CN104577927A - Self-adaption composite heating power ice melting cooperating method - Google Patents

Self-adaption composite heating power ice melting cooperating method Download PDF

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Publication number
CN104577927A
CN104577927A CN201510029885.2A CN201510029885A CN104577927A CN 104577927 A CN104577927 A CN 104577927A CN 201510029885 A CN201510029885 A CN 201510029885A CN 104577927 A CN104577927 A CN 104577927A
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ice
melt
time
real
demand
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CN104577927B (en
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王波
方华亮
吴伟
肖湘衡
彭辉
孙健波
李大虎
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Wuhan University WHU
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Wuhan University WHU
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables

Abstract

The invention discloses a self-adaption composite heating power ice melting cooperating method. A load transfer ice melting method, a direct-current ice melting method and a radiation absorption type coating ice melting method are adopted for self-adaption cooperation, and therefore the optimal ice melting effect is achieved. The method comprises the following steps that 1, primary configuration parameters of an ice melting cooperating scheme are determined; 2, distributing setting of the self-adaption ice melting method is carried out according to a trigger condition and the configuration parameters. According to the self-adaption ice melting cooperating method, the control range is expanded by dynamically adjusting the ice melting need judgment standard. The ice melting effects of various ice melting methods can be effectively utilized, waste is reduced, and the direct average ratio of an ice melting means is restrained.

