CN108760527B - On-line monitoring equipment and monitoring method for self-ice melting wire embedded with heating material - Google Patents
On-line monitoring equipment and monitoring method for self-ice melting wire embedded with heating material Download PDFInfo
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- CN108760527B CN108760527B CN201810952699.XA CN201810952699A CN108760527B CN 108760527 B CN108760527 B CN 108760527B CN 201810952699 A CN201810952699 A CN 201810952699A CN 108760527 B CN108760527 B CN 108760527B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
On-line monitoring equipment and monitoring method for self-melting ice wires embedded with heating materials. The on-line monitoring equipment comprises a field wire sensing device, a simulated wire monitoring system and a simulated self-heating wire switch control part. The field wire sensing device comprises a tension sensing device and a temperature sensing device. The analog wire monitoring system comprises an analog wire fixing device, an analog self-heating wire, a program control switch, a temperature and tension sensor and a conditioning circuit, an analog wire mounting device, an analog wire microprocessor and an analog wire wireless communication module. The invention utilizes the simulated wire monitoring system to simulate the anti-icing, ice-melting and temperature-rising control power of the transmission line in three stages of anti-icing control power, ice-melting control power and temperature-rising control power. The heating power of the analog heating wire is controlled by controlling the duty ratio of the program control switch. According to the method, the running parameters of the power transmission line are accurately measured through simulation, the anti-icing and deicing control of the power transmission line is prejudged and analyzed, and the online anti-icing and deicing effect and efficiency are improved.
Description
Field of the art
The invention belongs to the field of online ice melting of power transmission lines, and particularly relates to online monitoring equipment and a monitoring method for a self-ice melting wire embedded with a heating material.
(II) background art
With the development of social economy, the requirements on exposed power lines are increasingly higher under the environment of continuously increasing power load application. In cold winter, the lines in many areas can be frozen, so that the lines are damaged. When icing exceeds the tolerance of the line, serious accidents such as broken lines and the like can occur. Therefore, deicing of the electric power transmission line in winter is indispensable and very important. In the prior art, the ice melting technology is continuously improved. Application number CN201610867150.1, self-made conductor and device for melting ice, and application number CN201810370549.8, self-made conductor and device for heating embedded in insulating heat conducting material, disclose two different types of online ice melting methods for power transmission lines, and the ice melting effect is greatly improved compared with the prior art. Application number CN201810886319.7, on-line anti-icing and ice-melting heat calculation method for power transmission line based on self-heating wire, discloses a heat calculation method for self-heating wire in the processes of temperature rise, ice melting and heat preservation in anti-icing and ice melting processes. However, in the process of anti-icing and deicing of the power transmission line, the running condition of the power transmission line needs to be monitored, and a reference is provided for control and prediction of the power transmission line. The invention provides a power transmission line parameter acquisition device and a monitoring method, which are used for prejudging and analyzing the anti-icing and deicing control of self-heating wires of the type related to a self-deicing conductor and deicing device of the invention patent CN201610867150.1 through simulating wires and simulating a control process, and controlling and monitoring the heat in the anti-icing, deicing and heat preservation processes of the self-heating wires disclosed in the power transmission line online anti-icing and deicing heat calculation method based on self-heating wires of the invention patent CN 201810886319.7. The term "heating" and "heating" in the present invention have the same meaning.
(III) summary of the invention
The invention aims to simulate the running condition of the self-deicing conductor disclosed in patent CN201610867150.1 'a self-deicing conductor and deicing equipment', simulate the wire control process and simulate the wire control parameter function, monitor the running condition of a power transmission line and provide reference for power transmission line control and prediction.
The aim of the invention is achieved in that:
the on-line monitoring equipment comprises a field wire sensing device, an analog wire monitoring system and an analog self-heating wire switch control part, and is communicated with the upper computer through a communication system.
The on-site wire sensing device consists of a tension sensing device and a temperature sensing device. The tension sensing device is arranged between the tower cross arm and the insulator, the tension born by the insulator is measured, the temperature sensor device is arranged on the electric transmission wire, and the temperature of the wire is measured; the tension sensing device consists of a tension sensor, a conditioning circuit, a tension sensing microprocessor and a tension wireless transmission module. The temperature sensor device is composed of a temperature sensor, a conditioning circuit, a temperature sensing microprocessor and a temperature wireless transmission module. The tension data measured by the field wire tension sensor and the conditioning circuit (6-0) are called on-line tension data; the on-site wire temperature sensor device is called on-line temperature data by the temperature sensor and the conditioning circuit (9-0).
The analog wire monitoring system consists of n analog wire fixing devices, n analog self-heating wires, n program-controlled switches, n temperature sensors and conditioning circuits, n tension sensors and conditioning circuits, an analog wire mounting device, an analog wire microprocessor, an analog wire wireless communication module and a power supply.
A plurality of simulation wire fixing devices are installed on the simulation wire installation device, and each simulation wire fixing device is correspondingly provided with a simulation self-heating wire and a program control switch.
n simulated self-heating wires are arranged on a rectangular connecting rod of the simulated wire fixing device; the inner conductor of the simulated self-heating wire is connected with the corresponding program-controlled switch, and the outer conductor is directly connected to the power supply.
The simulated temperature sensor and the conditioning circuit are correspondingly arranged on n simulated self-made heat conducting wires and are connected with the simulated wire microprocessor.
The tension sensor and the conditioning circuit are connected to the analog wire fixing device.
The simulated self-made wire-guiding switch control is a program-controlled switch system controlled by a microprocessor, the program-controlled switches are respectively connected with the simulated wire microprocessor, and each program-controlled switch is controlled by the simulated wire microprocessor; and under the control of the microprocessor of the simulated wire, the programmable switch enables the power supply to be in short circuit or open circuit with the inner conductor of the simulated self-heating wire.
The simulated wire installation device is installed in the same climatic environment and altitude as the monitored transmission line and is used for installing the simulated wire fixing device, the self-heating wire is an embedded heating material self-melting ice wire, and the length of the self-heating wire is determined according to the requirement.
The simulation wire fixing device comprises a fixing shell with a rectangular groove and a rectangular connecting rod, a tension sensor and a conditioning circuit are arranged in the rectangular groove, and the top of the fixing shell is fixed on the simulation wire mounting device; one end of the tension sensor and one end of the conditioning circuit are connected with the fixed shell, and the other end of the tension sensor and one end of the conditioning circuit are connected with the rectangular connecting rod.
