WO2018019240A1 - 便携式应急电源 - Google Patents

便携式应急电源 Download PDF

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Publication number
WO2018019240A1
WO2018019240A1 PCT/CN2017/094379 CN2017094379W WO2018019240A1 WO 2018019240 A1 WO2018019240 A1 WO 2018019240A1 CN 2017094379 W CN2017094379 W CN 2017094379W WO 2018019240 A1 WO2018019240 A1 WO 2018019240A1
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WIPO (PCT)
Prior art keywords
melting
ice
wire
switch
melted
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Ceased
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PCT/CN2017/094379
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English (en)
French (fr)
Inventor
陆佳政
朱远
李波
谭艳军
朱思国
周秀冬
黄清军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiang-Electric Experiment And Research Technology Co Of Hunan Province
State Grid Hunan Electric Power Co Ltd
Disaster Prevention and Mitigation Center of State Grid Hunan Electric Power Co Ltd
State Grid Corp of China SGCC
Original Assignee
Xiang-Electric Experiment And Research Technology Co Of Hunan Province
State Grid Hunan Electric Power Co Ltd
Disaster Prevention and Mitigation Center of State Grid Hunan Electric Power Co Ltd
State Grid Corp of China SGCC
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Application filed by Xiang-Electric Experiment And Research Technology Co Of Hunan Province, State Grid Hunan Electric Power Co Ltd, Disaster Prevention and Mitigation Center of State Grid Hunan Electric Power Co Ltd, State Grid Corp of China SGCC filed Critical Xiang-Electric Experiment And Research Technology Co Of Hunan Province
Priority to CA3034698A priority Critical patent/CA3034698C/en
Publication of WO2018019240A1 publication Critical patent/WO2018019240A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/16—Devices for removing snow or ice from lines or cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover

Definitions

  • the present disclosure pertains to the field of electrical engineering technology, for example, to a portable emergency power source.
  • the present disclosure provides a portable emergency power supply, which can be used as an emergency power supply to protect power.
  • the distribution network When the distribution network is exposed to rain and snow, it is used for melting ice on the distribution line, improving the utilization rate and coverage of the device, and effectively supporting the distribution network. The line runs safely.
  • a portable emergency power supply including an intermediate frequency generator, a 12-pulse rectification component, a series-parallel switching knife switch, an emergency power switch, a DC ice-melting switch, an inverter component, a DC ice-melting wiring device, and a melting ice three Short wiring;
  • the intermediate frequency generator output is connected to the uncontrolled twelve-pulse rectifying component, and the uncontrolled twelve-pulse rectifying component is connected to the series-parallel switching knife gate, and the series-parallel switching knife gate passes the emergency power supply a switch is connected to the inverter component to implement a power supply function;
  • the uncontrolled twelve-pulse rectifying component is configured to rectify an output current of the intermediate frequency generator, and the rectified output current is referred to as a rectified current;
  • the series-parallel switching knife gate is configured to adjust an output voltage of the intermediate frequency generator and the rectified current to meet different melting demand of different lines and different power requirements during power supply;
  • the inverter component is configured to invert the output voltage to obtain a power frequency voltage
  • the emergency power switch is configured to control disconnection and connection between the series-parallel switching knife gate and the inverter component
  • the series-parallel switching knife gate is further connected to the DC ice-melting wiring device through the DC ice-melting switch, and the DC ice-melting wiring device is disposed to be connected to the first end of the ice-melting wire to be melted.
  • the second end is short-circuited by the three-phase short-circuit of the melting ice to realize the DC melting function;
  • the DC ice melting switch is configured to control a connection and disconnection between the series-parallel switching knife gate and the DC ice-melting wiring device, and is interlocked with the emergency power switch;
  • the DC ice melting wiring device is arranged to realize DC melting ice of the distribution network line.
  • the series-parallel switching knife gate comprises a first parallel knife gate, a second parallel knife gate and a serial knife gate, wherein the first parallel knife gate is connected in parallel with the second parallel knife gate, and the first end of the series knife gate is The first end of the first parallel switch is connected, and the second end of the series switch is connected to the first end of the second parallel switch.
  • the DC ice melting wiring device comprises: a first positive joint, a second positive joint and a negative joint;
  • the wire to be melted includes a first wire to be melted and a wire to be melted;
  • the first end of the first positive joint is connected to the first end of the second positive joint, and is disposed to be connected to the positive pole of the DC ice melting switch, and the first end of the negative joint is set to be connected to the negative pole of the ice melting switch;
  • the second end of the first positive joint is suspended, the second end of the second positive joint is connected to the first ice-melting wire, and the second end of the negative joint is connected to the second ice-melting wire; Or the second end of the first positive connector is connected to the first ice-melting wire, the second end of the second positive connector is suspended, and the second end of the negative connector is connected to the second wire to be melted .
