CN109655036B

CN109655036B - Transformer substation subsides and pole stress monitoring system

Info

Publication number: CN109655036B
Application number: CN201811590739.7A
Authority: CN
Inventors: 张敏; 吴万军; 熊西林; 徐彬; 罗长兵; 李凤龙; 任宪利; 余宛辰
Original assignee: Diqing Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Diqing Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2021-04-20
Anticipated expiration: 2038-12-25
Also published as: CN109655036A

Abstract

The invention provides a transformer substation settlement and pole stress monitoring system which comprises an in-station settlement monitoring subsystem, a tower pole and surrounding soil uneven settlement monitoring subsystem, an inclination monitoring subsystem, a framework stress-strain monitoring subsystem, a satellite positioning monitoring subsystem, a data management and display subsystem and a structure safety assessment and early warning subsystem. The monitoring subsystems can automatically complete data acquisition, the data management and display subsystem can comprehensively process monitoring information acquired and uploaded by the monitoring subsystems, complete functions of data classification filing, inquiry, storage and the like, display the monitoring information to a user, perform settlement and transformer substation safety state evaluation on the organized data through the structure safety evaluation and early warning subsystem, assist the user in providing scientific decisions or inform the user of timely response, and provide technical support for realizing transformer substation safe operation.

Description

Transformer substation subsides and pole stress monitoring system

Technical Field

The invention relates to the field of online monitoring, in particular to a transformer substation settlement and pole stress monitoring system.

Background

In the past, the transformer substation is mainly located in a higher taxi zone so as to reduce the filling amount. With the continuous development of economic society, land resources are increasingly tense, a plurality of lands such as hills, alluvial lakes or mudflats are developed to build transformer substations, the mechanical strength of the poor-quality filled soil or the land with large water content is lower, and the bearing capacity of the soil layer foundation is poorer. The problem of the settlement of the transformer substation foundation caused by the soft foundation is increasingly prominent, and the method brings great influence on the safe operation, the residential electricity consumption and the social stability of the transformer substation.

The comprehensive monitoring of the field settlement, the foundation settlement and the stress change of the tower pole of the built transformer substation is facilitated for managers to timely and actively control the settlement of the transformer substation, evaluate the safety condition of the transformer substation, realize real-time monitoring and be necessary for guaranteeing the power supply safety.

Disclosure of Invention

In view of the above, the invention provides a system which can automatically perform functions of in-station settlement monitoring, uneven settlement monitoring of a tower pole and surrounding soil, bridge tower inclination monitoring, structural support stress-strain monitoring and satellite positioning monitoring; the visual settlement and stress change trends are produced according to the historical settlement and stress states and the current settlement and stress conditions, and the transformer substation settlement and pole stress monitoring system capable of providing reliable decision guidance for users can be provided.

The technical scheme of the invention is realized as follows: on one hand, the transformer substation settlement and pole stress monitoring system comprises an in-station settlement monitoring subsystem (1), a tower pole and surrounding soil uneven settlement monitoring subsystem (2), an inclination monitoring subsystem (3), a structural support stress and strain monitoring subsystem (4), a satellite positioning monitoring subsystem (5), a data management and display subsystem (6) and a structure safety assessment and early warning subsystem (7), the in-station settlement monitoring subsystem (1), the tower pole and surrounding soil body uneven settlement monitoring subsystem (2), the inclination monitoring subsystem (3), the structural support stress and strain monitoring subsystem (4) and the satellite positioning monitoring subsystem (5) are in signal connection with the data management and display subsystem (6), and the data management and display subsystem (6) is in signal connection with the structure safety assessment and early warning subsystem (7);

the in-station settlement monitoring subsystem (1) is used for setting in-station settlement observation points at the boundary of the transformer substation, the tower pole, the bridge tower, the structure support and the house, monitoring the overall settlement trend of the transformer substation, obtaining the settlement information of the in-station settlement observation points and sending the monitored in-station settlement information to the data management and display subsystem (6);

the system comprises a tower pole and surrounding soil body differential settlement monitoring subsystem (2) and a data management and display subsystem (6), wherein the tower pole and surrounding soil body differential settlement monitoring subsystem is used for monitoring differential settlement information between the tower pole and a buried cable at the bottom of the tower pole and sending the monitored differential settlement information between the tower pole and the surrounding soil body to the data management and display subsystem (6);

the inclination monitoring subsystem (3) is used for monitoring inclination angle information of a cross beam at the top of the bridge tower to obtain the inclination degree of the bridge tower affected by settlement, and sending the monitored inclination angle information of the cross beam at the top of the bridge tower to the data management and display subsystem (6);

the structural support stress-strain monitoring subsystem (4) is used for monitoring stress information of a concrete foundation at the bottom of the structural support, the side surface of the structural support and a steel frame at the top of the structural support, and sending the monitored stress information of the concrete foundation at the bottom of the structural support, the side surface of the structural support and the steel frame at the top of the structural support to the data management and display subsystem (6);

the satellite positioning monitoring subsystem (5) simultaneously monitors the absolute deformation values of the transformer substation in the horizontal direction and the vertical direction by using a satellite positioning mode, and sends the monitored absolute deformation value information of the transformer substation in the horizontal direction and the vertical direction to the data management and display subsystem (6);

the data management and display subsystem (6) is used for receiving all monitoring information sent by the settlement monitoring subsystem (1) in the station, the uneven settlement monitoring subsystem (2) of the tower pole and the surrounding soil body, the inclination monitoring subsystem (3), the structural support stress-strain monitoring subsystem (4) and the satellite positioning monitoring subsystem (5), checking, classifying, storing and outputting the monitoring information according to a historical sequence, and the data management and display subsystem (6) sends the stored monitoring information to the structural safety assessment and early warning subsystem (7);

the structure safety assessment and early warning subsystem (7) is used for receiving monitoring information sent by the data management and display subsystem (6), identifying risks, making auxiliary decision reference information, feeding the auxiliary decision reference information back to the data management and display subsystem (6), and storing and outputting the auxiliary decision reference information by the data management and display subsystem (6).

