CN103457225B - Based on the interchange de-icing method of flow battery - Google Patents
Based on the interchange de-icing method of flow battery Download PDFInfo
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- CN103457225B CN103457225B CN201310443076.7A CN201310443076A CN103457225B CN 103457225 B CN103457225 B CN 103457225B CN 201310443076 A CN201310443076 A CN 201310443076A CN 103457225 B CN103457225 B CN 103457225B
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Abstract
The invention discloses a kind of interchange de-icing method based on flow battery, comprise the steps: to need ice-thawing electric transmission line end and to comprise the grounding system of resistor with the 6th switch element and be connected; Master control system calculates the critical current preventing from needing ice-thawing electric transmission line icing; Master control system draws required ice-melt power; Close the 3rd switch element, closed connection high voltage bus and need the switch element at ice-thawing electric transmission line top and closed 6th switch element; Master control system controls flow battery electric power system power output and reaches required ice-melt power P; Master control system calculates ice-melt required time; Master control system judges whether to reach ice-melt required time, is, disconnects the 6th switch element; The present invention connects grounding system by needing ice-thawing electric transmission line end, needs ice-thawing electric transmission line top employing flow battery electric power system in conjunction with solar electric power supply system or wind power supply system as ice-melt AC power, not only energy-conservation but also practical, easy to use.
Description
Technical field
The present invention relates to transmission line de-icing technical field, be specially a kind of interchange de-icing method based on flow battery.
Background technology
China is one of country that powerline ice-covering is the most serious in the world, and serious icing can cause transmission line machinery and electric property sharply to decline, thus causes the generation of icing density.China Hunan, Hubei, Guizhou, Jiangxi, Yunnan, Sichuan, Henan and Shaanxi etc. are economized and powerline ice-covering accident were all once occurred, the icing density serious threat safe operation of China's electric power system, and cause huge economic loss.
The main harm of wire icing is as follows:
1, load is crossed: the actual weight of wire icing thickness exceedes design load a lot, thus causes overhead transmission line to occur the accident of machinery and electric aspect;
2, not deice the same period or uneven icing density: the uneven icing of adjacent shelves wire or do not deice generation Tension Difference the same period, make wire, ground wire slides in wire clamp, wire external layer aluminium stock time serious, will be made to twitch at wire clamp exit complete rupture, steel core;
3, ice insulator sudden strain of a muscle accident: covering ice for insulator or by after ice slush bridge joint, dielectric strength declines, and leakage distance shortens, during ice-melt, the local surfaces resistance of insulator increases, form flashover fault, in flashover evolution, sustained arc burn insulator, causes insulator dielectric intensity to reduce;
4, wire icing waves accident: wire produces because of uneven icing and waves under wind action, and the low-frequency high-amplitude of ice coating wire is waved and caused gold utensil damage, wire strand breakage, phase fault, shaft tower to tilt or the serious accident such as to collapse.
Therefore, the de-icing method of effective practicality attacks significant to alleviating Transmission Line in Winter by ice and snow, de-icing method of the prior art is mainly all kinds of thermal ice-melting method, the general principle of thermal ice-melting method is that the transmission current passed on the line higher than normal current density carries out ice-melt to obtain Joule heat, and early-stage Study mainly comprises: the high current density ice melting that nineteen eighty-two PohlmSn and LSnders adopts; Since 1976 China and short circuit current ice melting that since 1993, Canadian MSnitobS hydroelectric board adopts and 1987 ~ nineteen ninety the resistive ferromagnetic wires developed such as Japan YSsui, YSmSmoto and Fuji, current domestic 220kV and following transmission line, except adopt measures such as " keep away, change, resist, prevent " in power circuit design and construction except, for occurring in large-scale powerline ice-covering problem, the thermal ice-melting method of wire is most effective method.
Wherein, the principle exchanging de-icing technology is that icing circuit is applied AC power as load, there is provided ice melting current heating wires that icing is melted, there are the following problems for interchange de-icing method of the prior art: though adopt generating set to provide ice-melt power supply can reduce the restriction of investing and being subject to generating set capacity and ice-melt desired volume, majority of case does not satisfy the demands; Adopt system power supply limited as ice-melt power supply service condition, the system power supply power-off when electric network fault and off-the-line, cannot use.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of interchange de-icing method based on flow battery.
