CN103196542A - Vibration monitoring system and vibration monitoring method for divided conductors - Google Patents
Vibration monitoring system and vibration monitoring method for divided conductors Download PDFInfo
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- CN103196542A CN103196542A CN2013101436916A CN201310143691A CN103196542A CN 103196542 A CN103196542 A CN 103196542A CN 2013101436916 A CN2013101436916 A CN 2013101436916A CN 201310143691 A CN201310143691 A CN 201310143691A CN 103196542 A CN103196542 A CN 103196542A
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Abstract
The invention discloses a vibration monitoring system and a vibration monitoring method for divided conductors. The vibration monitoring system comprises a divided conductor vibration monitoring device (25), optical fiber (26), an optical fiber composite overhead ground wire (29), a fiber bragg grating demodulator (30) and a computer system (31). According to the vibration monitoring system and the vibration monitoring method, vibrations of the divided conductors of a power transmission line in three directions, especially the integral torsional vibration and the sub-conductor torsional vibration of a divided conductor beam are monitored, and the multipoint real-time monitoring can be carried out on the torsional rigidity of the power transmission line; and various types of divided conductors can be monitored through simple transformation, and the influence on the inherent property of the line is less. The defects that a field power supply is needed, the anti-electromagnetic interference capability is poor and the like as the torsional vibration of the conductors cannot be monitored, especially a system which can be used for implementing vibration monitoring of the divided conductors is absent and the self property of the line is easily influenced by installation of the traditional sensing system in the prior art are overcome, and convenience is provided for operation and maintenance of the line.
Description
Technical field
The present invention relates to high pressure overhead power line on-line monitoring technique field, particularly relate to a kind of vibration monitor system for split conductor and method.
Background technology
The overhead transmission line that exposes under field conditions (factors) descends at wind load and the effect of icing (snow) load, mainly bears the vibration of five kinds of forms: wave, and aeolian vibration, subspan oscillation (also claiming the wake flow galloping) is buffeted and is deiced (snow) and jumps.These oscillatory types all show as the laterally vibration of (level or vertical) direction of lead.Wherein waving is the vibration of Three Degree Of Freedom: horizontal direction, vertical direction and along traverse shaft to twisting vibration.Deice jump, except the significantly vibration that shows as the lead vertical direction, also can follow the micro breadth oscillation of horizontal direction; Simultaneously, for split conductor, because of each sub-conductor ice cover difference, perhaps each sub-conductor does not deice the same period, can cause the whole twisting vibration of bundle conductor.At present there are the following problems to the vibration monitoring of split conductor:
(1) jump of waving and deice of lead all is the Three Degree Of Freedom vibration, but present various monitoring technology all fail to realize the monitoring of or single sub-conductor twisting vibration whole to bundle conductor; This has limited the abundant checking of waving and deicing jump Three Degree Of Freedom theoretical model to existing, and to the early warning promptly and accurately of corresponding disaster.
(2) split conductor bundle torsional rigidity is requisite parameter in all kinds of Research on Dynamic Characteristic of split conductor, but because it holds on-link mode (OLM) with shelves, the split conductor configuration, sub-lead spacer is arrangement in shelves, measurement point apart from the shelves end distance from, and the variation of factor such as icing condition and present strong nonlinear, make the applicability of theoretical analysis model of present various split conductor bundle torsional rigidities all be subjected to limitation.Therefore, be necessary torsional rigidity is carried out long term monitoring, with the accumulation service data, the theoretical model of checking or improvement torsional rigidity.But have not yet to see technology and scheme that the circuit torsional rigidity is monitored in real time.