On the basis of the technical scheme, preferably, the in-station settlement monitoring subsystem (1) comprises an in-station settlement observation reference point (11), a plurality of fiber grating type static level gauges (12) and an in-station settlement fiber grating demodulator (13); a water tank (111) is arranged in the in-station settlement observation reference point (11), the bottom of the water tank (111) is communicated with the bottoms of the fiber grating type static level gauges (12) through pipelines, and the liquid levels in the water tank (111) and the fiber grating type static level gauges (12) are the same in height; the output end of the fiber grating type static level gauge (12) is in signal connection with the input end of an in-station settlement fiber grating demodulator (13); the output end of the in-station settlement fiber grating demodulator (13) is in signal connection with the input end of the data management and display subsystem (6); the fiber grating type static level gauge (12) comprises a fiber grating sensor (121), a connecting rod (122), a floating ball (123) and a temperature compensation grating (124), the top of the inner wall of the fiber grating type static level gauge (12) is fixedly provided with the fiber grating sensor (121) and the temperature compensation grating (124), the fiber grating sensor (121) is connected with the top surface of the connecting rod (122), the floating ball (123) is arranged at the bottom of the connecting rod (122), and the output ends of the fiber grating sensor (121) and the temperature compensation grating (124) are connected with the input end signal of the in-station settlement fiber grating demodulator (13).

On the basis of the technical scheme, preferably, the tower pole and surrounding soil body differential settlement monitoring subsystem (2) comprises a plurality of tower poles (21), a plurality of fiber bragg grating tension displacement meters (22) and a tower pole fiber bragg grating demodulator (23), wherein the bottom of each tower pole (21) is provided with a grounding switch hoop (20) and a buried cable, one end of each fiber bragg grating tension displacement meter (22) is fixed on the corresponding grounding switch hoop (20), and the other end of each fiber bragg grating tension displacement meter (22) is fixed at one end, buried in backfill, of the buried cable; the output end of the fiber bragg grating tension displacement meter (22) is in signal connection with the input end of the tower rod fiber bragg grating demodulator (23); the output end of the tower rod fiber grating demodulator (23) is in signal connection with the input end of the data management and display subsystem (6).

On the basis of the technical scheme, preferably, the inclination monitoring subsystem (3) comprises a bridge tower (31), a plurality of fiber grating type inclinometers (32) and an inclination fiber grating demodulator (33), wherein the fiber grating type inclinometers (32) are fixedly arranged on a cross beam at the top of the bridge tower (31); the output end of the fiber bragg grating inclinometer (32) is in signal connection with the input end of the fiber bragg grating demodulator (33); the output end of the tilt angle fiber grating demodulator (33) is in signal connection with the input end of the data management and display subsystem (6).

On the basis of the technical scheme, preferably, the structural support stress-strain monitoring subsystem (4) comprises a plurality of frameworks (41), a plurality of supports (42), a plurality of bottom fiber grating surface strain gauges (43), a plurality of side fiber grating surface strain gauges (44) and a structural support stress fiber grating demodulator (45), wherein the frameworks (41) and the supports (42) vertically extend upwards along the vertical direction; two bottom fiber grating surface strain gauges (43) are symmetrically arranged on a concrete foundation at the bottom of the framework (41), the bottom fiber grating surface strain gauges (43) are vertically arranged on the concrete foundation at the bottom of the framework (41), and two side fiber grating surface strain gauges (44) are symmetrically arranged on the side surface of the framework (41); a lateral fiber grating surface strain gauge (44) is arranged on a steel frame at the top of the bracket (42); the output ends of the bottom fiber grating surface strain gauge (43) and the side fiber grating surface strain gauge (44) are in signal connection with the input end of a structural support stress fiber grating demodulator (45); the output end of the framework stress fiber grating demodulator (45) is in signal connection with the input end of the data management and display subsystem (6).

On the basis of the technical scheme, preferably, the satellite positioning monitoring subsystem (5) comprises an off-station GNSS satellite positioning monitoring station (51) and a plurality of in-station GNSS satellite positioning monitoring stations (52), wherein the off-station GNSS satellite positioning monitoring station (51) is arranged in a geological stable area outside the transformer substation, and the in-station GNSS satellite positioning monitoring station (52) is arranged in the transformer substation; the output end of the off-site GNSS satellite positioning monitoring station (51) and the output end of the on-site GNSS satellite positioning monitoring station (52) are in signal connection with the input end of the data management and display subsystem (6).

On the basis of the technical scheme, preferably, the data management and display subsystem (6) comprises a data acquisition module (61), a data classification and extraction module (62), a data storage module (63) and a user UI module (64), wherein the input end of the data acquisition module (61) is respectively in signal connection with the output ends of the in-station settlement monitoring subsystem (1), the tower pole and surrounding soil uneven settlement monitoring subsystem (2), the inclination monitoring subsystem (3), the framework stress-strain monitoring subsystem (4) and the satellite positioning monitoring subsystem (5); the output end of the data acquisition module (61) is in signal connection with the input end of the data classification and extraction module (62); the output end of the data classification and extraction module (62) is in signal connection with the input end of the data storage module (63); the data storage module (63) is in bidirectional communication with the user UI module (64); the output end of the data storage module (63) is in signal connection with the input end of the structural safety assessment and early warning subsystem (7); the input end of the user UI module (64) is also in signal connection with the output end of the data acquisition module (61).

Further preferably, the structural safety assessment and early warning subsystem (7) comprises a structural assessment module (71), a structural safety control auxiliary decision-making module (72) and an automatic early warning module (73), wherein the input end of the structural assessment module (71) is in signal connection with the output end of the data storage module (63), and the output end of the structural assessment module (71) is in signal connection with the input end of the structural safety control auxiliary decision-making module (72); the output end of the structure safety control auxiliary decision-making module (72) is in signal connection with the input end of the automatic early warning module (73), and the output end of the automatic early warning module (73) is in signal connection with the data storage module (63) and the user UI module (64) respectively.

