CN208337114U - Power grid arragement construction and system based on ice-melt function - Google Patents
Power grid arragement construction and system based on ice-melt function Download PDFInfo
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- CN208337114U CN208337114U CN201821048812.3U CN201821048812U CN208337114U CN 208337114 U CN208337114 U CN 208337114U CN 201821048812 U CN201821048812 U CN 201821048812U CN 208337114 U CN208337114 U CN 208337114U
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Abstract
The utility model provides power grid arragement construction and system based on ice-melt function, including providing the non-ice-melt side three-phase line of transformer and transformer ice-melt side three-phase line of ice-melt power supply；To transformer ice-melt side three-phase line by way of converting in turn, two-phase in three-phase line is carried out respectively in parallel two-by-two, two-phase after parallel connection achievees the effect that extend ice-melt distance and promotes ice-melt speed with non-phase composition operating loop in parallel to reduce impedance loop.The utility model is in such a way that parallel running and phase-deficient operation match, efficiently solve the problems, such as the ice-melt under the extreme weathers such as ice damage, for three-phase direct short-circuit ice-melt, the utility model not only significantly extends ice-melt distance, and more efficiently improve three-phase ice-melt speed, it is directed to that different voltages grade is defeated, distribution line ice-melt effect is guaranteed, operation is simple, security risk is low, it is applied widely, the assets investment of power grid enterprises is dramatically saved, therefore there is very strong practicability.
Description
Technical field
The utility model relates to electrical engineering technical field, more particularly, to based on ice-melt function power grid arragement construction and
System.
Background technique
Influence of the extreme weathers such as sleet, frost to power industry should not be underestimated, such as cannot timely process circuit after snow
Ice formation issues, tremendous influence will be caused to the power supply reliability of operation of power networks and user
In recent years, ice-melt and generator alternating current ice-melt rehearsal were exchanged for several times by the decompression short circuit of network transformer, used
Although this method, which carries out ice-melt, theoretically has certain Feasible degree, the distribution transforming decompression short circuit exchange ice-melt of the prior art
There are still following disadvantages for method:
(1) ice-melt voltage only has 400V, is LGJ70--95 calculating by common shoe ice area conductor, can only 1.3 public affairs of ice-melt
In left and right, but it is practical carry out ice formation domain it is most common at 2-5 kilometer or so, ice-melt distance is too short, to be segmented progress step by step, time-consuming
Long, speed is slow；
(2) operating worker large labor intensity, working efficiency is low, and there is icing at scene, and operating environment is poor, operation safety wind
Danger is big.
In conclusion lacking a kind of efficient ice-melt means, in the prior art to meet the electricity under the extreme weathers such as ice damage
Power supplies emergency demand.
Utility model content
In view of this, leading to the purpose of this utility model is to provide power grid arragement construction and system based on ice-melt function
It crosses parallel running and mode that phase-deficient operation matches, efficiently solves the problems, such as the ice-melt under the extreme weathers such as ice damage, compare three
For phase direct short-circuit ice-melt, the utility model more efficiently extends ice-melt distance, improves three-phase ice-melt speed, has
Very strong practicability.
In a first aspect, the utility model embodiment provides the power grid arragement construction based on ice-melt function, including transformer
Non- ice-melt side three-phase line and the transformer ice-melt side three-phase line；
To the ice-melt side three-phase line of the transformer by way of converting in turn, by the two-phase in three-phase line
Carry out respectively it is in parallel two-by-two, it is in parallel after two-phase and non-phase composition operating loop in parallel, to reach extension ice-melt distance and promotion
The effect of ice-melt speed.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the non-ice-melt side three-phase line of the transformer includes that A phase non-ice-melt side line road, B phase non-ice-melt side line road and C phase are non-
Ice-melt side line road.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, the ice-melt side three-phase line of the transformer includes A phase ice-melt side line road, B phase ice-melt side line road and C phase ice-melt side line
Road.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein in the case of carrying out ice-melt to the A phase ice-melt side line road, the B phase ice-melt in parallel
Side line road and C phase ice-melt side line road.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Four kinds of possible embodiments, wherein in the case of carrying out ice-melt to the B phase ice-melt side line road, the A phase ice-melt in parallel
Side line road and C phase ice-melt side line road.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Five kinds of possible embodiments, wherein in the case of carrying out ice-melt to the C phase ice-melt side line road, the A phase ice-melt in parallel
Side line road and B phase ice-melt side line road.