Technological means of the present invention is as follows:
Based on an interchange de-icing method for flow battery, comprise the steps:
S1: will ice-thawing electric transmission line end be needed and comprise the grounding system of resistor with the 6th switch element and be connected; Described resistor one end ground connection, the other end is connected with needing ice-thawing electric transmission line end by the 6th switch element, performs S2;
S2: master control system is according to formula I
c=(D/ ρ) [(t
s-t) (π h+ π σ ε t
3+ 2EVWc
w+ 2EVW
el
v] calculate the critical current I preventing from needing ice-thawing electric transmission line icing
c, wherein D needs the diameter of wire of ice-thawing electric transmission line, ρ to be the conductor resistance rate, the t that need ice-thawing electric transmission line
sfor needing the conductive line surfaces temperature of ice-thawing electric transmission line, h is convection transfer rate, σ is StefSn-BoltcomSnn constant, ε be need the wire blackness of ice-thawing electric transmission line, temperature, c that water capacity that E be the mobile even speed, the W that need the wire of ice-thawing electric transmission line to be humid air or supercooling water droplet to the capture coefficient of supercooling water droplet in air, V is humid air or supercooling water droplet, t are humid air or supercooling water droplet
wfor specific heat capacity at constant pressure, the W of water
efor at the liquid fraction, the L that need the conductive line surfaces of ice-thawing electric transmission line to evaporate
vfor the latent heat of vaporization of water, perform S3;
S3: master control system is according to the critical current I calculated
c, and current environmental temperature under need ice-thawing electric transmission line resistance and resistor draw required ice-melt power P=I with value R
c 2r, performs S4;
S4: close the 3rd switch element, closed connection high voltage bus and need the switch element at ice-thawing electric transmission line top and closed 6th switch element, performing S5;
S5: master control system controls flow battery electric power system power output and reaches required ice-melt power P; Described flow battery electric power system comprises the flow battery unit, energy storage inverter, the 3rd transformer and the 3rd switch element that are connected in series successively, and this flow battery electric power system output connects high voltage bus; Perform S6;
S6: master control system is according to formula
Calculate ice-melt required time T, wherein c
ifor specific heat, the T of ice
afor temperature, L
ffor latent heat, ρ that water condensation discharges
ifor density, the R of ice
0for needing wire mean radius, R after ice-thawing electric transmission line icing
ifor need ice-thawing electric transmission line not icing time wire radius, I
cthe critical current, the R that need ice-thawing electric transmission line icing is prevented for ice melting current is namely described
efor the resistance of unit long lead when zero degree, perform S7;
S7: master control system judges whether to reach ice-melt required time T, is perform S8, otherwise perform S7;
S8: disconnect the 6th switch element;
Further, described method also comprises the steps: after step s 3
C1: master control system judges whether the rated power of flow battery electric power system is more than or equal to required ice-melt power P, is perform S4, otherwise perform C2; ;
C2: master control system starts solar electric power supply system or wind generator system; Described solar electric power supply system is made up of multiple solar powered branch road parallel with one another; Described wind power supply system is made up of multiple wind power supply branch road parallel with one another; Solar powered branch road described in each comprises solar power plant, the first transformer and the first switch element; Wind power supply branch road described in each comprises wind power station, the second transformer and second switch unit; Described solar electric power supply system output is connected high voltage bus with wind power supply system output, performs C3;
C3: closed first switch element or second switch unit, closed 3rd switch element, the closed switch element connecting high voltage bus and need ice-thawing electric transmission line top, and closed 6th switch element, perform C4;
C4: master control system controls solar electric power supply system or wind generator system power output reaches required ice-melt power P jointly in conjunction with flow battery electric power system power output, performs S6;
Further, the described ice-thawing electric transmission line that needs is high pressure electric line, solar powered branch road or wind power supply branch road;
When being high pressure electric line when needing ice-thawing electric transmission line, described connection high voltage bus and need the switch element at ice-thawing electric transmission line top to be the 4th switch element, described high pressure electric line top connects high voltage bus by the 4th switch element, and described high pressure electric line end is connected with public electric wire net by the 5th switch element;
