CN201178282Y - Loaded operating ice melting system for high-voltage power transmission line - Google Patents
Loaded operating ice melting system for high-voltage power transmission line Download PDFInfo
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- CN201178282Y CN201178282Y CNU2008200465189U CN200820046518U CN201178282Y CN 201178282 Y CN201178282 Y CN 201178282Y CN U2008200465189 U CNU2008200465189 U CN U2008200465189U CN 200820046518 U CN200820046518 U CN 200820046518U CN 201178282 Y CN201178282 Y CN 201178282Y
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Abstract
The utility model provides a high-voltage transmission line ice-melting system operating on load. The ice-melting system comprises at least two transmission wires, wherein at least three mounting points are disposed on the transmission wire; and a connection point is led out of each transmission wire from each mounting point, and the connection points divide each transmission wire into a plurality of sub-sections; and at least two current dividers and at least one ice-melting power supply device, wherein terminals with the quantity being equal to that of the transmission wires are disposed on both the current dividers and the ice-melting power supply device which are alternately disposed on each mounting point and allow the terminals thereof to be connected with the connection points on the transmission wires. Two sub-sections between two adjacent mounting points, the current dividers and the ice-melting power supply device form a local ice-melting loop, the ice-melting power supply device is used for connecting the two sub-sections in the loop and providing a loop current for the loop, and a switch for gating the sub-sections and a current limiter for preventing the loading current of the transmission wires from entering the loop are connected in series in the loop.
Description
Technical field
The utility model relates in high voltage power transmisson system, a kind of ice melting system that is applied to high tension power line with load operation.
Background technology
In high voltage power transmisson system, the long distance of transmission line is set up, and passes through a plurality of meteorologic districts, under the severe cold adverse weather condition, is easy to cause ultra-high-tension power transmission line icing accident, causes transmission of electricity to interrupt, and enterprise and society are sustained a great loss.
In existing anti-icing and ice-melt scheme, the excess current de-icing technology is arranged, short circuit de-icing technology, the anti-icing and de-icing technology of heat-resisting alloy lead etc.In the anti-icing and de-icing technology of heat-resisting alloy lead, be to utilize lead to run on the characteristic of higher temperature, ice-melt and the prevention circuit of using it for the high voltage power transmisson system circuit freeze, but shortcoming is that the lead long-time running is in the high-temperature region, thermal losses is bigger, and is uneconomical economically.In the line short de-icing technology, if be not with load, transmission of electricity is interrupted; If band load, short circuit current causes very big impact to electrical network.And in the existing excess current de-icing technology, no matter whether being with load, its scheme all is road completely, thermal losses is also bigger.In addition, when the homophase of transmission system or homopolarity adopt the single conductor transmission of electricity, or when adopting the bundle conductor transmission of electricity, adopt existing excess current de-icing technology, do not reach the ice-melt of circuit band load operation.
Be in the Chinese utility model patent of CN 200944519Y for example at publication number, disclosed a kind of transmission line automatic deicing apparatus, mainly be that a cut-off point is set on every transmission pressure, current changeover switch of series connection on cut-off point, when the needs ice-melt, making a current in wire by current changeover switch is zero, and an other current in wire increases and is twice.This utility model patent adopts the overcurrent technology to realize melting of ice cube, but all fronts road all is in the overcurrent phenomenon in the deicing processes, and thermal losses is very big.
If in transmission system, have when wire icing takes place, can be under the situation that does not influence circuit band load operation, the lead in icing zone is applied an extra additional electric current, implement excess current de-icing scheme among a small circle, then solved the ice-melt difficult problem of circuit band load operation, low thermal losses.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of ice melting system of high tension power line with load operation, thereby this system can make the ground, electric current subregion of transmission pressure increase heating, realizes low thermal losses ice-melt.
The technical solution of the utility model is as follows: a kind of ice melting system of high tension power line with load operation, transmission line comprises at least two transmission pressures, adopt direct current or ac transmission, it is characterized in that: described transmission line is provided with the mounting points more than three or three, draw a contact at each mounting points place from each transmission pressure, contact is divided into the plurality of sub section with transmission pressure; Also comprise at least two shunts and at least one ice-melt supply unit, shunt and ice-melt supply unit are equipped with the terminal that quantitatively equates with transmission pressure bar number; Described shunt and ice-melt supply unit are arranged alternately on each mounting points of transmission line, and its terminal is connected one by one with contact on the transmission pressure; The two strip sections that belong to different transmission pressures respectively and shunt, ice-melt supply unit between adjacent two mounting points of transmission line constitute regional ice-melt loop, shunt is used for two strip sections of connected loop, the ice-melt supply unit is used for two strip sections of connected loop, and provide a loop current to the loop, and also be in series with the switch that is used for gating section on the loop and stop the transmission pressure load current to feed the flow plug in this loop.
Preferably, the distance on the described transmission line between adjacent two mounting points equates, offers the electric current of loop neutron section lead with balanced ice-melt supply unit.