The third possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Six kinds of possible embodiments, wherein further include:
When the A phase ice-melt side line ice-melting, the B phase line phase-deficient operation of the transformer.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Seven kinds of possible embodiments, wherein further include:
When the B phase ice-melt side line ice-melting, the A phase line phase-deficient operation of the transformer.
The 5th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Eight kinds of possible embodiments, wherein further include:
When the C phase ice-melt side line ice-melting, the B phase line phase-deficient operation of the transformer.
Second aspect, the utility model embodiment provide the power grid arrangement system based on ice-melt function, including institute as above
The power grid arragement construction based on ice-melt function stated, further includes:
A phase ice-melt side line road, B phase ice-melt side line road and the C phase ice-melt side line road of transformer in turn converting parallel to be promoted
Three-phase ice-melt speed.
The utility model provides power grid arragement construction and system based on ice-melt function, including the non-ice-melt side three of transformer
Phase line and transformer ice-melt side three-phase line；To transformer ice-melt side three-phase line by way of converting in turn, by three-phase
Two-phase in route carry out respectively it is in parallel two-by-two, it is in parallel after two-phase and non-phase composition operating loop in parallel, hindered with reducing circuit
It is anti-, achieve the effect that extend ice-melt distance and promotes ice-melt speed.The utility model is matched by parallel running and phase-deficient operation
The mode of conjunction efficiently solves the problems, such as the ice-melt under the extreme weathers such as ice damage, and compared to for three-phase direct short-circuit ice-melt, this is practical
It is novel more efficiently to extend ice-melt distance, three-phase ice-melt speed is improved, there is very strong practicability.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the wiring construction schematic diagram under transformer normal operating condition provided by the embodiment of the utility model；
Fig. 2 is the wiring topology structural schematic diagram in the case of A phase ice-melt provided by the embodiment of the utility model；
Fig. 3 is the wiring topology structural schematic diagram in the case of B phase ice-melt provided by the embodiment of the utility model；
Fig. 4 is the wiring topology structural schematic diagram in the case of C phase ice-melt provided by the embodiment of the utility model；
Fig. 5 is step-down transformer DC ice-melting circuit diagram provided by the embodiment of the utility model；
Fig. 6 is positive ice-melt provided by the embodiment of the utility model and reversed ice-melt schematic diagram；
Fig. 7 is Transformer Phase-deficient Operation impedance loop schematic diagram provided by the embodiment of the utility model；
Fig. 8 is the impedance loop schematic diagram of three-phase direct short-circuit ice-melt provided by the embodiment of the utility model.
Icon:
The non-ice-melt side three-phase line of 100-；200- ice-melt side three-phase line.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
Currently, influence of the extreme weathers such as sleet, frost to power industry should not be underestimated, cannot such as be handled in time after snow
The ice formation issues of route will cause tremendous influence to the power supply reliability of operation of power networks and user.
Snow disaster in 2008 leaves deep impression to people, and southern china most area and East of Northwest China go out
Showed it is rare since the establishment of the nation continue large-scale low temperature, sleet and the extreme weather of frost, cause extremely serious ice and snow calamity
Evil, ice disaster have resulted in Guizhou Province, Hunan, Hubei Province, Anhui, Soviet Union, Shan, sweet etc. 17 provinces (municipality directly under the Central Government, autonomous region) disaster-stricken, calamity in various degree
The people cross hundred million.
By taking somewhere as an example, the 500kV substation influenced by disaster has 15 whole stations to have a power failure, and accounts for devastated 500kV power transformation
Stand the 7.54% of total seat number；220kV substation has 86 whole stations to have a power failure, and accounts for the total seat number of devastated 220kV substation
5.97%.500kV power circuit 119 stopped transport are influenced by disaster, account for the 19.01% of devastated 500kV route total number；
343,220kV route stopped transport are influenced by disaster, account for the 9.38% of devastated 220kV route total number.Freezing rain and snow disaster
500kV shaft tower is caused to fall 678 base of tower, impaired 295 bases, tower and impaired tower account for about the total radix of devastated 500kV shaft tower
0.742%；220kV shaft tower caused by ice damage falls 1432 base of tower, impaired 586 bases, and tower and impaired tower account for about devastated 220kV
The 0.697% of the total radix of shaft tower.