In the on-site wire sensing device, the tension sensor and the conditioning circuit thereof collect on-line tension data of the insulator and transmit the data to the tension sensing microprocessor, the tension sensing microprocessor transmits the on-line tension data of the insulator through the tension wireless transmission module, the temperature sensor and the conditioning circuit thereof collect on-line temperature data of the power transmission wire and transmit the data to the temperature sensing microprocessor, and the temperature sensing microprocessor transmits the on-line temperature data of the power transmission wire through the temperature wireless transmission module.
The program-controlled switch is periodically turned on and off under the control of the analog lead microprocessor, and the switching period is 0.1HZ-10HZ.
The simulated wire monitoring system is used for recording the wire icing process, simulating the wire running condition, simulating the wire control process and simulating the wire control parameter functions, and each function enables a plurality of simulated wire fixing devices to be used according to application requirements.
The analog wire microprocessor is respectively connected with the tension sensor and the conditioning circuit thereof, the temperature sensor and the conditioning circuit thereof, the program-controlled switch and the analog wire wireless communication module, directly receives analog tension data of the tension sensor and the conditioning circuit thereof and analog temperature data of the temperature sensor and the conditioning circuit thereof in the analog wire monitoring system, and is connected with the field tension data of the tension sensor and the conditioning circuit thereof and the field temperature data of the temperature sensor and the conditioning circuit thereof through the analog wire wireless communication module to control the on-off of the program-controlled switch.
The simulated wire monitoring system simulates anti-icing control power, ice melting control power and heating control power according to an anti-icing stage and an ice melting stage of the electric transmission line and in a heating stage, wherein the simulation in the three stages uses the same simulated self-heating wire; the simulation wires adopt three simulation self-heating wires, namely an upper simulation control power limit, a simulation normal control power limit and a lower simulation control power limit, which are respectively called a control power upper limit simulation wire, a control power lower limit simulation wire and a normal control power simulation wire; in addition, the wire icing monitoring simulation is also carried out.
The analog wire microprocessor controls the heating power of the analog heating wire by controlling the duty ratio of the program-controlled switch, and the percentage of the closing time of the program-controlled switch to the total time is called the duty ratio; the simulated duty cycle includes: the method comprises the steps of simulating and measuring the duty ratio required by the temperature difference between a self-heating wire and a power transmission line, simulating the duty ratio required by the self-heating wire to simulate anti-icing control power, simulating the duty ratio required by the self-heating wire to simulate heating control power, and simulating the duty ratio required by the self-heating wire to simulate ice melting control power.
The wire icing monitoring is carried out by adopting two simulated self-heating wires, one is a simulated icing monitoring simulated self-heating wire used for simulated icing monitoring, the other is a simulated self-heating wire in a non-icing state and used for heating and keeping in a non-icing state, the weight of the simulated self-heating wire monitored by the simulated wire microprocessor is collected in real time, the weight of the simulated self-heating wire monitored by the simulated wire is sent to an upper computer system in a wireless communication mode according to the collected weight of the simulated self-heating wire, and the simulated self-heating wire is stored and processed by the upper computer system; if the simulated icing monitoring simulated self-heating wire exceeds a certain weight due to icing of the wire, heating and melting the wire to form the simulated self-heating wire in a non-icing state, and changing the original simulated self-heating wire in the non-icing state into the simulated icing monitoring simulated self-heating wire.
When the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured in a simulation manner, the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured by using one simulated self-heating wire alone, and the duty ratio for compensating the temperature difference between the simulated self-heating wire and the power transmission line is called as the temperature difference duty ratio, and the temperature difference duty ratio is expressed by K; the simulated self-heating wire used for measuring the temperature difference between the simulated self-heating wire and the power transmission line is called a simulated temperature difference wire; the measurement is programmed by an analog wire microprocessor; when the power transmission circuit does not implement anti-icing or ice melting, the analog lead microprocessor measures the temperature difference duty ratio K;
the program flow is as follows:
the first step: k=0;
and a second step of: reading online temperature data Tl of the power transmission line in a wireless communication mode;
and a third step of: reading the temperature Tm of the simulated temperature difference wire;
fourth step: judging whether Tl is greater than Tm, if so, enabling K=K+0.01, and operating the second step; if not, the fifth step is operated; fifth step: judging whether Tl is equal to Tm, yes: operating the second step; if not, let k=k-0.01, run the second step.
The aim of simulating the duty ratio required by the anti-icing control power of the self-heating wire is to control the temperature of the wire of the power transmission line; control temperature Tfs of the control power upper limit analog wire, control temperature Tfx of the control power lower limit analog wire, control temperature Tfz of the normal control power analog wire; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kfs, the duty ratio of the control power lower limit analog wire as Kfx and the duty ratio of the normal control power analog wire as Kfz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kfsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kfxc and the initial value of the duty ratio of the normal control power simulation wire as Kfzc; the analog lead microprocessor determines Tfs, tfx, tfz, kfsc, kfxc, kfzc value by receiving Tfs, tfx, tfz, kfsc, kfxc, kfzc transmitted by the upper computer;
the program flow is as follows:
the first step: setting Tfs, tfx, tfz; kfs = Kfsc; kfx = Kfxc; kfz = Kfzc;
and a second step of: read Tss, tsx, tsz
And a third step of: judging whether Tfs is larger than Tss, if so, letting Kfs = Kfs +0.01, and running a fifth step; if not, the fourth step is operated;
fourth step: judging whether Tfs is equal to Tss, and if so: running a fifth step; if not, kfs = Kfs-0.01, and running the fifth step;
fifth step: judging whether Tfx is larger than Tsx, and if so: let Kfx = Kfx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Tfx is equal to Tsx or not, and if so: running a seventh step; if not, kfx = Kfx-0.01, and running the seventh step;
seventh step: judging whether Tfz is greater than Tsz, yes: let Kfz = Kfz +0.01, run the second step; if not, running an eighth step;
eighth step: determine Tfz is equal to Tsz? The method comprises the following steps: operating the second step; if not, let Kfz = Kfz-0.01, run the second step.