On the other hand, the invention also provides a using method of the transformer substation settlement and pole stress monitoring system, which comprises the following steps:

s1: configuring an in-station settlement monitoring subsystem (1): installing in-station settlement observation reference points (11), densely arranging fiber grating type static leveling instruments (12) along a transformer substation structure building and a settlement area, ensuring that each fiber grating type static leveling instrument (12) is located at the same elevation with the in-station settlement observation reference points (11) after being installed, and constructing equal-height in-station settlement monitoring areas; the top of the inner wall of the fiber grating type static level gauge (12) is fixedly provided with a fiber grating sensor (121) and a temperature compensation grating (124), the fiber grating sensor (121) is connected with the top surface of a connecting rod (122), the bottom of the connecting rod (122) is provided with a floating ball (123), the output ends of the fiber grating sensor (121) and the temperature compensation grating (124) are in signal connection with the input end of an in-station settlement fiber grating demodulator (13), and the output end data management of the in-station settlement fiber grating demodulator (13) is in signal connection with the input end of a display subsystem (6); the bottom of a water tank (111) in the station settlement observation reference point (11) is communicated with the bottoms of the fiber grating static level gauges (12) through pipelines, liquid is slowly and uniformly filled into the water tank (111), air in the pipelines is completely removed, and bubbles are removed, so that the liquid levels in the water tank (111) and the fiber grating static level gauges (12) are the same; after the configuration is finished, collecting and uploading initial settlement information of the arrangement points of each fiber grating type static level (12);

s2: a tower pole and surrounding soil body uneven settlement monitoring subsystem (2) is configured: arranging a grounding switch hoop (20) at the bottom of a tower pole (21), fixing one end of a fiber bragg grating tension displacement meter (22) on the grounding switch hoop (20), and fixing the other end of the fiber bragg grating tension displacement meter (22) at one end of the cable embedded backfill soil; the output end of the fiber bragg grating tension displacement meter (22) is in signal connection with the input end of the tower rod fiber bragg grating demodulator (23); the output end of the tower rod fiber grating demodulator (23) is in signal connection with the input end of the data management and display subsystem (6); after configuration is finished, collecting and uploading initial tension information to the arrangement points of the fiber bragg grating tension displacement meters (22);

s3: configuring a tilt monitoring subsystem (3): a fiber grating inclinometer (32) is fixedly arranged on a beam at the top of the bridge tower (31), so that a horizontal bubble of the fiber grating inclinometer (32) is positioned at the middle position; the output end of the fiber bragg grating inclinometer (32) is in signal connection with the input end of the fiber bragg grating demodulator (33); the output end of the tilt angle fiber grating demodulator (33) is in signal connection with the input end of the data management and display subsystem (6); after configuration is finished, collecting and uploading initial tilt information of each fiber grating type inclinometer (32) arrangement point;

s4: configuring a structural support stress-strain monitoring subsystem (4): the two bottom fiber grating surface strain gauges (43) are symmetrically arranged on the concrete foundation at the bottom of each framework (41), the concrete foundation on which the bottom fiber grating surface strain gauge (43) is installed is polished and leveled, and then the bottom fiber grating surface strain gauge (43) is vertically fixed on the concrete foundation at the bottom of the framework (41); symmetrically installing two side fiber grating surface strain gauges (44) on the side surface of each framework (41); a lateral fiber grating surface strain gauge (44) is arranged on a steel frame at the top of the bracket (42); the output ends of the bottom fiber grating surface strain gauges (43) and the side fiber grating surface strain gauges (44) are in signal connection with the input end of a framework stress fiber grating demodulator (45); the output end of the framework stress fiber grating demodulator (45) is in signal connection with the input end of the data management and display subsystem (6); after configuration is finished, acquiring and uploading initial stress information of a bottom fiber grating surface strain gauge (43) and a side fiber grating surface strain gauge (44) on each framework (41) and a side fiber grating surface strain gauge (44) arranged on a steel frame at the top of a support (42);

s5: configuring a satellite positioning monitoring subsystem (5): arranging an off-station GNSS satellite positioning monitoring station (51) in a stable area outside a transformer substation, and arranging a plurality of in-station GNSS satellite positioning monitoring stations (52) in the transformer substation, wherein one in-station GNSS satellite positioning monitoring station (52) is arranged on the side surface of an internal settlement observation reference point (11); the output end of the off-site GNSS satellite positioning monitoring station (51) and the output end of the on-site GNSS satellite positioning monitoring station (52) are in signal connection with the input end of the data management and display subsystem (6); after configuration is finished, an off-station GNSS satellite positioning monitoring station (51) and an in-station GNSS satellite positioning monitoring station (52) respectively acquire and upload initial satellite positioning information;

s6: data acquisition and analysis: uploading the initial settlement information, the initial tension information, the initial inclination information, the initial stress information and the initial satellite positioning information acquired in the steps to a data acquisition module (61) of a data management and display subsystem (6), carrying out data verification on the initial settlement information, the initial tension information, the initial inclination information, the initial stress information and the initial satellite positioning information by the data acquisition module (61), classifying the initial settlement information, the initial inclination information, the initial stress information and the initial satellite positioning information by a data classification and extraction module (62), and transmitting the initial settlement information, the initial tension information, the initial inclination information, the initial stress information and the;

