency of local discharge detection can be improved.
It should be understood that although the various steps in the flow charts of fig. 2-4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-4 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 5, there is provided a gateway-based partial discharge detection apparatus, applied to a gateway device, including: a target message determining module 501, an partial discharge phenomenon judging module 502, a target device determining module 503, and a partial discharge region determining module 504, wherein:
a target message determining module 501, configured to obtain a data message from the state monitoring device based on an IEC61850 protocol, and determine a target data message for detecting a partial discharge phenomenon from the data message;
a partial discharge phenomenon determining module 502, configured to obtain a partial discharge signal characteristic parameter from a target data packet, and determine whether a partial discharge phenomenon occurs based on the partial discharge signal characteristic parameter;
a target device determining module 503, configured to determine a target state monitoring device corresponding to the target data packet if a partial discharge phenomenon occurs;
the partial discharge area determining module 504 is configured to obtain location information of the target state monitoring device, and determine an occurrence area of a partial discharge phenomenon according to the location information.
In one embodiment, a data packet includes a plurality of frame format bits; the target packet determining module 501 is further configured to obtain a first data frame sequence located in a first frame format bit in a data packet; the first frame format bit is used for representing the message type of the data message; acquiring a target sequence corresponding to a message type for detecting a partial discharge phenomenon according to a preset corresponding relation between the message type and a data frame sequence; and if the first data frame sequence is the same as the target sequence, determining that the data message is the target data message.
In an embodiment, the partial discharge phenomenon determining module 502 is further configured to obtain a second data frame sequence located in a second frame format bit in the target data packet; and acquiring the signal amplitude and the signal frequency of the partial discharge signal corresponding to the target data message according to the second data frame sequence, and using the signal amplitude and the signal frequency as the characteristic parameters of the partial discharge signal.
In an embodiment, the target device determining module 503 is further configured to obtain a third data frame sequence located at a third frame format bit in the target data packet, and obtain a target device number corresponding to the target data packet according to the third data frame sequence; and acquiring the state monitoring device corresponding to the target equipment number as the target state monitoring device according to the preset corresponding relation between the equipment number and the state monitoring device.
In an embodiment, the partial discharge region determining module 504 is further configured to obtain a monitoring range of the target state monitoring apparatus; an area formed with the position information as the center and the monitoring range as the radius is set as the occurrence area of the partial discharge phenomenon.
In an embodiment, the partial discharge area determining module 504 is further configured to obtain a device type of the target state monitoring apparatus; and determining the monitoring range of the target state monitoring device according to the equipment type.
In an embodiment, the partial discharge region determining module 504 is further configured to determine, as the location information, an installation location of the target status monitoring device from an installation location table that is stored in advance and carries installation location information of a plurality of status monitoring devices; the position information of the target state monitoring device is obtained from a fourth data frame sequence positioned in a fourth frame format bit in the target data message; and the fourth frame format bit is used for representing the installation position of the target state monitoring device.
For specific limitations of the gateway-based partial discharge detection apparatus, reference may be made to the above limitations of the gateway-based partial discharge detection method, which is not described herein again. The modules in the gateway-based partial discharge detection apparatus may be implemented in whole or in part by software, hardware, or a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the gateway device, and can also be stored in a memory in the gateway device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a gateway device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 6. The gateway device includes a processor, a memory, and a communication interface connected by a system bus. Wherein the processor of the gateway device is configured to provide computing and control capabilities. The memory of the gateway device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the gateway device is used for performing wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a gateway-based partial discharge detection method.
Those skilled in the art will appreciate that the structure shown in fig. 6 is a block diagram of only a portion of the structure associated with the present application and does not constitute a limitation on the gateway device to which the present application applies, and that a particular gateway device may include more or less components than those shown, or combine certain components, or have a different arrangement of components.
In one embodiment, there is further provided a gateway device, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A partial discharge detection method based on a gateway is applied to a gateway device, and comprises the following steps:
acquiring a data message from a state monitoring device based on an IEC61850 protocol, and determining a target data message for detecting a partial discharge phenomenon from the data message;
acquiring partial discharge signal characteristic parameters from the target data messages, and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters;
if the partial discharge phenomenon occurs, determining a target state monitoring device corresponding to the target data message;
and acquiring the position information of the target state monitoring device, and determining the occurrence area of the partial discharge phenomenon according to the position information.
