KR20220030854A - Collecting method for power line status using IoT and system thereof - Google Patents

Abstract

The present invention relates to a method and a system for measuring, collecting, and analyzing power information on transmission and distribution lines using the IoT. According to the present invention, a power information analysis system includes: a power information collection device repeatedly installed for each predetermined section on overhead lines of transmission and distribution lines; a gateway connected to the power information collection device through an ad-hoc network; and an analysis server connected to the gateway through a commercial communication network or an in-house communication network of an electric power company. The power information analysis system measures, collects, and analyzes the load current of each section on the transmission or distribution line installed over a long distance. The power information collection devices repeatedly installed in the predetermined sections are capable of information exchange by IoT-based communication. Information transferred to the power information collection device can be transferred to the gateway with a time interval, and thus information can be transferred on the entire long-distance transmission or overhead line even by the short-reach IoT-based communication.

Description

Transmission and distribution power information collection method and system using the Internet of Things {Collecting method for power line status using IoT and system thereof}

The present invention relates to a method and system for measuring, collecting, and analyzing power information on transmission and distribution lines using the Internet of Things. More specifically, a power information collecting device repeatedly installed for each predetermined section on an overhead power line of a transmission and distribution line, a gateway connected to the power information collecting device through an ad-hoc network, and a commercial communication network or a power company with the gateway A power information analysis system including an analysis server connected through an in-house communication network relates to a method and system for measuring, collecting, and analyzing load current for each section of a transmission line or distribution line erected over a long distance, and the system, which is repeated for each section An IoT communication method with a short reach by allowing the installed power information collection devices to exchange information with each other in a communication method applying IoT technology, and to transfer the information received by themselves to the gateway with a time difference Even if it is, information on the entire long-distance transmission line or overhead line can be transmitted.

A transmission line is a line for supplying power from a power plant or substation to a relay substation or a distribution substation, etc., and a distribution line is a means for supplying power from the substation to consumers. Transmission and distribution lines are formed over long distances, and they are continuously increasing due to the increase in power demand and the expansion of power supply sources following the development of residential land and industrial complexes. Transmission and distribution networks are getting longer and expanded, and they are becoming more and more complex as demand increases. Furthermore, in recent years, as distributed power facilities such as solar power generation and wind power generation are continuously increasing, load and power are being mixed and operated, unlike the existing power system where only one-way supply is provided. supplied in the form of In other words, in the current electric power system, unlike the traditional electric power system, electric current flows in both directions, and the supply chain is changing into an increasingly complex aspect.

On the other hand, from the perspective of managing the power system, for the efficient management of the transmission and distribution network, the flow direction of the load current and power current flowing through the transmission and distribution network must be grasped in real time. Although it was possible to understand sufficiently only with the measuring equipment installed in the power supply facility, in the current situation where the bidirectional power current due to distributed power is generated everywhere, there is a limit to the measuring equipment of the power supply facility alone. The need to systematically manage the power system while monitoring the distribution of load current across the

To this end, a measuring device connected to a wireless communication network or Internet of Things network is attached over the entire section of the transmission line or distribution line, and power information measured by the measuring device is collected and analyzed, while big data on the collected power information Attempts have been made to analyze the transmission and distribution network by applying cutting-edge technologies such as processing technology and AI, and to efficiently manage it through this. In addition, transmission and distribution lines installed over long distances have a long and wide range, which makes direct monitoring by humans impossible at all times. Systems and devices are being developed.

As a part of these attempts, there is Korean Patent Registration No. 10-1063293 (July 7, 2011) as a prior art applied for a patent in this field, which relates to an overhead power transmission line monitoring system, and uses a spacer damper with a built-in detection sensor. A technology is disclosed that detects the presence or absence of an abnormality in an overhead power transmission line, converts it into a digital signal, and then converts it into a wireless signal and transmits the signal. In addition, Korean Patent Laid-Open Patent No. 10-2020-0041473 (20-2020.4.22.) relates to an overhead power transmission line monitoring system and method for remotely monitoring and diagnosing an overhead power transmission line in real time, and is a low-power-based long-distance wireless communication technology. A technology for transmitting line information using And Korean Patent Registration No. 10-2117344 (Jan. 1, 2020) relates to a leakage monitoring system for overhead distribution lines in mountainous areas, and monitors leakage or physical shape changes and power status of overhead distribution lines in mountainous areas, and reports the monitoring results. A technology for mounting in a wireless network is disclosed.

However, since these conventional technologies generally use commercialized wireless communication technology, each information collection device subscribes to a commercial wireless communication network such as LTE or a commercial Internet of Things network such as LoRa to perform data communication, or, if not, separate Since a wireless communication network needs to be built, when a power information collection device needs to be installed over the transmission and distribution lines, the burden of network use costs is too high, so it is difficult to realize it. In addition, there is a problem in that it is fundamentally impossible to use the commercial communication network in places such as mountainous terrain where it is difficult to use the commercial communication network and it is expensive to expand the network infrastructure. Of course, when using the Internet of Things by Low-Power Wide Area Network (LPWA), the cost burden can be reduced, but it is not a fundamental solution, and the available infrastructure is not covered nationwide. However, there have been many difficulties in applying it in transmission and distribution lines formed over long distances or in mountainous terrain, since there are many restrictions on its reach.

Korean Patent Registration No. 10-1063293 (2011.9.7.) Korean Patent Publication No. 10-2020-0041473 (20-2020.4.22.) Korean Patent Registration No. 10-2117344 (2020.6.1.)

In order to solve the above problems, the present invention provides a method and system for measuring, collecting and analyzing power information of a transmission/distribution line, capable of collecting power information for all sections of a long-distance transmission/distribution line for each section using the Internet of Things technology. intended to provide

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission and distribution line using IoT-based technology even in a section not covered by a commercial wireless communication network or a commercial communication network related to the Internet of Things. do it with

Another object of the present invention is to provide a method and system for measuring and collecting power information at a desired location no matter how long the transmission/distribution line is, and transmitting it to a remote server for analysis.

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission and distribution line, which can minimize the use of a commercial communication network.