a data acquisition module (61) of a data management and display subsystem (6) periodically controls a settlement monitoring subsystem (1) in a station, a tower pole and surrounding soil uneven settlement monitoring subsystem (2), an inclination monitoring subsystem (3), a support stress-strain monitoring subsystem (4) and a satellite positioning monitoring subsystem (5) to acquire current monitoring information of the subsystems respectively and gather the current monitoring information into the data acquisition module (61) for data verification, the data after the data verification is transmitted to a data classification and extraction module (62) by the data acquisition module (61), the data classification and extraction module (62) classifies the current monitoring information according to the subsystem types, and the classified current monitoring information is transmitted to a data storage module (63) by the data classification and extraction module (62); on one hand, the data storage module (63) archives the current monitoring information, on the other hand, the data storage module (63) sends the current monitoring information to the user UI module (64) and the structure evaluation module (71) of the structure safety assessment and early warning subsystem (7);

s7: and (3) structural safety assessment and early warning: after receiving current monitoring information sent by a data storage module (63), a structure evaluation module (71) of the structure safety assessment and early warning subsystem (7) compares the current monitoring information with initial monitoring information and performs preliminary analysis to judge whether the current monitoring information exceeds a set safety threshold, the structure evaluation module (71) sends the current monitoring information and a judgment result to a structure safety control auxiliary decision module (72), the structure safety control auxiliary decision module (72) identifies risks and makes auxiliary decision reference information, the structure safety control auxiliary decision module (72) sends the auxiliary decision reference information to an automatic early warning module (73), and the automatic early warning module (73) respectively sends the auxiliary decision reference information to the data storage module (63) and a user UI module (64); the data management and display subsystem (6) and the structural safety assessment and early warning subsystem (7) repeatedly execute the steps S6-S7 according to set time;

s8: data visualization and daily maintenance: the user UI module (64) generates a visual chart supporting interaction according to current monitoring information and current auxiliary decision reference information sent by the data storage module (63) and the automatic early warning module (73) and by using a data visualization tool, the visual chart provides a visual transformer substation settlement and pole stress change trend for a user in a more visual mode, so that the user can visually and timely know the settlement and stress change conditions and assist the user in making decisions.

Compared with the prior art, the transformer substation settlement and pole stress monitoring system provided by the invention has the following beneficial effects:

(1) the in-station settlement monitoring subsystem monitors the elevation change among a plurality of monitoring points by using the fiber bragg grating, monitors the settlement change by using the buoyancy change borne by the floating ball, and is suitable for analyzing the integral settlement condition of the transformer substation; the tower pole and surrounding soil body differential settlement monitoring subsystem utilizes a fiber bragg grating tension displacement meter to accurately measure the displacement of the cable buried settlement and monitors the differential settlement condition of the tower pole and surrounding soil; the fiber grating inclinometer is arranged on the beam at the top of the bridge tower, so that the inclination degree of the bridge tower can be accurately monitored; the structural support stress-strain monitoring subsystem can monitor the stress changes of the foundation of the structural support, the side surface of the structural support and the top of the structural support so as to control the stress states of the structural support and the structural support in real time; the satellite positioning monitoring subsystem can comprehensively utilize GNSS for integrated monitoring, quantitatively analyzes the elevation change and the deformation in the horizontal direction of the subsidence area, and provides an accurate absolute deformation value for later visual analysis;

(2) the data management and display subsystem can comprehensively process the monitoring information acquired and uploaded by each monitoring subsystem, complete the functions of classification filing, inquiry, storage and the like of the data, display the monitoring information to a user, carry out settlement and transformer substation safety state evaluation on the additionally arranged data by the structure safety assessment and early warning subsystem, assist the user in providing scientific decisions or inform the user of timely response, and provide technical support for realizing safe operation of the transformer substation;

(3) the user UI module can receive and process data stored by the data storage module and receive auxiliary decision reference information, can also call historical monitoring data, completes graphical and trend display of the monitoring data, provides reference for scientific decision, and can also actively send query instructions to each monitoring subsystem, so that daily inspection and troubleshooting are facilitated, and the reliability of the whole system is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a system structure diagram of a transformer substation settlement and pole stress monitoring system according to the present invention;

FIG. 2 is a front view of the structure of an in-station settlement monitoring subsystem of the transformer substation settlement and pole stress monitoring system of the present invention;

FIG. 3 is a plan view of an in-station settlement observation reference point and a fiber grating type static level gauge of the transformer substation settlement and pole stress monitoring system according to the present invention;

FIG. 4 is a structural front view of a tower pole and surrounding soil differential settlement monitoring subsystem of the transformer substation settlement and pole stress monitoring system of the present invention;

FIG. 5 is a front view of the configuration of an inclination monitoring subsystem of the system for monitoring the settlement of a transformer substation and the stress of an electric pole according to the present invention;

FIG. 6 is a front view of a structural support stress-strain monitoring subsystem of a transformer substation settlement and pole stress monitoring system of the present invention;

fig. 7 is a layout top view of a satellite positioning monitoring subsystem of the transformer substation settlement and pole stress monitoring system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, the invention provides a transformer substation settlement and pole stress monitoring system, which comprises an in-station settlement monitoring subsystem 1, a tower pole and surrounding soil uneven settlement monitoring subsystem 2, an inclination monitoring subsystem 3, a support stress-strain monitoring subsystem 4, a satellite positioning monitoring subsystem 5, a data management and display subsystem 6 and a structure safety assessment and early warning subsystem 7.

The in-station settlement monitoring subsystem 1, the tower pole and surrounding soil body uneven settlement monitoring subsystem 2, the inclination monitoring subsystem 3, the structural support stress and strain monitoring subsystem 4 and the satellite positioning monitoring subsystem 5 are in signal connection with the data management and display subsystem 6, and the data management and display subsystem 6 is in signal connection with the structure safety assessment and early warning subsystem 7.