Described transmission line comprises the three-phase alternating current transmission pressure, and every single conductor that adopts mutually transmits; The ice-melt power supply adopts DC power supply in the described ice-melt supply unit; Described flow plug is a reactor; Described switch comprises the diverting switch that is connected on the shunt terminal and is connected on the mains switch of ice-melt supply unit terminal.Wherein flow plug can be arranged in the ice-melt supply unit, or is arranged in the shunt, or is located at simultaneously in ice-melt supply unit and the shunt.
Described transmission line comprises the three-phase alternating current transmission pressure, and every bundle conductor that adopts mutually transmits; The ice-melt power supply adopts DC power supply in the described ice-melt supply unit; Described flow plug is a reactor; Described switch is the mains switch that is connected on ice-melt supply unit terminal; Described shunt couples together the contact of homophase bundle conductor in same mounting points respectively.When the shunt of the technical program is connected with homophase bundle conductor contact, not tandem tap and flow plug, thus simplified the connection transformation of transmission pressure.
Described transmission line comprises one pole or the two poles of the earth direct current transportation lead, and every utmost point adopts the single conductor transmission; The ice-melt power supply adopts AC power in the described ice-melt supply unit; Described flow plug is a capacitor; Described switch comprises the diverting switch that is connected on the shunt terminal and is connected on the mains switch of ice-melt supply unit terminal.Wherein flow plug can be arranged in the ice-melt supply unit, or is arranged in the shunt, or is located at simultaneously in ice-melt supply unit and the shunt.
Described transmission line comprises one pole or the two poles of the earth direct current transportation lead, and every utmost point adopts the bundle conductor transmission; The ice-melt power supply adopts AC power in the described ice-melt supply unit; Described flow plug is a capacitor; Described switch is the mains switch that is connected on ice-melt supply unit terminal; Described shunt couples together the contact of homopolarity bundle conductor in same mounting points respectively.When the shunt of the technical program is connected with homopolarity bundle conductor contact, not tandem tap and flow plug, thus simplified the connection transformation of transmission pressure.
Because a plurality of ice-melt supply units and shunt have been installed on transmission line, in when, on a certain section circuit wire icing taking place when, by controlling the on off operating mode of this zone ice-melt circuit switching, thereby the electric current of the two son sections that belong to different transmission pressures in this zone is increased, realize the subregion excess current de-icing.And the flow plug of connecting in the loop can stop the load current of high voltage electricity transmission conductive wire to enter in the loop: when high voltage power transmisson system adopts the three-phase alternating current transmission of electricity, then adopt reactor as flow plug, and the ice-melt supply unit adopts DC power supply, thereby make regional ice-melt loop form a DC loop, as long as the parameter of reactor reasonably is set, just can produce very big inhibition to the interchange load current of transmission line, the electric current of reactor of flowing through can be ignored, and the interchange load current that just can intercept transmission line enters regional ice-melt loop; When high voltage power transmisson system adopts the two poles of the earth direct current transportation, then adopt capacitor as flow plug, and the ice-melt supply unit adopts AC power, thereby make regional ice-melt loop form an ac circuit, as long as the parameter of high-voltage capacitor reasonably is set, the direct current load current that just can intercept transmission line enters regional ice-melt loop.Thereby, the loop current sum that the sub-section lead electric current in the above-mentioned ice-melt zone provides for the load current and the ice-melt supply unit of transmission line, sub-section lead electric current obviously increases also heating.Group section lead total current is during more than or equal to the icing electric current of this lead under this transmission of electricity environment, and this sub-section lead has just been realized ice-melt.And by the switch transition in the loop, the loop that other any two strip section leads in ice-melt supply unit, shunt and the icing zone can be formed a zonule, as stated above this loop is applied a loop current, then this two strips section lead has also been realized ice-melt.After ice-melt was once carried out in all lead circulations, all leads of whole transmission system had just been realized ice-melt.Because excess current de-icing is only implemented in the icing zone, its thermal losses is dropped to minimum, thereby transmission line is able to realize the purpose of low thermal losses ice-melt on the basis of run with load.
Description of drawings
Fig. 1 is in high-voltage alternating list center line, the every phase single conductor transmission system, structural representation of the present utility model;
Fig. 2 does not have in center line, the every phase single conductor transmission system structural representation of the present utility model for high-voltage alternating;
Fig. 3 is in high-voltage alternating 2 center lines, the every phase 2 bundle conductor transmission systems, structural representation of the present utility model;
Fig. 4 is in high-voltage alternating 2 center lines, the every phase 4 bundle conductor transmission systems, structural representation of the present utility model;
Fig. 5 is in high voltage direct current 2 center lines, the every utmost point 4 bundle conductor transmission systems, structural representation of the present utility model;
Fig. 6 is in high voltage direct current 2 center lines, the every utmost point 6 bundle conductor transmission systems, structural representation of the present utility model.