When being solar powered branch road when needing ice-thawing electric transmission line, described connection high voltage bus and need the switch element at ice-thawing electric transmission line top to be the first switch element;
When being wind power supply branch road when needing ice-thawing electric transmission line, described connection high voltage bus and need the switch element at ice-thawing electric transmission line top to be second switch unit;
Further, by the interconnective described solar electric power supply system of high voltage bus, wind power supply system and flow battery electric power system, the public electric wire net being connected high voltage bus with by high pressure electric line forms the micro-grid system be incorporated into the power networks;
Further, when being high pressure electric line when needing ice-thawing electric transmission line, before step S1, also there are following steps:
Disconnect the first switch element, second switch unit, the 3rd switch element, the 4th switch element and the 5th switch element;
Further, when being solar powered branch road when needing ice-thawing electric transmission line, before step S1, also there are following steps:
Disconnect the first switch element, second switch unit, the 3rd switch element, the 4th switch element and the connection between the first transformer and solar power plant; Described solar powered branch road disconnects the junction of solar power plant as needing ice-thawing electric transmission line end;
Further, when being wind power supply branch road when needing ice-thawing electric transmission line, before step S1, also there are following steps:
Disconnect the first switch element, second switch unit, the 3rd switch element, the 4th switch element and the connection between the second transformer and wind power station; Described wind power supply branch road disconnects the junction of wind power station as needing ice-thawing electric transmission line end;
Further, can be connected needing each phase of ice-thawing electric transmission line end with grounding system respectively;
Further, the two-phase or three-phase that need ice-thawing electric transmission line end can be shorted to and be connected with grounding system more together;
Further, the described 4th the 4th transformer between switch element and high voltage bus, is also provided with; Described first switch element, second switch unit, the 3rd switch element, the 4th switch element, the 5th switch element and the 6th switch element are hand switch or switch cubicle.
Owing to have employed technique scheme, interchange de-icing method based on flow battery provided by the invention, grounding system is connected by ice-thawing electric transmission line end will be needed, ice-thawing electric transmission line top is needed to adopt flow battery electric power system as ice-melt AC power, not only energy-conservation but also practical, easy to use, the problem that prior art employing generating set provides ice-melt power supply to limit by generating set capacity and ice-melt desired volume can not only be solved, avoid simultaneously and adopt system power supply to cause the problem that cannot use as the system power supply power-off when electric network fault and off-the-line of ice-melt power supply, the safety and stablization of effective guarantee transmission line under the weather of ice and snow severe cold, adopt master control system conservative control ice melting current and ice-melt time, deicing processes is safe and reliable, in addition, ice-melt power can also be jointly provided in conjunction with solar electric power supply system, wind generator system and flow battery electric power system, flow battery electric power system and solar electric power supply system, wind generator system and public electric wire net form the micro-grid system be incorporated into the power networks simultaneously, not only be convenient to normal power supply when not needing ice-melt, also be conducive to improving ice-melt power, and then extend the length needing ice-thawing electric transmission line that can realize ice-melt, applied range.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the flow charts of the method for the invention;
Fig. 3 is the system block diagram of the method for the invention.
In figure: 1, solar electric power supply system, 2, wind power supply system, 3, flow battery electric power system, 4, grounding system, 5, master control system, 6, high voltage bus, 7, high pressure electric line, 8, 4th switch element, 9, 5th switch element, 10, public electric wire net, 11, solar power plant, 12, first transformer, 13, first switch element, 21, second switch unit, 22, second transformer, 23, wind power station, 31, flow battery unit, 32, energy storage inverter, 33, 3rd transformer, 34, 3rd switch element, 41, resistor, 42, 6th switch element, 50, 4th transformer.