Description

A kind of self adaptation compound thermal ice-melting fitting method
Technical field
The invention belongs to electric power project engineering field, particularly relate to the self adaptation fitting method of the many ice-melting modes of a kind of transmission line.
Background technology
In recent years, the icing disaster increased frequency that transmission line causes, popularization, harm increase the weight of, and bring tremendous influence to the normal operation of electrical network and living standards of the people.
For solving a difficult problem for transmission line this serious threat safe operation of power system of icing in the winter time, large quantity research being carried out to powerline ice-covering problem both at home and abroad, and having proposed many transmission line de-icing methods.When forming serious icing, the normal method adopted is mechanical deicing's method and thermal ice-melting method.Mechanical deicing's operation is loaded down with trivial details, and easy damage wires, China still adopts in Practical Project, general employing thermal ice-melting method in practical application.
Thermal ice-melting method has several mode, mainly comprises the radiation-absorbing type coating ice-melting method of load transfer plan method, direct current ice-melting method, absorption sunlight.
Load transfer plan ice-melt ratio juris is focused on certain transmission line by the load transfer plan on other one or several transmission lines to power, thus increases the current strength of this transmission line, makes the method for circuit heating ice-melt.The drawback of this kind of method can not implement transfer to the load of single power supply, and operate certain limitation.
Direct current ice-melt ratio juris is using ice coating wire as load, applies DC power supply, provides short circuit current heating wires that icing is melted by low voltage.If adopt system power supply to provide DC ice melting power supply by rectifying device, the selectable scheme of rectifying device has two kinds: controlled rectification and uncontrollable rectification.Uncontrollable rectifying device price is relatively cheap, but when being provided rectifier power source by system, can not realize zero up-flow, the method for impacting with high pressure short circuit line can only be adopted to provide ice melting current, so have certain impact to system; And the voltage adjustable extent of general transformer is less, when causing adopting this scheme, DC ice-melting length is restricted.Adopt controllable rectifying device scheme can realize stepping up from zero and up-flow; By current closed-loop, can to different length, dissimilar circuit provides same ice melting current, and adaptability is better.But controllable rectifying device structure relative complex; Work time-harmonic wave content is high and reactive loss is large, needs the alternating current filter configuring certain capacity to carry out reactive power compensation and filtering; And need the proterctive equipment of configuration response, invest quite large.
Radiation-absorbing type coating ice-melting method reaches deicing effect by the heat absorbing sunlight, utilizes organic carbon black to coordinate Si0 2or make emitter with C, Al, improve spectral selection, and with compounds such as Organic fluoride, organosilicon, alkane and alkene for matrix, reach to increase for the purpose of hydrophobicity, but they can lose effect in time gradually, anti-icing persistence is limited, needs again to brush before ice and snow weather, wastes time and energy and effect is bad.
As can be seen here, load transfer plan ice-melting method, direct current ice-melting method, radiation-absorbing type coating ice-melting method cut both ways.
Summary of the invention
The present invention considers the pluses and minuses of load transfer plan ice-melting method, direct current ice-melting method, radiation-absorbing type coating ice-melting method comprehensively, there is provided a kind of self adaptation to coordinate thus reach the method for optimum ice-melt effect, good ice-melt characteristic can be had under the line ice coating situation in different transformer station regions.
The technical solution adopted in the present invention is: a kind of self adaptation compound thermal ice-melting fitting method, adopts load transfer plan ice-melting method, direct current ice-melting method, radiation-absorbing type coating ice-melting method three kinds of method self adaptations coordinate thus reach optimum ice-melt effect; It is characterized in that, comprise the following steps:
Step 1: the initial configuration parameters determining ice-melt coordinated scheme;
Step 2: the distribution carrying out self adaptation de-icing method according to trigger condition and above-mentioned configuration parameter is arranged.
As preferably, the specific implementation of step 1 comprises following sub-step:
Step 1.1: determine ice covering thickness H and operable ice-melt means number M, and ice-melt scope (MaxDistanceArray) array of various ice-melt means is sorted from small to large, wherein MaxDistanceArray=[A 0, A 1, A 2..., A m], A 0, A 1, A 2..., A mrepresent the ultimate range of each its ice-melt scope of ice-melt means;
Step 1.2: the maximum Hmax determining ice covering thickness H, Hmax > N*A m, N>=2, N ∈ Ζ;
Step 1.3: determine initial ice covering thickness (Hini) and current time ice covering thickness (HNow), wherein Hini=A j, (0≤j≤M), HNow=Hini, j represent initial ice-melt means, get any one between 0 to M;
Step 1.4: will the increase in demand thresholding of ice-melt scope be needed to be configured to Thda, and Thda≤Hmax;
Step 1.5: reduce thresholding by needing the real-time requirement of ice-melt scope and be configured to Thdb, and Thdb < Thda.
As preferably, the specific implementation of step 2 comprises following sub-step:
Step 2.1: the reporting events judging whether icing situation report, if had, performs step 2.2, otherwise performs step 2.13;
Step 2.2: determine whether that ice-melt real-time requirement increases reporting events, if it is perform step 2.3, otherwise perform step 2.6;
Step 2.3: judge whether j+1 is more than or equal to M, if it is performs step 2.4, otherwise performs step 2.11;
Step 2.4: the real-time ice covering thickness HNow=A of current time m, then perform step 2.5;
Step 2.5: upgrade real-time ice-melt demand and reduce thresholding Thdb=A (M-1), then perform step 2.13;
Step 2.6: ice-melt demand reduces reporting events in real time, then performs step 2.7;