  • the DC ice melting wiring device comprises: a first positive joint, a second positive joint and a negative joint;
  • the wire to be melted includes a first wire to be melted, a second wire to be melted, and a third wire to be melted;
  • the first end of the first positive joint is connected to the first end of the second positive joint, and is disposed to be connected to the positive pole of the DC ice melting switch, and the first end of the negative joint is set to be connected to the negative pole of the ice melting switch;
  • the second end of the second positive joint is connected to the first ice-melting wire
  • the second end of the negative joint is connected to the second ice-melting wire
  • the second end of the first positive joint is The third wire to be melted is connected.
  • the DC ice melting wiring device further comprises an ice melting cable and a melting ice clip;
  • At least one of the first positive joint, the second positive joint, and the negative joint is connected to the ice melting clamp by an ice melting cable, and the ice melting clamp is disposed to be in contact with the first end of the wire to be melted.
  • the ice-melting short-circuit includes a short-connecting clip and a short-circuit cable, and is disposed at a second end of the wire to be melted, and is configured to realize a three-phase short-circuit grounding of the to-be-melted ice wire in the distribution network line, Perform DC melting ice.
  • the portable emergency power supply provided by the present disclosure has the functions of DC ice melting and emergency power supply, and greatly expands the scope of use, and is generally used for emergency power conservation, and is used for DC melting ice of distribution network lines during the glazing period;
  • the potential of scale promotion will greatly enhance the ability of the agricultural distribution network line to resist large-scale rain and snow freezing disasters after large-scale use; it has multi-channel regulation function, wide range of power supply and melting ice, simple control system, good melting ice voltage DC performance
  • the power supply mode of rectification and inverter greatly reduces the size and weight of the generator.
  • the two can be manually transported, and the emergency power supply and ice melting are highly mobile; Short-circuit with three-phase, convenient wiring, high efficiency of melting ice, and short-circuit grounding of three-phase at the end, effectively preventing the danger of reverse power transmission when the distribution line is melting ice.
  • FIG. 1 is a schematic structural view of a portable emergency power supply in the embodiment
  • FIG. 2 is a schematic structural view of a series-parallel switching knife switch in the embodiment
  • FIG. 3 is a schematic structural view of the DC ice-melting wiring device 7 in the embodiment.
  • FIG. 4 is a schematic structural view showing the three-phase short wiring 9 of the ice melting in the present embodiment.
  • the portable emergency power supply has a wide range of applications, so that the portable power source has the ability to melt ice, which will greatly improve the configuration rate of the ice-melting components, and play an emergency power-saving function, effectively supporting the safety of the distribution network in the rain and snow disaster and reliable power supply. Sex.
  • FIG. 1 is a schematic structural view of a portable emergency power supply in the present embodiment
  • FIG. 2 is a schematic structural view of a series-parallel switching knife gate in the present embodiment
  • FIG. 3 is a schematic view of the DC ice-melting wiring device 7 in the present embodiment. Schematic diagram of the structure
  • FIG. 4 is a schematic structural view of the three-phase short wiring 9 of the ice melting in the present embodiment.
  • a portable emergency power supply having a DC melting function
  • the device includes an intermediate frequency generator, an uncontrolled twelve-pulse rectifying component 2, a series-parallel switching knife gate 3, an emergency power switch 4, The DC ice-melting switch 5, the inverter component 6, the DC ice-melting wiring device 7, and the melting ice three-phase short wiring 9.
  • the intermediate frequency generator 1 output is connected to the uncontrolled twelve-pulse rectifying unit 2, and the uncontrolled twelve-pulse rectifying unit 2 is connected to the series-parallel switching knife gate 3, and the series-parallel switching knife gate 3 Connecting the inverter component 6 through the emergency power switch 4 to implement a power supply function;
  • the uncontrolled twelve-pulse rectifying component 2 is arranged to rectify an output current of the intermediate frequency generator 1, and the rectified output current is referred to as a rectified current;
  • the series-parallel switching knife gate 3 is arranged to adjust an output voltage of the intermediate frequency generator 1 and the rectified current to meet different melting demand of different lines and different power requirements during power supply;
  • the inverter component 6 is configured to invert the output voltage corresponding to the rectified current to obtain a power frequency voltage:
  • the emergency power switch 4 is configured to control disconnection and connection between the series-parallel switching knife gate 3 and the inverter component 6;
  • the series-parallel switching knife gate 3 is further connected to the DC ice-melting wiring device through the DC ice-melting switch 5 7 , the DC ice-melting wiring device 7 is disposed to be connected to the first end of the ice-melting wire 8 , and the second end of the ice-melting wire 8 is short-circuited by the three-phase short wire 9 To achieve DC melting ice function;
  • the DC ice melting switch 7 is arranged to control the connection and disconnection between the series-parallel switching knife gate 3 and the DC ice-melting wiring device 7, and is interlocked with the emergency power switch 4;
  • the DC ice-melting wiring device 7 is arranged to realize DC-melting ice of the wire to be melted.
