JP5355228B2 - Telephone pole stress management system - Google Patents

Description

  The invention of the present application is connected to a power distribution system including power pole information and map information through a network, estimates the load of all power poles from the amount of deflection of the power pole at a predetermined position, and is used for power pole management / maintenance inspection Regarding management system.

  Patent Document 1 discloses a wide-angle three-dimensional image of a utility pole in order to manage the current state of the utility pole by clarifying the overall position of the utility pole and its surroundings, to prevent accidents due to deterioration, and to ensure safety. Take a picture of an eye image, convert fisheye image information into 2D video information, convert the 2D video information into a visual image, record or display it, and check the overall view and installation environment of the power pole A management method is disclosed.

  Patent Document 2 relates to a power pole tilt abnormality detection device that can be fixedly disposed on each power pole and detect the tilt abnormality. The tilt detection unit that outputs a signal corresponding to the tilt, and the presence or absence of the tilt abnormality are determined. And at least a tilt detector is fixedly placed at the height of a utility pole that is less likely to be damaged by various objects on the ground. Disclosed is a tilt abnormality detection device that enables a low-cost configuration by sharing a display unit among a plurality of utility poles.

  Patent Document 3 relates to a technique for providing information related to a power pole, and stores power pole position information, which is position information of each power pole, in a database in a database in association with identification information given in advance to each power pole. A step of accepting a request including the identification information via a network, a step of searching the utility pole position information corresponding to the identification information from the database, and requesting the utility pole position information for the utility pole position information. Disclosed is a utility pole information providing program that causes a terminal to execute the step of providing via a network.

  Patent Document 4 discloses an environmental data providing system that uses utility poles to provide environmental data that is useful information for grasping the surrounding environment such as land. This environmental data providing system is equipped with data acquisition means that is attached to a power pole and acquires at least one environmental data related to temperature, humidity, light intensity, sunshine duration, wind direction, wind power, sound, and airborne matter around the power pole. A database for storing the environmental data; and data providing means for providing the environmental data in the database to an external terminal. The database further includes map data including utility pole information of the utility pole, and further comprises data management means for managing the environmental data in the database based on the map data, the data management means , Based on the map data, it is possible to refer to the power pole information of the power pole existing around the land arbitrarily designated from the external terminal, and to extract the specific environmental data corresponding to the power pole information from the database It is like that.

  Patent document 5 discloses an abnormality detection system and an abnormality detection method for detecting an abnormality of various devices or the like (posts) installed on a power pole or a telephone pole. The anomaly detection system is provided on a pillar (transformer or the like), stores an identification tag for identifying the pillar, a reading unit that reads identification information from the IC tag, and the reading And processing means for detecting whether or not the pillar is in a predetermined position depending on whether the means has read the identification information of the pillar. As a result, when the columnar article is removed from the columnar body depending on whether or not the identification information has been read from the IC tag, it is outside the reach of the electromagnetic field for reading the identification information from the IC tag. It is possible to detect whether or not is in an abnormal position.

Japanese Patent Laid-Open No. 2001-273481 JP 2004-147374 A JP 2005-018250 A JP 2006-338777 A JP 2008-287366 A

  As is clear from the above-mentioned reference, the utility pole is used as the information source, the utility pole information and the utility pole environmental information are stored in the power distribution system via the power company's remote transmission network (network), voltage management, power failure management, It is publicly known to be used as information for performing maintenance management and the like.

  However, there is a problem that attaching the tilt abnormality detection device as disclosed in Patent Document 2 to all the power poles leads to an increase in cost, and it is possible to continue imaging all the power poles as disclosed in Patent Document 1. Impossible.

  Thus, in the current power distribution system, as shown in Patent Documents 3, 4, and 5 described above, the power pole information such as the position of the power pole, the standard of the power pole, the direction of the electric wire arranged between the power poles, and the like. Acquired and accumulated through the network, it is used for power distribution management, power outage management, maintenance management of electric wires and utility poles, etc.

  Also, for power poles on which power lines and communication lines (telephone lines, optical communication cables, etc.) standing on the ground are temporarily installed, if the load is imbalanced due to the tension of the overhead wire, the conductor part is bent and stress is applied. Fatigue caused fine cracks, which caused strength reduction due to corrosion of the reinforcing bars, etc., and there was a risk that part of the utility pole was broken or collapsed due to sudden load. For this reason, the present inventor invented a hollow elongate body bending measuring device for measuring the bending of a utility pole according to Japanese Patent Application No. 2008-287292.