Reference numeral: L
A～L
CBe transmission pressure, L
A1～L
A4, L
B1～L
B4, L
C1～L
C4, L
+ 1～L
+ 6, L
-1～L
-6Be bundle conductor, L
OAnd L
O1～L
O2Be center line and division center line; 1,2,3,4,5 is mounting points, a
1～a
5, b
1～b
5, c
1～c
5, o
1～o
5, a
11～a
13, a
21～a
23, a
31～a
33, a
41～a
43, b
11～b
13, b
21～b
23, b
31～b
33, b
41～b
43, c
11～c
13, c
21～c
23, c
31～c
33, c
41～c
43, o
11～o
13, o
21～o
23,+
11～+
13,+
21～+
23,+
31～+
33,+
41～+
43,+
51～+
53,+
61～+
63,-
11～-
13,-
21～-
23,-
31～-
33,-
41～-
43,-
51～-
53,-
61～-
63Be wire joining, T
A1～T
A5, T
B1～T
B5, T
C1～T
C5, T
O1～T
O5, T
B11～T
B31, T
B12～T
B32, T
+ 1～T
+ 6, T
-1～T
-6Be switch, R
1～R
5Be flow plug, E
1～E
2Be ice-melt power supply, F
1～F
3Be shunt, D
1～D
2Be ice-melt supply unit, I
CarryBe payload electric current, I
ReturnBe effective loop current, I
MeltBe effective ice melting current.
Embodiment
Below in conjunction with accompanying drawing, adopt to exchange or direct current transportation according to the practical application middle and high voltage transmission system, with and transmission pressure can have the division center line and the bundle conductor of varying number, the utility model is described in further detail:
Embodiment 1:
As shown in Figure 1, in the present embodiment, high voltage power transmisson system is high-voltage alternating list center line, the transmission of electricity of every phase single conductor; Be equipped with switch and flow plug in shunt and the ice-melt supply unit.
Each phase conductor L of traditional high-voltage AC transmission system
A, L
B, L
CWith center line L
OThe centre does not have lead to connect, during transmission of electricity, and lead L
A, L
B, L
CSeparately in the down operation of safe load electric current, when on the circuit during a certain section lead generation icing, because current in wire is the safe load electric current, the ice melting current when needing ice-melt, such line design can't reach the lead ice-melt.
Present embodiment comprises each phase conductor L
A, L
B, L
CWith center line L
OTotally 4 leads.In the multiple district of icing along the line, also, at first center line and ground wire are disconnected, connect into a lead before and after the center line simultaneously for the ice-melt of center line, so that composition loop, because in the winter of cold, no thunderstorm weather disconnects the unlikely thunder and lightning bombardment problem that occurs being subjected to center line and ground wire, treat after winter, thunderstorm weather when circuit no longer needs ice-melt, engages center line before arriving again with ground wire.Supplier of electricity in transmission system is distinguished to the icing pilosity along the line of electricity consumption side, at circuit every the about 50 kilometers places of a segment distance, on transmission line, establish a mounting points, draw a contact at each mounting points place from each transmission pressure, contact is divided into the plurality of sub section with transmission pressure, thereby the whole piece lead will be divided into some strip sections by a plurality of contacts on it.Shunt and ice-melt supply unit are arranged alternately on each mounting points of transmission line, and wherein shunt and ice-melt supply unit are provided with the terminal that quantitatively equates with transmission pressure bar number, and terminal is connected one by one with contact on the transmission pressure.Fig. 1 shows five mounting points 1,2,3,4 and 5, and the shunt and the ice-melt supply unit F that alternately are arranged on five mounting points
1, D
1, F
2, D
2And F
3At mounting points 1 place, the contact of each lead is a
1, b
1, c
1, o
1, the contact of other mounting points and the like.
At mounting points 2 places, its ice-melt supply unit D
1Middle ice-melt power supply E
1Be high-voltage DC power supply, flow plug R
2Be high voltage reactor, as long as R suitably is set
2Parameter, the interchange load current that just can intercept between transmission line is passed through.Between ice-melt power supply, the flow plug and with the annexation of transmission pressure be: ice-melt power supply E
1With flow plug R
2Be connected into series circuit, for simplifying track remodelling, with E
1And R
2Connect head and the tail two ends, back and draw ice-melt supply unit D by mains switch respectively
1Several terminals, each terminal is connected on the contact of each lead of same mounting points place more one by one.Be specially: ice-melt power supply E
1With flow plug R
2After the series connection, an end is received mains switch T respectively
A2, T
C2On the one termination terminal, mains switch T
A2, T
C2Be connected respectively to lead L on the other end binding post
A, L
CA
2, c
2On the contact; And the other end is received mains switch T respectively
B2, T
O2On the one termination terminal, mains switch T
B2, T
O2Be connected respectively to lead L on the other end binding post
BWith center line L
OB
2, o
2On the contact.According to said method, can ice-melt supply unit D be installed at mounting points 4 places
2
At mounting points 1 place, shunt F
1Middle flow plug R
1Be high voltage reactor, as long as R suitably is set
1Parameter, the interchange load current that just can intercept between transmission line is passed through.For simplifying track remodelling, with R
1Two ends are connected on the contact of each lead by diverting switch respectively.For this reason, flow plug R
1One end is received diverting switch T respectively
A1, T
C1On the one termination terminal, diverting switch T
A1, T
C1Be connected respectively to lead L on the other end binding post
A, L
CA
1, c
1On the contact, and flow plug R
1The other end is received diverting switch T respectively
B1, T
O1On the one termination terminal, diverting switch T
B1, T
O1Be connected respectively to lead L on the other end binding post
BWith center line L
OB
1, o
1On the contact.According to said method, can shunt F be installed at mounting points 3,5 places
3And F
5When transmission line normally moved, all switches all were in off-state.