During snow disaster, the temperature of southern most area all at ± 3 DEG C or so, easily makes grid equipment under these conditions
Generate freezing phenomena.Sleet is attached to grid equipment surface and constantly forms icing, across covering in the transmission line of electricity in mountain area, tower bar
Ice phenomenon is particularly acute, Central China, East China some areas transmission line of electricity there is the icing of 40~60mm thickness, when freezing serious,
Ice covering thickness is increased by 1mm per hour.And according to the erection specification of China's transmission line of electricity, the route of voltage levels is by 30 years
One natural calamity met is come (in view of the economizing on resources and the factors such as reasonable electricity price) set up defences, the gas of 30 years one sleet and snow ices met
Time be guide line set up defences icing standard no more than 10mm.That is, being difficult to keep out by the transmission line of electricity that standard designs
The icing of 60mm thickness.It is very huge to the lateral pull of wire pole tower after sewing on electric wire has expired heavy ice slush, especially exist
In the case where there is strong wind, significantly waving occur in many conducting wires, and " resonance " effect is enough to forget about it tens tons of the steel of weighing
Pylon exacerbates the destruction to power transmission and transforming equipment.In addition, dielectric level is greatly reduced, much after generating icing on transmission facility
Equipment generates " ice sudden strain of a muscle " electric discharge phenomena, and large number of equipment especially gos up in temperature because of fault trip, the process that transmission line icing is melted
In, line flashover accident easily occurs, electric power netting safe running and reliable power supply will be caused to seriously threaten.
In recent years, the rehearsal of many kinds of measures such as up-flow ice-melt was played for several times by Vehicular direct-current, ac short circuit ice-melt, generator zero
It was verified that Vehicular direct-current de-icing failure rate is higher, investment is big, it is heavy it is inconvenient carry, use is less；Ice-melt transformation
Device is more flexible, easy to carry, but field operation amount is more, and security risk is big；Generator heavy inconvenience as Vehicular direct-current is removed
Fortune.Although carrying out ice-melt using these methods theoretically has certain Feasible degree, the distribution transforming of the prior art is depressured short circuit
Exchange de-icing method cannot still reach satisfactory ice-melt effect.In recent years the distribution transforming exchange ice-melt carried out, substantially can be right
Icing route carries out ice-melt, but because ice-melt voltage only has 400V, and direct short-circuit three-phase ice-melt, once can only be 1.3 kilometers of ice-melt
Left and right, but it is practical carry out ice formation domain it is most common in 2-5KM or so, ice-melt distance is too short, to be segmented progresss step by step, time-consuming
Long, speed is slow, and large labor intensity, working efficiency is low, and there is icing at scene, and operating environment is poor, and operation safety risk is big.
In conclusion lacking a kind of efficient ice-melt means, in the prior art to meet the electricity under the extreme weathers such as ice damage
Power supplies emergency demand.Based on this, the power grid arragement construction and system provided by the embodiment of the utility model based on ice-melt function,
It can efficiently solve the problems, such as the ice-melt under the extreme weathers such as ice damage, by A, B, C three-phase converting parallel in turn, efficiently extend
Ice-melt distance, and ice-melt speed is efficiently promoted on this basis.
For convenient for understanding the present embodiment, first to disclosed in the utility model embodiment based on ice-melt function
Power grid arragement construction describes in detail.
Embodiment one:
In the utility model embodiment, the non-ice-melt side voltage of transformer is to provide the voltage of ice-melt power supply, and ice-melt side mentions
For ice-melt voltage, here, the ice-melt voltage that ice-melt distance is ice-melt side is influenced.But it should be recognized that non-ice-melt side is practical
On only represent the input side of electric energy, ice-melt side is that the outlet side of power supply in practical applications also can be using non-ice-melt side as ice-melt
Side, can also be by ice-melt side carried out by ice-melt side, i.e. the ice-melt side primary side that may be either transformer can also be the secondary side of transformer,
For the convenience stated and understood, the utility model embodiment carries out ice-melt as one end of output ice-melt voltage using ice-melt side.