Step 2.7: judge whether j-1 is less than or equal to 0, if it is performs step 2.8, otherwise performs step 2.9;
Step 2.8: the real-time ice covering thickness HNow=A of current time 0, then perform step 2.13;
Step 2.9: the real-time ice covering thickness HNow=A of current time j-1;
Step 2.10: upgrade real-time ice-melt demand and reduce thresholding Thdb=Α j-2, then perform step 2.13;
Step 2.11: the real-time ice covering thickness HNow=A of current time j+1, then perform step 2.12;
Step 2.12: upgrade real-time ice-melt demand and reduce thresholding Thdb=A j, then perform step 2.13
Step 2.13: wait for.
As preferably, trigger condition described in step 2 is, when the ice covering thickness real-time monitored exceedes real-time ice-melt increase in demand thresholding, and when still exceeding this thresholding after increasing ice-melt and triggering threshold time, real-time ice-melt increase in demand event triggers, and report real-time ice-melt increase in demand, no longer report within the increase ice-melt suspension time after at every turn reporting, when the ice-melt situation real-time monitored reduces thresholding lower than real-time ice-melt demand, and time after reducing ice-melt demand and triggering threshold time still lower than this thresholding, real-time ice-melt demand reduces event and triggers, and report real-time ice-melt demand to reduce, no longer report within the minimizing ice-melt thickness suspension time after at every turn reporting.
Self adaptation ice-melt fitting method of the present invention, improves the scope of control by dynamic conditioning ice-melt demand judgement standard.Effectively can utilize the ice-melt effect of various de-icing method, cut the waste, suppress ice-melt means directly all than.
Accompanying drawing explanation
Fig. 1: be the inventive method flow chart.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with drawings and Examples, the present invention is described in further detail, should be appreciated that exemplifying embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Ask for an interview Fig. 1, a kind of self adaptation compound thermal ice-melting fitting method of the present invention, adopt load transfer plan ice-melting method, direct current ice-melting method, radiation-absorbing type coating ice-melting method three kinds of method self adaptations coordinate thus reach optimum ice-melt effect; Specifically comprise the following steps:
Step 1: the initial configuration parameters determining ice-melt coordinated scheme; Specific implementation comprises following sub-step:
Step 1.1: determine ice covering thickness H and operable ice-melt means M=3, and ice-melt scope (MaxDistanceArray) array of various ice-melt means is sorted from small to large, wherein MaxDistanceArray=[0 124689 12 1624]/10m;
Step 1.2: the maximum Hmax determining ice covering thickness H, Hmax=22cm;
Step 1.3: determine initial ice covering thickness (Hini) and current time ice covering thickness (HNow), wherein Hini=4cm=A3, current time ice covering thickness HNow=Hini;
Step 1.4: will the increase in demand thresholding of ice-melt scope be needed to be configured to Thda=22cm, and Thda≤Hmax;
Step 1.5: reduce thresholding by needing the real-time requirement of ice-melt scope and be configured to Thdb=2cm, and Thdb < Thda.
When the ice covering thickness real-time monitored exceedes real-time ice-melt increase in demand thresholding, and when still exceeding this thresholding after increasing ice-melt and triggering threshold time, real-time ice-melt increase in demand event triggers, and report real-time ice-melt increase in demand, no longer report within the increase ice-melt suspension time after at every turn reporting, when the ice covering thickness real-time monitored reduces thresholding lower than real-time ice-melt demand, and time after reducing ice-melt and triggering threshold time still lower than this thresholding, real-time ice-melt demand reduces event and triggers, and report ice covering thickness real-time requirement to reduce, no longer report within the minimizing ice-melt suspension time after at every turn reporting.
Step 2: the distribution carrying out self adaptation de-icing method according to trigger condition and above-mentioned configuration parameter is arranged.Specific implementation comprises following sub-step:
Step 2.1: the reporting events judging whether icing situation report, if had, performs step 2.2, otherwise performs step 2.13;
Step 2.2: determine whether that ice-melt real-time requirement increases reporting events, if it is perform step 2.3, otherwise perform step 2.6;
Step 2.3: judge whether j+1 is more than or equal to M, if it is performs step 2.4, otherwise performs step 2.11;
Step 2.4: the real-time ice covering thickness HNow=A of current time m, then perform step 2.5;
Step 2.5: upgrade real-time ice-melt demand and reduce thresholding Thdb=A (M-1), then perform step 2.13;
Step 2.6: ice-melt demand reduces reporting events in real time, then performs step 2.7;
Step 2.7: judge whether j-1 is less than or equal to 0, if it is performs step 2.8, otherwise performs step 2.9;
Step 2.8: the real-time ice covering thickness HNow=A of current time 0, then perform step 2.13;
Step 2.9: the real-time ice covering thickness HNow=A of current time j-1;
Step 2.10: upgrade real-time ice-melt demand and reduce thresholding Thdb=Α j-2, then perform step 2.13;
Step 2.11: the real-time ice covering thickness HNow=A of current time j+1, then perform step 2.12;
Step 2.12: upgrade real-time ice-melt demand and reduce thresholding Thdb=A j, then perform step 2.13
Step 2.13: wait for.
Adaptive icing fitting method of the present invention, improves the scope of control by dynamic conditioning ice-melt demand judgement standard.Effectively can utilize the ice-melt effect of various de-icing method, cut the waste, suppress ice-melt means directly all than.
Should be understood that, the part that this specification does not elaborate all belongs to prior art.
Should be understood that; the above-mentioned description for preferred embodiment is comparatively detailed; therefore the restriction to scope of patent protection of the present invention can not be thought; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that the claims in the present invention protect; can also make and replacing or distortion, all fall within protection scope of the present invention, request protection range of the present invention should be as the criterion with claims.