The ice-melt principle of present embodiment is as follows:
In certain AC transmission system, designing every phase load current is 650 peaces, adopts 720mm
2Lead transmission of electricity.Through experiment, under certain transmission of electricity environment, the ice melting current of this transmission pressure is 1530 peaces, and the ice melting current of center line is 500 peaces.When at transmission line 1-3 section lead generation icing, at first with this regional diffluence device and ice-melt supply unit F
1, D
1, F
2Switch T
A1, T
B1, T
A2, T
B2, T
A3, T
B3Close, pass through L
A, L
BSub-section lead form two E
1-T
A2-a
2-a
1-T
A1-R
1-T
B1-b
1-b
2-T
B2-R
2-E
1And E
1-T
A2-a
2-a
3-T
A3-R
3-T
B3-b
3-b
2-T
B2-R
2-E
1Ice-melt loop, zonule.At this moment sub-section lead a
1-a
2, a
2-a
3And b
1-b
2, b
2-b
3Effective current is respectively conductor load alternating current I
CarryWith loop direct current I
ReturnSummation.As power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (1530-650)=1760 peace, the total effective current of promptly every sub-section lead is greater than ice melting current 1530 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead a
1-a
2, a
2-a
3And b
1-b
2, b
2-b
3Realized ice-melt.After ice-melt finishes, with above-mentioned switch T
A1, T
B1, T
A2, T
B2, T
A3, T
B3Disconnect.Then, again with switch T
C1, T
O2, T
C2, T
O2, T
C3, T
O3Close, pass through L
C, L
OSub-section lead form in addition two new E again
1-T
C2-c
2-c
1-T
C1-R
1-T
O1-o
1-o
2-T
O2-R
2-E
1And E
1-T
C2-c
2-c
3-T
C3-R
3-T
O3-o
3-o
2-T
O2-R
2-E
1Ice-melt loop, zonule.At this moment sub-section lead c
1-c
2, c
2-c
3Effective current is respectively conductor load alternating current I
CarryWith loop direct current I
ReturnSummation; Sub-section lead o
1-o
2, o
2-o
3Effective current is respectively loop direct current I
ReturnAs power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (1530-650)=1760 peace, promptly sub-section lead c
1-c
2, c
2-c
3Total effective current is greater than ice melting current 1530 ampere-hours of this lead under the environment of transmitting electricity at that time; Simultaneously, power supply E
1The electric current 2I that provides
Return=1760 peaces, promptly sub-section lead o
1-o
2, o
2-o
3Effective current is also greater than ice melting current 500 ampere-hours of this center line under the environment of transmitting electricity at that time, each sub-section lead c
1-c
2, c
2-c
3, o
1-o
2, o
2-o
3Realized ice-melt again.Like this, on each sub-section lead of 1-3, all realized ice-melt.After ice-melt finishes, again with switch T
C1, T
O1, T
C2, T
O2, T
C3, T
O3Disconnect.The loop direct current is zero, and lead flows through 650 peace electric currents separately, recovers normal operation power supply.
Embodiment 2:
As shown in Figure 2, in the present embodiment, high voltage power transmisson system is that high-voltage alternating does not have center line, the transmission of electricity of every phase single conductor; Be equipped with switch and flow plug in shunt and the ice-melt supply unit.
Present embodiment is similar to Example 1, the no center line that is not both, and transmission pressure has only L
A, L
B, L
CTotally 3 leads.Fig. 2 shows 3 mounting points 1,2 and 3, and the shunt and the ice-melt supply unit F that lay respectively at 3 mounting points
1, D
1And F
2, at mounting points 1 place, the contact of each lead is a
1, b
1, c
1, the contact of other mounting points and the like.The flow plug R in mounting points 1 place's shunt correspondingly
1Become with the annexation of transmission pressure: switch T
A1Be connected to lead L
AContact a
1, switch T
C1Be connected to lead L
CContact c
1, lead L
BContact b
1By two switch T
B11And T
B12Be connected to the flow plug R in the above-mentioned shunt
1Two ends.At mounting points 2 places, the ice-melt power supply E in the ice-melt supply unit
1With flow plug R
2With L
BThe annexation of transmission pressure is: ice-melt power supply E
1With flow plug R
2After the series connection, the head and the tail two ends are by switch T
A2Be connected to lead L
AContact a
2, switch T
C2Be connected to lead L
CContact c
2, lead L
BContact b
2By two switch T
B21And T
B22Be connected to above-mentioned ice-melt power supply E
1With flow plug R
2Two ends after the series connection.When transmission line normally moved, all switches all were in off-state.