  • the intermediate frequency generator 1 of the present embodiment may be a commercially available TFDJ-12 light type generator with a size of 0.7 m ⁇ 0.7 m ⁇ 0.6 m, a weight of 80 kg, a power generation power of 12 kW, a power generation frequency of 400 Hz, and an output voltage range of 12 V to 24 V.
  • 12-pulse rectification unit 2 can be controlled by XDJS-20 type 12-pulse rectifier, rated current 500A, rated voltage 30V; series-parallel switching knife 3 can be CK-20 small Switching the knife gate; the emergency power switch 4 and the melting ice power switch 5 are connected by cables; the inverter component 6 can be a commercially available FLUKENB-9 type inverter, the inverter power is 9 kW, and the self-contained voltage display function can basically satisfy All small emergency power supply requirements;
  • DC ice-melting wiring device 7 connector can be self-made joints, with a shunt for measuring the melting current, the flow capacity is 500A, the ice melting cable can be JV-120 cable, each The root length is 30m, the length of each line clamp is 3m, and each phase adopts two dockings to meet the requirements of all the ice-wire connection of the distribution line.
  • the three-phase short-circuit of the ice-melting can be the same configuration as that of the ice-melting clamp. Belt connection Short cables ground nail.
  • the intermediate frequency generator is used for generating a special synchronous generator of three-phase intermediate frequency electric energy. Usually the frequency range of the intermediate frequency generator is above the power frequency, below 10,000 Hz.
  • the emergency power switch 4 and the ice melting power switch 5 are disconnected, and the operator may disconnect the emergency power switch 4 and the ice melting power switch 5, and adjust the voltage of the intermediate frequency generator 1 and the series-parallel switch. 3
  • the DC output is brought to the rated voltage of the inverter component 6, and the intermediate frequency generator 1 is turned off, the emergency power switch 4 is closed, and the ice melting power switch 5 continues to be in an open state, and the intermediate frequency generator 1 is turned on to realize the emergency power supply function. .
  • the ice melting wiring is connected to the circuit shown in Figure 1 according to the melting ice scheme, and the three-phase short-circuit grounding, that is, the melting three-phase short wiring 9 first end access map
  • the second end is grounded, and the position of the series-parallel knife gate 3 is adjusted, the voltage of the intermediate frequency generator 1 is adjusted to the lowest position, the ice-melting power switch 5 is closed, the emergency power switch 4 is disconnected, and the power is turned on.
  • the frequency generator 1 adjusts the voltage to the corresponding melting current, and performs DC melting ice.
  • the DC ice melting device 7 performs the phase inversion ice melting until the three-phase melting ice is completely finished.
  • the voltage output is the lowest in series and parallel switch 3, that is, the series switch 31 is disconnected.
  • the first parallel switch 32 and the second parallel switch 33 are closed, the output voltage is the highest in series and parallel.
  • the gate 31 is closed and the first parallel switch 32 is disconnected from the second parallel switch 33, the output voltage is calculated as under:
  • U DC is the output voltage of DC melting ice
  • U AC is the output voltage of the intermediate frequency generator 1
  • the output voltage of the intermediate frequency generator 1 can range from 12V to 24V.
  • k is the coefficient in series, and the DC melting ice is calculated.
  • the output voltage range is 15V-60V. According to the line parameters of multiple agricultural distribution networks, the DC melting range can be calculated.
  • the melting distance of the device can be calculated as shown in Table 1.
  • the wire to be melted 8 is a three-phase wire, which is an upper phase conductor, a middle phase conductor and a lower phase conductor from top to bottom.
  • the two-phase series connection means that the second positive electrode joint 73 in FIG.
  • the two-phase series connection may be that the first positive terminal 72 in FIG. 3 is connected to the phase conductor, the negative terminal 71 is connected to the phase conductor, the upper and lower two-phase wires are connected in series, and the second positive joint 73 is suspended, that is, temporarily not correct.
  • the upper phase wire is melted by ice; the two strings are connected to the lower phase wire in FIG.
  • the negative electrode terminal 71 is connected to the phase wire
  • the first positive electrode connector 72 is connected to the middle phase wire
  • the second positive electrode connector 73 is connected.
  • the upper phase conductor, wherein 71 and the first positive terminal 72 are connected together, realizes the parallel connection of the upper phase conductor and the middle phase conductor, and is connected in series with the lower phase conductor, and only melts the ice for the lower phase conductor.
  • the above-mentioned ice melting scheme may refer to a scheme formulated for a specific ice melting circuit before melting ice, including Wiring, melting ice voltage, and expected ice melting time
  • the working principle of the portable emergency power supply of the embodiment is: the medium frequency generator 1 of the device is used as the melting ice and the emergency power source, and the device uses the intermediate frequency power generation to greatly reduce the size of the generator and the power and voltage are guaranteed.
  • the weight is sorted by the uncontrolled twelve-pulse rectifying unit 2 to output a high-quality DC voltage.