(3) existing monitoring system mainly at the S.C. design, rarely has the dynamic characteristic monitoring system that is applicable to split conductor.Because split conductor sub-conductor radical different (common have two, three, four, six or eight etc.), conventional sensors is difficult to monitor the bundle conductor mass motion, and the arrangement of sensor on bundle conductor or sub-conductor also lacked research.The monitoring scheme of existing S.C. is divided into two classes substantially: a class is that sensor is arranged between insulator and the shaft tower, or between lead and the insulator, or be fixed on conductor wire end near shaft tower, such scheme can realize effectively monitoring to the static load that icing produces, but be difficult to assess conductor vibration real amplitude and waveform, can't be effective to wave and deice the dynamic monitoring of jump; Another kind of scheme is, arrange that at each grade lead a plurality of acceleration and displacement transducer monitoring wave the scheme that track is waved in parameter and match, and can only be applicable to the S.C. monitoring, and because being equivalent to have added a plurality of lumped masses at this grade lead, can significantly change the intrinsic property of this grade lead, influence monitoring result.
(4) existing waving in the monitoring scheme, the video monitoring can only realize the qualitative monitoring to waving, and is difficult to carry out quantitative test; In addition, prior art is used electrical quantity sensor more, be subject to the interference of transmission line of electricity forceful electric power magnetic environment, and the required stable field power supply of sensor and signal thereof transmission be difficult for obtaining (as adopt the solar panel power supply, run into continue overcast and rainy can't operate as normal).
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of vibration monitor system for split conductor and method.
A kind of vibration monitor system for split conductor comprises: split conductor vibration monitoring device, optical fiber, Optical Fiber composite overhead Ground Wire, fiber Bragg grating (FBG) demodulator and computer system; It is characterized in that: described split conductor vibration monitoring device comprises: a split conductor conductor spacer skeleton; One camshaft, described camshaft is connected with the stage casing in described conductor spacer frame center hole by bearing, and described camshaft one end connects a weight; The first optical fiber grating sensing unit is fixed on the described conductor spacer frame center hole leading portion inwall, and the contact of the described first optical fiber grating sensing unit contacts with cam of camshaft outer wall; Gland, described gland be by being bolted on the described conductor spacer skeleton extension, and constitute endoporus with the extension of described conductor spacer skeleton, and the leading portion profile of described endoporus is cam path; Metal sleeve, rubber neck, described metal sleeve is realized soft the contact by described rubber neck and sub-conductor, and passes through bolt, described metal sleeve is arranged in the described endoporus, and sub-conductor is symmetrical arranged with respect to the center, axle center in described conductor spacer frame center hole; The second optical fiber grating sensing unit, bolt are on metal sleeve, and the contact of the described second optical fiber grating sensing unit contacts with described endoporus leading portion cam path inwall; The outer wall of described metal sleeve is provided with spherical pit, place steel ball in the described spherical pit, realization contacts with described endoporus stage casing inwall, thereby guarantee relatively rotating of described gland and described conductor spacer skeleton and described metal sleeve and described sub-conductor, and whole split conductor vibration monitoring device is fixed on the described sub-conductor; End cap is by being bolted to the end face of described conductor spacer frame center; End cap is by being bolted to described conductor spacer skeleton stretching wall and gland end face.
Preferably, described weight is spherical weight.
Preferably, described metal sleeve is formed by connecting by laterally zygomorphic two parts bolt.
Preferably, described split conductor vibration monitoring device also comprises bundle conductor level and vertical vibration monitoring device, described level is connected with the other end of camshaft by bolt with the vertical vibration monitoring device, it comprises the shell of a square bodily form, the mass of the one square bodily form, two springs and four fiber-optic grating sensors, wherein said shell is made up of upper shell and lower house, one end of described two springs connects the left and right side of described mass respectively, the other end connect respectively shell about two medial surfaces, described four fiber-optic grating sensors be installed in respectively mass up and down before and after four faces.
Preferably, the structure of the described first optical fiber grating sensing unit, the second optical fiber grating sensing unit and fiber-optic grating sensor is identical, all comprise a beams of metal that axial elasticity distortion can take place, one be bonded on this beam and can be with the distortion of beam fiber grating and a contact of synchronization telescope.
Preferably, described vibration monitor system for split conductor also comprises fiber-optic grating sensor and the fiber coupler for temperature compensation.
Preferably, a plurality of described split conductor vibration monitoring device dispersed placement are on lead.