  For this reason, for the purpose of the present invention, for example, the deflection amount of the utility pole detected by the hollow elongate body bending measuring device is effectively used for the management and maintenance inspection of the utility pole. Provide a utility pole stress management system that estimates the load of all utility poles in the whole (distribution system) and is useful for maintenance and inspection of utility poles.

  Therefore, the present invention is connected to a power distribution system including a power pole standard database including standard information of each power pole and a map information database including at least power pole mounting data, and is used for a predetermined line system connected by an overhead line. In a power pole stress management system connected to a deflection amount detecting means installed on a power pole of the power pole via a network, the actual deflection amount of the power pole (hereinafter, actually measured pole) where the deflection amount detecting means is installed is obtained from the power distribution system. The first load calculation means for calculating the estimated load acting on the top of the utility pole, the load calculated by the first load calculation means, and the obtained from the distribution system Wind speed calculation means for calculating the wind speed acting on the top of the utility pole based on the pole data unique to the utility pole; A second load for calculating an estimated load acting on the top of a power pole connected by a line (hereinafter, assumed power pole) based on the wind speed calculated by the wind speed calculating means and the pole-specific pole data acquired from the power distribution system. Load calculating means and load comparing means for comparing the estimated load of each power pole calculated by the first load calculating means or the second load calculating means with the design load of each power pole set at the time of design And when the estimated load is larger than the design load by the load comparing means, the emergency indicating means for instructing the electric pole to be inspected immediately, and the estimated load is designed by the comparing means. Is stored in the stress history database as the stress value of the utility pole. And a history storage unit. The wind speed may be wind pressure.

  As a result, in the actually measured power pole, the load acting on the top of the power pole is calculated from the amount of deflection to obtain an estimated load. When this estimated load is several times the design load of the power pole, abnormal stress is applied to the power pole. Since it can be detected that it is hanging, an instruction is given to urgently check the utility pole. Further, when the estimated load exceeds a predetermined load within a predetermined range, the estimated load is accumulated and stored as a stress value, and a large accumulation can be listed as a priority inspection utility pole during periodic inspection. it can.

  In addition, the estimated wind force at that time is obtained from the estimated load calculated in the actually measured power pole, and the estimated load acting on the upper part of the assumed power pole is calculated from the arrangement situation of the power pole of the line system of the power pole. If the estimated load is several times the design load of this utility pole, it is possible to detect that this utility pole is under abnormal stress, and an instruction is given to urgently check this utility pole. . Further, when the estimated load exceeds a predetermined load within a predetermined range, the estimated load is accumulated and stored as a stress value, and a large accumulation can be listed as a priority inspection utility pole during periodic inspection. it can.

  The present invention further includes estimated deflection amount detection means for calculating an estimated deflection amount of the utility pole based on the estimated load calculated by the second load means, and another actually measured utility pole in the distribution line. A correction means for correcting the estimated load of each assumed power pole of the distribution line by comparing the estimated deflection calculated from another measured power pole and the actual deflection of the measured power pole. .

  As a result, it is possible to compare the estimated deflection calculated by another measured utility pole of one distribution line with the actual deflection of the measured utility pole. Based on the difference, the calculated estimated load of the distribution line can be corrected, and an accurate stress value of each power pole can be set.

  Further, in the present invention, it is preferable that the stress history storage means obtains a maximum value within a predetermined time for the calculated estimated load and cumulatively stores the maximum value as a stress value of the utility pole in the stress history database.

  Furthermore, in the present invention, it is preferable to provide list-up means for listing the cumulative value of stress values from the stress history database at the time of power pole maintenance inspection, and for giving priority to maintenance inspection of power poles in descending order of stress values.

  Thus, according to the present invention, the estimated load of the actually measured power pole is calculated from the actual amount of deflection of the power pole (measured power pole) provided with the deflection amount detecting means, and the power pole connected to the actually measured power pole by the overhead wire ( Assuming that the load on the assumed utility pole) can be estimated, if an abnormality occurs in this load, maintenance and inspection of the utility pole can be performed quickly, so accidents due to breakage of the utility pole can be prevented in advance. Moreover, since the stress concerning all the utility poles can be managed, there is an effect that maintenance and inspection of the utility poles can be performed efficiently.