Embodiment
A kind of interchange de-icing method based on flow battery as shown in Figure 1, Figure 2 and Figure 3, comprises the steps:
S1: will ice-thawing electric transmission line end be needed and comprise the grounding system 4 of resistor 41 with the 6th switch element 42 and be connected; Described resistor 41 one end ground connection, the other end is connected with needing ice-thawing electric transmission line end by the 6th switch element 42, performs S2;
S2: master control system 5 is according to formula I
c=(D/ ρ) [(t
s-t) (π h+ π σ ε t
3+ 2EVWc
w+ 2EVW
el
v] calculate the critical current I preventing from needing ice-thawing electric transmission line icing
c, wherein D needs the diameter of wire of ice-thawing electric transmission line, ρ to be the conductor resistance rate, the t that need ice-thawing electric transmission line
sfor needing the conductive line surfaces temperature of ice-thawing electric transmission line, h is convection transfer rate, σ is StefSn-BoltcomSnn constant, ε be need the wire blackness of ice-thawing electric transmission line, temperature, c that water capacity that E be the mobile even speed, the W that need the wire of ice-thawing electric transmission line to be humid air or supercooling water droplet to the capture coefficient of supercooling water droplet in air, V is humid air or supercooling water droplet, t are humid air or supercooling water droplet
wfor specific heat capacity at constant pressure, the W of water
efor at the liquid fraction, the L that need the conductive line surfaces of ice-thawing electric transmission line to evaporate
vfor the latent heat of vaporization of water, perform S3;
S3: master control system 5 is according to the critical current I calculated
c, and current environmental temperature under need ice-thawing electric transmission line resistance and resistor 41 resistance draw required ice-melt power P=I with value R
c 2r, performs S4;
S4: close the 3rd switch element 34, closed connection high voltage bus 6 and need the switch element at ice-thawing electric transmission line top and closed 6th switch element 42, performing S5;
S5: master control system 5 controls flow battery electric power system 3 power output and reaches required ice-melt power P; Described flow battery electric power system 3 comprises the flow battery unit 31, energy storage inverter 32, the 3rd transformer 33 and the 3rd switch element 34 that are connected in series successively, and this flow battery electric power system 3 output connects high voltage bus 6; Perform S6;
S6: master control system 5 is according to formula
Calculate ice-melt required time T, wherein c
ifor specific heat, the T of ice
afor temperature, L
ffor latent heat, ρ that water condensation discharges
ifor density, the R of ice
0for needing wire mean radius, R after ice-thawing electric transmission line icing
ifor need ice-thawing electric transmission line not icing time wire radius, I
cthe critical current, the R that need ice-thawing electric transmission line icing is prevented for ice melting current is namely described
efor the resistance of unit long lead when zero degree, perform S7;
S7: master control system 5 judges whether to reach ice-melt required time T, is perform S8, otherwise perform S7;
S8: disconnect the 6th switch element 42;
Further, described method also comprises the steps: after step s 3
C1: master control system 5 judges whether the rated power of flow battery electric power system 3 is more than or equal to required ice-melt power P, is perform S4, otherwise perform C2; ;
C2: master control system 5 starts solar electric power supply system 1 or wind generator system 2; Described solar electric power supply system 1 is made up of multiple solar powered branch road parallel with one another; Described wind power supply system 2 is made up of multiple wind power supply branch road parallel with one another; Solar powered branch road described in each comprises solar power plant 11, first transformer 12 and the first switch element 13; Wind power supply branch road described in each comprises wind power station 23, second transformer 22 and second switch unit 21; Described solar electric power supply system 1 output is connected high voltage bus 6 with wind power supply system 2 output, performs C3;
C3: closed first switch element 13 or second switch unit 21, closed 3rd switch element 34, the closed switch element connecting high voltage bus 6 and need ice-thawing electric transmission line top, and closed 6th switch element 42, perform C4;
C4: master control system 5 controls solar electric power supply system 1 or wind generator system 2 power output reaches required ice-melt power P jointly in conjunction with flow battery electric power system 3 power output, performs S6;
Further, the described ice-thawing electric transmission line that needs is high pressure electric line 7, solar powered branch road or wind power supply branch road; When being high pressure electric line 7 when needing ice-thawing electric transmission line, described connection high voltage bus 6 and need the switch element at ice-thawing electric transmission line top to be the 4th switch element 8, described high pressure electric line 7 top connects high voltage bus 6 by the 4th switch element 8, and described high pressure electric line 7 end is connected with public electric wire net 10 by the 5th switch element 9; When being solar powered branch road when needing ice-thawing electric transmission line, described connection high voltage bus 6 and need the switch element at ice-thawing electric transmission line top to be the first switch element 13; When being wind power supply branch road when needing ice-thawing electric transmission line, described connection high voltage bus 6 and need the switch element at ice-thawing electric transmission line top to be second switch unit 21; Further, by the interconnective described solar electric power supply system 1 of high voltage bus 6, wind power supply system 2 and flow battery electric power system 3, the public electric wire net 10 being connected high voltage bus 6 with by high pressure electric line 7 forms the micro-grid system be incorporated into the power networks; Further, when being high pressure electric line 7 when needing ice-thawing electric transmission line, before step S1, also there are following steps: disconnect the first switch element 13, second switch unit 21, the 3rd switch element 34, the 4th switch element 8 and the 5th switch element 9; Further, when being solar powered branch road when needing ice-thawing electric transmission line, before step S1, also there are following steps: disconnect the first switch element 13, second switch unit 21, the 3rd switch element 34, the 4th switch element 8 and the connection between the first transformer 12 and solar power plant 11; Described solar powered branch road disconnects the junction of solar power plant 11 as needing ice-thawing electric transmission line end; Further, when being wind power supply branch road when needing ice-thawing electric transmission line, before step S1, also there are following steps: disconnect the first switch element 13, second switch unit 21, the 3rd switch element 34, the 4th switch element 8 and the connection between the second transformer 22 and wind power station 23; Described wind power supply branch road disconnects the junction of wind power station 23 as needing ice-thawing electric transmission line end; Further, can be connected needing each phase of ice-thawing electric transmission line end with grounding system 4 respectively; Further, the two-phase or three-phase that need ice-thawing electric transmission line end can be shorted to and be connected with grounding system 4 more together; Further, the 4th transformer 50 is also provided with between described 4th switch element 8 and high voltage bus 6; Described first switch element 13, second switch unit 21, the 3rd switch element 34, the 4th switch element 8, the 5th switch element 9 and the 6th switch element 42 are hand switch or switch cubicle.
