CN106500586A - One kind is using wind tunnel experiment analog insulation substring windage yaw angle measuring system and method - Google Patents

Abstract

The invention discloses a kind of utilize wind tunnel experiment analog insulation substring windage yaw angle measuring system and method, including：Wind-tunnel, ventilation unit, at least three shaft tower insulator chain models, angle of wind deflection monitoring modular and long-range monitoring platform；The wind-tunnel includes wind tunnel noumenon, is sequentially provided with entrance, power section, changeover portion, stable section, contraction section, experimental section and diffuser on wind tunnel noumenon；Power section of the ventilation unit installed in wind tunnel noumenon；Experimental section of the shaft tower insulator chain model installed in wind tunnel noumenon；The angle of wind deflection monitoring modular on the shaft tower insulator chain model, real-time monitoring insulator chain windage yaw angular data, and long-range monitoring platform is sent to by wireless-transmission network is processed.The present invention directly can carry out the measurement of angle of wind deflection using wind-tunnel come modeling wind field, be tested without building actual electric power line pole tower, and can ensure that and obtain accurately experimental result.

Description

A system and method for measuring wind deflection angle of insulator strings simulated by wind tunnel experiment

technical field

The invention relates to the technical field of high-voltage insulator tests, in particular to a system and method for measuring wind deflection angles of insulator strings simulated by wind tunnel experiments.

Background technique

The wind deflection discharge of insulator strings in transmission lines has always been one of the problems that affect the stable operation of the line. Different from trips caused by other reasons such as lightning strikes, the possibility of successful closing is not high after a wind deflection trip occurs on the line, which will cause great losses to the power supply system. According to the experience of relevant scholars for many years of research, the causes of wind deflection can be divided into internal and external factors. The internal cause is due to the insulator string's own insufficient level of resistance to wind deflection, and the external cause is caused by strong winds and harsh weather conditions. The mechanism of wind deflection discharge is: under the condition of strong wind, the insulator string will be moved towards the tower due to the action of wind force, forming an angle with the vertical direction, which is the wind deflection angle. The wind deflection angle depends on factors such as wind speed, insulator string and wire weight. When it reaches a certain level, since the distance between the insulator string and the tower is smaller than the air gap during normal operation, breakdown discharge occurs in the air gap under power frequency voltage. .

Since more and more high-voltage, long-distance, and large-span transmission lines are now in operation, when the problem of wind deflection discharge cannot be completely solved today, in order to ensure the safe and stable operation of the transmission line, it is necessary to do a good job in the transmission line. Wind deflection monitoring of insulator strings, and the most important thing for wind deflection monitoring of insulator strings is to measure the size of the wind deflection angle, and then deduce whether the air gap between the insulator strings and the tower meets the requirements according to the formula. At present, two methods are generally used to detect the wind deflection angle of insulator strings. One is to measure by installing an inclination sensor on the suspended composite insulator string. In this method, the sensor can only be installed on the upper part of the insulator string. For live parts, when only the insulator at the bottom end has a large offset, but at this time the insulator string is not close to the tower and wind deflection discharge does not occur, it will cause false alarms and it is difficult to give an accurate warning. The other is to measure the wind speed, wind direction, temperature, humidity and other parameters near the insulator string, and use the wind angle calculation formula to calculate the wind angle. This method is restricted by the accuracy of the sensor and the selected mathematical model, and the mathematical model cannot be completely All kinds of parameters affecting the wind deflection are considered in detail, and there are certain errors. The above two methods must be carried out at the tower of the actual transmission line, which is extremely inconvenient to operate and has certain dangers.

To sum up, there are some problems in the existing methods of measuring the wind angle of insulators, so a simpler, more convenient and reliable method must be found.

Contents of the invention

In view of the above problems, the present invention proposes a system and method for measuring the wind deflection angle of insulator series by using wind tunnel experiments, which can directly use the wind tunnel to simulate the wind field to measure the wind deflection angle, without the need to build actual transmission line towers for experiments , and can guarantee accurate experimental results.