  In addition, when there are multiple measured utility poles in one distribution line, the estimated load of other assumed utility poles can be corrected based on the estimated deflection amount of the measured utility pole calculated from one measured utility pole and the actual deflection amount. The accuracy of the estimated load of each power pole can be improved.

It is the schematic which showed the whole structure of this invention. It is a stress management flowchart figure of a measurement utility pole. It is a stress management flowchart figure of an assumption electric pole. It is the schematic explaining correction | amendment of the wind pressure load of a utility pole.

  The utility pole stress management system of the present invention is connected to a power distribution system including a utility pole standard database including standard information of each utility pole and a map information database including at least utility pole mounting data, and is connected to an overhead line. It is connected to a deflection amount detecting means installed on a predetermined power pole of the system via a network.

Based on this, the present invention calculates the estimated load applied to the top of the utility pole based on the actual deflection measured from the utility pole (measured utility pole) capable of measuring the deflection, and the estimated load and utility pole standard. Therefore, the wind speed in the vicinity of the utility pole, the so-called area (distribution system) is estimated, and the estimated load acting on the top of the utility pole (assuming utility pole) where the deflection amount cannot be measured is calculated.
Then, if the estimated load of each utility pole estimated in this way is more than twice the design load of each utility pole, for example, a patrol required list for confirming the utility pole to be immediately checked for maintenance When the estimated load exceeds the design load within a predetermined range, it is accumulated and stored as stress of the utility pole for reference during maintenance inspection.

  In addition, when assuming the wind speed (wind pressure) to all the power poles, the direction in which the electric wires extend, the state of equipment installation on the power poles, and the like are estimated from the pole status of the actually measured power poles. Specifically, the equipment data of a plurality of actually measured power poles are corrected by comparing with the equipment data of the assumed power pole, and the wind pressure of the assumed power pole is approximated.

  In the assumed power pole, the estimated deflection amount is calculated from the estimated load and used for correcting the estimated load. This is because when there are multiple measured poles in the same area and the estimated deflection of one measured pole is calculated from one measured pole, the estimated pole calculated from another measured pole Since there is a deflection amount and the actual deflection amount of the utility pole itself, an error is revealed by comparing the estimated deflection amount of the utility pole with the actual deflection amount, so the estimated load of another assumed utility pole in the distribution line By being able to correct. Thereby, the precision of the estimated load of each utility pole can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

  An overall configuration diagram of the present invention is schematically shown in FIG. The utility pole stress management system 1 according to the present invention is connected to a power distribution system 2 that is executed in a computer arranged at a sales office or the like. The power distribution system 2 is connected to the power pole standards (the power pole itself) of at least all the power poles 7. Information, for example, the utility pole standard database 3 in which the utility pole material, height, diameter, and shape are stored as data, the utility pole number of the utility pole 7, information on the equipment position, equipment, topographic map, and installation data (post photo) And the like, and a stress history database 5 that stores the maximum stress of all utility poles for a predetermined time and the accumulated stress value as data.

  In addition, for the utility pole 7 in FIG. 1, for example, the line system connected by the overhead line 8 is a distribution line form, for example, the utility poles A, B, C, D, E, F, G, connected by the overhead line 8 are used. Area I is composed of H ..., and area II is composed of utility poles A ', B', C ', D', E ', F', G '..., and utility poles A ", B", C ", D", E "... shows that area III is composed. Here, poles A, A '(E), A" (G') are deflections of the pole. This is an actually measured electric pole equipped with a hollow elongate body bending measuring device 9 for detecting the quantity, and the deflection amount of the utility poles A, A ', A "is the actual deflection quantity via the network 6 and the utility pole stress management system 1 And is transmitted as needed to the power distribution system 2. Also, other utility poles B, C, D, F, G, H, B ', C', D ', E', B ", C", D ", E "is the estimated load and the estimated deflection based on the measured poles A, A ', A" The assumed utility poles is calculated. In addition, it shows that the utility pole A ′ in the area II is the same as the utility pole E in the area I, and the utility pole A ″ in the area III is the same as the utility pole G in the area II.

  The flowchart which shows operation performed with the utility pole stress management system 1 of this invention is shown by FIG.2 and FIG.3. Hereinafter, it demonstrates according to this flowchart.

  As shown in FIG. 2, stress management of the utility pole is executed for the measured utility poles A, A ′, A ″. First, in step 110, the hollow long length equipped on the measured utility poles A, A ′, A ″ The actual deflection amount detected by the body curvature measuring device 9 is acquired via the network 6.

  In step 120, for example, based on the actual deflection amount (α) acquired for the utility pole A and the utility pole data obtained from the utility pole standard database 3 for the utility pole A, the estimated load (Y) acting on the top of the utility pole A is calculated. . This is based on the utility pole data obtained from the utility pole standard database 3, and the vertical projection of the components based on the type of support of the utility pole, for example, wooden pole, steel pole, reinforced concrete and steel tower and shape, as well as wires and other interference lines. A wind pressure load per area is estimated, and an estimated load (Y) acting on the top is calculated from the amount of deflection of the type of utility pole based on the observation result.

  The estimated load (Y) calculated in step 120 is compared with the design load (X) in steps 170 and 180 of the inspection and maintenance process 300. This design load (X) is set for each utility pole based on the technical standards of electrical equipment. For example, in the case of a reinforced concrete pillar, the same standard of Japanese Industrial Standard JIS A5309 (centrifugal press stress concrete pole) The “cracking test load” is the design load.

  If the estimated load (Y) of the utility pole A is smaller than the design load (X) (YES in step 170), the inspection and maintenance process 300 is completed as it is. If the estimated load (Y) is more than twice the design load (X) (YES in step 180), the estimated load (Y) is dangerously large. An alarm is issued so that this telephone pole A is checked immediately.

If the estimated load (Y) is larger than the design load (X) in the determinations in steps 170 and 180, but is within a predetermined range (within 2 times in this embodiment), the process proceeds to step 200. Then, the maximum value of the estimated load (Y) is obtained every predetermined time (for example, every 10 minutes) and stored in the stress history database 5 as the stress value ξ (ξ = (Y / X) ² ) of the utility pole. The accumulated value of the stress values ξ stored and accumulated in the stress history database 5 is listed at the time of maintenance and inspection of the utility pole, and serves as an index for careful inspection of the utility pole located at the top.

The estimated load Y of the assumed power pole, for example, the assumed power pole B, is calculated based on, for example, the flowchart shown in FIG. As described above, the actual deflection amount of the actually measured power pole A is acquired in step 110, and the estimated load F acting on the top of the actually measured power pole A is calculated in step 120. Further, in step 130, an inferior wind pressure load F ₀ acting on the top of the power pole is derived based on the estimated load F acting on the top of the actually measured power pole A and the pole data from the map information database 4 of the power distribution system 2. The wind speed V is determined by the following equation (1).

  Incidentally, 40 (m / s) in the mathematical formula is a design wind speed determined based on the maximum average wind speed for 10 minutes at 15 m above the ground based on the meteorological observatory of each place. Further, when the calculation is executed based on the wind pressure instead of the wind speed, the wind pressure is calculated by the following formula 2 based on the wind speed V.

Ρ: air density (Kg · s ² / m ² )
＝ 0.125 (Low-temperature standard atmospheric condition: atmospheric pressure 760mmHg, temperature 15 ℃
＝ 0.115 (Atmospheric condition during high temperature typhoon: atmospheric pressure 720mmHg, temperature 23 ℃
V: Wind speed (m / s)
C: Air resistance coefficient (C = 1.0 for overhead wires, C = 0.8 for round concrete columns)

  Based on the wind speed V calculated as described above, in step 140, a load acting on the top of the assumed power pole B (C, D, E, F, G, H) is estimated (estimated load Y). The calculation of the estimated load Y is executed by a method reverse to the calculation of the wind speed V in step 130. Specifically, the estimated load Y is calculated by the following formula 3 based on the wind speed V and the class A wind pressure load F1 acting on the top of the utility pole. In this case, as shown in FIG. 4, correction (cos θ) is further performed based on the track form extracted by the map information database 4.