As shown in fig. 2 in combination with fig. 1 and 3, the in-station settlement monitoring subsystem 1 includes an in-station settlement observation reference point 11, a plurality of fiber grating hydrostatic levels 12, and an in-station settlement fiber grating demodulator 13; a water tank 111 is arranged in the in-station settlement observation reference point 11, the bottom of the water tank 111 is communicated with the bottoms of the fiber grating type static level gauges 12 through pipelines, and the liquid levels in the water tank 111 and the fiber grating type static level gauges 12 are the same in height; the output end of the fiber grating type static level gauge 12 is in signal connection with the input end of an in-station settlement fiber grating demodulator 13; the output end of the in-station settlement fiber grating demodulator 13 is in signal connection with the input end of the data management and display subsystem 6. And the in-station settlement monitoring subsystem 1 is used for setting in-station settlement observation points at the boundary of the transformer substation, the tower pole, the bridge tower, the structure support and the house, monitoring the overall settlement trend of the transformer substation, acquiring settlement information of the in-station settlement observation points, and sending the monitored in-station settlement information to the data management and display subsystem 6.

Further, as can be seen from fig. 3, the fiber grating type static levels 12 are distributed at each node of the substation, each fiber grating type static level 12 forms an annular network through a pipeline, the heights of the fiber grating type static levels 12 are the same, and the liquid levels are also the same. The fiber grating type static level 12 comprises a fiber grating sensor 121, a connecting rod 122, a floating ball 123 and a temperature compensation grating 124, the top of the inner wall of the fiber grating type static level 12 is fixedly provided with the fiber grating sensor 121 and the temperature compensation grating 124, the fiber grating sensor 121 is connected with the top surface of the connecting rod 122, the floating ball 123 is arranged at the bottom of the connecting rod 122, and the output ends of the fiber grating sensor 121 and the temperature compensation grating 124 are in signal connection with the input end of the in-station settlement fiber grating demodulator 13. The fiber grating static level 12 can comprehensively monitor the settlement conditions near the buildings, cable ducts and power towers of the transformer substation; when the fiber grating type static level 12 moves in the vertical direction, the liquid level height remains unchanged, but the pressure applied to the floating ball 123 changes, and the fiber grating type static level 12 measures the settlement change of the point.

As shown in fig. 4 in combination with fig. 1, the tower pole and surrounding soil body differential settlement monitoring subsystem 2 includes a plurality of tower poles 21, a plurality of fiber bragg grating tension displacement meters 22 and a tower pole fiber bragg grating demodulator 23, the bottom of the tower pole 21 is provided with a grounding switch hoop 20, one end of the fiber bragg grating tension displacement meter 22 is fixed on the grounding switch hoop 20, and the other end of the fiber bragg grating tension displacement meter 22 is fixed at one end of the cable embedded backfill soil; the output end of the fiber bragg grating tension displacement meter 22 is in signal connection with the input end of the tower rod fiber bragg grating demodulator 23; the output end of the tower rod fiber grating demodulator 23 is in signal connection with the input end of the data management and display subsystem 6. The tower pole 21 is used for supporting the cable, the tower pole 21 adopts a pile foundation, the settlement is small, but the backfill soil around the tower pole 21 has large settlement, the settlement degree of the tower pole and the surrounding soil body is not uniform, and the cable buried in the soil body has the possibility of being stretched and even being broken. Therefore, the degree of stretching of the cable needs to be monitored. Typically two cables are monitored per tower 21.

As shown in fig. 5 in combination with fig. 1, the inclination monitoring subsystem 3 includes a bridge tower 31, a plurality of fiber grating inclinometers 32 and an inclination fiber grating demodulator 33, wherein the fiber grating inclinometers 32 are fixedly disposed on a top beam of the bridge tower 31; the output end of the fiber grating inclinometer 32 is in signal connection with the input end of the fiber grating inclinometer 33; the output end of the tilt fiber grating demodulator 33 is in signal connection with the input end of the data management and display subsystem 6. The inclination monitoring subsystem 3 is used for monitoring the inclination degree of the bridge tower 31 caused by the settlement, and obtaining the inclination degree of the bridge tower 31 affected by the settlement.

As shown in fig. 6 in combination with fig. 1, the frame stress-strain monitoring subsystem 4 includes a plurality of frames 41, a plurality of frames 42, a plurality of bottom fiber grating surface strain gauges 43, a plurality of side fiber grating surface strain gauges 44, and a frame stress fiber grating demodulator 45, where the frames 41 and the frames 42 both extend vertically upward along the vertical direction; two bottom fiber grating surface strain gauges 43 are symmetrically arranged on a concrete foundation at the bottom of the framework 41, the bottom fiber grating surface strain gauges 43 are vertically arranged on the concrete foundation at the bottom of the framework 41, and two side fiber grating surface strain gauges 44 are symmetrically arranged on the side surfaces of the framework 41; a lateral fiber grating surface strain gauge 44 is arranged on a steel frame at the top of the bracket 42; the output ends of the bottom fiber grating surface strain gauge 43 and the side fiber grating surface strain gauge 44 are in signal connection with the input end of a frame stress fiber grating demodulator 45; the output end of the framework stress fiber grating demodulator 45 is in signal connection with the input end of the data management and display subsystem 6. The framework and the support in the transformer substation are mainly concrete columns, when the framework or the support is unevenly settled, stress changes of the concrete columns and an upper steel frame can be caused, the stress exceeds a certain range, the changes of the structures of the concrete columns or the upper steel frame can be caused, normal operation of the transformer substation is influenced, and the stress-strain condition of the transformer substation must be monitored.

As shown in fig. 7 in combination with fig. 1, the satellite positioning monitoring subsystem 5 includes an off-site GNSS satellite positioning monitoring station 51 and a plurality of in-site GNSS satellite positioning monitoring stations 52, the off-site GNSS satellite positioning monitoring station 51 is disposed in a geological stable region outside the substation, and the in-site GNSS satellite positioning monitoring station 52 is disposed in the substation; the output end of the off-site GNSS satellite positioning monitoring station 51 and the output end of the on-site GNSS satellite positioning monitoring station 52 are both connected with the input end of the data management and display subsystem 6 through signals. The satellite positioning monitoring subsystem 5 adopts a GNSS integrated monitoring station for monitoring, and can carry out quantitative analysis on the elevation change and the deformation in the horizontal direction of the settlement area.