Claims (4)

1. a self adaptation compound thermal ice-melting fitting method, adopts load transfer plan ice-melting method, direct current ice-melting method, radiation-absorbing type coating ice-melting method three kinds of method self adaptations coordinate thus reach optimum ice-melt effect; It is characterized in that, comprise the following steps:
Step 1: the initial configuration parameters determining ice-melt coordinated scheme;
Step 2: the distribution carrying out self adaptation de-icing method according to trigger condition and above-mentioned configuration parameter is arranged.
2. self adaptation compound thermal ice-melting fitting method according to claim 1, it is characterized in that, the specific implementation of step 1 comprises following sub-step:
Step 1.1: determine ice covering thickness H and operable ice-melt means number M, and ice-melt scope (MaxDistanceArray) array of various ice-melt means is sorted from small to large, wherein MaxDistanceArray=[A 0, A 1, A 2..., A m], A 0, A 1, A 2..., A mrepresent the ultimate range of each its ice-melt scope of ice-melt means;
Step 1.2: the maximum Hmax determining ice covering thickness H, Hmax > N*A m, N>=2, N ∈ Ζ;
Step 1.3: determine initial ice covering thickness (Hini) and current time ice covering thickness (HNow), wherein Hini=A j, (0≤j≤M), HNow=Hini, j represent initial ice-melt means, get any one between 0 to M;
Step 1.4: will the increase in demand thresholding of ice-melt scope be needed to be configured to Thda, and Thda≤Hmax;
Step 1.5: reduce thresholding by needing the real-time requirement of ice-melt scope and be configured to Thdb, and Thdb < Thda.
3. self adaptation compound thermal ice-melting fitting method according to claim 2, it is characterized in that, the specific implementation of step 2 comprises following sub-step:
Step 2.1: the reporting events judging whether icing situation report, if had, performs step 2.2, otherwise performs step 2.13;
Step 2.2: determine whether that ice-melt real-time requirement increases reporting events, if it is perform step 2.3, otherwise perform step 2.6;
Step 2.3: judge whether j+1 is more than or equal to M, if it is performs step 2.4, otherwise performs step 2.11;
Step 2.4: the real-time ice covering thickness HNow=A of current time m, then perform step 2.5;
Step 2.5: upgrade real-time ice-melt demand and reduce thresholding Thdb=A (M-1), then perform step 2.13;
Step 2.6: ice-melt demand reduces reporting events in real time, then performs step 2.7;
Step 2.7: judge whether j-1 is less than or equal to 0, if it is performs step 2.8, otherwise performs step 2.9;
Step 2.8: the real-time ice covering thickness HNow=A of current time 0, then perform step 2.13;
Step 2.9: the real-time ice covering thickness HNow=A of current time j-1;
Step 2.10: upgrade real-time ice-melt demand and reduce thresholding Thdb=Α j-2, then perform step 2.13;
Step 2.11: the real-time ice covering thickness HNow=A of current time j+1, then perform step 2.12;
Step 2.12: upgrade real-time ice-melt demand and reduce thresholding Thdb=A j, then perform step 2.13
Step 2.13: wait for.
4. according to claim 1, self adaptation compound thermal ice-melting fitting method described in 2 or 3, it is characterized in that: the trigger condition described in step 2 is, when the ice covering thickness real-time monitored exceedes real-time ice-melt increase in demand thresholding, and when still exceeding this thresholding after increasing ice-melt and triggering threshold time, real-time ice-melt increase in demand event triggers, and report real-time ice-melt increase in demand, no longer report within the increase ice-melt suspension time after at every turn reporting, when the ice-melt situation real-time monitored reduces thresholding lower than real-time ice-melt demand, and time after reducing ice-melt demand and triggering threshold time still lower than this thresholding, real-time ice-melt demand reduces event and triggers, and report real-time ice-melt demand to reduce, no longer report within the minimizing ice-melt thickness suspension time after at every turn reporting.
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CN111525446A (en) * 2020-06-03 2020-08-11 东北大学 Deicing method for icing power transmission line by combining short-circuit current and impact load

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CN101369731A (en) * 2008-10-08 2009-02-18 中国电力科学研究院 Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus
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CN110535061A (en) * 2019-07-15 2019-12-03 贵州电网有限责任公司 One kind being used for the online ice-melt substation back brake method of electric line
CN111525446A (en) * 2020-06-03 2020-08-11 东北大学 Deicing method for icing power transmission line by combining short-circuit current and impact load

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