  • the two outputs of the uncontrolled twelve-pulse rectifying unit 2 are merged by the series-parallel switching knife gate 3. When the series-connecting knife gate 31 is closed, the two outputs of the twelve-pulse rectifying unit 2 are not controlled in series, and the voltage is the highest.
  • the output of the series-parallel switching knife gate 3 is connected to the DC ice-melting wiring device 7 through the DC ice-melting switch 5, and the first positive electrode connector 72 and the second positive electrode connector 73 are connected in the DC ice-melting wiring device 7, and the DC ice-melting switch is connected at the same time.
  • the positive electrode of the fifth electrode and the negative electrode terminal 71 are connected to the negative electrode of the ice melting switch 5.
  • Each of the first positive electrode connector 72, the second positive electrode connector 73 and the negative electrode connector 71 is connected to the ice melting wire clamp 75 through the ice melting cable 74.
  • the corresponding wire clamp is connected to the ice-melting wire 8 to be melted, and the short-circuit clamp 91 and the short-circuit cable 92 are used to realize three-phase short-circuit grounding at the end of the wire to be melted, and DC ice melting is performed.
  • the series-parallel switching knife gate 3 can realize high voltage and large current (that is, the maximum voltage can reach 60V when connected in series, and the maximum current can reach 400A in parallel, which is sufficient for melting the wire of the distribution network), and meet the requirements of different lines.
  • the first parallel switch 32 is interlocked with the second parallel switch 33 (ie, the first parallel switch 32 and the second parallel switch 33 are simultaneously opened or closed), and simultaneously
  • the series switch 31 is blocked (ie, the first parallel switch 32 and the second parallel switch 33 are closed, the series switch 31 must be in an open state) to prevent a short circuit; the emergency power switch 4 and the DC ice-melting switch 5 are passed.
  • the direct switching between the DC melting ice and the emergency power supply is realized, and the two switches are locked to each other; the DC melting device 7 can realize the simultaneous melting of the two-phase wire and the melting of the one-phase wire, and the second positive electrode connector 73 and the negative electrode connector 71 are used.
  • the two-phase wires are connected to realize two-phase series melting ice, and the two-phase wires are simultaneously melted with ice, and the second positive electrode connector 73, the first positive electrode connector 72 and the negative electrode connector 71 are simultaneously connected with the three-phase wires to realize two-in-one series melting ice. Only serial connection Line melts ice.
  • the embodiment adopts the intermediate frequency power generation technology as the power source, first rectifies, and then inverts the rectified DC voltage to obtain a power frequency voltage, and reduces the size and weight of the emergency power supply when the guaranteed power is constant.
  • the DC voltage is directly taken from the middle for melting ice, and the device is highly maneuverable.
  • the cable and the cable clamp are used to connect the wire to be melted and the three phases are realized.
  • the embodiment adopts a rectifier that does not control the twelve-pulse rectification component as the intermediate frequency generator, and the device control system is simple, the heat dissipation is convenient, the rectification effect is good, and the low-voltage system is convenient to use.
  • the portable emergency power supply provided by the embodiment has the functions of DC ice melting and emergency power supply, and greatly expands the scope of use, and is used for emergency power conservation during normal use, and is used for DC melting ice of distribution network lines during the glazing period; After the use of the area, it will greatly enhance the ability of the agricultural distribution network to withstand large-scale rain and snow freezing disasters; it has multi-channel regulation function, wide range of power supply and melting ice, simple control system, and good DC voltage performance. After adopting the intermediate frequency power generation, the rectification and inverter power supply mode greatly reduces the size and weight of the generator, and the emergency power supply and the ice melting are highly mobile.