The ice-melt principle of present embodiment is as follows:
In certain AC transmission system, designing every phase load current is 650 peaces, adopts 720mm
2Lead transmission of electricity.Through experiment, under certain transmission of electricity environment, the ice melting current of this transmission pressure is 1530 peaces.When at transmission line 1-3 section lead generation icing, at first with this regional diffluence device and ice-melt supply unit F
1, D
1, F
2Switch T
A1, T
B12, T
A2, T
B22, T
A3, T
B32Close, pass through L
A, L
BSub-section lead form two E
1-T
A2-a
2-a
1-T
A1-R
1-T
B12-b
1-b
2-T
B22-R
2-E
1And E
1-T
A2-a
2-a
3-T
A3-R
3-T
B32-b
3-b
2-T
B22-R
2-E
1Ice-melt loop, zonule.At this moment sub-section lead a
1-a
2, a
2-a
3And b
1-b
2, b
2-b
3Effective current is respectively conductor load alternating current I
CarryWith loop direct current I
ReturnSummation.As power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (1530-650)=1760 peace, the total effective current of promptly every sub-section lead is greater than ice melting current 1530 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead a
1-a
2, a
2-a
3And b
1-b
2, b
2-b
3Just begin ice-melt.Treat ice-melt after half, with above-mentioned switch T
A1, T
B12, T
A2, T
B22, T
A3, T
B32Disconnect, again with switch T
B11, T
C1, T
B21, T
C2, T
B31, T
C3Close, pass through L
B, L
CSub-section lead form new ice-melt loop, two zonules.In like manner, at this moment sub-section lead b
1-b
2, b
2-b
3And c
1-c
2, c
2-c
3Effective current is respectively greater than ice melting current 1530 peaces, beginning ice-melt.Group section lead b
1-b
2, b
2-b ice-melt finishes, sub-section lead c
1-c
2, c
2-c
3Ice-melt is after half, again with above-mentioned switch T
B11, T
B21, T
B31Disconnect, simultaneously again with switch T
A1, T
A2, T
A3Close, take turns to sub-section lead a
1-a
2, a
2-a
3And c
1-c
2, c
2-c
3The beginning ice-melt.Group section lead c
1-c
2, c
2-c
3After ice-melt finishes, sub-section lead a
1-a
2, a
2-a
3Remaining half also melted fully.Like this, on each sub-section lead of 1-3, all realized ice-melt.After ice-melt finishes, again with switch T
A1, T
A2, T
A3And T
C1, T
C2, T
C3Disconnect.The loop direct current is zero, and lead flows through 650 peace electric currents separately, recovers normal operation power supply.
Embodiment 3:
As shown in Figure 3, in the present embodiment, high voltage power transmisson system is high-voltage alternating 2 division center lines, the transmission of electricity of every phase 2 bundle conductors; Switch and flow plug only are set in the ice-melt supply unit.
Present embodiment is similar to Example 1, and different is that center line is 2 bundle conductor L
O1, L
O2, each is 2 bundle conductor L mutually
A1, L
A2, L
B1, L
B2, L
C1, L
C2Totally 8 leads; Center line is also pressed the method for embodiment 1 in advance, cuts off with ground wire earlier, and in order to simplify the structure of transmission line, switch and flow plug is not set in the shunt, but with connecting line the homophase at same mounting points place or the contact of center line bundle conductor are coupled together respectively.Fig. 3 shows 3 mounting points 1,2 and 3, in mounting points 1 and 3, respectively with 4 connecting lines with homophase and with in the contact of each two lead link together, its connecting line connects be homophase and same in two leads, so do not influence normal operation power supply state.In mounting points 2, two end switch in the ice-melt supply unit are connected respectively to lead L
A1～L
A2, L
B1～L
B2, L
C1～L
C2, L
O1～L
O2A
12, b
12, c
12, o
12And a
22, b
22, c
22, o
22On, the contact of other mounting points and the like.When transmission line normally moved, all switches all were in off-state.