A kind of vibration monitoring method for split conductor, it is characterized in that: during the bundle conductor vibration, bundle conductor and the relative ground of split conductor conductor spacer skeleton twist, because making the relative ground of camshaft, the gravity effect of weight keeps static, thereby caused relatively rotating of split conductor conductor spacer skeleton and camshaft, when split conductor conductor spacer skeleton and camshaft relatively rotate, gap between split conductor conductor spacer frame center hole leading portion inwall and the cam outer wall will change, suffered pressure and the strain in the first optical fiber grating sensing unit that be fixed on the skeleton this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the Optical Fiber Transmission of signal through being attached on the sub-conductor that this variation is produced arrives the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire then, through Optical Fiber composite overhead Ground Wire fiber Bragg grating (FBG) demodulator and computer system that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton of prior demarcation and the corresponding relation of camshaft relative rotation and the first optical fiber grating sensing unit strain and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of bundle conductor, thereby realized the monitoring to the bundle conductor twisting vibration.
Preferably, described vibration monitoring method for split conductor also comprises the monitoring to split conductor Shu Shuiping and vertical vibration, when the vibration of bundle conductor occurred level and vertical direction, mass can produce the pressure effect to fiber-optic grating sensor because of inertia effect, the strain that causes fiber-optic grating sensor changes, this variation will cause the variation of optical grating reflection ripple centre wavelength, this variation is passed fiber Bragg grating (FBG) demodulator back through optical fiber, then according to the corresponding relation of nominal light fiber grating sensor strain in advance and fiber grating reflection kernel wavelength variations and level and vertical direction acceleration, determine bundle conductor at the acceleration of level and vertical direction, thereby realized the monitoring to bundle conductor level and vertical vibration.
Preferably, described vibration monitoring method for split conductor also comprises the monitoring to the sub-conductor twisting vibration, when sub-conductor twists vibration, gravity effect because of split conductor conductor spacer skeleton and weight, make the face maintenance relatively of split conductor conductor spacer bone and cam pedestal static, thereby caused relatively rotating of split conductor conductor spacer skeleton and sub-conductor, when split conductor conductor spacer skeleton and sub-conductor relatively rotate, gap between the leading portion cam path inwall of metal sleeve outer wall and the endoporus that is made of gland and conductor spacer skeleton extension will change, suffered pressure and the strain in the second optical fiber grating sensing unit that be fixed on the metal sleeve this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the Optical Fiber Transmission of signal through being attached on the sub-conductor that this variation is produced arrives the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire then, through Optical Fiber composite overhead Ground Wire fiber Bragg grating (FBG) demodulator and computer system that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton of prior demarcation and the corresponding relation of sub-conductor relative rotation and the strain of optical fiber grating sensing unit and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of sub-conductor, thereby realized the monitoring to the sub-conductor twisting vibration.
Compared with prior art, the invention has the beneficial effects as follows:
(1) realized three directions of transmission line of electricity split conductor are vibrated, especially the monitoring of split conductor whole shelves twisting vibrations and sub-conductor twisting vibration;
(2) by the dispersed placement of sensor, realize the accurate monitoring to conductor vibration waveform and each point acceleration, can accurately obtain the conductor vibration parameter, be convenient to checking and improve the existing various models of vibration of transmission line of electricity; And realized and to have monitored in real time the multiple spot of transmission line of electricity torsional rigidity;
(3) because these system core parts---integrated novel split conductor the conductor spacer of Fiber Bragg Grating FBG, it is the design of carrying out at split conductor, can realize monitoring to all kinds split conductor by simple change, and less to the influence of this grade lead intrinsic property;
(4) use fiber-optic grating sensor as main sensing unit, can make system not disturbed by UHV (ultra-high voltage) and extra high voltage line forceful electric power magnetic environment, do not need the field power supply power supply, and by being combined with circuit existing fiber composite overhead ground wire, realized the remote low-loss transmission of signal.
(5) by the optical fiber grating temperature compensation sensor of arranging along the line, solved " the cross sensitivity problem " of strain and temperature, and realized the monitoring to temperature along the line.