During actual use, ice-melt scope can be in power plant or outside power plant in electric line arbitrarily, can according to the length needing ice-thawing electric transmission line, ice-melt is carried out by needing ice-thawing electric transmission line segmentation, when calculating ice melting current limit value, also can environmentally temperature lower wire maximum permissible temperature by 70 DEG C consider the long-time running electric current that allows and ambient temperature correction factor amass obtain icing time maximum ice melting current size, for LGL-120 wire, when ambient temperature is 25 DEG C, conductor temperature is by 70 DEG C of calculating, wire allows electric current to be 380A for a long time, adjusted coefficient K is multiplied by when ambient temperature is not 25 DEG C
t, wherein the computing formula of correction factor is
q
1for wire maximum temperature, Q
efor current environmental temperature, Q
sfor normal temperature, in addition, needing the wire blackness ε of ice-thawing electric transmission line to work as new wire value is 0.23 ~ 0.43, old wire value is 0.9, flow battery electric power system comprises the flow battery unit be connected in series successively, energy storage inverter, 3rd transformer and the 3rd switch element, described flow battery electric power system output connects high voltage bus, wherein flow battery unit comprises flow cell pile, cell liquor pump and battery management system etc., flow battery electric power system, solar electric power supply system, wind generator system and public electric wire net form the micro-grid system be incorporated into the power networks, flow battery electric power system can by solar energy or wind energy storage to flow battery by it energy storage inverter comprised, the energy stored in flow battery also can be released into high voltage bus by energy storage inverter, therefore define using flow battery as main ice-melt power supply, and as the Power Support of solar power system and wind generator system, applied range, the ice melting current calculated according to master control system and ice-melt time control deicing processes, safe and reliable, described solar electric power supply system is made up of multiple solar powered branch road parallel with one another, and multiple solar powered branch road can work simultaneously also can work independently, and likely occurs icing phenomenon when quitting work at the power supply branch road that ice and snow weather is longer, described wind power supply system is made up of multiple wind power supply branch road parallel with one another, and multiple wind power supply branch road can work simultaneously also can work independently, and likely occurs icing phenomenon when quitting work at the power supply branch road that ice and snow weather is longer, solar powered branch road described in each comprises solar power plant, the first transformer and the first switch element, wind power supply branch road described in each comprises wind power station, the second transformer and second switch unit, when carrying out ice-melt to high pressure electric line, if the rated power of flow battery electric power system is less than ice-melt power, then start solar electric power supply system or wind power supply system with the power difference of the rated power of supplementary ice-melt power and flow battery electric power system, when simultaneity factor normally works during not ice-melt, flow battery electric power system can energy-storage solar or wind energy, when carrying out ice-melt to solar powered branch road, if the rated power of flow battery electric power system is less than ice-melt power, then can start other the solar powered branch roads in wind power supply system or solar electric power supply system to supplement the under powered part of ice-melt, when carrying out ice-melt to wind power supply branch road, if the rated power of flow battery electric power system is less than ice-melt power, then can start other wind power supply branch roads in solar electric power supply system or wind power supply system to supplement the under powered part of ice-melt, master control system is according to the critical current I calculated
c, under current environmental temperature need ice-thawing electric transmission line resistance and resistor draw required ice-melt power P=I with value R