The ice-melt principle of present embodiment is as follows:
In certain AC transmission system, designing every phase load current is 1300 peaces, adopts 2X720mm
2Lead transmission of electricity, promptly every current in wire is 650 peaces.Through experiment, under certain transmission of electricity environment, the ice melting current of this transmission pressure is 1530 peaces, and the ice melting current of center line is 500 peaces.When at transmission line 1-3 section lead generation icing, at first should zone ice-melt supply unit D
1Switch T
O1, T
O2Close, pass through L
O1, L
O2Sub-section lead form ice-melt loop, two zonules.At this moment sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Effective current is respectively loop direct current I
ReturnAs power supply E
1The electric current 2I that provides
Return＞2 * I
Melt=2 * 500=1000 peace, promptly every sub-section lead effective current is greater than ice melting current 500 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
O1, T
O2Disconnect.Then, again with switch T
A1, T
A2Close, pass through L
A1, L
A2Sub-section lead form loop, two zonules.At this moment sub-section lead a
11-a
12, a
12-a
13And a
21-a
22, a
22-a
2Effective current is respectively conductor load alternating current I
CarryWith loop direct current I
ReturnSummation.As power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (1530-650)=1760 peace, the total effective current of promptly every sub-section lead is greater than ice melting current 1530 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead a
11-a
12, a
12-a
13And a
21-a
22, a
22-a
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
A1, T
A2Disconnect.In like manner, also as stated above successively in turn with L
B1, L
B2And L
C1, L
C2Each son section is carried out ice-melt.Ice-melt disconnects all switches after finishing.The loop direct current is zero, and lead flows through 650 peace electric currents separately, recovers normal operation power supply.
Embodiment 4:
As shown in Figure 4, in the present embodiment, high voltage power transmisson system is high-voltage alternating 2 division center lines, the transmission of electricity of every phase 4 bundle conductors; Switch and flow plug only are set in the ice-melt supply unit.
Present embodiment is similar to Example 3, and different is that each is 4 bundle conductor L mutually
A1～L
A4, L
B1～L
B4, L
C1～L
C4Totally 14 leads.Fig. 4 shows 3 mounting points 1,2 and 3, in mounting points 1 and 3, correspondingly link together with the contact of 3 connecting lines respectively in the shunt 4 bundle conductors of homophase, respectively with 1 connecting line will with in the contact of 2 bundle conductors link together; In mounting points 2, two end switch in the ice-melt supply unit are connected respectively to lead L
A1～L
A4, L
B1～L
B4, L
C1～L
C4, L
O1～L
O2Contact a
12, a
32, b
12, b
32, c
12, c
32, o
12And a
22, a
42, b
22, b
42, c
22, c
42, o
22On, the contact of other mounting points and the like.When transmission line normally moved, all switches all were in off-state.
The ice-melt principle of present embodiment is as follows:
In certain AC transmission system, designing every phase load current is 1500 peaces, adopts 4X400mm
24 bundle conductors transmissions of electricity, promptly every current in wire is 375 peaces.Through experiment, under certain transmission of electricity environment, the ice melting current of this lead is 800 peaces, and the ice melting current of center line is 500 peaces.When at transmission line 1-3 section lead generation icing, at first should zone ice-melt supply unit D
1Switch T
O1, T
O2Close, pass through L
O1, L
O2Sub-section lead form loop, two zonules.At this moment sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Effective current is respectively loop direct current I
ReturnAs power supply E
1The electric current 2I that provides
Return＞2 * I
Melt=2 * 500=1000 peace, promptly every sub-section lead effective current is greater than ice melting current 500 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
O1, T
O21Disconnect.Then, again with switch T
A1, T
A2Close, pass through L
A1, L
A2Sub-section lead form loop, two zonules.At this moment sub-section lead a
11-a
12, a
12-a
13And a
21-a
22, a
22-a
23Effective current is respectively conductor load alternating current I
CarryWith loop direct current I
ReturnSummation.As power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (800-375)=850 peace, the total effective current of promptly every sub-section lead is greater than ice melting current 800 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead a
11-a
12, a
12-a
13And a
21-a
22, a
22-a
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
A1, T
A2Disconnect.In like manner, also as stated above successively in turn with L
A3And L
A4, L
B1～L
B4And L
C1～L
C4Each son section is carried out ice-melt.Ice-melt disconnects all switches after finishing.The loop direct current is zero, and lead flows through 375 peace electric currents separately, recovers normal operation power supply.
Embodiment 5:
As shown in Figure 5, in the present embodiment, high voltage power transmisson system is the two poles of the earth high voltage direct current 2 division center lines, the transmission of electricity of every utmost point 4 bundle conductors; Switch and flow plug only are set in the ice-melt supply unit.
Present embodiment is similar to Example 4, and different is, and high voltage power transmisson system is the transmissions of electricity of direct current the two poles of the earth, whenever 4 bundle conductor L very
+ 1～L
+ 4, L
-1～L
-4Totally 10 leads.Fig. 4 shows 3 mounting points 1,2 and 3, in mounting points 1 and 3, correspondingly links together with 4 bundle conductors of 2 connecting lines with homopolarity respectively in the shunt, links together with 2 bundle conductors of 1 connecting line with center line respectively; At mounting points 2 places, its ice-melt supply unit D correspondingly
1Middle ice-melt power supply E
1Be high-voltage ac power, flow plug R
1Be high-voltage capacitor, the direct current load current that high-voltage capacitor can intercept between transmission line is passed through; In mounting points 2, two end switch in the ice-melt supply unit are connected respectively to lead L
+ 1～L
+ 4, L
-1～L
-4, L
O1～L
O2Contact+
12,+
32,-
12,-
32, o
12With+
22,+
42,-
22,-
42, o
22On, the contact of other mounting points and the like.When transmission line normally moved, all switches all were in off-state.