Realize above-mentioned technical purpose, reach above-mentioned technical effect, the present invention realizes through the following technical solutions:

A measurement system for simulating wind angles of insulator strings using wind tunnel experiments, characterized in that it includes: a wind tunnel, a ventilation device, at least three tower insulator string models, a wind angle monitoring module and a remote monitoring platform; the wind tunnel Including the wind tunnel body, the wind tunnel body is sequentially provided with an inlet, a power section, a transition section, a stable section, a contraction section, an experimental section and a diffusion section; the ventilation device is installed on the power section of the wind tunnel body; the tower insulator The string models are installed in the experimental section of the wind tunnel body, wherein the adjacent tower insulator string models are connected by wires, and the tower insulator string models are installed in the experimental section of the wind tunnel body at transverse intervals; the wind angle monitoring module is installed On the tower insulator string model, real-time monitoring of insulator string wind deflection data is sent to the remote monitoring platform for processing through the wireless transmission network.

As a further improvement of the present invention, the wind angle monitoring module includes an acceleration sensor, a sensor signal conditioning circuit, and a radio frequency circuit that are electrically connected in sequence. After the acceleration sensor transmits the collected data to the sensor signal conditioning circuit for preprocessing, the RF circuit sends out.

As a further improvement of the present invention, the wind angle monitoring module is installed at the bottom of the tower insulator string model.

As a further improvement of the present invention, the measurement system for simulating the wind deflection angle of insulator strings through wind tunnel experiments also includes a convergence node, which includes a coordinator and a wireless transmission module; the coordinator is used to pack the The radio frequency circuit sends the insulator string wind deflection data to the sink node, and sends it to the wireless transmission module after protocol conversion. The wireless transmission module is used to send the received insulator string wind deflection data to the remote monitoring platform through the wireless transmission network for processing .

As a further improvement of the present invention, the tower insulator string model includes a tower, a wire and an insulator string, and the wire is connected to the tower through the insulator string.

As a further improvement of the present invention, when the number of tower insulator string models is 3, adjacent tower insulator string models are connected by wires, and each tower insulator string model is installed laterally in the experimental section of the wind tunnel body.

As a further improvement of the present invention, the ventilation device is an axial flow fan driven by a variable frequency three-phase asynchronous motor.

A method for measuring the wind deflection angle of insulator strings simulated by wind tunnel experiments, comprising the following steps:

(1) Place the tower insulator string model horizontally in the experimental section of the wind tunnel body, and install the wind angle monitoring module on the tower insulator string model;

(2) Start the ventilation device located in the power section of the wind tunnel body to generate a wind field;

(3) The artificial wind in the wind field passes through the transition section, the stable section, and the contraction section of the wind tunnel body in sequence to form a stable wind, and the stable wind blows across the pole-tower insulator string model to form a wind deflection angle;

(4) The acceleration sensor in the wind angle monitoring module measures and outputs a voltage signal, and the output voltage signal is obtained by the improved angle algorithm to obtain the corresponding angle data, and then the obtained angle data is input to the sensor signal conditioning circuit for preprocessing Obtain the angle information of the wind angle; the radio frequency circuit transmits the angle information of the wind angle after preprocessing to the remote monitoring platform through the wireless transmission network;

(5) Finally, the remote monitoring platform analyzes and processes the angle information of the received wind angle, and eliminates abnormal data, so as to obtain accurate experimental results.

As a further improvement of the present invention, in the step (4), the radio frequency circuit transmits the angle information of the preprocessed windage angle to the remote monitoring platform through a wireless transmission network, specifically: the radio frequency circuit transmits the angle information of the preprocessed windage angle The information is transmitted to the aggregation node, and the coordinator in the aggregation node packages the angle information data of the wind angle and sends it to the wireless transmission module through protocol conversion, and then sends it to the remote monitoring platform through the base station through the wireless transmission module.

As a further improvement of the present invention, the wireless transmission module is a GPRS communication module; the radio frequency circuit is a ZigBee radio frequency circuit.