  • the wire clamp is used for ice-melting access and three-phase short-circuit, the wiring is convenient, the melting ice efficiency is high, and the end adopts three-phase short-circuit grounding, which effectively prevents the danger of reverse power transmission when the distribution network line melts ice.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

一种便携式应急电源，包括中频发电机(1)、不控十二脉波整流部件(2)、串并联切换刀闸(3)、应急电源开关(4)、直流融冰开关(5)、逆变部件(6)、直流融冰接线装置(7)和融冰三相短接线(9)；其中，中频发电机(1)输出连接不控十二脉波整流部件(2)，不控十二脉波整流部件(2)连接串并联切换刀闸(3)，串并联切换刀闸(3)通过应急电源开关(4)连接逆变部件(6)，以实现供电功能；不控十二脉波整流部件(2)设置为对中频发电机(1)的输出电流进行整流，整流后的输出电流称为已整流电流；串并联切换刀闸(3)设置为调节中频发电机(1)的输出电压和已整流电流，以满足不同线路的融冰需求和供电时不同的功率需求。该便携式应急电源同时具备直流融冰和应急供电的功能，拓展了使用范围。

Description

便携式应急电源 技术领域
本公开属于电气工程技术领域，例如涉及一种便携式应急电源。
背景技术
2008年南方大范围雨雪冰冻灾害给电网带来了巨大的损失，配电网线路由于分布广泛，多处于微地形微气象区域，倒塔断线事故频发。研究开发简单高效的配电网融冰及发电装置是提升配网强度，确保可靠供电的关键。目前部分科研单位开发了基于中频调压整流的配网便携式融冰装置，在雨雪冰冻灾害中起到了一定的效果，但由于装置仅具备直流融冰功能，一年中只在低温天气持续的几天里使用，甚至连续几年均处于闲置状态。闲置状态下诸如发电机电瓶老化、缺电无法启动以及整流模块损坏等一系列问题经常导致融冰装置无法使用，同时融冰装置利用率低严重影响了便携式融冰装置的推广使用，覆盖面小，且便携式融冰装置本身融冰效率并不高，一次仅能融一到两级杆，当发生严重冰灾时并不能够有效遏制配网线路的倒杆断线。
发明内容
本公开提供一种便携式应急电源，该装置平时可以用作应急电源保电，配电网发生雨雪冰冻灾害时则用于配电线路融冰，提高装置利用率与覆盖面，有力支撑配电网线路安全运行。
一种便携式应急电源，包括中频发电机、不控十二脉波整流部件、串并联切换刀闸、应急电源开关、直流融冰开关、逆变部件、直流融冰接线装置、和融冰三相短接线；
其中，所述中频发电机输出连接所述不控十二脉波整流部件，所述不控十二脉波整流部件连接串并联切换刀闸，所述串并联切换刀闸通过所述应急电源开关连接所述逆变部件，以实现供电功能；
所述不控十二脉波整流部件设置为对所述中频发电机的输出电流进行整流，整流后的所述输出电流称为已整流电流；
所述串并联切换刀闸设置为调节中频发电机的输出电压和所述已整流电流，以满足不同线路的融冰需求和供电时不同的功率需求；
所述逆变部件设置为对所述输出电压进行逆变，以得到工频电压；
所述应急电源开关设置为控制所述串并联切换刀闸与所述逆变部件之间断开以及连接；
所述串并联切换刀闸还通过所述直流融冰开关连接所述直流融冰接线装置，所述直流融冰接线装置设置为与待融冰导线的第一端相连，所述待融冰导线第二端通过所述融冰三相短接线进行三相短接，以实现直流融冰功能；
所述直流融冰开关设置为控制所述串并联切换刀闸与所述直流融冰接线装置之间的连接以及断开，且与应急电源开关互相闭锁；
所述直流融冰接线装置设置为实现配网线路的直流融冰。
可选的，串并联切换刀闸包括第一并联刀闸、第二并联刀闸以及串联刀闸，第一并联刀闸与第二并联刀闸并联，所述串联刀闸的第一端与所述第一并联刀闸的第一端相连，且所述串联刀闸的第二端与所述第二并联刀闸的第一端相连。
可选的，直流融冰接线装置包括：第一正极接头、第二正极接头和负极接头；
所述待融冰导线包括第一待融冰导线和第二待融冰导线；
所述第一正极接头的第一端与第二正极接头的第一端连接，设置为接入直流融冰开关的正极，负极接头的第一端设置为接入融冰开关的负极；
第一正极接头的第二端悬空，所述第二正极接头的第二端与所述第一待融冰导线连接，所述负极接头的第二端与所述第二待融冰导线连接；或者第一正极接头的第二端与所述第一待融冰导线连接，所述第二正极接头的第二端悬空，所述负极接头的第二端与所述第二待融冰导线连接。
可选的，直流融冰接线装置包括：第一正极接头、第二正极接头和负极接头；
所述待融冰导线包括第一待融冰导线、第二待融冰导线以及第三待融冰导线；
所述第一正极接头的第一端与第二正极接头的第一端连接，设置为接入直流融冰开关的正极，负极接头的第一端设置为接入融冰开关的负极；
所述第二正极接头的第二端与所述第一待融冰导线连接，所述负极接头的第二端与所述第二待融冰导线连接，第一正极接头的第二端与所述第三待融冰导线连接。
可选的，直流融冰接线装置还包括融冰电缆和融冰线夹；
所述第一正极接头、第二正极接头和负极接头中的至少一个通过融冰电缆与融冰线夹连接，所述融冰线夹设置为与待融冰导线的第一端相接。
可选的，所述融冰短接线包括短接线夹和短接电缆，设置在待融冰导线的第二端，设置为使配网线路中的待融冰导线实现三相短接接地，以进行直流融冰。
本公开提供的便携式应急电源同时具备直流融冰与应急供电的功能，大大拓展了使用范围，平时用作应急保电，覆冰期用于配电网线路的直流融冰；使用范围广，具备大规模推广的潜力，大面积使用后将极大地提升农配网线路抵御大范围雨雪冰冻灾害的能力；具备多路调节功能，供电及融冰范围广，控制系统简捷，融冰电压直流性能好；采用中频发电后在整流、逆变的供电模式，极大地降低了发电机的尺寸及重量，两人手动即可搬运，应急供电及融冰机动性强；采用接线线夹进行融冰接入和三相短接，接线方便，融冰效率高，同时末端采取三相短接接地，有效防止了配网线路融冰时存在的反送电等危险。
附图概述
图1所示为本实施例中便携式应急电源的结构示意图；
图2所示为本实施例中串并联切换刀闸的结构示意图；
图3所示为本实施例中直流融冰接线装置7的结构示意图；
图4所示为本实施例中融冰三相短接线9的结构示意图。
图中标示为：
1-中频发电机，
2-不控十二脉波整流部件，
3-串并联切换刀闸，
4-应急电源开关，
5-直流融冰开关，
6-逆变部件，
7-直流融冰接线装置，
8-待融冰导线，
9-融冰三相短接线，
31-串联刀闸，
32-第一并联刀闸，
33-第二并联刀闸，
71-负极接头，
72-第一正极接头，
73-第二正极接头，
74-融冰电缆，
75-融冰线夹，
91-短接线夹，
92-短接电缆。
具体实施方式
便携式应急电源应用广泛，让便携式电源具备融冰能力，将极大地提高融冰部件的配置率，发挥应急保电功能的同时，有效支撑配电网在雨雪冰冻灾害中的安全性与供电可靠性。
图1所示为本实施例中便携式应急电源的结构示意图；图2所示为本实施例中串并联切换刀闸的结构示意图；图3所示为本实施例中直流融冰接线装置7的结构示意图；图4所示为本实施例中融冰三相短接线9的结构示意图。
参见图1所示，一种兼具直流融冰功能的便携式应急电源，该装置包括中频发电机1、不控十二脉波整流部件2、串并联切换刀闸3、应急电源开关4、直流融冰开关5、逆变部件6、直流融冰接线装置7和融冰三相短接线9。
其中，所述中频发电机1输出连接所述不控十二脉波整流部件2，所述不控十二脉波整流部件2连接串并联切换刀闸3，所述串并联切换刀闸3通过所述应急电源开关4连接所述逆变部件6，以实现供电功能；
所述不控十二脉波整流部件2设置为对所述中频发电机1的输出电流进行整流，整流后的所述输出电流称为已整流电流；
所述串并联切换刀闸3设置为调节中频发电机1的输出电压和所述已整流电流，以满足不同线路的融冰需求和供电时不同的功率需求；
所述逆变部件6设置为对已整流电流对应的所述输出电压进行逆变，以得到工频电压：
所述应急电源开关4设置为控制所述串并联切换刀闸3与所述逆变部件6之间断开以及连接；
所述串并联切换刀闸3还通过所述直流融冰开关5连接所述直流融冰接线装 置7，所述直流融冰接线装置7设置为与待融冰导线8的第一端相连，所述待融冰导线8第二端通过所述融冰三相短接线9进行三相短接，以实现直流融冰功能；
所述直流融冰开关7设置为控制所述串并联切换刀闸3与所述直流融冰接线装置7之间的连接以及断开，且与应急电源开关4互相闭锁；
所述直流融冰接线装置7设置为实现待融冰导线的直流融冰。
本实施例中频发电机1可以是采用市售TFDJ-12轻型发电机，尺寸为0.7m×0.7m×0.6m，重量为80kg，发电功率12kW，发电频率400Hz，输出电压范围12V～24V，自带电压电流显示功能；不控十二脉波整流部件2可以是采用XDJS-20型十二脉波整流器，额定电流500A，额定电压30V；串并联切换刀闸3可以是采用CK-20小型切换刀闸；应急电源开关4和融冰电源开关5采用电缆进行接线；逆变部件6可以是采用市售FLUKENB-9型逆变器，逆变功率9kW，自带电压显示功能，基本可满足所有小型应急场合供电需求；直流融冰接线装置7中接头可以是采用自制接头，具备测量融冰电流用的分流器，通流能力为500A，融冰电缆可以是采用JV-120型电缆，每根长30m，接线线夹每根长3m，每相采取两根对接，可满足所有配网线路的融冰接线需求；融冰三相短接线可以是采用与融冰线夹相同的配置，通过带接地钉的短接电缆接地。其中，所述中频发电机，用于产生三相中频电能的特种同步发电机。通常中频发电机的频率范围在工频以上，10000赫以下。