The ice-melt principle of present embodiment is as follows:
In certain DC transmission system, designing every utmost point load current is 1500 peaces, adopts 4X400mm
24 bundle conductors transmissions of electricity, promptly every current in wire is 375 peaces.Through experiment, under certain transmission of electricity environment, the ice melting current of this lead is 800 peaces, and the ice melting current of center line is 500 peaces.When at transmission line 1-3 section lead generation icing, at first should zone ice-melt supply unit D
1Switch T
O1, T
O2Close, pass through L
O1, L
O2Sub-section lead form ice-melt loop, two zonules.At this moment sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Effective current is respectively loop alternating current I
ReturnAs power supply E
1The electric current 2I that provides
Return＞2 * I
Melt=2 * 500=1000 peace, promptly every sub-section lead effective current is greater than ice melting current 500 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead o
11-o
12, o
12-o
13And o
21-o
22, o
22-o
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
O1, T
O21Disconnect.Then, again with switch T
+ 1, T
+ 2Close, pass through L
+ 1, L
+ 2Sub-section lead form loop, two zonules.At this moment sub-section lead+
11-+
12,+
12-+
13With+
21-+
22,+
22-+
23Effective current is respectively conductor load direct current I
CarryWith loop alternating current I
ReturnSummation.As power supply E
1The electric current 2I that provides
Return＞2 * (I
Melt-I
Carry)=2 * (800-375)=850 peaces, the total effective current of promptly every sub-section lead be greater than ice melting current 800 ampere-hours of this lead under the environment of transmitting electricity at that time, each sub-section lead+
11-+
12,+
12-+
13With+
21-+
22,+
22-+
23Realized ice-melt, after ice-melt finishes, with above-mentioned switch T
+ 1, T
+ 2Disconnect.In like manner, also as stated above successively in turn with L
+ 3And L
+ 4, L
-1～L
-4Each son section is carried out ice-melt.Ice-melt disconnects all switches after finishing, and the loop alternating current is zero, and lead flows through 375 peace electric currents separately, recovers normal operation power supply.
Embodiment 6:
As shown in Figure 6, in the present embodiment, high voltage power transmisson system is the two poles of the earth high voltage direct current 2 division center lines, the transmission of electricity of every utmost point 6 bundle conductors; Switch and flow plug only are set in the ice-melt supply unit.
Present embodiment is similar to Example 5, different be every 6 bundle conductor L very
+ 1～L
+ 6, L
-1～L
-6Totally 14 leads.Fig. 4 shows 3 mounting points 1,2 and 3, in mounting points 1 and 3, correspondingly links together with 6 bundle conductors of 2 connecting lines with homopolarity respectively in the shunt, links together with 2 bundle conductors of 1 connecting line with center line respectively; At mounting points 2 places, correspondingly two end switch in the ice-melt supply unit are connected respectively to lead L
+ 1～L
+ 6, L
-1～L
-6, L
O1～L
O2Contact+
12,+
32,+
52,-
12,-
32, ,-
52, o
12With+
22,+
42,+
62,-
22,-
42,-
62, o
22On, the contact of other mounting points and the like.When transmission line normally moved, all switches all were in off-state.The ice-melt principle of present embodiment is similar to Example 5, different dividing into groups in twos for the every utmost point 6 bundle conductors, divide 3 ice-melts.
When transmission line adopts one pole or the two poles of the earth direct current transportation, and when every utmost point adopts the single conductor transmission, the connecting line construction of the specific embodiment of employing the utility model ice melting system is similar to the foregoing description 1 or 2, different is, ice-melt power supply in the ice-melt supply unit adopts AC power, and flow plug is a capacitor.Those skilled in the art can obtain this specific embodiment according to the foregoing description 1,2,5,6, so do not give unnecessary details at this.
When transmission line adopts the one pole direct current transportation, and every utmost point is when adopting the bundle conductor transmission, and those of ordinary skill in the art can obtain adopting the specific embodiment of the utility model ice melting system according to the foregoing description 1,2,5,6, so do not give unnecessary details at this.
Claims (9)
1. the ice melting system of a high tension power line with load operation, transmission line comprises at least two transmission pressures, adopts direct current or ac transmission, it is characterized in that:
Described transmission line is provided with the mounting points more than three or three, draws a contact at each mounting points place from each transmission pressure, and contact is divided into the plurality of sub section with transmission pressure;
Also comprise at least two shunts and at least one ice-melt supply unit, shunt and ice-melt supply unit are equipped with the terminal that quantitatively equates with transmission pressure bar number;
Described shunt and ice-melt supply unit are arranged alternately on each mounting points of transmission line, and its terminal is connected one by one with contact on the transmission pressure; The two strip sections that belong to different transmission pressures respectively and shunt, ice-melt supply unit between adjacent two mounting points of transmission line constitute regional ice-melt loop, shunt is used for two strip sections of connected loop, the ice-melt supply unit is used for two strip sections of connected loop, and provide a loop current to the loop, and also be in series with the switch that is used for gating section on the loop and stop the transmission pressure load current to feed the flow plug in this loop.