Power grid arragement construction based on ice-melt function includes non-ice-melt side three-phase line and the ice-melt of transformer of transformer
Side three-phase line；
To the ice-melt side three-phase line of transformer by way of converting in turn, the two-phase in three-phase line is carried out respectively
It is in parallel two-by-two, it is in parallel after two-phase and other phase composition operating loop, to reduce impedance loop, reach extend ice-melt distance and
Promote the effect of ice-melt speed.
Specifically, the utility model embodiment is put forward for the first time Transformer Phase-deficient Operation ice-melting mode, is put forward for the first time route and leads
Line parallel connection de-icing technology.Two sides are had the technical effect that caused by de-icing technology provided by the embodiment of the utility model
Face, one extend ice-melt distance, secondly improving ice-melt speed.Firstly, in ice-melt apart from aspect, mainly by DC ice-melting
Three-phase conducting wire wherein two be in parallel, then with non-phase composition circuit in parallel, Transformer Phase-deficient Operation, non-parallel connection phase conductor ice-melt temperature
It rises fast.If ice-melt three-phase line impedance is R, then parallel conducting wire impedance is 0.5R, then forms circuit with non-in parallel be connected in series, then
Circuit total impedance is 1.5R, and (referring to Fig. 7) if three-phase direct short-circuit ice-melt, the same circuit impedance is 2R, and total loop impedance is
√ 3R (referring to Fig. 8) reduces 1.33 times of impedance compared to parallel conducting wire ice-melt, and ice-melt distance is inversely proportional with conductor impedance, i.e. phase
Than extending 1.33 times in three-phase direct short-circuit ice-melt distance；Secondly, A, B, C three-phase are converted simultaneously in turn in terms of ice-melt speed
Connection, such as: when melting A phase, BC two is in parallel also while melting, and when switching to melt B phase, AC two is in parallel also while melting, and so on,
It ensure that the symmetry of ice-melt, and effectively improve ice-melt speed, therefore three-phase ice-melt on the basis of extending ice-melt distance
Speed is promoted.
It should be noted that being separated by preset time after carrying out simultaneously tie and being converted in turn simultaneously to A, B, C three-phase
Connection, thus lift three-phase ice-melt speed.Here specific preset time will be according to local actual conditions, thickness, the power grid of ice
The factors such as voltage class determine that but overall plan is compared with prior art, not by the constraint of environment, the change of all kinds of difference factors
Change the technical effect that will not influence the utility model embodiment, is obviously improved in terms of ice-melt distance, ice-melt speed.
It is as shown in Figure 1 the transformer connection layout circuit figure under normal operating condition.
Exemplary embodiment according to the present utility model, the non-ice-melt side three-phase line 100 of transformer include the non-ice-melt of A phase
Side line road, B phase non-ice-melt side line road and C phase non-ice-melt side line road.
Exemplary embodiment according to the present utility model, the ice-melt side three-phase line 200 of transformer include A phase ice-melt side line
Road, B phase ice-melt side line road and C phase ice-melt side line road.
Exemplary embodiment according to the present utility model, referring to Fig. 2, in the situation for carrying out ice-melt to A phase ice-melt side line road
Under, B phase ice-melt side line road in parallel and C phase ice-melt side line road.
Specifically, in A phase ice-melt, B phase conductor and the C phase conductor (B phase phase shortage) of transformer ice-melt side are connected in parallel, with
A phase composition single phase ac ice-melt.
Exemplary embodiment according to the present utility model, referring to Fig. 3, in the situation for carrying out ice-melt to B phase ice-melt side line road
Under, A phase ice-melt side line road in parallel and C phase ice-melt side line road.
Specifically, in B phase ice-melt, A phase conductor and the C phase conductor (A phase phase shortage) of transformer ice-melt side are connected in parallel, with
B phase composition single phase ac ice-melt.
Exemplary embodiment according to the present utility model, referring to Fig. 4, in the situation for carrying out ice-melt to C phase ice-melt side line road
Under, A phase ice-melt side line road in parallel and B phase ice-melt side line road.
Specifically, in C phase ice-melt, A phase conductor and the B phase conductor (B phase phase shortage) of transformer ice-melt side are connected in parallel, with
C phase composition single phase ac ice-melt.