(6) outside of inner sleeve is equipped with four spherical pits at the symmetric position place, and by place steel ball in pit, realization is connected with outer sleeve, thereby guarantees that outer sleeve can rotate around the axis of inner sleeve and lead, and has reduced friction force.
Description of drawings
Fig. 1 is the front view of split conductor vibration monitoring device of the present invention;
Fig. 2 is the front view of sub-conductor twisting vibration monitoring device of the present invention;
Fig. 3 is the partial sectional view of sub-conductor twisting vibration monitoring device of the present invention;
Fig. 4 is the partial sectional view of split conductor vibration monitoring device of the present invention.
Fig. 5 is optical fiber grating sensing cellular construction figure of the present invention.
Fig. 6 is the composition diagram of split conductor vibration monitor system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention done further specifying.
As shown in Figure 6, the split conductor vibration monitor system comprises: split conductor vibration monitoring device 25, optical fiber 26, is used for fiber-optic grating sensor 28, fiber coupler 27, fiber Bragg grating (FBG) demodulator 30 and the computer system 31 of temperature compensation at Optical Fiber composite overhead Ground Wire 29.
Wherein, as shown in Figure 1 and Figure 4, split conductor vibration monitoring device 25 comprises: a split conductor conductor spacer skeleton 1, and described split conductor conductor spacer skeleton 1 is used for guaranteeing each sub-conductor spacing; One camshaft 2, described camshaft 2 is connected with the stage casing of split conductor conductor spacer skeleton 1 center pit by bearing 20, guarantees that camshaft 2 can rotate relative to skeleton 1, and described camshaft 2 one ends connect a spherical weight 15; The first optical fiber grating sensing unit 3, on the conductor spacer skeleton 1 center pit leading portion inwall, the contact 21 of the described first optical fiber grating sensing unit 3 contacts with camshaft 2 cam outer walls, in order to monitor the twisting vibration of bundle conductor under being fixed on; Gland 12, described gland 12 is by being bolted on skeleton 1 extension, and in order to whole device is fixed on the sub-conductor 14, described gland 12 constitutes endoporus with the extension of skeleton 1, and the leading portion profile of endoporus is cam path.As shown in Figures 2 and 3, also has metal sleeve 9, rubber neck 10, described metal sleeve 9 is realized soft the contact by described rubber neck 10 with sub-conductor 14, and pass through bolt, guarantee that metal sleeve 9 can not relatively rotate and slippage by relative sub-conductor 14 with rubber neck 10, described metal sleeve 9 be located at endoporus in, sub-conductor 14 is symmetrical arranged with respect to the center, axle center of conductor spacer skeleton 1 center pit; The second optical fiber grating sensing unit 8, bolt are on metal sleeve 9, and the contact 21 of the described second optical fiber grating sensing unit 8 contacts with the endoporus leading portion inwall that skeleton 1 extension constitutes with gland 12; The outer wall of metal sleeve 9 is provided with spherical pit, place steel ball 24 in the described spherical pit, realize contacting of the endoporus stage casing inwall that constitutes with extension by gland 12 and skeleton 1, thereby guarantee relatively rotating of gland 12 and conductor spacer skeleton 1 and metal sleeve 9 and sub-conductor 14, and whole split conductor vibration monitoring device 25 is fixed on the sub-conductor; End cap 11 by being bolted to the end face at skeleton 1 center, is used for packaging conductive wire bundle vibration monitoring unit, to resist the influence of sleety weather; End cap (13) is by being bolted to skeleton (1) stretching wall and gland (12) end face.
Wherein, as shown in Figure 4, bundle conductor level and vertical vibration monitoring device, be connected by the other end of bolt with camshaft 2, it comprises the shell of a square bodily form, the mass 16 of a square bodily form, two springs 17 and four optical fiber grating sensing unit (4,5,6,7), wherein said shell is made up of upper shell 18 and lower house 19, one end of described two springs 17 connects the left and right side of described mass 16 respectively, the other end connect respectively shell about two medial surfaces, the position that be used for to keep mass 16; Described four optical fiber grating sensing unit (4,5,6,7) are installed in four faces in front and back up and down of mass 16 respectively, in order to level and the vertical vibration of monitoring bundle conductor.