Beneficial effects of the present invention:

The invention proposes a system and method for simulating the wind deflection angle measurement of insulator strings by using wind tunnel experiments, which can directly use the wind tunnel to simulate the wind field to measure the wind deflection angle without building actual transmission line poles and towers for experiments, and can ensure Obtain accurate experimental results, easy to operate, no danger.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a DC down-blowing wind tunnel according to an embodiment of the present invention;

Fig. 2 is the model schematic diagram of an embodiment of the present invention by three common linear towers, wire and insulator string;

Fig. 3 is a schematic diagram of an acceleration sensor measuring insulator string wind deflection angle according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure and composition of an insulator string windage measurement system according to an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-2, a measurement system for simulating the wind deflection angle of an insulator string by using a wind tunnel experiment, including: a wind tunnel, a ventilation device, at least one tower insulator string model, a wind deflection angle monitoring module, and a remote monitoring platform; Described wind tunnel comprises wind tunnel body, is provided with inlet 11, power section 12, transition section 13, stable section 14, contraction section 15, experiment section 16 and diffusion section 17 in turn on wind tunnel body; Described ventilation device 18 is installed in The power section 12 of the wind tunnel body; the tower insulator string model 19 is installed in the experimental section 16 of the wind tunnel body, wherein the adjacent tower insulator string models are connected by wires, and each tower insulator string model is installed at a horizontal interval in the wind tunnel. The experimental section of the tunnel body; the wind angle monitoring module is installed on the tower insulator string model 19 to monitor the wind angle data of the insulator string in real time, and send it to the remote monitoring platform 47 for processing through the wireless transmission network.

Among them, the power section 12: provides air source for the wind tunnel, and is composed of an axial flow fan driven by a frequency conversion three-phase asynchronous motor. The motor obtains different wind speed and airflow through frequency conversion and speed regulation; the transition section 13: is to ensure the stability of the experimental section Auxiliary structure designed for aerodynamic performance; stable section 14 is composed of anechoic wall, birdcage air inlet, honeycomb, damping net, and the airflow is arranged into a horizontal ideal flow field through stable section 14 and contraction section 15; experimental section 16: A place for placing tower insulator models for wind deflection experiments; diffusion section 17: allowing the gas flowing out of the experimental section to exit the wind tunnel through the diffusion section.

In one embodiment of the present invention, the wind tunnel is a direct current down-blown wind tunnel, which also includes a drive system and a measurement control system; the remote monitoring platform mainly includes a man-machine interface, a TCP server part and a database part.

As shown in Figure 3, the windage angle monitoring module includes an acceleration sensor 41, a sensor signal conditioning circuit 42 and a radio frequency circuit electrically connected in sequence, and the voltage signal measured and output by the acceleration sensor can calculate the angle data through an improved angle algorithm , and then transmit the obtained angle data to the sensor signal conditioning circuit for preprocessing, and then send it out by the radio frequency circuit 43 . Preferably, the radio frequency circuit adopts Zigbee chip CC2530F256; in one embodiment of the present invention, the wind angle monitoring module also includes a power supply and a voltage stabilizing circuit for power supply, and the voltage stabilizing circuit is arranged between the power supply and the radio frequency circuit Between, used to ensure the stability of the entire system power supply. The wind angle monitoring module is also called the terminal monitoring node.

In the present invention, the windage angle monitoring module is installed at the bottom of the tower insulator string model 19, preferably, is installed at the bottom of the insulator string through a ball joint link (more preferably, the windage angle monitoring module is installed at the bottom of the insulator string not Located on the tower insulator string model at the extreme end), it rotates with the rotation of the insulator string. In one embodiment of the present invention, the acceleration sensor adopts the acceleration sensor model SCA100T-D02, and the SCA100T-D02 sensor is an acceleration sensor based on 3D-MEMS technology, which has low temperature influence, high resolution, low Instrument-level performance such as strong noise and anti-interference ability. The measurement axis of the sensing unit inside the sensor is parallel to the horizontal and vertical planes respectively, and can be used for horizontal and vertical measurement (this type of acceleration sensor itself has the function of horizontal and vertical measurement, and its measurement details will not be repeated here. ).

As shown in Fig. 4, described a kind of measuring system utilizing wind tunnel experiment simulation insulator string wind deflection angle also comprises converging node, and described converging node comprises coordinator 44, wireless transmission module 45; Described coordinator 44 uses To pack the insulator string wind angle data sent to the sink node by the radio frequency circuit, and send it to the wireless transmission module 45 after protocol conversion, and the wireless transmission module 45 is used to send the received insulator string wind angle data to the The remote monitoring platform 47 is processed. In one embodiment of the present invention, the convergence node also includes a power supply for power supply and a voltage stabilizing circuit, and the voltage stabilizing circuit is arranged between the power supply, the coordinator and the wireless communication module, and the wireless communication module may be a GPRS communication circuit Module, SIM900A chip used by GPRS communication circuit module.