c 2r, wherein R be the resistance that needs ice-thawing electric transmission line resistance value to be added with resistance value to obtain and, interchange de-icing method based on flow battery provided by the invention, grounding system is connected by ice-thawing electric transmission line end will be needed, ice-thawing electric transmission line top is needed to adopt flow battery electric power system as ice-melt AC power, not only energy-conservation but also practical, easy to use, the problem that prior art employing generating set provides ice-melt power supply to limit by generating set capacity and ice-melt desired volume can not only be solved, avoid simultaneously and adopt system power supply to cause the problem that cannot use as the system power supply power-off when electric network fault and off-the-line of ice-melt power supply, the safety and stablization of effective guarantee transmission line under the weather of ice and snow severe cold, adopt master control system conservative control ice melting current and ice-melt time, deicing processes is safe and reliable, in addition, ice-melt power can also be jointly provided in conjunction with solar electric power supply system, wind generator system and flow battery electric power system, flow battery electric power system and solar electric power supply system, wind generator system and public electric wire net form the micro-grid system be incorporated into the power networks simultaneously, not only be convenient to normal power supply when not needing ice-melt, also be conducive to improving ice-melt power, and then extend the length needing ice-thawing electric transmission line that can realize ice-melt, applied range.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1., based on an interchange de-icing method for flow battery, it is characterized in that comprising the steps:
S1: will ice-thawing electric transmission line end be needed and comprise the grounding system (4) of resistor (41) with the 6th switch element (42) and be connected; Described resistor (41) one end ground connection, the other end is connected with needing ice-thawing electric transmission line end by the 6th switch element (42), performs S2;
S2: master control system (5) is according to formula
calculate the critical current I preventing from needing ice-thawing electric transmission line icing
c, wherein D needs the diameter of wire of ice-thawing electric transmission line, ρ to be the conductor resistance rate, the t that need ice-thawing electric transmission line
sfor needing the conductive line surfaces temperature of ice-thawing electric transmission line, h is convection transfer rate, σ is StefSn-BoltcomSnn constant, ε be need the wire blackness of ice-thawing electric transmission line, temperature, c that water capacity that E be the mobile even speed, the W that need the wire of ice-thawing electric transmission line to be humid air or supercooling water droplet to the capture coefficient of supercooling water droplet in air, V is humid air or supercooling water droplet, t are humid air or supercooling water droplet
wfor specific heat capacity at constant pressure, the W of water
efor at the liquid fraction, the L that need the conductive line surfaces of ice-thawing electric transmission line to evaporate
vfor the latent heat of vaporization of water, perform S3;
S3: master control system (5) is according to the critical current I calculated
c, and current environmental temperature under need ice-thawing electric transmission line resistance and resistor (41) resistance draw required ice-melt power P=I with value R
c 2r, performs S4;
S4: close the 3rd switch element (34), closed connection high voltage bus (6) and need the switch element at ice-thawing electric transmission line top and closed 6th switch element (42), performing S5;
S5: master control system (5) controls flow battery electric power system (3) power output and reaches required ice-melt power P; Described flow battery electric power system (3) comprises the flow battery unit (31), energy storage inverter (32), the 3rd transformer (33) and the 3rd switch element (34) that are connected in series successively, and this flow battery electric power system (3) output connects high voltage bus (6); Perform S6;
S6: master control system (5) is according to formula
Calculate ice-melt required time T, wherein c
ifor specific heat, the T of ice
afor temperature, L
ffor latent heat, ρ that water condensation discharges
ifor density, the R of ice
0for needing wire mean radius, R after ice-thawing electric transmission line icing
ifor need ice-thawing electric transmission line not icing time wire radius, I
cthe critical current, the R that need ice-thawing electric transmission line icing is prevented for ice melting current is namely described
efor the resistance of unit long lead when zero degree, perform S7;
S7: master control system (5) judges whether to reach ice-melt required time T, is perform S8, otherwise perform S7;
S8: disconnect the 6th switch element (42).