应急供电时，应急电源开关4以及融冰电源开关5断开，可以是由操作人员将应急电源开关4以及融冰电源开关5断开，通过调节中频发电机1电压和串并联切换刀闸3使直流输出达到逆变部件6额定电压，并关闭中频发电机1，合上应急电源开关4，融冰电源开关5继续处于开断状态，开启中频发电机1即可实现应急供电功能。
直流融冰时，根据融冰方案进行融冰接线即将直流融冰接线装置7接入图1所示的电路中，和三相短接接地即融冰三相短接线9第一端接入图1所示的电路中，第二端接地，并调节串并联刀闸3位置，将中频发电机1电压调至最低位置，合上融冰电源开关5，断开应急电源开关4，开启中频发电机1，调节电压至相应融冰电流，实施直流融冰，完成后通过直流融冰接线装置7进行换相融冰，直至三相融冰完全结束。融冰时电压输出最低为串并联刀闸3并联即串联刀闸31断开，第一并联刀闸32与第二并联刀闸33闭合时，输出电压最高为串并联刀闸3串联即串联刀闸31闭合，第一并联刀闸32与第二并联刀闸33断开时，输出电压计算如 下：
IDC＝1.25kUAC
UDC为直流融冰时输出电压；UAC为中频发电机1输出电压，中频发电机1输出电压的范围可以为12V-24V，公式中k为串联时系数，计算得出直流融冰时输出电压范围为15V-60V，根据多个农配网线路线型参数，可计算直流融冰范围。
最小融冰距离
Figure PCTCN2017094379-appb-000001
最大融冰距离
Figure PCTCN2017094379-appb-000002
其中Umin为最小输出直流电压15V，Umax为最大输出直流电压60V，Imin、Imax分别为一特定线型导线对应的最小融冰电流和最大融冰电流，R0为该线型导线单位长度电阻，2和1.5分别两相串联和两并一串时的电阻系数。根据公式及导线参数可计算该装置融冰距离范围如表1。其中，参见图3，待融冰导线8为三相导线，从上至下依次为上相导线、中相导线以及下相导线。两相串联可以是指将图3中第二正极接头73接上相导线，负极接头71接下相导线，上下两相导线串联，第一正极接头72悬空，即暂时不对中相导线进行融冰；可选的，两相串联还可以是指将图3中第一正极接头72接中相导线，负极接头71接下相导线，上下两相导线串联，第二正极接头73悬空，即暂时不对上相导线进行融冰；两并一串是指将图3中如图3中的下相导线，负极接头71接下相导线、第一正极接头72接中相导线、第二正极接头73接上相导线，其中71和第一正极接头72接在一起，实现上相导线与中相导线的并联，再与下相导线串联，仅针对下相导线进行融冰。
表1
导线线型 最大融冰距离(m) 最小融冰距离(m)
LGJ×35 273 34
LGJ×50 311 38
LGJ×70 347 45
LGJ×95 384 50
LGJ×120 406 49
LGJ×150 430 48
其中，上述融冰方案可以是指融冰前针对具体融冰线路制定的方案，包括 接线、融冰电压值以及预计融冰时间等内容
本实施例的便携式应急电源的工作原理是：该装置中频发电机1作为融冰及应急电源，装置采用中频发电，在保证功率及电压一定的情况下，极大地减小了发电机尺寸及重量，通过不控十二脉波整流部件2进行整理，可输出高质量的直流电压。不控十二脉波整流部件2的两路输出通过串并联切换刀闸3进行汇合，当所述串联刀闸31闭合时，不控十二脉波整流部件2的两路输出串联，电压最高，当所述第一并联刀闸32和第二并联刀闸33闭合时，不控十二脉波整流部件2的两路输出并联，电流最大。串并联切换刀闸3输出通过应急电源开关4接入到逆变部件6，对直流电压进行逆变，通过调节中频发电机1的输出电压，可实现输出220V或50Hz的直流电压，用于停电时或野外施工等情况下的应急供电。串并联切换刀闸3输出通过直流融冰开关5接入到直流融冰接线装置7，直流融冰接线装置7中第一正极接头72与第二正极接头73连接，同时接入直流融冰开关5的正极，负极接头71接入融冰开关5的负极，第一正极接头72、第二正极接头73与负极接头71每个接头通过融冰电缆74与融冰线夹75连接，融冰前将对应线夹接入待融冰导线8，在待融冰导线末端通过短接线夹91和短接电缆92实现三相短接接地，进行直流融冰。
本实施例中串并联切换刀闸3可实现高电压与大电流(即串联时最高电压可达60V，并联时最大电流可达400A，足够配电网导线融冰)的选择，满足不同线路的融冰需求和供电时不同的功率需求，第一并联刀闸32与第二并联刀闸33联动(即第一并联刀闸32和第二并联刀闸33同时断开或同时闭合)，同时与串联刀闸31闭锁(即第一并联刀闸32和第二并联刀闸33闭合时，串联刀闸31必须处于断开状态)，以防出现短路；通过应急电源开关4和直流融冰开关5实现直流融冰与应急供电直接的切换，两路开关互相闭锁；通过直流融冰接线装置7可实现两相导线同时融冰与一相导线融冰，采用第二正极接头73和负极接头71与两相导线连接，实现两相串联融冰，两相导线同时融冰，采用第二正极接头73、第一正极接头72和负极接头71与三相导线同时连接，实现两并一串融冰，只进行串联导线融冰。