Power grid ice-melt wiring topology provided by the embodiment of the utility model decouples stock, by by the three-phase conducting wire of DC ice-melting
Wherein two be in parallel with non-phase composition circuit in parallel, be connected to the two-phase of transformer ice-melt side, make its phase-deficient operation, parallel conducting wire can
Impedance is reduced, to extend ice-melt distance, it should be noted that the technical solution that this implementation new embodiment provides not only is applicable in
In power distribution network, can be applied in the transmission line of electricity of any voltage class, using the technical solution ice-melt of the utility model embodiment
Distance is positively correlated with the ice-melt voltage swing for being applied to route, and the higher ice-melt distance of ice-melt voltage for being applied to route is longer.
Exemplary embodiment according to the present utility model, further includes:
As shown in Fig. 2, when A phase ice-melt side line ice-melting, the B phase line phase-deficient operation of transformer.
Exemplary embodiment according to the present utility model, further includes:
As shown in figure 3, when B phase ice-melt side line ice-melting, the A phase line phase-deficient operation of transformer.
Exemplary embodiment according to the present utility model, further includes:
As shown in figure 4, when C phase ice-melt side line ice-melting, the B phase line phase-deficient operation of transformer.
The utility model embodiment provides the power grid arragement construction based on ice-melt function, the non-ice-melt side including transformer
The ice-melt side three-phase line of three-phase line and transformer；To the ice-melt side three-phase line of transformer by way of converting in turn,
Two-phase in three-phase line is carried out respectively it is in parallel two-by-two, it is in parallel after two-phase and non-phase composition operating loop in parallel, with extension
The ice-melt distance of route.The utility model not only extends ice-melt distance, and improves three-phase ice-melt speed, ice-melt distance and change
Depressor is applied to the voltage levels in DC ice-melting and is positively correlated, and is directed to that different voltages grade is defeated, ice-melt of distribution line effect
Fruit is guaranteed, and operation is simple, and security risk is low, applied widely, and environment influences less, to dramatically save power grid enterprises
Assets investment, therefore have very strong practicability.
Embodiment two:
Referring to Figure 5, using 10kv/0.4kv distribution transforming as ice-melt transformer, 0.4kv is ice-melt voltage, and ice-melt conducting wire is
LGJ-70, conductor impedance are 0.587 Ω/km, capacity of distribution transform 200KVA, three-phase direct short-circuit ice-melt at full capacity, ice-melt distance
For 1.36km, principle is as shown in Figure 8.
Power grid arrangement system of the utility model based on ice-melt function includes the power grid as described above based on ice-melt function
Arragement construction, further includes:
Converting parallel reduces back in turn on A phase ice-melt side line road, B phase ice-melt side line road and the C phase ice-melt side line road of transformer
Road total impedance, with 1.33 times of ice-melt distance of extension lead, ice-melt distance extends to 1.8km by original 1.36km, and principle is such as
Shown in Fig. 7.It should be noted that being directed to different conductor impedances, ice-melt distance is also not quite similar, and for details, reference can be made to tables 1.
Table 1 is matched with 200KVA becomes the more various conducting wire ice-melt distances of ice-melt transformer ratio
In terms of ice-melt speed, A, B, C three-phase converting parallel in turn, such as: when melting A phase, BC two is in parallel also while melting,
When switching to melt B phase, AC two, which is in parallel, also while to be melted, and so on, ensure that the symmetry of ice-melt, and extend ice-melt away from
Ice-melt speed is effectively improved from the basis of, therefore three-phase ice-melt speed is promoted.
Fig. 6 shows positive ice-melt and reversed ice-melt schematic diagram.If ice-melt distribution transforming is ring network power supply, that is, there is bi-directional power
Power supply.Positive ice-melt just uses parallel conducting wire de-icing technology as with figure 5, is that LGJ-70 calculating can melt 1.8km with conducting wire, reversely
Ice-melt, that is, ice-melt position resolver is constant, and for relatively positive ice-melt, ice-melt transformer high-low-voltage side is reversely connected, reversed to electricity
Source carries out reversed ice-melt, and as forward direction, forward and reverse superposition can extend 2 times of ice-melt distance, then be superimposed and lead for ice-melt effect and distance
Line parallel connection de-icing technology can extend 2.66 times of ice-melt distance, and for details, reference can be made to tables 1.