Wherein, as shown in Figure 5, the first optical fiber grating sensing unit 3, the second optical fiber grating sensing unit 8 and fiber-optic grating sensor (4,5,6,7) structure is identical, all comprise one and be easy to take place the beams of metal 22 that axial elasticity is out of shape, one be bonded on this beam and can be with the distortion of beam fiber grating 23 and a contact 21 of synchronization telescope, realize and cam outer wall or bundle conductor level and vertical vibration monitoring device shell by contact 21, or the point of the endoporus stage casing inwall that is made of the extension of gland 12 and conductor spacer skeleton 1 contacts, and can guarantee that 23 of beams of metal 22 and fiber gratings bear responsive to axial force.Simultaneously, adopt certain installed under prestressing when mounted, to guarantee that each sensing unit is in the whole process of bundle conductor and every root conductor vibration, all the time with cam outer wall or bundle conductor level and vertical vibration monitoring device shell, or kept in touch by the endoporus stage casing inwall that the extension of gland 12 and conductor spacer skeleton 1 constitutes, and all be to bear pressure, guarantee that contact 21 can not become flexible and come off.
Monitoring method to the twisting vibration of split conductor bundle is as follows:
When split conductor Shu Zhendong, bundle conductor and split conductor conductor spacer skeleton 1 relative ground twist, because making camshaft 2 relative ground, the gravity effect of weight 15 keeps static, thereby caused relatively rotating of split conductor conductor spacer skeleton 1 and camshaft 2, when split conductor conductor spacer skeleton 1 and camshaft 2 relatively rotate, gap between split conductor conductor spacer skeleton 1 center pit leading portion inwall and camshaft 2 outer walls will change, optical fiber grating sensing unit 3 suffered pressure and the strains that be fixed on the skeleton 2 this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the optical fiber 26 of signal through being attached on the sub-conductor that this variation is produced is transferred to the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire 29 then, through Optical Fiber composite overhead Ground Wire 29 fiber Bragg grating (FBG) demodulator 30 and computer system 31 that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton 1 of prior demarcation and the corresponding relation of camshaft 2 relative rotations and 3 strains of optical fiber grating sensing unit and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of split conductor bundle, thereby realized the monitoring to the twisting vibration of split conductor bundle.
Monitoring method to split conductor Shu Shuiping and vertical vibration is as follows:
When the vibration of split conductor bundle occurred level and vertical direction, mass 16 can be to optical fiber grating sensing unit (4 because of inertia effect, 5,6,7) produce the pressure effect, cause optical fiber grating sensing unit (4,5,6,7) strain changes, and this variation will cause the variation of optical grating reflection ripple centre wavelength, and this variation is passed fiber Bragg grating (FBG) demodulator 30 back through optical fiber 26, demarcate optical fiber grating sensing unit (4 in advance before installing according to whole device then, 5,6,7) corresponding relation of strain and fiber grating reflection kernel wavelength variations and level and vertical direction acceleration, just can determine the split conductor bundle at the acceleration of level and vertical direction, thereby realize the monitoring to split conductor Shu Shuiping and vertical vibration.
Monitoring method to the sub-conductor twisting vibration is as follows:
When sub-conductor 14 twists vibration, gravity effect because of split conductor conductor spacer skeleton 1 and weight 15, make split conductor conductor spacer skeleton 1 keep static with camshaft 2 relative ground, thereby caused relatively rotating of split conductor conductor spacer skeleton 1 and sub-conductor 14, when split conductor conductor spacer skeleton 1 and sub-conductor 14 relatively rotate, gap between metal sleeve 9 outer walls and the endoporus leading portion cam path inwall that is made of gland 12 and conductor spacer skeleton 1 extension will change, optical fiber grating sensing unit 8 suffered pressure and the strains that be fixed on the metal sleeve 9 this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the optical fiber 26 of signal through being attached on the sub-conductor that this variation is produced is transferred to the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire 29 then, through Optical Fiber composite overhead Ground Wire fiber Bragg grating (FBG) demodulator 30 and computer system 31 that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton 1 of prior demarcation and the corresponding relation of sub-conductor 14 relative rotations and 8 strains of optical fiber grating sensing unit and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of sub-conductor 14, thereby realized the monitoring to sub-conductor 14 twisting vibrations.