可选的，本实施例采用中频发电技术作为电源，先整流，再对整流后的直流电压进行逆变，得到工频电压，在保证功率一定的情况下减小了应急电源的尺寸和重量。同时从中间直接取直流电压用于融冰，装置使用机动性强。
可选的，本实施例融冰时采用电缆与接线线夹接入待融冰导线和实现三相 短接，接线方便，融冰效率高，同时末端采取短接接地的方式，有效避免了农配网线路融冰时反送电的危险。
可选的，本实施例采用不控十二脉波整流部件作为中频发电机的整流器，装置控制系统简捷，散热方便，整流效果好，便于低压系统使用。
工业实用性
本实施例提供的便携式应急电源同时具备直流融冰与应急供电的功能，大大拓展了使用范围，平时用作应急保电，覆冰期用于配电网线路的直流融冰；使用范围广，大面积使用后将极大地提升农配网线路抵御大范围雨雪冰冻灾害的能力；具备多路调节功能，供电及融冰范围广，控制系统简捷，融冰电压直流性能好。采用中频发电后在整流、逆变的供电模式，极大地降低了发电机的尺寸及重量，应急供电及融冰机动性强。采用接线线夹进行融冰接入和三相短接，接线方便，融冰效率高，同时末端采取三相短接接地，有效防止了配网线路融冰时存在的反送电等危险。

Claims (6)

  1. 一种便携式应急电源，包括中频发电机、不控十二脉波整流部件、串并联切换刀闸、应急电源开关、直流融冰开关、逆变部件、直流融冰接线装置、和融冰三相短接线；
    其中，所述中频发电机输出连接所述不控十二脉波整流部件，所述不控十二脉波整流部件连接串并联切换刀闸，所述串并联切换刀闸通过所述应急电源开关连接所述逆变部件，以实现供电功能；
    所述不控十二脉波整流部件设置为对所述中频发电机的输出电流进行整流，整流后的所述输出电流称为已整流电流；
    所述串并联切换刀闸设置为调节中频发电机的输出电压和所述已整流电流，以满足不同线路的融冰需求和供电时不同的功率需求；
    所述逆变部件设置为对所述输出电压进行逆变，以得到工频电压；
    所述应急电源开关设置为控制所述串并联切换刀闸与所述逆变部件之间断开以及连接；
    所述串并联切换刀闸还通过所述直流融冰开关连接所述直流融冰接线装置，所述直流融冰接线装置设置为与待融冰导线的第一端相连，所述待融冰导线第二端通过所述融冰三相短接线进行三相短接，以实现直流融冰功能；
    所述直流融冰开关设置为控制所述串并联切换刀闸与所述直流融冰接线装置之间的连接以及断开，且与应急电源开关互相闭锁；
    所述直流融冰接线装置设置为实现待融冰导线的直流融冰。
  2. 根据权利要求1所述的便携式应急电源，其中，串并联切换刀闸包括第一并联刀闸、第二并联刀闸以及串联刀闸，第一并联刀闸与第二并联刀闸并联，所述串联刀闸的第一端与所述第一并联刀闸的第一端相连，且所述串联刀闸的第二端与所述第二并联刀闸的第一端相连。
  3. 根据权利要求1或2所述的便携式应急电源，其中，直流融冰接线装置包括：第一正极接头、第二正极接头和负极接头；
    所述待融冰导线包括第一待融冰导线和第二待融冰导线；
    所述第一正极接头的第一端与第二正极接头的第一端连接，设置为接入直流融冰开关的正极，负极接头的第一端设置为接入融冰开关的负极；
    第一正极接头的第二端悬空，所述第二正极接头的第二端与所述第一待融冰导线连接，所述负极接头的第二端与所述第二待融冰导线连接；或者第一正极接头的第二端与所述第一待融冰导线连接，所述第二正极接头的第二端悬空， 所述负极接头的第二端与所述第二待融冰导线连接。
  4. 根据权利要求1或2所述的便携式应急电源，其中，直流融冰接线装置包括：第一正极接头、第二正极接头和负极接头；
    所述待融冰导线包括第一待融冰导线、第二待融冰导线以及第三待融冰导线；
    所述第一正极接头的第一端与第二正极接头的第一端连接，设置为接入直流融冰开关的正极，负极接头的第一端设置为接入融冰开关的负极；
    所述第二正极接头的第二端与所述第一待融冰导线连接，所述负极接头的第二端与所述第二待融冰导线连接，第一正极接头的第二端与所述第三待融冰导线连接。
  5. 根据权利要求3或4所述的便携式应急电源，其中，直流融冰接线装置还包括融冰电缆和融冰线夹；
    所述第一正极接头、第二正极接头和负极接头中的至少一个通过融冰电缆与融冰线夹连接，所述融冰线夹设置为与待融冰导线的第一端相接。
  6. 根据权利要求5所述的便携式应急电源，其中，所述融冰短接线包括短接线夹和短接电缆，设置在待融冰导线的第二端，设置为使配网线路中的待融冰导线实现三相短接接地，以进行直流融冰。
PCT/CN2017/094379 2016-07-25 2017-07-25 便携式应急电源 Ceased WO2018019240A1 (zh)

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