The tower insulator string model includes a tower 23 , a wire 22 and an insulator string 21 , and the wire 22 is connected to the tower 23 through the insulator string 21 .

When the number of tower insulator string models is 3, adjacent tower insulator string models are connected by wires, and each tower insulator string model is installed in the experimental section of the wind tunnel at intervals. In one embodiment of the present invention, three tower insulator string models are included, wherein the measuring device is installed at the bottom of the middle tower model insulator string. The use of three tower insulator string models is to better simulate the actual tower situation. For example, the tower models on both sides are used to hang the wires and simulate the stress on the wires.

In one embodiment of the present invention, the ventilation device is an axial-flow fan driven by a frequency-variable three-phase asynchronous motor for generating airflow; the wind speed can be changed by adjusting the input power of the motor.

A method for measuring the wind deflection angle of insulator strings simulated by wind tunnel experiments, comprising the following steps:

(1) Place the tower insulator string model horizontally in the experimental section of the wind tunnel body, and install the wind angle monitoring module on the tower insulator string model;

(2) Start the ventilation device located in the power section of the wind tunnel body to generate a wind field; simulate the dynamic wind cross blowing tower insulator string model;

(3) The artificial wind formed in the wind field passes through the transition section, the stable section, and the contraction section of the wind tunnel body in order to form a stable wind, and the stable wind blows across the tower insulator string model, resulting in the generation of insulator strings on the tower insulator string model Offset, the offset position forms a windage angle with the vertical direction; at this time, the acceleration sensor in the windage angle monitoring module installed on the ball head hanging ring starts to measure;

(4) The acceleration sensor in the wind angle monitoring module measures and outputs a voltage signal, and the output voltage signal is obtained by the improved angle algorithm to obtain the corresponding angle data, and then the obtained angle data is input to the sensor signal conditioning circuit for preprocessing Obtain the angle information of the wind angle; the radio frequency circuit transmits the angle information of the wind angle after preprocessing to the remote monitoring platform through the wireless transmission network;

The principle of wind angle measurement is: the acceleration sensor adopts 3D-MEMS technology, which has instrument-level performance. The voltage signal output by the acceleration sensor can be processed by an improved angle algorithm to calculate the angle information. The acceleration sensor can be used for both horizontal and vertical directions. In the measurement above, when the insulator string produces wind deflection, the angle θ ₂ formed by the wind deflection monitoring module on the ball-end hanging ring and the horizontal direction is actually equal to the wind deflection angle θ ₁ (see Figure 3 for details), which is based on mathematics The angle theory can be obtained, that is to say, the angle information of the wind angle can be directly reflected on the wind angle monitoring module.

The improved angle algorithm is an angle algorithm corrected by temperature compensation. Among them, the analog output of the SCA100T-D02 acceleration sensor is a voltage signal, and the analog output is converted into an actual angle value by formula (1):

In formula (1), V _out represents the analog output voltage value of the SCA100T-D02 sensor; V ₀ represents the analog output voltage value of the SCA100T-D02 sensor at 0°, generally 2.5V; K is the sensitivity of the SCA100T-D02 sensor , generally take 2V/g; the calculated α is the detection angle of SCA100T-D02.

In order to make the collected data more accurate, the algorithm provided by the acceleration sensor data sheet can be used to compensate the offset of the output angle caused by the temperature change. The algorithm combines the temperature information of the acceleration sensor and the temperature dependence curve to correct the measured angle; The algorithm can be expressed by formulas (2) and (3). Formula (2) is used to calculate the angle value to be compensated at different temperatures, and formula (3) is used to calculate the actual angle value after compensation.

Δα＝-6×10 ^-7 *T ³ +10 ^-4 *T ² -3.9×10 ^-3 *T+0.0522 (2)

α'=α-Δα (3)

In formulas (2) and (3), T represents the temperature of the environment where the acceleration sensor is located, Δα represents the angle value that needs to be compensated at the corresponding temperature, and α is the angle value that has not been compensated and corrected, which is also passed through the formula (1 ), and α' is the angle value after compensation correction. That is, the final angle value α′ we get, that is, θ ₂ reflected in FIG. 3 , that is, the measured wind angle.

(5) Finally, the remote monitoring platform analyzes and processes the angle information of the received wind angle, and eliminates abnormal data, so as to obtain accurate experimental results.

In one embodiment of the present invention, in the step (4), the radio frequency circuit transmits the angle information of the calculated wind angle to the remote monitoring platform through a wireless transmission network, specifically: the radio frequency circuit transmits the calculated wind angle The angle information of the angle is transmitted to the aggregation node through the network formed by ZigBee self-organization, and the coordinator in the aggregation node packs the angle information data of the wind angle and sends it to the wireless transmission module through protocol conversion, and then sends it through the base station 46 through the wireless transmission module to the remote monitoring platform.

The aggregation node integrates a coordinator (preferably a ZigBee coordinator) and a GPRS communication module. The aggregation node of the wind angle monitoring system is responsible for linking the ZigBee wireless sensor network and the Internet network together, and realizes it on the basis of two network transmission protocols. The on-site monitoring data and the data interaction of the remote server are realized. Based on the ZigBee intelligent ad hoc network, combined with GPRS data communication, the insulator string wind angle monitoring system realizes real-time remote transmission of wind angle monitoring data.

In step (2), the ventilation device is an axial flow fan driven by a variable frequency three-phase asynchronous motor, which is used to provide a stable wind source, and the wind speed can be changed by adjusting the input power of the motor.

The wireless transmission module is a GPRS communication module; the radio frequency circuit is a ZigBee radio frequency circuit.

In summary:

A method of using wind tunnel experiments to simulate the measurement of insulator string wind deflection angle is implemented as follows:

1. After placing the tower insulator string model horizontally in the experimental section of the wind tunnel body, install the wind angle monitoring module integrated with the acceleration sensor, power supply voltage stabilization circuit, sensor signal conditioning circuit and ZigBee radio frequency transmission circuit on the ball head hanging ring. Check whether the relevant equipment is ready, such as: whether the tower insulator string model is placed reasonably, whether the relevant settings of the wind tunnel are reasonable, etc., make the insulator wind angle monitoring system in working condition and confirm that the remote monitoring platform can receive the acceleration sensor upload through the wireless network coming data.

2. Start the axial-flow fan driven by the variable frequency three-phase asynchronous motor located in the power section of the wind tunnel body as a stable wind source, and the fan starts to generate a wind field in the power section of the wind tunnel (the wind speed can be changed by adjusting the input power of the motor ); because the transition section can ensure the stable aerodynamic performance of the experimental section, and the airflow in the stable section and the contraction section will be organized into an ideal flow field, so when the wind blows to the insulator string on the tower insulator string model in the experimental section, it will be There will be an offset, forming the windage angle.

3. At this time, since the insulator wind angle monitoring system is in working condition, the voltage signal measured and output by the acceleration sensor in the wind angle monitoring module can be processed by the improved angle algorithm to calculate the angle data, and then the collected data is conditioned by the sensor signal The circuit is preprocessed, and then transmitted to the aggregation node through the network formed by ZigBee self-organization. The coordinator of the aggregation node packages the data and sends it to the GPRS communication module through protocol conversion, and then sends it to the remote monitoring platform through the GPRS communication network.

4. When the data collected by the wind angle monitoring module is transmitted to the remote monitoring platform, it can be stored in the server of the remote monitoring platform, and a database can be established to manage the data. During this process, some abnormal data should be processed and the experimental data should be saved at the same time The wind deflection angle obtained under reasonable conditions is guaranteed to correspond to the wind speed under the experimental conditions.

5. Change the input power of the variable frequency asynchronous motor to change the wind field generated by the axial flow fan, so that the wind load acting on the insulator string and the wire on the tower model changes, and the wind angle also changes. In this way, the corresponding insulator wind angles under different wind speeds can be measured multiple times. Finally, the data obtained from the experiment can be compared with the result obtained by the calculation formula, and it is found that the two are consistent, thus verifying the accuracy and reliability of the method.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. a kind of measuring system of utilization wind tunnel experiment analog insulation substring angle of wind deflection, it is characterised in that include：Wind-tunnel, ventilation Device, at least three shaft tower insulator chain models, angle of wind deflection monitoring modular and long-range monitoring platform；The wind-tunnel includes wind-tunnel sheet Body, is sequentially provided with entrance, power section, changeover portion, stable section, contraction section, experimental section and diffuser on wind tunnel noumenon；The ventilation Power section of the device installed in wind tunnel noumenon；Experimental section of the shaft tower insulator chain model installed in wind tunnel noumenon；The wind Drift angle monitoring modular is arranged on shaft tower insulator chain model, real-time monitoring insulator chain windage yaw angular data, and by wireless biography Defeated network is sent to long-range monitoring platform and is processed.

2. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 1, its feature It is：The angle of wind deflection monitoring modular includes acceleration transducer, sensor signal conditioning circuit and the radio frequency for sequentially electrically connecting Circuit, acceleration transducer carry out the data transfer for collecting to sensor signal conditioning circuit after pretreatment, by radio frequency electrical Road sends.

3. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 2, its feature It is：The angle of wind deflection monitoring modular is arranged on shaft tower insulator chain model bottom.

4. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 2, its feature It is：Also include aggregation node, the aggregation node includes coordinator, wireless transport module；The coordinator be used for packing by Radio circuit is sent to the insulator chain windage yaw angular data of aggregation node, and is sent to wireless transport module through protocol conversion, Wireless transport module is used for for the insulator chain windage yaw angular data for receiving being sent to long-range monitoring platform by wireless-transmission network Processed.

5. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 1, its feature It is：The shaft tower insulator chain model includes that shaft tower, wire and insulator chain, wire are connected with shaft tower by insulator chain.

6. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 5, its feature It is：When the quantity of shaft tower insulator chain model is 3, connected by wire between adjacent shaft tower insulator chain model, respectively Experimental section of the shaft tower insulator chain model lateral separation installed in wind tunnel noumenon.

7. the measuring system of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 1, its feature It is：The ventilation unit is the axial fan driven by frequency conversion threephase asynchronous machine.

8. a kind of measuring method of utilization wind tunnel experiment analog insulation substring angle of wind deflection, it is characterised in that comprise the following steps：

(1) shaft tower insulator chain model is placed horizontally in the experimental section of wind tunnel noumenon, while angle of wind deflection monitoring modular is installed On shaft tower insulator chain model；

(2) start the ventilation unit generation wind field for being located at wind tunnel noumenon power section；

(3) the artificial wind in wind field is sequentially through stable wind is formed after the changeover portion of wind tunnel noumenon, stable section, contraction section, surely The horizontal shaft tower insulator chain model that blows of fixed wind forms angle of wind deflection；

(4) the acceleration transducer measurement in angle of wind deflection monitoring modular output voltage signal, and the voltage signal for exporting is through changing Entering type angle algorithm and obtain corresponding angle-data, then the angle-data of gained is input to sensor signal conditioning circuit is carried out The angle information of angle of wind deflection is obtained after pretreatment；Radio circuit is by the angle information of angle of wind deflection after pretreatment by being wirelessly transferred net Network is transmitted to long-range monitoring platform；

(5) last long-range monitoring platform is analyzed process to the angle information of the angle of wind deflection for receiving, and excludes abnormal data, from And obtain accurate experimental result.

9. the measuring method of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 7, its feature It is：In step (4), the angle information of angle of wind deflection after pretreatment is transmitted to remote by radio circuit by wireless-transmission network Journey monitoring platform is specially：Radio circuit transmits the angle information of angle of wind deflection after pretreatment to aggregation node, in aggregation node Coordinator the Angle Information data of angle of wind deflection is packed and is sent to wireless transport module through protocol conversion, then by wireless Transport module is sent to long-range monitoring platform through base station.

10. the measuring method of a kind of utilization wind tunnel experiment analog insulation substring angle of wind deflection according to claim 7, its feature It is：The wireless transport module is GPRS communication modules；The radio circuit is ZigBee radio circuits.