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission/distribution line, capable of immediately determining the direction of a power current even if the direction of the power current changes frequently.

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of transmission and distribution lines, in which an initial setting process can be automatically performed through communication with an analysis server after installation of a power information collection device do.

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission and distribution line, which can sufficiently transmit all power information even when a communication method with a small amount of data that can be transmitted at the same time is used .

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission and distribution line, in which it is possible to construct a long-distance communication network that can cover the entire section of the transmission and distribution line even when a communication method with a short transmission distance is used. aim to

Another object of the present invention is to measure, collect and analyze power information of a transmission/distribution line, enabling information transmission between other power information collecting devices even if there is some communication failure due to a failure in the power information collecting device due to a failure in the middle of the line It aims to provide a method and system.

Another object of the present invention is to provide a method and system for measuring, collecting and analyzing power information of a transmission/distribution line, in which it is possible to measure load power consumed in a specific area after determining a specific area.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

The present invention, which was devised to achieve the above object, includes a power information collecting device installed for each phase repeatedly by a certain section on an overhead electric line, a gateway connected to the power information collecting device through an ad-hoc network, and the A power information analysis system including a gateway and an analysis server connected through a commercial communication network or an internal communication network is a method for measuring and collecting load current for each section of a transmission line or distribution line erected over a long distance, wherein each of the power information collection devices includes a current transformer, a measuring means, a storage means, a wireless transmitting means and a wireless receiving means, and the measurement time and the transmission time are stored in the storage means, and when the measurement time arrives, the power information collecting device performs the processing measuring a value of a load current flowing through an electric wire to generate power information including the value, and then transmitting the power information through the wireless transmission means when the transmission time arrives; when the power information collecting device receives power information transmitted by another power information collecting device through the wireless receiving means, transmitting it as second power information through the wireless transmitting means; and when the gateway receives the power information and the second power information transmitted by the power information collecting device, transmitting the power information and the second power information to the analysis server; The measurement time is the same in all of the power information collection devices, but is a time that is repeated at regular time intervals, and the transmission time is a time between each of the measurement times, characterized in that it is different in each of the power information collection devices, It is preferable to use the Internet of Things (IoT) as a method for collecting power transmission and distribution power information.

In addition, the present invention, in addition to the above features, each of the power information collecting device further includes a GPS receiving means, the storage means further includes unique identification information and routing information for the power information collecting device, The power information further includes a time at which the load current value is measured, the unique identification information, and the routing information, and the power information collecting device includes: - Using the GPS receiving means, the measurement time and the transmission time Determining whether or not the load current value is measured using the current transformer and the measuring means, and in the step of transmitting the second power information by the power information collecting device, the power information collecting device includes the power information Only when the routing information included in is the same as its own identification information, it is used as the second power information, and after changing the routing information to its own routing information, the second power information is transmitted, and the routing information is , it is preferable to use a transmission/distribution power information collection method using the Internet of Things, characterized in that it is unique identification information of a power information collection device located closest to the gateway from each power information collection device.

In addition to all of the above features, the storage means further stores line identification information for the transmission line or the distribution line and phase identification information for each of the overhead wires constituting the overhead wire, the power information collecting device A, - Measuring location information on the point where the user is located by using the GPS receiving means; - generating initial information including the unique identification information, the location information, the line identification information, and the phase identification information, and transmitting the initial information at regular time intervals through the wireless transmission means; - Receiving second initial information that is initial information transmitted by another power information collecting device through the wireless receiving means; - when the line identification information and the phase identification information included in the second initial information are the same as its own line identification information and phase identification information, transmitting the second initial information through the wireless transmitting means; transmitting, by the gateway, the initial information and the second initial information to the analysis server when receiving the initial information and the second initial information transmitted from the power information collecting device; When the analysis server receives both the initial information and the second initial information, the location information, the line identification information, and the phase identification information are used to correspond to the unique identification information of each of the power information collection devices. generating routing information, the measurement time, and the transmission time, and transmitting it to the gateway as setting information; when the gateway receives the setting information, transmitting the setting information to the power information collecting device; When the power information collecting device receives the setting information through the wireless receiving means, the routing information corresponding to its own identification number, the measurement time and the transmission time are found in the setting information, and its routing storing the information, the measurement time and the transmission time in the storage means; - transmitting the setting information through the wireless transmitting means; - Stopping the transmission of the initial information and the second initial information; it is also preferable to use the transmission and distribution power information collection method using the Internet of Things, characterized in that it further comprises.

In addition to these features, the storage means further stores preliminary routing information, and the preliminary routing information is unique identification information of a power information collection device located in a position close to the top of the car toward the gateway from each power information collection device, In the step of transmitting the second power information through the wireless transmitting means, the power information collecting device, - Among the second power information received through the wireless receiving means, the routing information is the same as its own identification information When there is no second power information, the preliminary routing information changes the routing information and the preliminary routing information to its own routing information and preliminary routing information with respect to second power information such as its own identification information, and then the wireless transmission It is also preferable to use a method for collecting power transmission and distribution power information using the Internet of Things, characterized in that the transmission is performed through means.

In addition to all of the above-described features, the analysis server compares the power information transmitted by each of the power information collection devices to determine the power current direction of the transmission line or the distribution line; further comprising, the Transmission and distribution power information using the Internet of Things, characterized in that the direction of power current is determined to be directed from the power information collecting device having the large load current value to the power information collecting device having the small load current value among adjacent power information collecting devices It is also preferable to set it as a collection method.

And in addition to these features, the power information analysis system further includes an analyzer terminal, the analyzer terminal, comprising the steps of receiving the input of a specific area to measure the load power and transmitting it to the analysis server; specifying, by the analysis server, the transmission line or the distribution line passing through the boundary line of the specific area as an analysis target line; - specifying, as an analysis target device, a power information collecting device located outside the specific area and closest to the boundary line among the power information collecting devices on the analysis target line; and - analyzing the load power for the specific region using the power current direction at the point where the analysis target device is located and the power information transmitted by the analysis target device, and transmitting it to the analyzer terminal; It is also preferable to measure, collect and analyze power information of a transmission/distribution line using the Internet of Things, further comprising It is also possible to use a method for collecting power transmission and distribution power information using the Internet of Things, characterized in that all the calculated power values are added, but when the direction of the power current goes out of the specific area, it is added as a negative value.