Should be emphasized that; accompanying drawing has only been showed a kind of more representational novel damping conductor spacer that is applicable to conductors on quad bundled; any those skilled in the art that; in technology of the present invention and core concept scope; the simple change that can expect easily or replacement; and obtain being applicable to and all should be encompassed in the conductor spacer of other different sub-conductor numbers within protection scope of the present invention.
Claims (10)
1. a vibration monitor system that is used for split conductor comprises: split conductor vibration monitoring device (25), optical fiber (26), Optical Fiber composite overhead Ground Wire (29), fiber Bragg grating (FBG) demodulator (30) and computer system (31); It is characterized in that: described split conductor vibration monitoring device (25) comprising: a split conductor conductor spacer skeleton (1); One camshaft (2), described camshaft (2) is connected with the stage casing of described conductor spacer skeleton (1) center pit by bearing (20), and described camshaft (2) one ends connect a weight (15); The first optical fiber grating sensing unit (3) is fixed on described conductor spacer skeleton (1) the center pit leading portion inwall, and the contact (21) of the described first optical fiber grating sensing unit (3) contacts with camshaft (2) cam outer wall; Gland (12), described gland (12) be by being bolted on described conductor spacer skeleton (1) extension, and constitute endoporus with the extension of described conductor spacer skeleton (1), and the leading portion profile of described endoporus is cam path; Metal sleeve (9), rubber neck (10), described metal sleeve (9) is realized soft the contact by described rubber neck (10) with sub-conductor (14), and pass through bolt, described metal sleeve (9) is arranged in the described endoporus, and sub-conductor (14) is symmetrical arranged with respect to the center, axle center of described conductor spacer skeleton (1) center pit; The second optical fiber grating sensing unit (8), bolt are on metal sleeve (9), and the contact (21) of the described second optical fiber grating sensing unit (8) contacts with described endoporus leading portion cam path inwall; The outer wall of described metal sleeve (9) is provided with spherical pit, place steel ball (24) in the described spherical pit, realization contacts with described endoporus stage casing inwall, thereby guarantee relatively rotating of described gland (12) and described conductor spacer skeleton (1) and described metal sleeve (9) and described sub-conductor (14), and whole split conductor vibration monitoring device (25) is fixed on the described sub-conductor (14); End cap (11) is by being bolted to the end face at described conductor spacer skeleton (1) center; End cap (13) is by being bolted to described conductor spacer skeleton (1) stretching wall and gland (12) end face.
2. split conductor vibration monitor system as claimed in claim 1, it is characterized in that: described weight (15) is spherical weight.
3. split conductor vibration monitor system as claimed in claim 1, it is characterized in that: described metal sleeve (9) is formed by connecting by laterally zygomorphic two parts bolt.
4. split conductor vibration monitor system as claimed in claim 1, it is characterized in that: described split conductor vibration monitoring device (25) also comprises bundle conductor level and vertical vibration monitoring device, described level is connected by the other end of bolt with camshaft (2) with the vertical vibration monitoring device, it comprises the shell of a square bodily form, the mass of the one square bodily form (16), two springs (17) and four fiber-optic grating sensors (4,5,6,7), wherein said shell is made up of upper shell (18) and lower house (19), one end of described two springs (17) connects the left and right side of described mass (16) respectively, the other end connect respectively shell about two medial surfaces, described four fiber-optic grating sensors (4,5,6,7) be installed in respectively mass (16) up and down before and after four faces.