The utility model has the advantages that:
(1) extend ice-melt distance: the utility model significantly extends in such a way that in parallel and phase-deficient operation combines
The ice-melt distance of non-parallel connection phase, and ensure that by way of converting in turn the symmetrical ice-melt of three-phase, ice-melt significant effect mentions
It rises.
(2) improve ice-melt speed: the non-phase in parallel of the utility model is while being obviously improved ice-melt effect, actually
The route of phase in parallel is also carrying out ice-melt simultaneously, therefore saves the ice-melt time, improves ice-melt speed.
(3) workload is small, and security risk is low: the workload of the utility model compared with the prior art significantly reduces, and utilizes
The electric energy of the non-ice-melt side of transformer and the wiring construction of ice-melt side can carry out ice-melt operation, and security risk reduces.
(4) small investment has wide range of applications: ice-melt scheme is simple and easy, without additionally adding excessive power equipment, throws
Money is more saved compared with the prior art, saves the investment in fixed assets of power grid enterprises；Also, for transmission line of electricity and distribution
Route is applicable in, and application range is extremely extensive.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of power grid arragement construction based on ice-melt function, which is characterized in that the non-ice-melt side three-phase line including transformer
With the ice-melt side three-phase line of the transformer；
To the ice-melt side three-phase line of the transformer by way of converting in turn, the two-phase in three-phase line is distinguished
Parallel connection two-by-two is carried out, the two-phase after parallel connection reaches with non-phase composition operating loop in parallel extends ice-melt distance and promotion ice-melt speed
The effect of degree.
2. the power grid arragement construction according to claim 1 based on ice-melt function, which is characterized in that the institute of the transformer
Stating non-ice-melt side three-phase line includes A phase non-ice-melt side line road, B phase non-ice-melt side line road and C phase non-ice-melt side line road.
3. the power grid arragement construction according to claim 1 based on ice-melt function, which is characterized in that the institute of the transformer
Stating ice-melt side three-phase line includes A phase ice-melt side line road, B phase ice-melt side line road and C phase ice-melt side line road, and deicing processes include master
Ice-melt and auxiliary ice-melt.
4. the power grid arragement construction according to claim 3 based on ice-melt function, which is characterized in that melt to the A phase
In the case of ice side line road carries out the main ice-melt, the B phase ice-melt side line road and C phase ice-melt side line road in parallel are with simultaneously
Carry out the auxiliary ice-melt.
5. the power grid arragement construction according to claim 3 based on ice-melt function, which is characterized in that melt to the B phase
In the case of ice side line road carries out the main ice-melt, the A phase ice-melt side line road and C phase ice-melt side line road in parallel are with simultaneously
Carry out the auxiliary ice-melt.
6. the power grid arragement construction according to claim 3 based on ice-melt function, which is characterized in that melt to the C phase
In the case of ice side line road carries out the main ice-melt, the A phase ice-melt side line road and B phase ice-melt side line road in parallel are with simultaneously
Carry out the auxiliary ice-melt.
7. the power grid arragement construction according to claim 4 based on ice-melt function, which is characterized in that further include:
When the A phase ice-melt side line ice-melting, the B phase ice-melt side line road phase-deficient operation of the transformer.
8. the power grid arragement construction according to claim 5 based on ice-melt function, which is characterized in that further include:
When the B phase ice-melt side line ice-melting, the A phase ice-melt side line road phase-deficient operation of the transformer.
9. the power grid arragement construction according to claim 6 based on ice-melt function, which is characterized in that further include:
When the C phase ice-melt side line ice-melting, the B phase ice-melt side line road phase-deficient operation of the transformer.
10. a kind of power grid arrangement system based on ice-melt function, which is characterized in that appoint including such as claim 1 to claim 9
Based on the power grid arragement construction of ice-melt function described in one, further includes:
A phase ice-melt side line road, B phase ice-melt side line road and the C phase ice-melt side line road of transformer carry out ice-melt operation in turn.
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| CN108808608A (en) * | 2018-07-03 | 2018-11-13 | 广东电网有限责任公司 | Power grid arrangement and system based on ice-melt function |
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