2. a kind of interchange de-icing method based on flow battery according to claim 1, is characterized in that described method also comprises the steps: after step s 3
C1: master control system (5) judges whether the rated power of flow battery electric power system (3) is more than or equal to required ice-melt power P, is perform S4, otherwise perform C2;
C2: master control system (5) starts solar electric power supply system (1) or wind generator system (2); Described solar electric power supply system (1) is made up of multiple solar powered branch road parallel with one another; Described wind power supply system (2) is made up of multiple wind power supply branch road parallel with one another; Solar powered branch road described in each comprises solar power plant (11), the first transformer (12) and the first switch element (13); Wind power supply branch road described in each comprises wind power station (23), the second transformer (22) and second switch unit (21); Described solar electric power supply system (1) output is connected high voltage bus (6) with wind power supply system (2) output, performs C3;
C3: closed first switch element (13) or second switch unit (21), closed 3rd switch element (34), the closed switch element connecting high voltage bus (6) and need ice-thawing electric transmission line top, and closed 6th switch element (42), perform C4;
C4: master control system (5) controls solar electric power supply system (1) or wind generator system (2) power output reaches required ice-melt power P jointly in conjunction with flow battery electric power system (3) power output, performs S6.
3. a kind of interchange de-icing method based on flow battery according to claim 2, is characterized in that the described ice-thawing electric transmission line that needs is high pressure electric line (7), solar powered branch road or wind power supply branch road;
When being high pressure electric line (7) when needing ice-thawing electric transmission line, described connection high voltage bus (6) and need the switch element at ice-thawing electric transmission line top to be the 4th switch element (8), described high pressure electric line (7) top connects high voltage bus (6) by the 4th switch element (8), and described high pressure electric line (7) end is connected with public electric wire net (10) by the 5th switch element (9);
When being solar powered branch road when needing ice-thawing electric transmission line, described connection high voltage bus (6) and need the switch element at ice-thawing electric transmission line top to be the first switch element (13);
When being wind power supply branch road when needing ice-thawing electric transmission line, described connection high voltage bus (6) and need the switch element at ice-thawing electric transmission line top to be second switch unit (21).
4. a kind of interchange de-icing method based on flow battery according to claim 3, it is characterized in that by the interconnective described solar electric power supply system (1) of high voltage bus (6), wind power supply system (2) and flow battery electric power system (3), the public electric wire net (10) being connected high voltage bus (6) with by high pressure electric line (7) forms the micro-grid system be incorporated into the power networks.
5. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that, when needing ice-thawing electric transmission line to be high pressure electric line (7), also having following steps before step S1:
Disconnect the first switch element (13), second switch unit (21), the 3rd switch element (34), the 4th switch element (8) and the 5th switch element (9).
6. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that, when needing ice-thawing electric transmission line to be solar powered branch road, also having following steps before step S1:
Disconnect the first switch element (13), second switch unit (21), the 3rd switch element (34), the 4th switch element (8) and the connection between the first transformer (12) and solar power plant (11); Described solar powered branch road disconnects the junction of solar power plant (11) as needing ice-thawing electric transmission line end.
7. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that, when needing ice-thawing electric transmission line to be wind power supply branch road, also having following steps before step S1:
Disconnect the first switch element (13), second switch unit (21), the 3rd switch element (34), the 4th switch element (8) and the connection between the second transformer (22) and wind power station (23); Described wind power supply branch road disconnects the junction of wind power station (23) as needing ice-thawing electric transmission line end.
8. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that needing each phase of ice-thawing electric transmission line end to be connected with grounding system (4) respectively.
9. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that the two-phase or three-phase that need ice-thawing electric transmission line end to be shorted to be connected with grounding system (4) more together.
10. a kind of interchange de-icing method based on flow battery according to claim 3, is characterized in that also being provided with the 4th transformer (50) between described 4th switch element (8) and high voltage bus (6); Described first switch element (13), second switch unit (21), the 3rd switch element (34), the 4th switch element (8), the 5th switch element (9) and the 6th switch element (42) are hand switch or switch cubicle.
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| 基于液流电池储能的光伏发电系统容量配置及成本分析;胡国珍，段善旭，蔡涛，陈昌松;《电工技术学报》;20120531;第27卷(第5期);第260页至第266页 * |
| 液流电池储能技术研究现状与展望;贾志军，宋士强，王保国;《储能科学与技术》;20120930;第1卷(第1期);第50页至第56页 * |
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Effective date of registration: 20171205 Address after: Thirty Lingang Industrial Zone, 116103 Li Pu new district, Liaoning, Dalian Patentee after: Dalian Raycom energy storage equipment Co. Ltd. Address before: Hi Tech Park XinDa street Dalian city Liaoning province 116025 No. 22 Patentee before: Dalian Rongke Power Co., Ltd. |