The simulation self-heating wire simulates the duty ratio required by heating control power, the adjacent time interval of heating control is set as Dt seconds, the total control times are M times, the control temperature Tus (i) of each time of the upper limit control power simulation wire, the control temperature Tux (i) of each time of the lower limit control power simulation wire, the control temperature Tuz (i) of each time of the normal control power simulation wire, i=1, 2, … … and M; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kus, the duty ratio of the control power lower limit analog wire as Kux and the duty ratio of the normal control power analog wire as Kuz;
setting the initial value of the duty ratio of the control power upper limit simulation wire as Kusc, the initial value of the duty ratio of the control power lower limit simulation wire as Kuxc, and the initial value of the duty ratio of the normal control power simulation wire as Kuzc; the analog lead microprocessor determines M, dt (i), tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc values by receiving M, dt, tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc transmitted by the upper computer; i=1, 2, … …, M;
The program flow is as follows:
the first step: setting M, dt; setting Tus (i), tux (i) and Tuz (i); kus=kusc; kux = Kuxc;
Kuz＝Kuzc；i＝1；
and a second step of: read Tss, tsx, tsz;
and a third step of: judging whether Tus (i) is larger than Tss, and if so: let kus=kus+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Tus (i) is equal to Tss, and if so: running a fifth step; otherwise, let kus=kus-0.01,
running a fifth step;
fifth step: judging whether Tux (i) is larger than Tsx, and if so: let Kux = Kux +0.01, run seventh step; if not, the method can be used for solving the problem,
running a sixth step;
sixth step: judging whether Tux (i) is equal to Tsx, and if so: running a seventh step; if not, kux = Kux-0.01,
running a seventh step;
seventh step: judging whether Tuz (i) is larger than Tsz, and if so: let Kuz = Kuz +0.01, run ninth step; if not, the method can be used for solving the problem,
running an eighth step;
eighth step: judging whether Tuz (i) is equal to Tsz, and if so: running a ninth step; if not, kuz = Kuz-0.01,
running a ninth step;
ninth step: waiting Dt seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than M, and if yes: ending the operation; and if not, operating the second step.
The simulation self-heating wire simulates the duty ratio required by ice melting control power, the adjacent time interval of ice melting control is Dr seconds, the total control times are N times, the control weight Gs (i) of each time of the upper limit control power simulation wire, the control weight Gx (i) of each time of the lower limit control power simulation wire and the control weight Gz (i) of each time of the normal control power simulation wire are set, i=1, 2, … … and N; the method comprises the steps of setting the acquisition weight Gss of a tension sensor of a control power upper limit simulation wire, the acquisition weight Gsx of a tension sensor of a control power lower limit simulation wire and the acquisition weight Gsz of a tension sensor of a normal control power simulation wire; setting the duty ratio of the control power upper limit analog wire as Kgs, the duty ratio of the control power lower limit analog wire as Kgx and the duty ratio of the normal control power analog wire as Kgz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kgsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kgxc and the initial value of the duty ratio of the normal control power simulation wire as Kgzc; the analog lead microprocessor determines N, dr (i), gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc values by receiving N, dr, gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc transmitted by the upper computer; i=1, 2, … …, N;
the program flow is as follows:
the first step: setting N, dr; setting Gs (i), gx (i) and Gz (i); kgs=kgsc; kgx = Kgxc;
kgz = Kgsc; i=1, setting N;
and a second step of: read Gss, gsx, gsz;
and a third step of: judging whether Gs (i) is larger than Gss, and if so: let kgs=kgs+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Gs (i) is equal to Gss, and if so: running a fifth step; if not, kgs=Kgs-0.01 and the fifth step is operated;
fifth step: judging whether Gx (i) is larger than Gsx, and if so: let Kgx = Kgx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Gx (i) is equal to Gsx, and if so: running a seventh step; if not, kgx = Kgx-0.01, and running the seventh step;
seventh step: judging whether Gz (i) is larger than Gsz, and if so: let Kgz = Kgz +0.01, run ninth step; if not, running an eighth step;
Eighth step: judging whether Gz (i) is equal to Gsz, yes: running a ninth step; if not, kgz = Kgz-0.01, and running the ninth step;
ninth step: waiting Dr seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than N, and if yes: ending the operation; and if not, operating the second step.
The invention has the positive effects that:
in the process of implementing anti-icing and deicing, the anti-icing and deicing process needs to be controlled, and the control process depends on the parameter acquisition of the power transmission line. The invention provides a power transmission line parameter acquisition method aiming at an online anti-icing and deicing process of a self-made wire, which accurately measures the running parameters of the power transmission line by simulating the anti-icing and deicing process and the simulation control process of the wire, prejudges and analyzes the anti-icing and deicing control of the power transmission line by simulating the control process, and improves the online anti-icing and deicing effect and efficiency.
(IV) description of the drawings
Fig. 1 is a schematic diagram of an overhead transmission line installation of a field wire sensing device of the present invention.
Fig. 2 is a block diagram of the tension sensing device construction of the field wire sensing device.
Fig. 3 is a block diagram of a temperature sensing device configuration of the field wire sensing device.
Fig. 4 is a schematic diagram of an analog conductor monitoring system of the present invention.
Fig. 5 is a schematic structural view of the simulated wire fixing device after the tension sensing device is installed.
Fig. 6 is a block diagram of a host computer system according to the present invention.
Fig. 7 is a flow chart of a procedure for simulating the duty cycle required for a self-heating wire to power transmission line temperature difference by a simulated wire monitoring system.
Fig. 8 is a flow chart of a process for simulating the duty cycle required for self-heating wire anti-icing control power for a wire monitoring system.
Fig. 9 is a flow chart of a process for simulating the duty cycle required to control power from heating wire temperature rise by a simulated wire monitoring system.
Fig. 10 is a flow chart of a process for simulating the duty cycle required to control power for ice melting from a heated wire by a simulated wire monitoring system.
Fig. 11 is a circuit diagram of a microprocessor used in the present invention. The single chip microcomputer U11, MSP430F5438 is U.S. TEXAS INSTRUMENTS.
Fig. 12 is a circuit diagram of a programmable switch used in the present invention.
In the figure, a tension sensing device 1, a temperature sensor device 2, an insulator 3, a power transmission wire 4, a tower cross arm 5, a tension sensor 6-0 and a conditioning circuit 6-1-6-n, a tension sensing microprocessor 7, a tension wireless transmission module 8, a tension sensor 9-0 and a conditioning circuit 9-1-9-n, a temperature sensor microprocessor 10, a temperature wireless transmission module 11, a wire simulation installation device 12, a wire simulation self-heating wire 13-1-13-n, a program control switch 14-1-14-n, a wire simulation microprocessor 15, a wire simulation wireless communication module 16, a power supply 17, a wire simulation wire fixing device 18-1-18-n, a fixed shell 19, a rectangular connecting rod 21, a computer 22 and a host computer 23. The 6-0 tension sensor and the conditioning circuit are used in the tension sensor and the conditioning circuit of the on-site wire sensing device, the 6-1-6-n tension sensor and the conditioning circuit of the analog wire monitoring system, the 9-0 temperature sensor and the conditioning circuit are used in the temperature sensor and the conditioning circuit of the on-site wire sensing device, and the 9-1-9-n temperature sensor and the conditioning circuit are used in the analog wire monitoring system tension sensor and the conditioning circuit.