As shown in fig. 1, the data management and display subsystem 6 includes a data acquisition module 61, a data classification and extraction module 62, a data storage module 63 and a user UI module 64, wherein the input end of the data acquisition module 61 is respectively connected with the output ends of the in-station settlement monitoring subsystem 1, the tower and surrounding soil uneven settlement monitoring subsystem 2, the inclination monitoring subsystem 3, the support stress-strain monitoring subsystem 4 and the satellite positioning monitoring subsystem 5 through signals; the output end of the data acquisition module 61 is in signal connection with the input end of the data classification and extraction module 62; the output end of the data classification and extraction module 62 is in signal connection with the input end of the data storage module 63; the data storage module 63 bi-directionally communicates with the user UI module 64; the output end of the data storage module 63 is in signal connection with the input end of the structural safety assessment and early warning subsystem 7; the input of the user UI module 64 is also in signal connection with the output of the data acquisition module 61. The data management and display subsystem 6 can comprehensively process the monitoring information collected and uploaded by each monitoring subsystem, completes the functions of data classification filing, inquiry, storage and the like, displays the monitoring information to users, and in addition, the organized data is subjected to settlement and transformer substation safety state evaluation by the structure safety assessment and early warning subsystem 7, so that the users are assisted to provide scientific decisions or inform the users to respond in time, and technical support is provided for realizing transformer substation safe operation.

The user UI module 64 can call historical sensor data in the data storage module 63, control information can be sent to the data acquisition module 61, sensor data of a specific detection subsystem can be directly acquired, data visualization tools such as Javascript-based data visualization tools are arranged in the user UI module 64, historical data of all detection subsystems can be conveniently visually edited and displayed to a user in a chart mode, and accordingly diversified functions of historical data viewing, manual inspection, auxiliary scientific decision making, alarm information processing and the like are achieved. In addition, an external communication port can be configured for the user UI module 64, so that the invention is further expanded, and remote communication and remote monitoring are realized. The user UI module 64 allows a designated user to access through the mobile terminal, thereby enabling unattended monitoring of the site.

As shown in fig. 1, the structural safety assessment and early warning subsystem 7 includes a structural evaluation module 71, a structural safety control aid decision module 72 and an automatic early warning module 73, an input end of the structural evaluation module 71 is in signal connection with an output end of the data storage module 63, and an output end of the structural evaluation module 71 is in signal connection with an input end of the structural safety control aid decision module 72; the output end of the structure safety control aid decision-making module 72 is in signal connection with the input end of the automatic early warning module 73, and the output end of the automatic early warning module 73 is in signal connection with the data storage module 63 and the user UI module 64 respectively.

The invention also provides a use method of the transformer substation settlement and pole stress monitoring system, which comprises the following steps:

s1: configuring an in-station settlement monitoring subsystem 1: installing in-station settlement observation reference points 11, densely arranging fiber grating type static leveling instruments 12 along a transformer substation structure building and a settlement area, ensuring that each fiber grating type static leveling instrument 12 is located at the same elevation with the in-station settlement observation reference points 11 after being installed, and constructing an equal-height in-station settlement monitoring area; the top of the inner wall of the fiber grating type static level 12 is fixedly provided with a fiber grating sensor 121 and a temperature compensation grating 124, the fiber grating sensor 121 is connected with the top surface of a connecting rod 122, the bottom of the connecting rod 122 is provided with a floating ball 123, the output ends of the fiber grating sensor 121 and the temperature compensation grating 124 are in signal connection with the input end of the in-station settlement fiber grating demodulator 13, and the output end of the in-station settlement fiber grating demodulator 13 is in data management and signal connection with the input end of the display subsystem 6; the bottom of a water tank 111 in the in-station settlement observation reference point 11 is communicated with the bottoms of the fiber grating static level meters 12 through pipelines, liquid is slowly and uniformly filled into the water tank 111, air in the pipelines is completely removed, and air bubbles are removed, so that the liquid levels in the water tank 111 and the fiber grating static level meters 12 are the same in height; after the configuration is finished, acquiring and uploading initial settlement information of the arrangement points of each fiber grating type static level 12;

s2: a tower pole and surrounding soil body uneven settlement monitoring subsystem 2 is configured: arranging an earthing switch hoop 20 at the bottom of the tower pole 21, fixing one end of a fiber grating tension displacement meter 22 on the earthing switch hoop 20, and fixing the other end of the fiber grating tension displacement meter 22 at one end of the cable embedded backfill; the output end of the fiber bragg grating tension displacement meter 22 is in signal connection with the input end of the tower rod fiber bragg grating demodulator 23; the output end of the tower pole fiber grating demodulator 23 is in signal connection with the input end of the data management and display subsystem 6; after configuration is finished, collecting and uploading initial tension information to the arrangement points of the fiber bragg grating tension displacement meters 22;

s3: configuring the tilt monitoring subsystem 3: a fiber grating inclinometer 32 is fixedly arranged on a cross beam at the top of the bridge tower 31, so that a horizontal bubble of the fiber grating inclinometer 32 is positioned in the middle position; the output end of the fiber grating inclinometer 32 is in signal connection with the input end of the fiber grating inclinometer 33; the output end of the tilt angle fiber grating demodulator 33 is in signal connection with the input end of the data management and display subsystem 6; after the configuration is finished, acquiring and uploading initial tilt information of the arrangement points of each fiber grating type inclinometer 32;