In addition, the present invention is a power information analysis system that measures, collects and analyzes the load current for each section of a transmission line or distribution line erected over a long distance, a power information collecting device repeatedly installed for each section on an overhead line, the above A power information collection device and a gateway connected through an ad-hoc network, and an analysis server connected with the gateway through a commercial communication network or an internal communication network, wherein each of the power information collection devices includes: a current transformer, a measuring means, and a GPS receiving means , a storage means, a wireless transmission means and a wireless reception means, wherein the storage means stores unique identification information for the power information collection device, routing information, measurement time and transmission time, - the GPS receiving means receives It is determined whether the measurement time and the transmission time have arrived by using a GPS signal, and - when the measurement time arrives, the load current flowing through the overhead line is measured using the current transformer and the measuring means to measure the value of the load. After generating power information including the current value, the time at which the load current value is measured, the unique identification information and the routing information, when the transmission time arrives, the power information is transmitted through the wireless transmission means, - Among the cases of receiving second power information, which is power information transmitted by another power information collecting device, through the wireless receiving means, when routing information included in the second power information is the same as its own identification information, the second power transmitting the second power information through the wireless transmitting means after changing the routing information of the information to its own routing information; The gateway receives the power information and the second power information transmitted by the power information collection device and transmits the received information to the analysis server; The measurement time is the same in all of the power information collection devices, but is a time that is repeated at regular time intervals, and the transmission time is a time between each of the measurement times and is different in each of the power information collection devices, and the routing information is , it is preferable to use a transmission/distribution power information collection system using the Internet of Things, characterized in that it is the unique identification information of the power information collection device located closest to the gateway from each power information collection device.

As described above, the 'method and system for measuring, collecting and analyzing power information of transmission and distribution lines using the Internet of Things' according to the present invention includes a power information collecting device, a power information collecting device and A power information analysis system including a gateway and an analysis server connected through an ad-hoc network and a gateway and an analysis server connected through a commercial or internal communication network measures and collects load current for each section of a transmission line or distribution line erected over a long distance Therefore, there is an effect that power information can be collected for each section of a long-distance transmission and distribution line.

The present invention also links to the gateway in such a way that each power information collecting device transmits its own power information to the power information collecting device on the gateway side, and the nearby power information collecting device then transmits it to the nearby power information collecting device Therefore, even if there is no wireless communication network or commercial communication network related to the Internet of Things, the power information for each section of the transmission and distribution line can be measured and transmitted to the analysis server. It has the effect of being able to transmit anything. In addition, even if a communication method with a short transmission distance is used, there is an effect that it is possible to construct a long-distance communication network that can cover the entire section of the transmission and distribution line. In addition, it is transmitted to the gateway through signal transmission between the power information collection devices, and since the commercial communication network is only connected to the gateway, there is an effect of minimizing the use of the commercial communication network.

In the present invention, even if the power information is measured at the same time, the signal transmission between the power information collecting devices is performed at different times in a time-division method, so even if a communication method with a small amount of data that can be transmitted at the same time is used, a lot of power information can be transmitted. there is an effect

The present invention can also use the time information of the gps reception signal to unify the power information collection time in all power information collection devices at the same time, so that the load current value and the power current flow in each line section at the same time can be grasped. there is an effect

The present invention also has the effect of accurately determining the direction of the power current even if the direction of the power current changes frequently because the direction of the power current can be determined through the comparison of the measured power information.

According to the present invention, since the setting process is automated using GPS information, line identification information, and phase identification information after installation of the power information collecting device, there is an effect of reducing the cost and time required for installation.

Since the present invention also uses preliminary routing information together with routing information, even if a power information collecting device with a communication failure occurs in the middle, information can be transmitted between other power information collecting devices, so it is possible to minimize the failure due to information collection. It works.

According to the present invention, since it is possible to measure the load power consumed in a specific area after determining an arbitrary specific area with the analyzer terminal, it is possible to easily measure the load power for an administrative district unit or an arbitrary area.

1 is a conceptual diagram of an overhead power transmission line (a) and an overhead distribution line (b) to which the present invention is applied.
2 is a conceptual diagram of an apparatus for collecting power information used in the present invention.
3 is an overall configuration diagram of a power information analysis system according to the present invention.
4 is an execution flowchart of a process of measuring, collecting, and analyzing power information in the present invention.
5 is a diagram illustrating a process in which power information is transmitted in the present invention for each time period.
6 is a flowchart of a process for automatically setting power information collecting devices in the present invention.
7 is a view for explaining a method of determining the direction of a power current by using power information in the present invention.
8 is a view for explaining a method of measuring load power consumed in a specific region in the present invention.

Hereinafter, the present invention will be described in detail so that the above-described objects and features become clear, and accordingly, those skilled in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In addition, in the description of the present invention, if it is determined that the detailed description of the known technology may unnecessarily obscure the gist of the present invention as it is already well known in the technical field among the known technologies related to the present invention, the detailed description to be omitted.

In addition, the terms used in the present invention have been selected as widely used general terms as possible, but in specific cases, there are also terms arbitrarily selected by the applicant. It is intended to clarify that the present invention should be understood as the meaning of the term, not the name. Terms used in the description of the embodiments are only used to describe specific embodiments, and are not intended to limit the embodiments. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Embodiments may be modified in various forms and may have various additional embodiments, wherein specific embodiments are shown in the drawings and related detailed descriptions are given. However, this is not intended to limit the embodiments to specific forms, and should be understood to include all changes or equivalents or substitutes included in the spirit and scope of the embodiments.

In the description of various embodiments, expressions such as “first”, “second”, “first” or “second” may modify various components of the embodiments, but do not limit the corresponding components. For example, the above expressions do not limit the order and/or importance of corresponding components. The above expressions may be used to distinguish one component from another.

Hereinafter, the present invention will be described with reference to the accompanying drawings. 1 is a conceptual diagram of an overhead power transmission line (FIG. 1a) and an overhead distribution line (FIG. 1B) to which the 'method and system for measuring, collecting and analyzing power information of a transmission/distribution line using the Internet of Things' according to the present invention is applied. As shown in FIG. 1A , the present invention has a power information collecting device 100 capable of measuring, collecting, and transmitting the load current for each phase on an overhead power transmission line composed of a transmission tower 20 and an overhead wire 30 It is desirable to have it installed repeatedly in a certain section. Here, it is preferable that the predetermined section be installed for each span in which each of the transmission tower 20 is installed. However, in the case of using a communication method that can cover a long distance, it is also possible to install it past several transmission towers 20 in consideration of the communication reach. However, the present invention makes it possible to measure the distribution of load current across the transmission line, and in the case of the transmission line, due to the ferranti effect due to the capacitance value with the ground, the current loss in the overhead line is large, so this phenomenon is accurately identified In order to do this, it is preferable to install the transmission tower 20 for each section in which each is installed, as much as possible, in preparation for a case where there is a branch line in the middle.

And in the case of an overhead distribution line, as shown in FIG. 1b , on an overhead distribution line composed of a power pole 20 and an overhead wire 30, a power information collecting device 100 capable of measuring, collecting, and transmitting the load current for each phase ) is preferably installed repeatedly for each specific section. Here, it is preferable that the predetermined section be installed for each span in which each of the power poles 20 is installed, similarly to the transmission line. However, in the case of using a communication method that can cover a long-distance section, it is also possible to install it past several power poles 20 in consideration of the communication reach. However, the present invention makes it possible to measure the load current distribution across the distribution line, and in the case of a distribution line, there are many branches to consumers or other distribution lines in the middle. In order to accurately determine the direction of the poles 20, it is preferable to install them for each section in which each of the electric poles 20 is installed.

2 is a conceptual diagram of the power information collecting device 100 described above. Each of the power information collecting device 100 includes a current transformer 110 , a measuring unit 120 , a GPS receiving unit 130 , a storage unit 140 , a wireless transmitting unit 150 , and a wireless receiving unit 160 . It is preferable to do this, and it is more preferable to further include a power supply unit 170 capable of supplying power to them and a control unit 180 for controlling their operation. As shown in FIG. 2 , the current transformer 110 is a coil surrounding the conductor of the overhead wire line 30 and is preferably used as a means for generating an induced current from the current flowing through the overhead wire line 30 . In the case of FIG. 2A, a case in which a corridor conductor (four conductors) is used in an ultra-high voltage transmission line is shown. In this case, it is preferable that the current transformer 110 surrounds each small conductor. And Figure 2b is an example of the power information collection device 100 used in a distribution line or extra-high voltage transmission line using a single conductor. It can be seen that both FIGS. 2A and 2B include the current transformer 110 formed of a coil surrounding the conductor of the overhead electric line 30 . And the remaining components, the measuring means 120, the GPS receiving means 130, the storage means 140, the wireless transmission means 150, the wireless reception means 160, the power supply means 170 and the control means 180 is preferably accommodated in the storage space 101 connected to the current transformer 110 .

The measuring means 120 measures the current value induced by the current transformer 110 and converts it into a digital value by using it as a load current value, and the control means 180 converts the load current value converted into a digital value into the digital value. It is preferable to store it in the storage means 140 together with the measurement time. When the load current value and the measurement time are stored in the storage means 140, the first recorded data is overwritten when the storage capacity limit is reached in consideration of the limit of the storage capacity of the storage means 140. It is also desirable to

The GPS receiving means 130 receives a GPS signal and generates a GPS coordinate value of a point where the power information collection device 100 is located, and the control means 180 converts the GPS coordinate value to the power information collection device ( 100) is preferably stored in the storage means 140 as the location information on the location. And the GPS receiving means 130 provides the time information included in the GPS signal to the control means 180, and the control means 180 utilizes the GPS time information to determine the measurement time and It is determined whether the transmission time of the wireless transmitting means 150 has arrived.

And it is preferable to store the unique identification information, routing information, measurement time and transmission time for the power information collecting device 100 in the storage means 140 . Here, the unique identification information is identification information given differently to each of the power information collecting device 100, and by making it essential to be included in the information it generates, the receiving side that receives the information generates where it is through the unique identification information It is to determine whether the information has been The routing information is included in the information transmitted through the wireless transmitting means 150, and when the receiving side receives the information, it is information that can determine whether the received information is information to be processed by itself, It is preferable to receive and process the information as unique identification information for the power information collection device 100 to be processed. That is, when the power information collection device 100 receives the information transmitted by the other power information collection device 100, the routing information included in the information is the same as its own identification information, the information is transmitted to itself It is to make judgments based on the information to be processed. On the other hand, the storage means 140 is preferably a semiconductor device in consideration of weight or power consumption.

The wireless transmitting means 150 and the wireless receiving means 160 exchange information between the power information collecting device 100 or between the power information collecting device 100 and the gateway 200 (refer to FIG. 3 ). It is preferable to connect through an ad-hoc network rather than a commercial wireless communication network or commercial Internet of Things network as a communication means that can be used. It is also desirable to use the Internet of Things communication method using

Even if a battery is used as the power supply means 170, it may be possible for several years to 10 years if a low-power communication method is used. Since it is possible to do more than that, it is more preferable to use the current induced in the current transformer as the power supply means 170 directly or to charge the battery using the current.

Preferably, the control means 180 controls the overall configuration included in the power information collecting device 100, for example, determining whether a measurement time for collecting power information such as load current has arrived and measuring execution It is to be in charge of control of power, generation and change of power information to be transmitted, judgment of received information, and control of transmitted information.

* On the other hand, FIG. 3 shows the overall configuration of the power information analysis system 10 to which the 'method of measuring, collecting and analyzing power information of transmission and distribution lines using the Internet of Things' according to the present invention can be applied. As shown in FIG. 3 , the power information analysis system 10 to which the present invention is applied preferably includes the gateway 200 . And it is preferable that the gateway 200 is connected to the power information collecting device 100 through an ad-hoc wireless network. However, it is not necessary that all of the power information collecting device 100 installed over the transmission line or the distribution line and the gateway 200 be connected, and in the order of being closer to the gateway 200 among the power information collecting devices 100 It is desirable to be connected with only one or three devices. As shown in FIG. 3 , power information transmission in the power information analysis system 10 to which the present invention is applied is transmitted from the power information collecting device 100g installed farthest from the gateway 200 to the power installed closest to the gateway 200 . Since it passes through all the power information collecting devices 100 to the information collecting device 100a in turn and is transmitted to the gateway 200 (refer to the blue arrow), the gateway 200 causes all of the power information collecting devices 100 to There is no need to communicate with Accordingly, even if the communication reachable distance between the gateway 200 and the power information collection device 100 is short, if the longest span of the span between the transmission tower 20 or the power distribution pole 20 can be covered, no matter how long the transmission line Even in a furnace or distribution line, power information can be collected over the entire section. However, for efficient transmission and collection of the power information, and in terms of management efficiency such as maintenance, the gateway 200 is a transmission line or a distribution line at a certain distance in the entire section or a constant of the power information collection device 100 . It is more preferable to install it wherever possible to connect to a commercial communication network or an internal communication network at intervals within the number. Accordingly, several gateways 200 may be installed for each one transmission line or distribution line.

And it is preferable to include the analysis server 300 in the power information analysis system 10 to which the present invention is applied, and the analysis server 300 is connected to the gateway 200 through a commercial communication network or an internal communication network. Preferably, it is more preferable to allow the gateway 200 to analyze the power information collected from the power information collecting devices 100 . Although only one gateway 200 is shown in FIG. 3 for convenience, it is preferable that all gateways 200 installed in the entire transmission line or distribution line be connected to the analysis server 300 . In addition, it is more preferable that each gateway 200 installed in each of a plurality of transmission lines or distribution lines is connected to each other.

4 is a flowchart showing the execution of the 'method for measuring, collecting and analyzing power information of a transmission/distribution line using the Internet of Things' according to the present invention. Hereinafter, the present invention will be described with reference to FIG. 4 . As shown in FIG. 4 , it is preferable that all of the power information collecting devices 100 perform a step of determining whether a predetermined measurement time has arrived by using the GPS signal received from the GPS receiving means (s110). Here, the measurement time is the same in all of the power information collecting device 100, and it is preferable to set the time to be repeated at regular time intervals. When the measurement time t0 arrives, all of the power information collecting device 100 measures the load current for each phase of the transmission line or distribution line using the current transformer 110 and the measuring means 120. It is preferable to perform the steps simultaneously (s120). And after the measurement of the load current is completed, it is preferable to perform the step of generating the power information including the load current value, the measurement time of the load current value, the unique identification information, and the routing information (s130) ), it is also preferable to temporarily store the power information generated at this time in the storage means 140 . And, it is preferable that the routing information is unique identification information of the power information collecting device 100 located closest to the gateway 200 of the power information collecting device 100 . For example, it is preferable that the routing information included in the power information generated by the last power information collecting device 100d include unique identification information of 100c, which is a power information collecting device located adjacent to the gateway 200 .

After all of the power information collecting devices 100 measure the load current and generate the power information, all of the power information collecting devices 100, the time of the GPS signal received by the GPS receiving means 130 It is preferable to use the information to determine whether or not the own transmission time tn, which is the time to transmit the own power information generated in step s130, has arrived. Accordingly, the power information collecting device 100d located at the end of the power information collecting device 100 determines whether its transmission time t1, which is the time to transmit its own power information d generated in step s130, has arrived. It is determined (s140d), and when the own transmission time t1 arrives, it is preferable to transmit the own power information d using the wireless transmitting means 150 . At this time, it is preferable that the routing information included in the own power information (d) is unique identification information of the power information collecting device 100c located closest to the gateway 200 from the user. And after the transmission of the own power information (d) is finished, it is preferable to return to the step s110d (s200d) and repeat the above process while determining whether the next measurement time has arrived.

On the other hand, all of the power information collecting device 100 is the power generated and transmitted by another power information collecting device 100 or received from another power information collecting device 100 and retransmitted through the wireless receiving means 160 . It is desirable to receive information, which is called second power information in the present invention. When the routing information included in the second power information received through the wireless receiving means 160 is the same as its own identification information, the power information collection device 100 transmits the routing information of the second power information to itself. It is preferable to perform the step (s160) of transmitting the second power information through the wireless transmitting means 150 after changing to the routing information of . Therefore, the power information collecting device 100c that has received the power information transmitted from the other various power information collecting devices 100, including the power information d transmitted from the last power information collecting device 100d, is the Routing information finds the same power information as its own identification number, that is, the power information (d) transmitted from the power information collecting device 100d located at the end, and uses it as the second power information (d), and the second power After changing the routing information included in the information (d) to its own routing information, it is preferable to perform the step (s160d) of transmitting the second power information through the wireless transmitting means (150). Here, the routing information of the power information collecting device 100c will be unique identification information of the power information collecting device 100b adjacent to the gateway 200 .

And the power information collecting device 100b receiving the second power information (d), which is the power information transmitted by the power information collecting device 100c, includes routing information included in the received power information with its own identification information and In the same case, transmitting the second power information through the wireless transmitting means 150 after changing the routing information included in the second power information (d) to its own routing information in the same manner as the method described above (s161d) is preferably performed. Here, the routing information of the power information collecting device 100b will be unique identification information of the power information collecting device 100a adjacent to the gateway 200 . And the power information collection device 100a, which has received the second power information (d), which is the power information transmitted by the power information collection device 100b, the routing information included in the received power information is its own identification information and, it is preferable to transmit it to the gateway 200 (s162d).

On the other hand, it is preferable that the power information collection device 100c check whether the transmission time t2 to transmit the power information c generated by it has arrived while the process of transmitting the second power information is performed ( s140c), the transmission time When the transmission time t2 arrives, it transmits its own power information c through the wireless transmitting means 150, and returns to step s110c (s200c) whether the next measurement time has arrived. It is desirable to repeat the above process after waiting. In addition, it is preferable that the power information collecting device 100b that has received the power information c of the power information collecting device 100c generates and transmits the second power information c through the above-described method. In this way, the power information collecting device 100 transmits the second power information transmitted by another power information collecting device 100 toward the gateway 200 while transmitting the power information generated by them.

And when the gateway 200 receives the power information and the second power information transmitted by the power information collecting devices 100 , the power information and the second power information are transmitted to the analysis server 300 . It is preferable to perform the transmitting step (s163d, s162c, s161b, s151), and the analysis server 300 uses the power information and the second power information for each section of the transmission line or the distribution line It is preferable to perform the step (s190) of analyzing the load current distribution.

5 shows the process of transmitting the power information by time in the process of performing the 'method of measuring, collecting and analyzing power information of a transmission/distribution line using the Internet of Things' according to the present invention. As shown in FIG. 5 , when the measurement time t0 comes, all of the power information collecting devices 100 simultaneously measure the load current to generate power information, and the transmission time t1, which is the first time after t0, is reached. First, the power information collecting device 100d transmits its own power information, and the power information collecting device 100c that receives it changes the routing information and transmits it to 100b, the power information collecting device 100b changes the routing information again to 100a and the power information collecting device 100a transmits it back to the gateway 200 , so that the power information of the power information collecting device 100d can reach the gateway 200 .

And when the transmission time t2 comes, the power information collecting device 100c transmits its own power information, and when the receiving power information collecting device 100b changes the routing information and transmits it to 100a, the power information collecting device 100a sends it back to the gateway By transmitting to 200 , the power information of the power information collecting device 100c can reach the gateway 200 . Also, when the transmission time t3 is reached, the power information collecting device 100b transmits its own power information, and the power information collecting device 100a receiving it transmits it to the gateway 200, so that the power information of the power information collecting device 100b is transmitted to the gateway (200) can be reached. And finally, when the transmission time t4 is reached, the power information collecting device 100a transmits its power information to the gateway 200, and the power information collecting device 100a transmits its power information to the gateway 200, and After that, wait for the new measurement time t0' to arrive and repeat the above process.

Therefore, in the present invention, the measurement time is the same in all of the power information collecting device 100, but it is preferable to set it as a time that is repeated at regular time intervals, and the transmission time is different from each other in the power information collecting device 100 However, it is preferable to set it as a time between each of the above measurement times. For example, if there are 100 power information collecting devices 100 to transmit a signal to one gateway 200, the measurement time is a time that is repeated every 1 second, and all of the power information collecting devices 100 When the transmission time is set at 10 ms intervals and every 1 second + 10 ms is given in the order in which the power information collection device 100 is arranged, the load current can be measured at every 1 second interval, 100 All of the load current values transmitted by the power information collecting apparatus 100 every 1 second may be sequentially transmitted to the gateway 200 . In the present invention, since the transmission time in each of the power information collecting apparatus 100 is different between each of the measurement times as described above, even if a communication method in which the amount of data that can be transmitted is not large is used, all power information is smoothly transmitted. be able to transmit.

Meanwhile, in FIG. 6 , after installing the power information analysis system 10 in 'Method for measuring, collecting and analyzing power information of transmission and distribution lines using the Internet of Things' according to the present invention, the actual operation steps (s110 to s200 steps described above) ), the process of automatically setting the power information collecting apparatus 100 is shown before. That is, after installing the power information collecting devices 100, the analysis server 300 automatically determines the order in which the power information collecting devices 100 are arranged, and according to the result of the understanding, the power information collecting device 100 ) automatically generates the routing information to be applied to each of the measurement time and the transmission time and sends it to the power information collecting devices 100, the power information collecting devices 100 are the routing information to be applied to them; It is to find the measurement time and the transmission time, store them in their own storage means 140, and apply them to measurement, collection and transmission of power information. Since the present invention has such a feature, it is automatically set without inputting setting information at the site in the process of installing the power information collection devices 100, and accordingly, the power information analysis system 10 installation work It has the effect of significantly saving time and cost.

Hereinafter, a setting process of the power information collecting apparatus 100 will be described with reference to FIG. 6 . The setting process described below is a process performed before steps s110 to s200 described above, and is a process performed immediately after the installation work for the power information analysis system 10 is completed. As described above, in the power information analysis system 10 to which the present invention is applied, each phase of the overhead wire 30 constituting the transmission line or the distribution line in the power information collection device 100 It is recommended to install each. And it is preferable that the storage means 140 further store line identification information for identifying a line for the transmission line or the distribution line and phase identification information for each of the overhead wires 30 . It is preferable that the line identification information be information that can identify information (eg, Asan-Hwaseong T/L, etc.) that names each transmission/distribution line used within a power company. In addition, in the analysis server 300, the transmission line or the distribution line for each section, length, and the length of each span, including track information including the length, etc. and geographic information on the point at which the power transmission line or distribution line passes. desirable.

In order to set the power information collecting devices 100, first, as shown in FIG. 6, all of the power information collecting devices 100 use the GPS receiving means 130 to locate their own location. It is preferable to perform the step (s310) of measuring the information. After performing the step s310, all of the power information collecting device 100 generates initial information including its own identification information, its own location information, its own line identification information, and its own phase identification information. It is preferable to perform the step (s320) of transmitting at regular time intervals through the wireless transmitting means (150). It is more preferable that the initial information transmission in step s320 is transmitted at different times so that all the power information collecting devices 100 are slightly different from each other rather than being performed at the same time. This is to prevent traffic concentration when initial information of all power information collecting devices 100 is transmitted at the same time. That is, it is preferable to transmit the initial information of each of the power information collecting devices 100 with a random time difference. For this purpose, each of the power information collecting devices 100 applies a random number to determine the initial information transmission time. It is also desirable to have different random transmission times.

And when each of the power information collecting device 100 receives the initial information transmitted by the other power information collecting device 100 through the wireless receiving means 160, a step (s330) of using this as the second initial information After performing, when the line identification information and the phase identification information included in the second initial information are the same as their own line identification information and phase identification information (s340), the second initial information is transmitted to the wireless transmitting means 150 It is preferable to perform the step of transmitting (s350) through the. Each of the power information collecting devices 100 receives and transmits the initial information or the second initial information sent from the other power information collecting devices 100 so that it is transmitted to the gateway 200 . However, this is not done for all initial information and second initial information, and by transmitting only the initial information and the second initial information in which the line identification information and the phase identification information are the same, each initial information is transmitted to its own gateway 200 will be able to find

On the other hand, the gateway 200, when receiving the initial information and the second initial information transmitted by the power information collecting device 100, the initial information and the second initial information to the analysis server (300) It is preferable to perform the transmitting steps (s321, s351). And when the analysis server 300 receives both the initial information and the second initial information in steps s321 and s351, the power information using the location information, the line identification information, and the phase identification information It is preferable to perform the step (s360) of generating setting information for each collection device 100 and transmitting it to the gateway 200 . Preferably, the setting information includes the routing information corresponding to the unique identification information of each of the power information collecting device 100, the measurement time, and the transmission time. The generation of the setting information is generated by the analysis server 300, line information for each transmission line or distribution line stored in the analysis server 300, and geographic information and the power information collection device 100. After calculating the distance from the gateway 200 to each of the power information collecting devices 100 using the measured and sent location information, according to the distance order, It is desirable to understand the arrangement order. Accordingly, the analysis server 300 will be able to grasp the arrangement order of the identification information for each of the power information collecting device 100 installed on the transmission line or the distribution line.

And the analysis server 300, based on each of the power information collecting device 100 using the unique identification information arrangement order of the power information collecting device 100 identified above, the power at the gateway 200 side Each of the unique identification information for the information collection device 100 is given as the routing information, and the measurement time is the number of the power information collection device 100 and the period required for measurement (eg, every 1 second on the hour or every 1 second) and every 0.5 second, etc.) are appropriately set and given, and the transmission time is given after determining a time interval in consideration of the measurement time and the number of power information collecting devices 100, and then each power information collecting device It is more preferable to assign each transmission time according to the arrangement order of (100).

And the gateway 200, when receiving the setting information, it is preferable to perform the step of transmitting the setting information to the power information collecting device 100 (s365), the power information collecting device 100 ), when receiving the setting information through the wireless receiving means 160, finds the routing information, the measurement time, and the transmission time corresponding to its own identification number in the setting information, its own routing information , after performing the step of storing in the storage means as the measurement time and the transmission time (s370), performing the step of transmitting the setting information through the wireless transmission means 150 (s380), the initial information and the It is preferable to perform the step (s390) of stopping the transmission of the second initial information. Through these processes, the routing information, the measurement time, and the transmission time can be automatically set for each of the power information collecting device 100 .

On the other hand, it is also preferable to further store preliminary routing information in the storage means 140 . It is preferable that the preliminary routing information is unique identification information of the power information collecting device located in a position close to the top of the car toward the gateway 200 from each power information collecting device 100 . When the preliminary routing information is further included in the storage means 140 , the power information collection device 100 transmits the second power information through the wireless transmission means 150 , the power information collection device (100), among the second power information received through the wireless receiving means 160, when the routing information does not have second power information such as its own identification information, the preliminary routing information is its own With respect to the second power information such as identification information, it is preferable to change the routing information and the preliminary routing information to own routing information and preliminary routing information, and then transmit it through the wireless transmitting means 150 . That is, the absence of the second power information transmitted from the power information collection device 100 located on the opposite side of the gateway 200 with respect to itself means that the power information located before the power information collection device 100 fails due to a failure of the corresponding power information collection device 100. Since it means that the power information transmitted from the collecting device 100 cannot be delivered, in preparation for such a situation, the preliminary routing information is included, and the power information collecting device 100 is the previous power information collecting device 100 ), when the second power information cannot be delivered, the power information transmitted from the power information collecting device 100 located before it can be transmitted to the gateway 200 by using the preliminary routing information.

The present invention may also provide a method for determining the direction of a power current by using the power information transmitted by the power information collecting device 100 . 7 is a diagram for explaining the concept. In a transmission line or a distribution line, the load current at the power supply side is the largest, and the load current inevitably decreases as the line gets closer to the load side. This is because, in the case of a transmission line, a forward current due to the capacitance of the line flows, and thus the load current gradually decreases as it progresses toward the load, and also becomes smaller due to the line branching in the middle. And in the case of distribution lines, the load current inevitably decreases toward the load due to the supply to the load and the branching of other lines in the course of the line progress. However, if the load current increases during the progress of the line, it means that the current is supplied by the distributed power supply from the opposite side. Therefore, in the present invention, the analysis server 300 is able to determine the power flow direction of the transmission line or the distribution line by comparing the power information transmitted from each of the power information collecting device 100. That is, the direction of the power current is determined to be directed from the power information collecting device 100 having the large load current value toward the power information collecting device 100 having the small load current value among the power information collecting devices 100 adjacent to each other. it is preferable That is, as shown in FIG. 7 , the load current value measured by the power information collecting device 100a is 350A. If the power information collecting device 100b is 300A and 100c is 250A, the flow of power current is the power information collecting device 100a from the power information collecting device 100b. It means that it flows to 100c through However, if it is 300A at 100d, power is supplied due to distributed power before 100d, and it is determined that a power current is formed from 100d to 100c between 100c and 100d.

Meanwhile, according to the present invention, the load current distribution can be known on the transmission line and the distribution line as described above, and the direction of the power current can also be grasped. That is, it is possible for an analyst to arbitrarily set a specific area by using the power information sent by the power information collection devices 100 and measure the load power consumed in the arbitrary area or supplied to the arbitrary area. Alternatively, in an area where distributed power is concentrated, it is possible to measure the power supplied from an arbitrary specific area. 8 is an exemplary diagram for explaining this. For this purpose, it is preferable to further include an analyzer terminal (not shown) in the power information analysis system 10, and the analyzer terminal may measure the load power When a specific area is received and transmitted to the analysis server 300, the analysis server 300 specifies the transmission line or the distribution line passing through the boundary line of the specific area as an analysis target line, and the analysis target It is preferable to specify the power information collecting device 100 that is outside the specific area among the power information collecting devices 100 on the line and located closest to the boundary line as the analysis target device 100s. And using the power current direction at the point where the analysis target device 100s is located and the power information transmitted by the analysis target device 100s to analyze the load power for the specific area and transmit it to the analyzer terminal desirable. That is, it is possible to measure the load power consumed in city A by analyzing the analysis target devices 100s indicated in black in FIG. 8 . At this time, the load power is obtained by adding all the power values calculated using the phase voltage of the transmission line or the distribution line and the load current value, but when the direction of the power current is out of the specific area, it is taken as a negative value. It is preferable to do so. When receiving an input of an arbitrary specific region from the analyzer terminal, it is preferable to display geographic information on the screen of the analyzer terminal as a graphic screen, and then directly receive an arbitrary area on the graphic screen, city, county, It is also desirable to select the unit of administrative district, such as a district, to receive input.

Although the present invention has been described with various examples described above, the present invention is not necessarily limited to these examples, and various modifications may be made within the scope without departing from the technical spirit of the present invention. Therefore, the examples disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these examples. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10 Power information analysis system
20 Transmission towers, power poles
30 overhead line
100 power information collection device
110 Current transformer 120 Measuring means
130 GPS reception means 140 Storage means
150 wireless transmission means 160 wireless reception means
170 Power supply means 180 Control means
200 gateway
300 analysis server
400 network

Claims (6)

A power information collecting device that is repeatedly installed for each phase by a certain section on an overhead line, a gateway connected to the power information collecting device through an ad-hoc network, and an analysis server connected to the gateway through a commercial communication network or an internal communication network A power information analysis system comprising
Each of the power information collecting device includes a current transformer, a measuring means, a storage means, a wireless transmitting means and a wireless receiving means, and the storage means stores the measurement time and the transmission time,
When the measurement time arrives, the power information collection device measures the value of the load current flowing through the overhead line and generates power information including it, and when the transmission time arrives, the power information is transmitted to the wireless transmitting means transmitting through
when the power information collecting device receives power information transmitted by another power information collecting device through the wireless receiving means, transmitting it as second power information through the wireless transmitting means; and
When the gateway receives the power information and the second power information transmitted from the power information collecting device, transmitting the power information and the second power information to the analysis server;
The measurement time is the same in all of the power information collecting devices, but is a time that is repeated at regular time intervals, and the transmission time is a time between each of the measurement times, characterized in that it is different in each of the power information collecting devices , A method of collecting power transmission and distribution power information using the Internet of Things According to claim 1,
Each of the power information collecting device further comprises a GPS receiving means,
The storage means further includes unique identification information and routing information for the power information collection device,
The power information further includes the time at which the load current value is measured, the unique identification information, and the routing information,
The power information collection device,
- Determining whether the measurement time and the transmission time have arrived using the GPS receiving means,
- The load current value is measured using the current transformer and the measuring means,
In the step of the power information collecting device transmitting the second power information, the power information collecting device uses this as the second power information only when the routing information included in the power information is the same as its own identification information. , to transmit the second power information after changing the routing information to its own routing information,
The routing information is a method for collecting power transmission and distribution power information using the Internet of Things, characterized in that it is unique identification information of a power information collecting device that is located closest to the gateway from each power information collecting device. 3. The method of claim 1 or 2,
Comparing the power information transmitted from each of the power information collecting devices by the analysis server, determining the direction of a power current of the transmission line or the distribution line; further comprising,
Transmission and distribution power using the Internet of Things, characterized in that the power current direction is determined to be directed from a power information collecting device having a large load current value to a power information collecting device having a small load current value among adjacent power information collecting devices Information collection method 4. The method of claim 3,
The power information analysis system further includes an analyzer terminal,
receiving, by the analyzer terminal, a specific region to measure load power, and transmitting it to the analysis server;
The analysis server,
- specifying the transmission line or the distribution line passing through the boundary line of the specific area as an analysis target line;
- specifying, as an analysis target device, a power information collecting device located outside the specific area and closest to the boundary line among the power information collecting devices on the analysis target line; and
- Analyzing the load power for the specific area using the power current direction at the point where the analysis target device is located and the power information transmitted by the analysis target device and transmitting it to the analyzer terminal; A method of collecting power transmission and distribution power information using the Internet of Things, further comprising 5. The method of claim 4,
The load power is the power value calculated using the phase voltage of the transmission line or the distribution line and the load current value, but when the direction of the power current is out of the specific area, it is added as a negative value. A method for collecting power transmission and distribution power information using the Internet of Things As a power information collection system that measures and collects load current for each section of a transmission line or distribution line erected over a long distance,
A power information collecting device repeatedly installed for each section on an overhead line, a gateway connected to the power information collecting device through an ad-hoc network, and an analysis server connected to the gateway through a commercial communication network or an internal communication network,
Each of the power information collecting device,
-Containing a current transformer, measuring means, GPS receiving means, storage means, wireless transmitting means and wireless receiving means, wherein the storage means unique identification information for the power information collection device, routing information, measurement time and transmission time are stored, there is,
- Using the GPS signal received by the GPS receiving means, it is determined whether the measurement time and the transmission time have arrived,
- When the measurement time arrives, the load current value flowing through the overhead line is measured using the current transformer and the measuring means, and the load current value, the time at which the load current value is measured, the unique identification information and the routing information After generating power information including
- In the case of receiving second power information, which is power information transmitted by another power information collecting device, through the wireless receiving means, when routing information included in the second power information is the same as its own identification information, the second changing the routing information of the power information to its own routing information and then transmitting the second power information through the wireless transmission means;
The gateway receives the power information and the second power information transmitted by the power information collection device and transmits the received information to the analysis server;
The measurement time is the same in all of the power information collecting devices, but is a time that is repeated at regular time intervals, and the transmission time is a time between each of the measurement times and is different from each other in each of the power information collecting devices,
The routing information is a transmission/distribution power information collection system using the Internet of Things, characterized in that it is unique identification information of a power information collection device located closest to the gateway from each power information collection device.

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