(fifth) detailed description of the invention
The on-line monitoring equipment comprises a field wire sensing device, a simulated wire monitoring system and a simulated self-heating wire switch control part, and is communicated with an upper computer through a communication system.
See fig. 1, 2, 3.
The on-site wire sensing device consists of a tension sensing device and a temperature sensing device. Is installed on an overhead transmission line. The installation mode of the tension sensing device and the temperature sensing device on the overhead transmission line is shown in fig. 1.
The tension sensing device 1 is arranged between the tower cross arm 5 and the insulator 3, tension born by the insulator is measured, the temperature sensing device 2 is arranged on a transmission electric wire, and the temperature of the wire is measured.
The tension sensor and the conditioning circuit 6-0 collect the online tension data of the insulator 3, and transmit the online tension data to the tension sensing microprocessor 7, and the tension sensing microprocessor transmits the online tension data of the insulator 3 through the tension wireless transmission module 8.
The temperature sensor and the conditioning circuit 9-0 collect the on-line temperature data of the power transmission wire, and transmit the data to the temperature sensing microprocessor 10, and the temperature sensing microprocessor transmits the on-line temperature data of the power transmission wire through the temperature wireless transmission module 11.
See fig. 4, 5, 6.
The analog wire monitoring system consists of n analog wire fixing devices 18-1-18-n, n analog self-heating wires 13-1-13-n, n program-controlled switches 14-1-14-n, n temperature sensors and conditioning circuits 9-1-9-n, n tension sensors and conditioning circuits 6-1-6-n, an analog wire mounting device 12, an analog wire microprocessor 15, an analog wire wireless communication module 16 and a power supply 17.
The analog conductor mounting means 12 are installed in the same climatic environment and altitude as the monitoring transmission line for mounting the analog conductor fixing means. The simulated wire mounting device 12 is provided with a plurality of simulated wire fixing devices 18-1 to 18-n, and each simulated wire fixing device is correspondingly provided with a simulated self-heating wire and a program-controlled switch.
The analog wire fixing device is a fixed shell 19 with a rectangular groove and a rectangular connecting rod 21, a tension sensor and a conditioning circuit are arranged in the rectangular groove, and the top of the fixed shell is fixed on the analog wire mounting device 12 and cannot swing and twist due to the influence of wind power. One end of the tension sensor and the conditioning circuit is connected with the fixed shell 19, and the other end is connected with the rectangular connecting rod 21. The gravity measuring device is used for measuring the gravity of the rectangular connecting rod and the simulated self-heating wire connected to the rectangular connecting rod.
The simulated self-heating wires 13-1 to 13-n are arranged on a rectangular connecting rod of the simulated wire fixing device 12; the inner conductor of the simulated self-heating wire is connected with the corresponding programmable switch, and the outer conductor is directly connected to the power supply 17.
The simulated self-heating wire used in this example is a self-melting conductor disclosed in patent CN201610867150.1, "a self-melting conductor and melting equipment". The length of the simulated self-heating wire is determined according to experimental data. The simulated self-made thermal conductors are mounted on rectangular connecting rods 21 of the simulated conductor fixing device 12, the number of which is n. The inner conductor of the simulated self-heating wire is connected with the corresponding programmable switch, and the outer conductor is directly connected to the power supply 17.
The temperature sensor and the conditioning circuit 9-1 to 9-n are arranged on the simulated self-heating wires 13-1 to 13-n, and the temperature of the simulated self-heating wires is monitored in real time. The temperature sensor and conditioning circuits 9-1 to 9-n are connected with the analog wire microprocessor 15 and transmit temperature data to the analog wire microprocessor; the number of the temperature sensors and the conditioning circuits is n.
The analog self-made wire-guiding switch control is a program-controlled switch system controlled by a microprocessor, and program-controlled switches 14-1 to 14-n are respectively connected with an analog wire microprocessor 15. Two connecting terminals of the program-controlled switch are connected with one end of the inner conductor of the self-heating wire and one end of the connecting terminal is connected with one terminal of the power supply. Under the control of the analog conductor microprocessor 15, the programmable switches 14-1 to 14-n short circuit or open circuit the power supply 17 with the inner conductors of the analog self-heating conductors 13-1 to 13-n. The number of the program-controlled switches is n.
The analog wire microprocessor is respectively connected with the tension sensor and the conditioning circuit thereof, the temperature sensor and the conditioning circuit thereof, the program-controlled switch and the analog wire wireless communication module, directly receives analog tension data of the tension sensor and the conditioning circuit thereof and analog temperature data of the temperature sensor and the conditioning circuit thereof in the analog wire monitoring system, is connected with the received field tension data of the tension sensor and the conditioning circuit thereof and field temperature data of the temperature sensor and the conditioning circuit thereof through the analog wire wireless communication module, and controls the on-off of the program-controlled switch.
The analog wire wireless communication module user receives the field tension data of the tension sensor and the conditioning circuit of the field wire sensing device, the field temperature data of the temperature sensor and the conditioning circuit and sends the field tension data and the field temperature data to the analog wire microprocessor.
The power supply is used for supplying power to the simulated self-made heat conducting wire, and two output ends of the power supply are connected with the self-made heat conducting wire outer conductor at one end and the program-controlled switch at one end; the alternating current or direct current type of the power supply is consistent with the type of the power supply applied to the inner conductor and the outer conductor by the power transmission line, and the power supply voltage is the same as the power supply voltage applied to the inner conductor and the outer conductor by the power transmission line.
The upper computer system is composed of a computer and an upper computer wireless transmission module. The upper computer wireless transmission module receives data sent by the analog conductor microprocessor through the analog conductor wireless communication module and stores the data into the computer.
See fig. 11, 12.
The tension sensing microprocessor, the temperature sensing microprocessor and the analog lead microprocessor use the same microprocessor, and the used microprocessors are all single-chip microprocessors U11:MSP430F5438 and U.S. TEXAS INSTRUMENTS. The switch KT of the program-controlled switch is as follows: nippon ohm company Relay, LY1-J. UT is: TLP521 produced by Toshiba corporation of Japan. QT is: us Fairchild Semiconductor Corporation company: IN4148. The tension wireless transmission module, the temperature wireless transmission module, the analog lead wireless communication module and the upper computer wireless communication transmission use the same wireless communication module, and the wireless communication module uses the model produced by Shenyang middle Keao Uygur technology Co., ltd: ZAWM100-B002 module. All temperature sensing and conditioning modules 9-0,9-1, … …,9-n adopt high-voltage transmission wire temperature monitoring units manufactured by Shenzhen Telecan technology Co., ltd, and the model is as follows: TLKS-TP-M. All tension sensor and conditioning modules 6-0,6-1, … …,6-n used the tension sensor module in TLKS-PMG-FB100, manufactured by Telechi technologies, inc. of Shenzhen.
In this embodiment, the programmable switch is periodically turned on and off under the control of the analog lead microprocessor, and the switching period is 0.1HZ-10HZ.
The simulated wire monitoring system is used for recording the wire icing process, simulating the wire running condition, simulating the wire control process and simulating the wire control parameter functions, and each function uses n simulated wire fixing devices. And the power required by the temperature difference between the power transmission line and the simulated self-heating wire is obtained through the heating power control of the simulated heating wire.
The method for controlling the anti-icing and de-icing of the power transmission line mainly comprises three stages, namely 201810886319.7 'an online anti-icing and de-icing heat calculation method for the power transmission line based on self-heating wires': an anti-icing stage, an ice melting stage and a heating stage. According to the thought, the simulation structure of the self-made self-ice melting wire to be simulated is composed into the simulated anti-ice control power, the simulated ice melting control power and the simulated heating control power. The transmission line ice-proof stage, the ice-melting stage and the temperature-rising stage cannot exist simultaneously, and the same simulated self-heating wire is used for simulating the three stages at one time. In the anti-icing stage and the deicing stage, three simulated self-heating wires, one simulating upper limit of control power, one simulating normal control power and one simulating lower limit of control power are adopted in the control simulation in the temperature rising stage, and the upper limit of control power, the lower limit of control power and the normal control power are respectively called as a control power upper limit simulation wire, a control power lower limit simulation wire and a normal control power simulation wire. In addition, the wire icing monitoring is carried out; each simulation requires the use of one or more simulated autothermal conductors. In addition, the wire icing monitoring is carried out; each simulation requires the use of one or more simulated autothermal conductors.
The analog wire microprocessor controls the heating power of the analog heating wire by controlling the duty ratio of the program-controlled switch. The percentage of the closing time of the programmable switch to the total time is called the duty ratio; the simulated duty cycle includes: the method comprises the steps of simulating and measuring the duty ratio required by the temperature difference between a self-heating wire and a power transmission line, simulating the duty ratio required by the self-heating wire to simulate anti-icing control power, simulating the duty ratio required by the self-heating wire to simulate heating control power, and simulating the duty ratio required by the self-heating wire to simulate ice melting control power.
See fig. 7.
Because the power transmission line has current, the current flowing through the power transmission line generates heat, and therefore the temperature difference between the self-heating wire and the power transmission line needs to be measured and simulated. When the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured in a simulated manner, the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured by using one simulated self-heating wire alone, the duty ratio for compensating the temperature difference between the simulated self-heating wire and the power transmission line is called as the temperature difference duty ratio, and the temperature difference duty ratio is expressed by K; the simulated self-heating wire used for measuring the temperature difference between the simulated self-heating wire and the power transmission line is called a simulated temperature difference wire; the measurement is programmed by an analog wire microprocessor; and when the power transmission circuit does not implement anti-icing or ice melting operation, the analog lead microprocessor measures the temperature difference duty ratio K.
The program flow is as follows:
the first step: k=0;
and a second step of: reading online temperature data Tl of the power transmission line in a wireless communication mode;
and a third step of: reading the temperature Tm of the simulated temperature difference wire;
fourth step: judging whether Tl is greater than Tm, if so, enabling K=K+0.01, and operating the second step; if not, the fifth step is operated; fifth step: judging whether Tl is equal to Tm, yes: operating the second step; if not, let k=k-0.01, run the second step.
See fig. 8.
The aim of simulating the duty ratio required by the anti-icing control power of the self-heating wire is to control the temperature of the wire of the power transmission line; control temperature Tfs of the control power upper limit analog wire, control temperature Tfx of the control power lower limit analog wire, control temperature Tfz of the normal control power analog wire; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kfs, the duty ratio of the control power lower limit analog wire as Kfx and the duty ratio of the normal control power analog wire as Kfz;
setting the initial value of the duty ratio of the control power upper limit simulation wire as Kfsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kfxc and the initial value of the duty ratio of the normal control power simulation wire as Kfzc; the analog lead microprocessor determines Tfs, tfx, tfz, kfsc, kfxc, kfzc value by receiving Tfs, tfx, tfz, kfsc, kfxc, kfzc transmitted by the upper computer;
The program flow is as follows:
the first step: setting Tfs, tfx, tfz; kfs = Kfsc; kfx = Kfxc; kfz = Kfzc;
and a second step of: read Tss, tsx, tsz
And a third step of: judging whether Tfs is larger than Tss, if so, letting Kfs = Kfs +0.01, and running a fifth step; if not, the fourth step is operated;
fourth step: judging whether Tfs is equal to Tss, and if so: running a fifth step; if not, kfs = Kfs-0.01, and running the fifth step;
fifth step: judging whether Tfx is larger than Tsx, and if so: let Kfx = Kfx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Tfx is equal to Tsx or not, and if so: running a seventh step; if not, kfx = Kfx-0.01, and running the seventh step;
seventh step: judging whether Tfz is greater than Tsz, yes: let Kfz = Kfz +0.01, run the second step; if not, running an eighth step;
eighth step: determine Tfz is equal to Tsz? The method comprises the following steps: operating the second step; if not, let Kfz = Kfz-0.01, run the second step.
See fig. 9.
The temperature rise control is mainly used for controlling the temperature rise process of the transmission line wires. The method comprises the steps of simulating a duty ratio required by heating control power from a heating wire, setting adjacent time intervals of heating control as Dt seconds, setting total control times as M times, controlling control temperature Tus (i) of each time of a power upper limit simulation wire, control temperature Tux (i) of each time of a power lower limit simulation wire, and control temperature Tuz (i) of each time of a normal control power simulation wire, wherein i=1, 2, … … and M; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kus, the duty ratio of the control power lower limit analog wire as Kux and the duty ratio of the normal control power analog wire as Kuz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kusc, the initial value of the duty ratio of the control power lower limit simulation wire as Kuxc, and the initial value of the duty ratio of the normal control power simulation wire as Kuzc; the analog lead microprocessor determines M, dt (i), tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc values by receiving M, dt, tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc transmitted by the upper computer; i=1, 2, … …, M;
the program flow is as follows:
the first step: setting M, dt; setting Tus (i), tux (i) and Tuz (i); kus=kusc; kux = Kuxc;
Kuz＝Kuzc；i＝1；
and a second step of: read Tss, tsx, tsz;
and a third step of: judging whether Tus (i) is larger than Tss, and if so: let kus=kus+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Tus (i) is equal to Tss, and if so: running a fifth step; otherwise, let kus=kus-0.01,
running a fifth step;
fifth step: judging whether Tux (i) is larger than Tsx, and if so: let Kux = Kux +0.01, run seventh step; if not, the method can be used for solving the problem,
running a sixth step;
sixth step: judging whether Tux (i) is equal to Tsx, and if so: running a seventh step; if not, kux = Kux-0.01,
running a seventh step;
seventh step: judging whether Tuz (i) is larger than Tsz, and if so: let Kuz = Kuz +0.01, run ninth step; if not, the method can be used for solving the problem,
Running an eighth step;
eighth step: judging whether Tuz (i) is equal to Tsz, and if so: running a ninth step; if not, kuz = Kuz-0.01,
running a ninth step;
ninth step: waiting Dt seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than M, and if yes: ending the operation; and if not, operating the second step.
See fig. 10.
The ice melting control is mainly used for controlling the ice melting process of the transmission line wires. The method comprises the steps of simulating a duty ratio required by ice melting control power of a self-heating wire, setting an adjacent ice melting control time interval as Dr seconds, and setting total control times as N times, wherein the control weight Gs (i) of each time of a control power upper limit simulation wire, the control weight Gx (i) of each time of a control power lower limit simulation wire and the control weight Gz (i) of each time of a normal control power simulation wire are controlled, and i=1, 2, … … and N; the method comprises the steps of setting the acquisition weight Gss of a tension sensor of a control power upper limit simulation wire, the acquisition weight Gsx of a tension sensor of a control power lower limit simulation wire and the acquisition weight Gsz of a tension sensor of a normal control power simulation wire; setting the duty ratio of the control power upper limit analog wire as Kgs, the duty ratio of the control power lower limit analog wire as Kgx and the duty ratio of the normal control power analog wire as Kgz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kgsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kgxc and the initial value of the duty ratio of the normal control power simulation wire as Kgzc; the analog lead microprocessor determines N, dr, gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc values by receiving N, dr, gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc transmitted by the upper computer; i=1, 2, … …, N;
the program flow is as follows:
the first step: setting N, dr; setting Gs (i), gx (i) and Gz (i); kgs=kgsc; kgx = Kgxc;
Kgz＝Kgsc；i＝1；
and a second step of: read Gss, gsx, gsz;
and a third step of: judging whether Gs (i) is larger than Gss, and if so: let kgs=kgs+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Gs (i) is equal to Gss, and if so: running a fifth step; if not, kgs=Kgs-0.01 and the fifth step is operated;
fifth step: judging whether Gx (i) is larger than Gsx, and if so: let Kgx = Kgx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Gx (i) is equal to Gsx, and if so: running a seventh step; if not, kgx = Kgx-0.01, and running the seventh step;
seventh step: judging whether Gz (i) is larger than Gsz, and if so: let Kgz = Kgz +0.01, run ninth step; if not, running an eighth step;
Eighth step: judging whether Gz (i) is equal to Gsz, yes: running a ninth step; if not, kgz = Kgz-0.01, and running the ninth step;
ninth step: waiting Dr seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than N, and if yes: ending the operation; and if not, operating the second step.
In addition, the wire icing monitoring adopts two simulated self-heating wires to simulate. The simulated wire microprocessor collects the weight of one simulated self-heating wire in real time, and sends the weight of the simulated self-heating wire to the upper computer system in a wireless communication mode according to the collected weight of the simulated self-heating wire, and the weight of the simulated self-heating wire is stored and processed by the upper computer system; if the simulated self-heating wire is covered with ice by the wire and exceeds a certain weight, the wire is heated to melt ice, and the other wire is started to carry out ice covering monitoring.
Claims (6)
1. An embedded heating material is from ice-melt wire on-line monitoring equipment, its characterized in that: the on-line monitoring equipment comprises a field wire sensing device, a simulated wire monitoring system and a simulated self-heating wire switch control part, and is communicated with the upper computer through a communication system;
the on-site wire sensing device consists of a tension sensing device (1) and a temperature sensor device (2), wherein the tension sensing device (1) is arranged between a tower cross arm (5) and an insulator (3) to measure tension born by the insulator, and the temperature sensor device (2) is arranged on a power transmission wire (4) to measure wire temperature; the tension sensing device consists of a tension sensor, a conditioning circuit (6-0), a tension sensing microprocessor (7) and a tension wireless transmission module (8); the temperature sensor device consists of a temperature sensor, a conditioning circuit (9-0) of the conditioning circuit, a temperature sensing microprocessor (10) and a temperature wireless transmission module (11); the tension data measured by the field wire tension sensor and the conditioning circuit (6-0) are called on-line tension data; the on-site wire temperature sensor device is characterized in that the measured data of a temperature sensor and a conditioning circuit (9-0) thereof are called on-line temperature data;
The analog wire monitoring system consists of n analog wire fixing devices (18-1-18-n), n analog self-heating wires (13-1-13-n), n program-controlled switches (14-1-14-n), n temperature sensors and conditioning circuits (9-1-9-n), n tension sensors and conditioning circuits (6-1-6-n), an analog wire mounting device (12), an analog wire microprocessor (15), an analog wire wireless communication module (16) and a power supply (17);
a plurality of simulation wire fixing devices (18-1 to 18-n) are arranged on the simulation wire installation device (12), and each simulation wire fixing device is correspondingly provided with a simulation self-heating wire and a program control switch;
n simulated self-heating wires (13-1 to 13-n) are arranged on a rectangular connecting rod (21) of the simulated wire fixing device; the inner conductor of the simulated self-heating wire is connected with the corresponding program-controlled switch, and the outer conductor is directly connected to a power supply (17);
the temperature sensor and the conditioning circuit (9-1-9-n) are correspondingly arranged on n simulated self-heating wires (13-1-13-n) and are connected with the simulated wire microprocessor (15);
the tension sensor and the conditioning circuit (6-1 to 6-n) are connected to the analog wire fixing device (18-1 to 18-n);
the simulated self-made wire-guiding switch control is a program-controlled switch system controlled by a microprocessor, program-controlled switches (14-1 to 14-n) are respectively connected with a simulated wire microprocessor (15), and each program-controlled switch is controlled by the simulated wire microprocessor; two connecting terminals of the program-controlled switch, one end of which is connected to the inner conductor of the simulated self-heating wire, and the other end of which is connected to one terminal of the power supply, under the control of the simulated wire microprocessor (15), the program-controlled switch (14-1-14-n) enables the power supply (17) to be short-circuited or open-circuited with the inner conductor of the simulated self-heating wire (13-1-13-n);
The simulated wire installation device (12) is installed in the same climatic environment and altitude as the monitored transmission line and is used for installing a simulated wire fixing device, and the simulated self-heating wires (13-1 to 13-n) are embedded heating material self-melting wires, and the lengths of the simulated self-heating wires are determined according to the needs;
the simulation wire fixing device is a fixing shell (19) with a rectangular groove and a rectangular connecting rod (21), a tension sensor and a conditioning circuit are arranged in the rectangular groove, and the top of the fixing shell is fixed on the simulation wire mounting device (12); one end of the tension sensor and one end of the conditioning circuit are connected with the fixed shell (19), and the other end of the tension sensor and one end of the conditioning circuit are connected with the rectangular connecting rod (21);
in the on-site wire sensing device, a tension sensor and a conditioning circuit thereof collect on-line tension data of an insulator and transmit the data to a tension sensing microprocessor, the tension sensing microprocessor transmits the on-line tension data of the insulator through a tension wireless transmission module, a temperature sensor and a conditioning circuit thereof collect on-line temperature data of a power transmission wire and transmit the data to a temperature sensing microprocessor, and the temperature sensing microprocessor transmits the on-line temperature data of the power transmission wire through a temperature wireless transmission module;
the program-controlled switch is periodically turned on and off under the control of the analog lead microprocessor, and the switching period is 0.1HZ-10HZ.
2. The method for detecting the self-icing wire on-line monitoring device embedded in the heating material according to claim 1, wherein the method comprises the following steps: the simulated wire monitoring system is used for recording the wire icing process, simulating the wire running condition, simulating the wire control process and simulating the wire control parameter functions, and each function uses a plurality of simulated wire fixing devices according to application requirements;
the analog wire microprocessor (15) is respectively connected with the tension sensor and the conditioning circuit (6-1-6-n) of the wire sensing device, the temperature sensor and the conditioning circuit (9-1-9-n) thereof, the program control switch (14-1-14-n) and the analog wire wireless communication module (16), directly receives analog tension data of the tension sensor and the conditioning circuit (6-1-6-n) in the analog wire monitoring system, analog temperature data of the temperature sensor and the conditioning circuit (9-1-9-n) thereof, and receives field tension data of the tension sensor and the conditioning circuit of the field wire sensing device and field temperature data of the temperature sensor and the conditioning circuit thereof, and controls the on and off of the program control switch through the analog wire wireless communication module (16);
the simulated wire monitoring system simulates anti-icing control power, ice melting control power and heating control power according to an anti-icing stage and an ice melting stage of the electric transmission line and in a heating stage, wherein the simulation in the three stages uses the same simulated self-heating wire; the simulation wires adopt three simulation self-heating wires, namely an upper simulation control power limit, a simulation normal control power limit and a lower simulation control power limit, which are respectively called a control power upper limit simulation wire, a control power lower limit simulation wire and a normal control power simulation wire; in addition, the wire icing monitoring simulation is carried out; one or more simulated self-heating wires are used for each simulation;
The analog lead microprocessor controls the heating power of the analog self-heating lead by controlling the duty ratio of the program-controlled switch, and the percentage of the closing time of the program-controlled switch to the total time is called the duty ratio; the simulated duty cycle includes: the method comprises the steps of simulating and measuring a duty ratio required by the temperature difference between a self-heating wire and a power transmission line, simulating a duty ratio required by the self-heating wire to simulate anti-icing control power, simulating a duty ratio required by the self-heating wire to simulate heating control power, and simulating a duty ratio required by the self-heating wire to simulate ice melting control power;
the wire icing monitoring is carried out by adopting two simulated self-heating wires, one is a simulated icing monitoring simulated self-heating wire and is used for simulating icing monitoring, the other is a simulated self-heating wire in a non-icing state and is used for heating and keeping in the non-icing state, a simulated wire microprocessor collects the weight of the simulated self-heating wire in real time, and the collected weight of the simulated self-heating wire is sent to an upper computer system in a wireless communication mode and is stored and processed by the upper computer system; if the simulated icing monitoring simulated self-heating wire exceeds a certain weight due to icing of the wire, heating and melting the wire to form the simulated self-heating wire in a non-icing state, and changing the original simulated self-heating wire in the non-icing state into the simulated icing monitoring simulated self-heating wire.
3. The method of detection of claim 2, wherein: when the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured in a simulation manner, the duty ratio required by the temperature difference between the simulated self-heating wire and the power transmission line is measured by using one simulated self-heating wire alone, and the duty ratio for compensating the temperature difference between the simulated self-heating wire and the power transmission line is called as the temperature difference duty ratio, and the temperature difference duty ratio is expressed by K; the simulated self-heating wire used for measuring the temperature difference between the simulated self-heating wire and the power transmission line is called a simulated temperature difference wire; the measurement is programmed by an analog wire microprocessor; when the power transmission circuit does not implement anti-icing or ice melting, the analog lead microprocessor measures the temperature difference duty ratio K;
the program flow is as follows:
the first step: k=0;
and a second step of: reading online temperature data Tl of the power transmission line in a wireless communication mode;
and a third step of: reading the temperature Tm of the simulated temperature difference wire;
fourth step: judging whether Tl is greater than Tm, if so, enabling K=K+0.01, and operating the second step; if not, the fifth step is operated;
fifth step: judging whether Tl is equal to Tm, yes: operating the second step; if not, let k=k-0.01, run the second step.
4. The method of detection of claim 2, wherein: the aim of simulating the duty ratio required by the anti-icing control power of the self-heating wire is to control the temperature of the wire of the power transmission line; control temperature Tfs of the control power upper limit analog wire, control temperature Tfx of the control power lower limit analog wire, control temperature Tfz of the normal control power analog wire; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kfs, the duty ratio of the control power lower limit analog wire as Kfx and the duty ratio of the normal control power analog wire as Kfz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kfsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kfxc and the initial value of the duty ratio of the normal control power simulation wire as Kfzc;
the analog lead microprocessor determines Tfs, tfx, tfz, kfsc, kfxc, kfzc value by receiving Tfs, tfx, tfz, kfsc, kfxc, kfzc transmitted by the upper computer;
the program flow is as follows:
the first step: setting Tfs, tfx, tfz; kfs = Kfsc; kfx = Kfxc; kfz = Kfzc;
and a second step of: read Tss, tsx, tsz
And a third step of: judging whether Tfs is larger than Tss, if so, letting Kfs = Kfs +0.01, and running a fifth step; if not, the fourth step is operated;
fourth step: judging whether Tfs is equal to Tss, and if so: running a fifth step; if not, kfs = Kfs-0.01, and running the fifth step;
fifth step: judging whether Tfx is larger than Tsx, and if so: let Kfx = Kfx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Tfx is equal to Tsx or not, and if so: running a seventh step; if not, kfx = Kfx-0.01, and running the seventh step;
seventh step: judging whether Tfz is greater than Tsz, yes: let Kfz = Kfz +0.01, run the second step; if not, running an eighth step;
eighth step: determine Tfz is equal to Tsz? The method comprises the following steps: operating the second step; if not, let Kfz = Kfz-0.01, run the second step.
5. The method of detection of claim 2, wherein: the simulation self-heating wire simulates the duty ratio required by heating control power, the adjacent time interval of heating control is set as Dt seconds, the total control times are M times, the control temperature Tus (i) of each time of the upper limit control power simulation wire, the control temperature Tux (i) of each time of the lower limit control power simulation wire, the control temperature Tuz (i) of each time of the normal control power simulation wire, i=1, 2, … … and M; a temperature sensor for controlling the upper power limit simulation wire is arranged to collect the temperature Tss, a temperature sensor for controlling the lower power limit simulation wire is arranged to collect the temperature Tsx, and a temperature sensor for normally controlling the power simulation wire is arranged to collect the temperature Tsz; setting the duty ratio of the control power upper limit analog wire as Kus, the duty ratio of the control power lower limit analog wire as Kux and the duty ratio of the normal control power analog wire as Kuz;
setting the initial value of the duty ratio of the control power upper limit simulation wire as Kusc, the initial value of the duty ratio of the control power lower limit simulation wire as Kuxc, and the initial value of the duty ratio of the normal control power simulation wire as Kuzc; the analog lead microprocessor determines M, dt (i), tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc values by receiving M, dt, tus (i), tux (i), tuz (i) and Kusc, kuxc, kuzc transmitted by the upper computer; i=1, 2, … …, M;
The program flow is as follows:
the first step: setting M, dt; setting Tus (i), tux (i) and Tuz (i); kus=kusc; kux = Kuxc;
Kuz＝Kuzc；i＝1；
and a second step of: read Tss, tsx, tsz;
and a third step of: judging whether Tus (i) is larger than Tss, and if so: let kus=kus+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Tus (i) is equal to Tss, and if so: running a fifth step; no, let kus=kus-0.01, run the fifth step;
fifth step: judging whether Tux (i) is larger than Tsx, and if so: let Kux = Kux +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Tux (i) is equal to Tsx, and if so: running a seventh step; if not, kux = Kux-0.01, and running the seventh step;
seventh step: judging whether Tuz (i) is larger than Tsz, and if so: let Kuz = Kuz +0.01, run ninth step; if not, running an eighth step;
eighth step: judging whether Tuz (i) is equal to Tsz, and if so: running a ninth step; if not, kuz = Kuz-0.01, and running the ninth step;
ninth step: waiting Dt seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than M, and if yes: ending the operation; and if not, operating the second step.
6. The method of detection of claim 2, wherein: the simulation self-heating wire simulates the duty ratio required by ice melting control power, the adjacent time interval of ice melting control is Dr seconds, the total control times are N times, the control weight Gs (i) of each time of the upper limit control power simulation wire, the control weight Gx (i) of each time of the lower limit control power simulation wire and the control weight Gz (i) of each time of the normal control power simulation wire are set, i=1, 2, … … and N; the method comprises the steps of setting the acquisition weight Gss of a tension sensor of a control power upper limit simulation wire, the acquisition weight Gsx of a tension sensor of a control power lower limit simulation wire and the acquisition weight Gsz of a tension sensor of a normal control power simulation wire; setting the duty ratio of the control power upper limit analog wire as Kgs, the duty ratio of the control power lower limit analog wire as Kgx and the duty ratio of the normal control power analog wire as Kgz;
Setting the initial value of the duty ratio of the control power upper limit simulation wire as Kgsc, the initial value of the duty ratio of the control power lower limit simulation wire as Kgxc and the initial value of the duty ratio of the normal control power simulation wire as Kgzc; the analog lead microprocessor determines N, dr, gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc values by receiving N, dr, gs (i), gx (i), gz (i) and Kgsc, kgxc, kgzc transmitted by the upper computer; i=1, 2, … …, N;
the program flow is as follows:
the first step: setting N, dr; setting Gs (i), gx (i) and Gz (i); kgs=kgsc; kgx = Kgxc;
Kgz＝Kgsc；i＝1；
and a second step of: read Gss, gsx, gsz;
and a third step of: judging whether Gs (i) is larger than Gss, and if so: let kgs=kgs+0.01, run the fifth step; if not, the fourth step is operated;
fourth step: judging whether Gs (i) is equal to Gss, and if so: running a fifth step; if not, kgs=Kgs-0.01 and the fifth step is operated;
fifth step: judging whether Gx (i) is larger than Gsx, and if so: let Kgx = Kgx +0.01, run seventh step; if not, the sixth step is operated;
sixth step: judging whether Gx (i) is equal to Gsx, and if so: running a seventh step; if not, kgx = Kgx-0.01, and running the seventh step;
seventh step: judging whether Gz (i) is larger than Gsz, and if so: let Kgz = Kgz +0.01, run ninth step; if not, running an eighth step;
Eighth step: judging whether Gz (i) is equal to Gsz, yes: running a ninth step; if not, kgz = Kgz-0.01, and running the ninth step;
ninth step: waiting Dr seconds; i=i+1; operating a tenth step;
tenth step: judging whether i is larger than N, and if yes: ending the operation; and if not, operating the second step.
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| CN109361187B (en) * | 2018-12-06 | 2020-01-24 | 四川大学 | Line-to-line lossless single-phase shunt and design and control method |
| CN109449854B (en) * | 2018-12-06 | 2020-02-07 | 四川大学 | Station-used lossless three-phase current divider for preventing ice and melting ice and design and control method |
| CN111009869B (en) * | 2019-11-25 | 2020-12-22 | 国网湖南省电力有限公司 | Real-time online ice melting equipment for transmission conductor and control method thereof |
| CN113507081B (en) * | 2021-07-14 | 2022-06-21 | 四川大学 | Passive lossless single-phase anti-icing and de-icing control equipment for strain tower |
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