s4: configuring a structural support stress-strain monitoring subsystem 4: symmetrically arranging two bottom fiber grating surface strain gauges 43 on the concrete foundation at the bottom of each framework 41, polishing and leveling the concrete foundation on which the bottom fiber grating surface strain gauge 43 is arranged, and vertically fixing the bottom fiber grating surface strain gauge 43 on the concrete foundation at the bottom of the framework 41; two side fiber grating surface strain gauges 44 are symmetrically arranged on the side surface of each framework 41; a lateral fiber grating surface strain gauge 44 is arranged on a steel frame at the top of the bracket 42; the output ends of the bottom fiber grating surface strain gauges 43 and the side fiber grating surface strain gauges 44 are in signal connection with the input end of a frame stress fiber grating demodulator 45; the output end of the framework stress fiber grating demodulator 45 is in signal connection with the input end of the data management and display subsystem 6; after the configuration is finished, acquiring and uploading initial stress information of the bottom fiber grating surface strain gauge 43 and the side fiber grating surface strain gauge 44 on each framework 41 and the side fiber grating surface strain gauge 44 arranged on the steel frame at the top of the bracket 42;

s5: configuring a satellite positioning monitoring subsystem 5: arranging an off-site GNSS satellite positioning monitoring station 51 in a stable area outside a transformer substation, and arranging a plurality of in-site GNSS satellite positioning monitoring stations 52 in the transformer substation, wherein the in-site GNSS satellite positioning monitoring station 52 is arranged on the side surface of an internal settlement observation reference point 11; the output end of the off-site GNSS satellite positioning monitoring station 51 and the output end of the on-site GNSS satellite positioning monitoring station 52 are in signal connection with the input end of the data management and display subsystem 6; after configuration is completed, the off-site GNSS satellite positioning monitoring station 51 and the in-site GNSS satellite positioning monitoring station 52 respectively acquire and upload initial satellite positioning information;

s6: data acquisition and analysis: uploading the initial settlement information, the initial tension information, the initial inclination information, the initial stress information and the initial satellite positioning information acquired in the above steps to a data acquisition module 61 of the data management and display subsystem 6, after data verification is performed on the data acquisition module 61, the data are classified by a data classification and extraction module 62, and then the data are transmitted to a data storage module 63 to be stored as initial monitoring information;

a data acquisition module 61 of a data management and display subsystem 6 periodically controls the current monitoring information of a settlement monitoring subsystem 1, a tower pole and surrounding soil body uneven settlement monitoring subsystem 2, an inclination monitoring subsystem 3, a support stress-strain monitoring subsystem 4 and a satellite positioning monitoring subsystem 5 in a station, collects the current monitoring information of the subsystems and collects the current monitoring information into the data acquisition module 61 for data verification, the data verified is transmitted to a data classification and extraction module 62 by the data acquisition module 61, the data classification and extraction module 62 classifies the current monitoring information according to the types of the subsystems, and the classified current monitoring information is transmitted to a data storage module 63 by the data classification and extraction module 62; on one hand, the data storage module 63 archives the current monitoring information, and on the other hand, the data storage module 63 sends the current monitoring information to the user UI module 64 and the structure evaluation module 71 of the structure safety assessment and early warning subsystem 7;

s7: and (3) structural safety assessment and early warning: after receiving the current monitoring information sent by the data storage module 63, the structure evaluation module 71 of the structure safety assessment and early warning subsystem 7 compares and preliminarily analyzes the current monitoring information and the initial monitoring information, and judges whether the current monitoring information exceeds a set safety threshold, the structure evaluation module 71 sends the current monitoring information and the judgment result to the structure safety control auxiliary decision module 72, the structure safety control auxiliary decision module 72 identifies risks and makes auxiliary decision reference information, the structure safety control auxiliary decision module 72 sends the auxiliary decision reference information to the automatic early warning module 73, and the automatic early warning module 73 sends the auxiliary decision reference information to the data storage module 63 and the user UI module 64 respectively; the data management and display subsystem 6 and the structural safety assessment and early warning subsystem 7 repeatedly execute the steps S6-S7 according to set time to carry out daily monitoring;

s8: data visualization and daily maintenance: the user UI module 64 calls historical data in the data storage module 63 according to the current monitoring information and the current decision-making assisting reference information sent by the data storage module 63 and the automatic early warning module 73, and generates a visual chart supporting interaction by using a data visualization tool, wherein the visual chart provides a user with a visual transformer substation settlement and pole stress variation trend in a more visual manner, so that the user can visually and timely know the settlement and stress variation conditions, and assist the user in making a decision.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A transformer substation settlement and electric pole stress monitoring system comprises an in-station settlement monitoring subsystem (1), a tower and surrounding soil uneven settlement monitoring subsystem (2), an inclination monitoring subsystem (3), a support stress-strain monitoring subsystem (4), a satellite positioning monitoring subsystem (5), a data management and display subsystem (6) and a structure safety assessment and early warning subsystem (7), wherein the in-station settlement monitoring subsystem (1), the tower and surrounding soil uneven settlement monitoring subsystem (2), the inclination monitoring subsystem (3), the support stress-strain monitoring subsystem (4) and the satellite positioning monitoring subsystem (5) are in signal connection with the data management and display subsystem (6), and the data management and display subsystem (6) is in signal connection with the structure safety assessment and early warning subsystem (7); the method is characterized in that:

the structure safety assessment and early warning subsystem (7) is used for receiving monitoring information sent by the data management and display subsystem (6), identifying risks, making auxiliary decision reference information, feeding the auxiliary decision reference information back to the data management and display subsystem (6), and storing and outputting the auxiliary decision reference information by the data management and display subsystem (6);