2. The method of claim 1, wherein the data packet includes a plurality of frame format bits;
the determining a target data message for detecting a partial discharge phenomenon from the data message includes:
acquiring a first data frame sequence positioned in a first frame format bit in the data message; the first frame format bit is used for representing the message type of the data message;
acquiring a target sequence corresponding to a message type for detecting a partial discharge phenomenon according to a preset corresponding relation between the message type and a data frame sequence;
and if the first data frame sequence is the same as the target sequence, determining that the data message is the target data message.
3. The method according to claim 2, wherein said obtaining the partial discharge signal characteristic parameter from the target data message comprises:
acquiring a second data frame sequence positioned in a second frame format bit in the target data message;
and acquiring the signal amplitude and the signal frequency of the partial discharge signal corresponding to the target data message according to the second data frame sequence, and using the signal amplitude and the signal frequency as the characteristic parameters of the partial discharge signal.
4. The method of claim 2, wherein the determining the target status monitoring device corresponding to the target data packet comprises:
acquiring a third data frame sequence positioned at a third frame format bit in the target data message, and acquiring a target equipment number corresponding to the target data message according to the third data frame sequence;
and acquiring the state monitoring device corresponding to the target equipment number as the target state monitoring device according to the preset corresponding relation between the equipment number and the state monitoring device.
5. The method according to claim 1, wherein the determining the occurrence region of the partial discharge phenomenon according to the position information comprises:
acquiring a monitoring range of the target state monitoring device;
and taking the area formed by taking the position information as the center and taking the monitoring range as the radius as the occurrence area of the partial discharge phenomenon.
6. The method of claim 5, wherein the obtaining of the monitoring range of the target condition monitoring device comprises:
acquiring the equipment type of the target state monitoring device;
and determining the monitoring range of the target state monitoring device according to the equipment type.
7. The method according to any one of claims 1 to 6, wherein the obtaining the position information of the target state monitoring device comprises:
determining the installation position of the target state monitoring device from a pre-stored installation position table carrying installation position information of a plurality of state monitoring devices as the position information;
or
Acquiring the position information of the target state monitoring device from a fourth data frame sequence positioned in a fourth frame format bit in the target data message; and the fourth frame format bit is used for representing the installation position of the target state monitoring device.
8. A gateway-based partial discharge detection device is applied to gateway equipment, and comprises:
the target message determining module is used for acquiring a data message from the state monitoring device based on an IEC61850 protocol and determining a target data message for detecting a partial discharge phenomenon from the data message;
the partial discharge phenomenon judgment module is used for acquiring partial discharge signal characteristic parameters from the target data messages and judging whether a partial discharge phenomenon occurs or not based on the partial discharge signal characteristic parameters;
the target device determining module is used for determining a target state monitoring device corresponding to the target data message if the partial discharge phenomenon occurs;
and the partial discharge area determining module is used for acquiring the position information of the target state monitoring device and determining the occurrence area of the partial discharge phenomenon according to the position information.
9. A gateway device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111083053.0A CN113805019A (en) | 2021-09-15 | 2021-09-15 | Gateway-based partial discharge detection method and device, gateway equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111083053.0A CN113805019A (en) | 2021-09-15 | 2021-09-15 | Gateway-based partial discharge detection method and device, gateway equipment and medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113805019A true CN113805019A (en) | 2021-12-17 |
Family
ID=78895470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111083053.0A Pending CN113805019A (en) | 2021-09-15 | 2021-09-15 | Gateway-based partial discharge detection method and device, gateway equipment and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113805019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804163A (en) * | 2021-09-15 | 2021-12-17 | 南方电网数字电网研究院有限公司 | Tower inclination detection method and device based on gateway, gateway equipment and medium |
| CN117761584A (en) * | 2024-02-22 | 2024-03-26 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070121238A (en) * | 2006-06-21 | 2007-12-27 | 한전케이디엔 주식회사 | Digital substation based on iec61850 measuring partial discharge |
| CN103984795A (en) * | 2014-04-04 | 2014-08-13 | 中国南方电网有限责任公司电网技术研究中心 | IEC (international electro-technical commission) 61850-based on-line partial discharge monitoring equipment communication simulation method |
| CN203965573U (en) * | 2014-07-01 | 2014-11-26 | 许昌许继昌南通信设备有限公司 | A kind of partial discharge monitoring system |
| CN104360248A (en) * | 2014-11-24 | 2015-02-18 | 国家电网公司 | Partial discharging monitoring method and device |
| CN208207131U (en) * | 2018-05-03 | 2018-12-07 | 广东电网有限责任公司 | distribution switch cabinet monitoring system |
| KR20190003171A (en) * | 2017-06-30 | 2019-01-09 | 한국전력공사 | Apparatus and method for processing patial dischage event for data standard compatibility |
| CN109856513A (en) * | 2019-02-25 | 2019-06-07 | 武汉大学 | A kind of gas monitoring method of XPLE cable local discharge or overheat |
| CN110286302A (en) * | 2019-06-26 | 2019-09-27 | 全球能源互联网欧洲研究院 | The detection method and detection system of local discharge signal |
| CN211123116U (en) * | 2019-07-31 | 2020-07-28 | 上海宜商实业发展有限公司 | Partial discharge on-line monitoring system |
| CN111983383A (en) * | 2020-08-17 | 2020-11-24 | 海南电网有限责任公司信息通信分公司 | Power system fault first-aid repair method and system |
| CN112203249A (en) * | 2020-09-29 | 2021-01-08 | 国网四川省电力公司电力科学研究院 | Intelligent gateway system suitable for partial discharge of switch cabinet |
| CN212340302U (en) * | 2020-05-25 | 2021-01-12 | 浙江聚弘凯电气有限公司 | High-voltage ring main unit all-state sensing system |
| CN112738755A (en) * | 2020-12-31 | 2021-04-30 | 上海遨有信息技术有限公司 | Method for interaction between wireless communication module and sensor in field of power internet of things |
| CN213240394U (en) * | 2020-10-13 | 2021-05-18 | 苏州赛通自动化技术有限公司 | Transformer partial discharge on-site acquisition device |
| CN214011475U (en) * | 2020-12-04 | 2021-08-20 | 国网湖南省电力有限公司 | Main transformer comprehensive state monitoring device and transformer substation control device |
-
2021
- 2021-09-15 CN CN202111083053.0A patent/CN113805019A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070121238A (en) * | 2006-06-21 | 2007-12-27 | 한전케이디엔 주식회사 | Digital substation based on iec61850 measuring partial discharge |
| CN103984795A (en) * | 2014-04-04 | 2014-08-13 | 中国南方电网有限责任公司电网技术研究中心 | IEC (international electro-technical commission) 61850-based on-line partial discharge monitoring equipment communication simulation method |
| CN203965573U (en) * | 2014-07-01 | 2014-11-26 | 许昌许继昌南通信设备有限公司 | A kind of partial discharge monitoring system |
| CN104360248A (en) * | 2014-11-24 | 2015-02-18 | 国家电网公司 | Partial discharging monitoring method and device |
| KR20190003171A (en) * | 2017-06-30 | 2019-01-09 | 한국전력공사 | Apparatus and method for processing patial dischage event for data standard compatibility |
| CN208207131U (en) * | 2018-05-03 | 2018-12-07 | 广东电网有限责任公司 | distribution switch cabinet monitoring system |
| CN109856513A (en) * | 2019-02-25 | 2019-06-07 | 武汉大学 | A kind of gas monitoring method of XPLE cable local discharge or overheat |
| CN110286302A (en) * | 2019-06-26 | 2019-09-27 | 全球能源互联网欧洲研究院 | The detection method and detection system of local discharge signal |
| CN211123116U (en) * | 2019-07-31 | 2020-07-28 | 上海宜商实业发展有限公司 | Partial discharge on-line monitoring system |
| CN212340302U (en) * | 2020-05-25 | 2021-01-12 | 浙江聚弘凯电气有限公司 | High-voltage ring main unit all-state sensing system |
| CN111983383A (en) * | 2020-08-17 | 2020-11-24 | 海南电网有限责任公司信息通信分公司 | Power system fault first-aid repair method and system |
| CN112203249A (en) * | 2020-09-29 | 2021-01-08 | 国网四川省电力公司电力科学研究院 | Intelligent gateway system suitable for partial discharge of switch cabinet |
| CN213240394U (en) * | 2020-10-13 | 2021-05-18 | 苏州赛通自动化技术有限公司 | Transformer partial discharge on-site acquisition device |
| CN214011475U (en) * | 2020-12-04 | 2021-08-20 | 国网湖南省电力有限公司 | Main transformer comprehensive state monitoring device and transformer substation control device |
| CN112738755A (en) * | 2020-12-31 | 2021-04-30 | 上海遨有信息技术有限公司 | Method for interaction between wireless communication module and sensor in field of power internet of things |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804163A (en) * | 2021-09-15 | 2021-12-17 | 南方电网数字电网研究院有限公司 | Tower inclination detection method and device based on gateway, gateway equipment and medium |
| CN117761584A (en) * | 2024-02-22 | 2024-03-26 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
| CN117761584B (en) * | 2024-02-22 | 2024-05-17 | 保定华创电气有限公司 | Fault detection method and device for power transformer, electronic equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2016334120B2 (en) | Cloud based system and method for managing messages regarding cable test device operation | |
| EP3363156B1 (en) | Cloud based system and method for managing testing configurations for cable test devices | |
| CN113805019A (en) | Gateway-based partial discharge detection method and device, gateway equipment and medium | |
| US9137696B2 (en) | Communication quality measurement method, radio base station and mobile terminal, and radio communication system | |
| US9742644B2 (en) | Verification of connection of meters to network | |
| EP2660564B1 (en) | Verification of connection of meters to network | |
| CN102395200A (en) | Node positioning method in wireless sensor network and apparatus thereof | |
| CN106714189B (en) | Method and device for analyzing cell over coverage | |
| JP2018529266A (en) | Signal processing method and related apparatus | |
| CN104853378A (en) | Method, device and terminal for detecting access capability of WIFI network | |
| CN112702219B (en) | Internet of things network monitoring method, device, equipment and storage medium | |
| CN114173370A (en) | Fault positioning method, device, equipment and storage medium | |
| CN113655340B (en) | Transmission line lightning fault positioning method, system and medium based on voiceprint recognition | |
| CN113207146B (en) | Wireless communication network quality monitoring system and method | |
| CN212433949U (en) | Electric energy meter with working environment detection function | |
| EP2547141A1 (en) | Method for specifying area, wireless base station, mobile terminal, and wireless communication system | |
| CN111479290A (en) | L TE-based dynamic monitoring method, system, server and storage medium | |
| CN104349270A (en) | Small cell accessing method, apparatus and system | |
| CN113472457B (en) | Antenna anomaly detection method and device, computer equipment and storage medium | |
| CN114786255A (en) | Positioning method, device and equipment of power internet of things terminal and readable storage medium | |
| CN105898778B (en) | A kind of communication blind district confirmation method, communication blind district confirm device | |
| JP2015070620A (en) | Method and device for detecting presence of rogue femtocell in network, and computer readable storage medium | |
| CN114113903A (en) | System and method for positioning line loss of distribution network line | |
| CN104853377A (en) | Method and device for detecting access capability of WIFI network | |
| CN106612278B (en) | Data validity verification method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230410 Address after: Full Floor 14, Unit 3, Building 2, No. 11, Middle Spectra Road, Huangpu District, Guangzhou, Guangdong 510700 Applicant after: China Southern Power Grid Digital Grid Technology (Guangdong) Co.,Ltd. Address before: Room 86, room 406, No.1, Yichuang street, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou City, Guangdong Province Applicant before: Southern Power Grid Digital Grid Research Institute Co.,Ltd. |