5. split conductor vibration monitor system as claimed in claim 1, it is characterized in that: the described first optical fiber grating sensing unit (3), second optical fiber grating sensing unit (8) and the fiber-optic grating sensor (4,5,6,7) structure is identical, all comprise a beams of metal (22) that axial elasticity distortion can take place, one be bonded on this beam and can be with the distortion of beam fiber grating (23) and a contact (21) of synchronization telescope.
6. split conductor vibration monitor system as claimed in claim 1, it is characterized in that: described vibration monitor system for split conductor also comprises fiber-optic grating sensor (28) and the fiber coupler (27) for temperature compensation.
7. vibration monitor system as claimed in claim 1, it is characterized in that: a plurality of described split conductor vibration monitoring devices (25) dispersed placement is on lead.
8. method of using the described split conductor vibration monitor system of aforementioned each claim split conductor to be carried out vibration monitoring, it is characterized in that: during the bundle conductor vibration, bundle conductor and the relative ground of split conductor conductor spacer skeleton twist, because making the relative ground of camshaft, the gravity effect of weight keeps static, thereby caused relatively rotating of split conductor conductor spacer skeleton and camshaft, when split conductor conductor spacer skeleton and camshaft relatively rotate, gap between split conductor conductor spacer frame center hole leading portion inwall and the cam outer wall will change, suffered pressure and the strain in the first optical fiber grating sensing unit that be fixed on the skeleton this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the Optical Fiber Transmission of signal through being attached on the sub-conductor that this variation is produced arrives the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire then, through Optical Fiber composite overhead Ground Wire fiber Bragg grating (FBG) demodulator and computer system that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton of prior demarcation and the corresponding relation of camshaft relative rotation and the first optical fiber grating sensing unit strain and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of bundle conductor, thereby realized the monitoring to the bundle conductor twisting vibration.
9. the method for split conductor vibration monitoring as claimed in claim 7, it is characterized in that: described vibration monitoring method for split conductor also comprises the monitoring to split conductor Shu Shuiping and vertical vibration, when the vibration of bundle conductor occurred level and vertical direction, mass can produce the pressure effect to fiber-optic grating sensor because of inertia effect, the strain that causes fiber-optic grating sensor changes, this variation will cause the variation of optical grating reflection ripple centre wavelength, this variation is passed fiber Bragg grating (FBG) demodulator back through optical fiber, then according to the corresponding relation of nominal light fiber grating sensor strain in advance and fiber grating reflection kernel wavelength variations and level and vertical direction acceleration, determine bundle conductor at the acceleration of level and vertical direction, thereby realized the monitoring to bundle conductor level and vertical vibration.
10. the method for split conductor vibration monitoring as claimed in claim 7, it is characterized in that: described vibration monitoring method for split conductor also comprises the monitoring to the sub-conductor twisting vibration, when sub-conductor twists vibration, gravity effect because of split conductor conductor spacer skeleton and weight, make the face maintenance relatively of split conductor conductor spacer bone and cam pedestal static, thereby caused relatively rotating of split conductor conductor spacer skeleton and sub-conductor, when split conductor conductor spacer skeleton and sub-conductor relatively rotate, gap between the leading portion cam path inwall of metal sleeve outer wall and the endoporus that is made of gland and conductor spacer skeleton extension will change, suffered pressure and the strain in the second optical fiber grating sensing unit that be fixed on the metal sleeve this moment will change, this variation will cause the variation of optical grating reflection ripple centre wavelength, the Optical Fiber Transmission of signal through being attached on the sub-conductor that this variation is produced arrives the shaft tower end, import this signal into Optical Fiber composite overhead Ground Wire then, through Optical Fiber composite overhead Ground Wire fiber Bragg grating (FBG) demodulator and computer system that this signal is transferred to transformer station are analyzed and stored then, according to the split conductor conductor spacer skeleton of prior demarcation and the corresponding relation of sub-conductor relative rotation and the strain of optical fiber grating sensing unit and fiber grating reflection kernel wavelength variations, determine corner and the angular acceleration of sub-conductor, thereby realized the monitoring to the sub-conductor twisting vibration.
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