the in-station settlement monitoring subsystem (1) comprises an in-station settlement observation reference point (11), a plurality of fiber grating type static level gauges (12) and an in-station settlement fiber grating demodulator (13); a water tank (111) is arranged in the in-station settlement observation reference point (11), the bottom of the water tank (111) is communicated with the bottoms of the fiber grating type static level gauges (12) through pipelines, and the liquid levels in the water tank (111) and the fiber grating type static level gauges (12) are the same in height; the output end of the fiber grating type static level gauge (12) is in signal connection with the input end of an in-station settlement fiber grating demodulator (13); the output end of the in-station settlement fiber grating demodulator (13) is in signal connection with the input end of the data management and display subsystem (6); the fiber grating type static level gauge (12) comprises a fiber grating sensor (121), a connecting rod (122), a floating ball (123) and a temperature compensation grating (124), the top of the inner wall of the fiber grating type static level gauge (12) is fixedly provided with the fiber grating sensor (121) and the temperature compensation grating (124), the fiber grating sensor (121) is connected with the top surface of the connecting rod (122), the bottom of the connecting rod (122) is provided with the floating ball (123), and the output ends of the fiber grating sensor (121) and the temperature compensation grating (124) are in signal connection with the input end of the in-station settlement fiber grating demodulator (13); the fiber grating type static level gauge (12) monitors the settlement of a building, a cable trench and a power tower pole of a transformer substation;

the tower pole and surrounding soil body differential settlement monitoring subsystem (2) comprises a plurality of tower poles (21), a plurality of fiber bragg grating tension displacement meters (22) and a tower pole fiber bragg grating demodulator (23), wherein the bottom of each tower pole (21) is provided with a grounding switch hoop (20) and a buried cable, one end of each fiber bragg grating tension displacement meter (22) is fixed on the grounding switch hoop (20), and the other end of each fiber bragg grating tension displacement meter (22) is fixed at one end, embedded into backfill soil, of the buried cable; the output end of the fiber bragg grating tension displacement meter (22) is in signal connection with the input end of the tower rod fiber bragg grating demodulator (23); the output end of the tower rod fiber grating demodulator (23) is in signal connection with the input end of the data management and display subsystem (6); monitoring the tension of the two cables of each tower pole (21);

the inclination monitoring subsystem (3) comprises a bridge tower (31), a plurality of fiber grating type inclinometers (32) and an inclination fiber grating demodulator (33), wherein the fiber grating type inclinometers (32) are fixedly arranged on a cross beam at the top of the bridge tower (31); the output end of the fiber bragg grating inclinometer (32) is in signal connection with the input end of the fiber bragg grating demodulator (33); the output end of the tilt angle fiber grating demodulator (33) is in signal connection with the input end of the data management and display subsystem (6); the inclination monitoring subsystem (3) is used for monitoring the inclination degree of the bridge tower (31) caused by settlement;

the framework and support stress-strain monitoring subsystem (4) comprises a plurality of frameworks (41), a plurality of supports (42), a plurality of bottom fiber grating surface strain gauges (43), a plurality of side fiber grating surface strain gauges (44) and a framework and support stress fiber grating demodulator (45), wherein the frameworks (41) and the supports (42) vertically extend upwards along the vertical direction; two bottom fiber grating surface strain gauges (43) are symmetrically arranged on a concrete foundation at the bottom of the framework (41), the bottom fiber grating surface strain gauges (43) are vertically arranged on the concrete foundation at the bottom of the framework (41), and two side fiber grating surface strain gauges (44) are symmetrically arranged on the side surface of the framework (41); a lateral fiber grating surface strain gauge (44) is arranged on a steel frame at the top of the bracket (42); the output ends of the bottom fiber grating surface strain gauge (43) and the side fiber grating surface strain gauge (44) are in signal connection with the input end of a structural support stress fiber grating demodulator (45); the output end of the framework stress fiber grating demodulator (45) is in signal connection with the input end of the data management and display subsystem (6); the framework and support stress-strain monitoring subsystem (4) monitors the stress-strain conditions of the framework (41) and the support (42);

the satellite positioning monitoring subsystem (5) comprises an off-station GNSS satellite positioning monitoring station (51) and a plurality of in-station GNSS satellite positioning monitoring stations (52), wherein the off-station GNSS satellite positioning monitoring station (51) is arranged in a geological stable area outside the transformer substation, the in-station GNSS satellite positioning monitoring station (52) is arranged in the transformer substation, and one in-station GNSS satellite positioning monitoring station (52) is arranged on the side surface of an in-station settlement observation reference point (11); the output end of the off-site GNSS satellite positioning monitoring station (51) and the output end of the on-site GNSS satellite positioning monitoring station (52) are in signal connection with the input end of the data management and display subsystem (6).

2. The transformer substation settlement and pole stress monitoring system of claim 1, wherein: the data management and display subsystem (6) comprises a data acquisition module (61), a data classification and extraction module (62), a data storage module (63) and a user UI module (64), wherein the input end of the data acquisition module (61) is respectively in signal connection with the output ends of the in-station settlement monitoring subsystem (1), the tower and surrounding soil uneven settlement monitoring subsystem (2), the inclination monitoring subsystem (3), the support stress-strain monitoring subsystem (4) and the satellite positioning monitoring subsystem (5); the output end of the data acquisition module (61) is in signal connection with the input end of the data classification and extraction module (62); the output end of the data classification and extraction module (62) is in signal connection with the input end of the data storage module (63); the data storage module (63) is in bidirectional communication with the user UI module (64); the output end of the data storage module (63) is in signal connection with the input end of the structural safety assessment and early warning subsystem (7); the input end of the user UI module (64) is also in signal connection with the output end of the data acquisition module (61).

3. The transformer substation settlement and pole stress monitoring system of claim 2, wherein: the structure safety assessment and early warning subsystem (7) comprises a structure assessment module (71), a structure safety control auxiliary decision-making module (72) and an automatic early warning module (73), wherein the input end of the structure assessment module (71) is in signal connection with the output end of the data storage module (63), and the output end of the structure assessment module (71) is in signal connection with the input end of the structure safety control auxiliary decision-making module (72); the output end of the structure safety control auxiliary decision-making module (72) is in signal connection with the input end of the automatic early warning module (73), and the output end of the automatic early warning module (73) is in signal connection with the data storage module (63) and the user UI module (64) respectively.

4. A use method of a transformer substation settlement and pole stress monitoring system comprises the following steps: