CN103645157A - Novel online measurement system for salt deposit density of insulator surface of electric transmission and transformation equipment - Google Patents
Novel online measurement system for salt deposit density of insulator surface of electric transmission and transformation equipment Download PDFInfo
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- CN103645157A CN103645157A CN201310645797.6A CN201310645797A CN103645157A CN 103645157 A CN103645157 A CN 103645157A CN 201310645797 A CN201310645797 A CN 201310645797A CN 103645157 A CN103645157 A CN 103645157A
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Abstract
The invention provides a novel online measurement system for salt deposit density of an insulator surface of electric transmission and transformation equipment. The novel online measurement system comprises a bare fiber, single mode fibers, optical flange seats and a vehicle-mounted measuring instrument, wherein the bare fiber is mounted on the insulator surface of the electric transmission and transformation equipment; the single mode fibers which are integrated with the bare fiber are arranged at the two ends of the bare fiber; one optical flange seat is connected with the lower end part of each single mode fiber at each end of the bare fiber; the vehicle-mounted measuring instrument is internally provided with a single vertical mode laser device and a photoelectric converter with an amplification function; the photoelectric converter with the amplification function is connected with a collector and the collector is connected with a computer. The novel online measurement system for the salt deposit density of the insulator surface of the electric transmission and transformation equipment has the beneficial effects that the system is small in volume, is passive and has no electronic elements; a discharging end is not caused and the electromagnetism distribution of a power transmission conductor is not influenced; the system resists electromagnetic interference and is low in cost; the measurement density is easy to increase and a distribution type measurement manner is formed; the online measurement system for the salt deposit density of the insulator of the electric transmission and transformation equipment is established and a power grid pollution flashover accident caused by environmental pollution is avoided.
Description
Technical field
The invention belongs to sensing measurement monitoring technical field, particularly the close on-line measurement system of a kind of novel power transmission and transforming equipment insulator surface salt.
Background technology
Power transmission and transforming equipment insulator surface is easy to be subject to the impact of operating area environmental contaminants, so that the pollutant of insulator surface accumulation is subject to the time of tide to cause insulation breakdown flashover, and insulation flashover may cause the accident, and affects power transmission and transforming equipment reliability of operation.Electrical equipment pollution flashover accident happens occasionally at nationwide integrated power grid, and particularly nationwide integrated power grid large-area pollution flashover has occurred to electrical production, has caused massive losses.The generation of prevention, minimizing pollution flashover accident is of great significance for power grid security reliability service tool.According to anti-pollution flashover accident expert group of country, the result of study of China's grid pollution flashover accident is shown, cause the main cause of China's pollution flashover accident to be: the filthy levels of environment of China is very fast, this is relevant with various places regionality industrial structure etc.; " the external insulation level of electrical equipment does not meet the requirement of local gradation for surface pollution.Although each electric power enterprise has been taked the modification measures of anti-gradation for surface pollution, specifically implement with blindness, lack the insulation configuration foundation quantizing; At present the monitoring of field apparatus filth degree level is lacked to effective technological means, especially cannot accurately grasp in year the development trend of the highest pollution level under Various Seasonal and meteorological condition and pollution level.According to the requirement of GB, in to the filthy condition evaluation of power transmission and transforming equipment, salt is close is only parameter that can be quantitative.For guaranteeing safe and reliable power supply, power department must clean insulator chain by predetermined period, and the close value of the salt of pollutant on insulator arrangement is depended at cleaning period interval.In order to determine the reasonable cycle of preventive maintenance, guarantee the safe operation of electrical network, should set up the close continuous on-line monitoring system of power transmission and transforming equipment insulation alite, to insulation status is implemented to monitoring, avoid the grid pollution flashover accident causing due to environmental pollution.
Summary of the invention
The object of the invention is to provide the close on-line measurement system of a kind of novel power transmission and transforming equipment insulator surface salt, to set up the close continuous distribution on-line monitoring system of power transmission and transforming equipment insulation alite, to insulation status is implemented to monitoring, avoids the grid pollution flashover accident causing due to environmental pollution.
The present invention is the problems that, reliability of operation high at the cost for the close detection of existing insulation alite (this device easily cause discharge end, destroyed power transmission conductor electromagnetism distribute) etc. exists, and proposes following invention route.
Content of the present invention:
The close on-line measurement system of novel power transmission and transforming equipment insulator surface salt, is characterized in that: have the bare fibre that is arranged on power transmission and transforming equipment insulator surface; Respectively have with bare fibre two ends the single-mode fiber being integrated with bare fibre; The single-mode fiber bottom at bare fibre two ends respectively connects a light flange seat; Also a vehicle-mounted surveying instrument, has single longitudinal mode laser in vehicle-mounted surveying instrument, the photoelectric commutator that band amplifies, and the photoelectric commutator that band amplifies connects collector, and collector connects computing machine.
Two light flange seats in the single-mode fiber lower end at bare fibre two ends are contained in locking cabinet.
Beneficial effect of the present invention:
This invention system bulk small, passive and without any electronic component, without causing discharge end, do not affect that power transmission conductor electromagnetism distributes, anti-strong electromagnetic, with low cost, be easy to increase density measurement, form distributed metering system, set up the close on-line monitoring system of power transmission and transforming equipment insulation alite, avoid the grid pollution flashover accident causing due to environmental pollution.
Accompanying drawing explanation
Fig. 1 is the close on-line measurement system of novel power transmission and transforming equipment insulator surface salt
In figure, 1 is bare fibre; 2 is single-mode fiber; 3-1 and 3-2 are light flange seat; 4 is locking cabinet.5 is single longitudinal mode laser; 6 photoelectric commutators for band amplification; 7 is collector; 8 is computing machine; 9 is insulator; 10 is vehicle-mounted surveying instrument
Embodiment
The close on-line measurement system of novel power transmission and transforming equipment insulator surface salt, has the bare fibre that is arranged on power transmission and transforming equipment insulator surface; Respectively have with bare fibre two ends the single-mode fiber being integrated with bare fibre; The single-mode fiber bottom at bare fibre two ends respectively connects a light flange seat; Also a vehicle-mounted surveying instrument, has single longitudinal mode laser in vehicle-mounted surveying instrument, the photoelectric commutator that band amplifies, and the photoelectric commutator that band amplifies connects collector, and collector connects computing machine.Two light flange seats in the single-mode fiber lower end at bare fibre two ends are contained in locking cabinet.
Monitoring principle
A single-mode fiber 2 is installed on insulator 9, become anti-U-shaped shape, crust is pushed on the top of its anti-U aside, and overlay is peelled off, the top of its anti-U becomes bare fibre 1, according to the linear meticulous minimizing with dirt thickness of its light intensity value, pass between luminous energy loss Δ P and refractive index n is: Δ P=U(n) ... (1), the refractive index n of optical waveguide and air humidity φ, environment temperature t, dunghill (as salt) is closely related with the ratio of components K of dust, pass between refractive index n and other correlative factors is: n=u(φ, t, K, D) ... (2) in formula, D is that salt is close.Formula (2) substitution formula (1) can be obtained: Δ P=U(u(φ, t, K, D)), according to correlation formula and mathematical model, can derive the close value D of salt, can draw the close numerical value of salt, the two ends of its anti-U-shaped hang down into 3 meters of on the distance ground of electric power pylon, the interface at two ends is light flange seat 3-1 and 3-2, and this flange seat is placed in airtight locking cabinet 4.
In vehicle-mounted surveying instrument 10,5 is single longitudinal mode laser; 6 photoelectric commutators for band amplification; 7 is collector; 8 is computing machine; The photoelectric commutator that band amplifies connects collector, collector connects computing machine.
Measuring method:
During measurement, open the cabinet 4 below of electric power pylon, the interior smooth flange seat 3-1 of single longitudinal mode laser access cabinet 4, the interior smooth flange seat 3-2 of photoelectric commutator access cabinet 4 that band amplifies, by vehicle-mounted surveying instrument, record collection and be worth, through converting, obtain the close numerical value of salt on insulator.Specifically single longitudinal mode laser access light flange seat 3-1, sends beam of laser; The photoelectric commutator access light flange seat 3-2 that band amplifies, the laser that the photoelectric commutator that band amplifies receives, by collector pass to, computer recording collection is worth, and according to the linear meticulous minimizing with dirt thickness of its light intensity value, obtains the close numerical value of salt on insulator through converting.
Claims (2)
1. the close on-line measurement system of novel power transmission and transforming equipment insulator surface salt, is characterized in that: have the bare fibre that is arranged on power transmission and transforming equipment insulator surface; Respectively have with bare fibre two ends the single-mode fiber being integrated with bare fibre; The single-mode fiber bottom at bare fibre two ends respectively connects a light flange seat; Also a vehicle-mounted surveying instrument, has single longitudinal mode laser in vehicle-mounted surveying instrument, the photoelectric commutator that band amplifies, and the photoelectric commutator that band amplifies connects collector, and collector connects computing machine.
2. the close on-line measurement system of novel power transmission and transforming equipment insulator surface salt according to claim 1, is characterized in that: two light flange seats in the single-mode fiber lower end at bare fibre two ends are contained in locking cabinet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310645797.6A CN103645157B (en) | 2013-12-04 | 2013-12-04 | The close on-line measurement system of a kind of novel power transmission and transforming equipment insulator surface salt |
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| CN201310645797.6A CN103645157B (en) | 2013-12-04 | 2013-12-04 | The close on-line measurement system of a kind of novel power transmission and transforming equipment insulator surface salt |
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| CN103645157A true CN103645157A (en) | 2014-03-19 |
| CN103645157B CN103645157B (en) | 2015-11-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168581A (en) * | 2016-09-23 | 2016-11-30 | 华南师范大学 | Transmission line equipment salt dense system and method based on optical fiber collimator |
| CN106442383A (en) * | 2016-09-13 | 2017-02-22 | 广西电网有限责任公司电力科学研究院 | Real time supervision method of aging level of anti-pollution-flashover RTV coating for power supply system |
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| CN106442383B (en) * | 2016-09-13 | 2019-03-19 | 广西电网有限责任公司电力科学研究院 | A kind of degree of aging method of real-time of electric system antifouling work RTV coating |
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| CN103645157B (en) | 2015-11-18 |
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