  In the same manner, in area I, the estimated loads Y of the assumed power poles B, C, D, E, F, G, H,... Are calculated based on the amount of deflection of the measured power pole A, and in area II, the measured power pole A ′ , The estimated loads Y of the assumed power poles B ′, C ′, D′ E ′, F ′, G ′... Are calculated, and in area III, the assumed power poles B ″, C are based on the actually measured power pole A ″. “, D”, E ”... Are calculated.

  The inspection maintenance process 300 in steps 170 to 200 may be performed based on the estimated load Y of each assumed power pole. In this embodiment, however, in step 150, the method opposite to step 120 is further performed. Then, the estimated deflection amount (β) of each utility pole is calculated from the estimated load Y of each utility pole.

  For example, in area I, the estimated deflection amount β of the assumed power poles B, C, D, E, F, G, and H is calculated. At this time, the assumed power pole E in the area I coincides with the actually measured power pole A ′ in the area II, and therefore, the assumed power pole E has the estimated deflection amount β and the actual deflection amount α.

  Therefore, in step 160, for example, based on the difference (α−β) between the actual deflection amount α detected as the actually measured power pole A ′ and the estimated deflection amount β as the assumed power pole E, for example, the assumed power poles B, C, F , G, and H are corrected, and the estimated load Y of the assumed utility poles B, C, F, G, and H is corrected based on this. Similarly, since the assumed power pole G ′ in area II matches the measured power pole A ″ in area III, the actual deflection amount α and the estimated deflection amount β in this assumed power pole A ″ (G ′) are compared, and The estimated deflection amount β of the assumed power poles B ′, C ′, D ′, E ′, and F ′ is corrected, and the estimated load Y of these assumed power poles is corrected based on this.

  The estimated load Y corrected in step 160 is subjected to the same processing in the inspection and maintenance process 300 configured in steps 170 to 200 described above, whereby the estimated load Y of all utility poles can be determined, The stress ξ of all utility poles can be calculated and stored.

DESCRIPTION OF SYMBOLS 1 Telephone pole stress management system 2 Power distribution system 3 Telephone pole standard database 4 Map information database 5 Stress history database 6 Network 7 Telephone pole 8 Overhead wire 9 Hollow long body curvature measuring device

Claims (4)

Connected to a power distribution system that includes a power pole standard database that includes the standard information of each power pole and a map information database that includes at least power pole mounting data, and is installed on a predetermined power pole of a line system connected by overhead lines In a utility pole stress management system connected to a deflection amount detection means via a network,
First load calculation means for calculating an estimated load acting on the top of the utility pole from the actual deflection amount of the utility pole in which the deflection amount detection means is installed and the utility pole standard data of the utility pole acquired from the power distribution system;
A wind speed calculating means for calculating the wind speed acting on the top of the power pole, based on the load calculated by the first load calculating means and the pole column specific data acquired from the power distribution system;
The estimated load acting on the top of the utility pole connected to the utility pole where the deflection amount detection means is installed by the overhead wire, the wind speed calculated by the wind speed calculation means, and the pole data unique to the utility pole acquired from the power distribution system A second load calculating means for calculating by
Load comparing means for comparing the estimated load of each power pole calculated by the first load calculating means or the second load calculating means with the design load of each power pole set at the time of design;
Emergency instruction means for instructing that the power pole be inspected immediately when the estimated load is larger than the design load by the load comparing means;
When the estimated load is larger than the design load by the comparing means within a predetermined range, the estimated load is configured by stress history storage means for accumulating and storing the estimated load as a stress value of the utility pole in the stress history database. A characteristic utility pole stress management system. An estimated deflection amount detecting means for calculating an estimated deflection amount of the utility pole based on the estimated load calculated by the second loading means;
When the power pole capable of calculating the estimated load in the distribution line is a power pole provided with a deflection amount detecting means, it is calculated in the distribution line based on the estimated deflection amount of the power pole and the actual deflection amount of the power pole. 2. The utility pole stress management system according to claim 1, further comprising correction means for correcting the estimated load of each utility pole.   3. The stress history storage unit calculates a maximum value within a predetermined time for the calculated estimated load, and cumulatively stores the maximum value as a stress value of the utility pole in a stress history database. The telephone pole stress management system described. 4. The system according to claim 1, further comprising: a list-up means for listing a cumulative value of stress values from the stress history database at the time of power pole maintenance inspection, and for giving priority to maintenance inspection of power poles in descending order of stress values. The utility pole stress management system as described in any one.

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