2. the ice melting system of high tension power line with load operation according to claim 1 is characterized in that: the distance on the described transmission line between adjacent two mounting points equates.
3. the ice melting system of high tension power line with load operation according to claim 1 and 2, it is characterized in that: described transmission line comprises the three-phase alternating current transmission pressure, and whenever adopts the single conductor transmission mutually; The ice-melt power supply adopts DC power supply in the described ice-melt supply unit; Described flow plug is a reactor; Described flow plug is arranged in the ice-melt supply unit, or is arranged in the shunt, or is located at simultaneously in ice-melt supply unit and the shunt; Described switch comprises the diverting switch that is connected on the shunt terminal and is connected on the mains switch of ice-melt supply unit terminal.
4. the ice melting system of high tension power line with load operation according to claim 3 is characterized in that: described transmission line also comprises the center line that adopts the single conductor transmission.
5. the ice melting system of high tension power line with load operation according to claim 1 and 2, it is characterized in that: described transmission line comprises the three-phase alternating current transmission pressure, and whenever adopts the bundle conductor transmission mutually; The ice-melt power supply adopts DC power supply in the described ice-melt supply unit; Described flow plug is a reactor; Described flow plug is arranged in the ice-melt supply unit; Described switch is the mains switch that is connected on ice-melt supply unit terminal; Described shunt couples together the contact of homophase bundle conductor in same mounting points respectively.
6. the ice melting system of high tension power line with load operation according to claim 1 and 2, it is characterized in that: described transmission line comprises one pole or the two poles of the earth direct current transportation lead, and every utmost point adopts the single conductor transmission; The ice-melt power supply adopts AC power in the described ice-melt supply unit; Described flow plug is a capacitor; Described flow plug is arranged in the ice-melt supply unit, or is arranged in the shunt, or is located at simultaneously in ice-melt supply unit and the shunt; Described switch comprises the diverting switch that is connected on the shunt terminal and is connected on the mains switch of ice-melt supply unit terminal.
7. the ice melting system of high tension power line with load operation according to claim 1 and 2, it is characterized in that: described transmission line comprises one pole or the two poles of the earth direct current transportation lead, and every utmost point adopts the bundle conductor transmission; The ice-melt power supply adopts AC power in the described ice-melt supply unit; Described flow plug is a capacitor; Described flow plug is arranged in the ice-melt supply unit; Described switch is the mains switch that is connected on ice-melt supply unit terminal; Described shunt couples together the contact of homopolarity bundle conductor in same mounting points respectively.
8. the ice melting system of high tension power line with load operation according to claim 5 is characterized in that: described transmission line also comprises the center line that adopts the bundle conductor transmission; Described shunt couples together the center line of bundle conductor transmission respectively at the contact of same mounting points.
9. the ice melting system of high tension power line with load operation according to claim 7 is characterized in that: described transmission line also comprises the center line that adopts the bundle conductor transmission; Described shunt couples together the center line of bundle conductor transmission respectively at the contact of same mounting points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200465189U CN201178282Y (en) | 2008-04-17 | 2008-04-17 | Loaded operating ice melting system for high-voltage power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200465189U CN201178282Y (en) | 2008-04-17 | 2008-04-17 | Loaded operating ice melting system for high-voltage power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178282Y true CN201178282Y (en) | 2009-01-07 |
Family
ID=40218304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200465189U Expired - Lifetime CN201178282Y (en) | 2008-04-17 | 2008-04-17 | Loaded operating ice melting system for high-voltage power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201178282Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915809A (en) * | 2014-03-26 | 2014-07-09 | 贺长宏 | Alternating-current power-supply-uninterrupted ice melting method and device for multi-split wires |
| CN104201633A (en) * | 2014-09-23 | 2014-12-10 | 马根昌 | Method for removing accumulated snow on high-altitude power transmission lines |
| CN104332926A (en) * | 2014-11-07 | 2015-02-04 | 吴三社 | Water removal and snow and ice removal protection device for high-voltage power transmission line |
-
2008
- 2008-04-17 CN CNU2008200465189U patent/CN201178282Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915809A (en) * | 2014-03-26 | 2014-07-09 | 贺长宏 | Alternating-current power-supply-uninterrupted ice melting method and device for multi-split wires |
| CN103915809B (en) * | 2014-03-26 | 2016-08-17 | 贺长宏 | A kind of alternating current circuit for multiple fission conductor does not have a power failure de-icing method and device thereof |
| CN104201633A (en) * | 2014-09-23 | 2014-12-10 | 马根昌 | Method for removing accumulated snow on high-altitude power transmission lines |
| CN104332926A (en) * | 2014-11-07 | 2015-02-04 | 吴三社 | Water removal and snow and ice removal protection device for high-voltage power transmission line |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080417 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |