CN203056590U - Dynamic reactive power compensation device for traction power supply system - Google Patents
Dynamic reactive power compensation device for traction power supply system Download PDFInfo
- Publication number
- CN203056590U CN203056590U CN201220725390.5U CN201220725390U CN203056590U CN 203056590 U CN203056590 U CN 203056590U CN 201220725390 U CN201220725390 U CN 201220725390U CN 203056590 U CN203056590 U CN 203056590U
- Authority
- CN
- China
- Prior art keywords
- parallel
- reactive power
- supply system
- power supply
- dynamic reactive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000001939 inductive effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
技术领域technical field
本实用新型涉及电气化铁路牵引供电系统,特别涉及一种用于牵引供电系统的动态无功功率补偿装置。The utility model relates to an electrified railway traction power supply system, in particular to a dynamic reactive power compensation device for the traction power supply system.
背景技术Background technique
山区电气化铁路,线路坡度通常较大,牵引负荷波动较为剧烈,特别是在开通初期,实际运量与设计运量存在很大差距,造成供电臂电流较小,牵引变压器容量利用率非常低,若牵引供电系统采用传统的固定无功功率补偿装置,牵引供电系统无功欠补偿或过补偿的情况难以避免。For electrified railways in mountainous areas, the slope of the line is usually relatively large, and the traction load fluctuates violently. Especially in the initial stage of opening, there is a large gap between the actual traffic volume and the designed traffic volume, resulting in a small current in the power supply arm and a very low utilization rate of the traction transformer capacity. The traction power supply system adopts the traditional fixed reactive power compensation device, and the situation of reactive power under-compensation or over-compensation in the traction power supply system is unavoidable.
为了解决功率因数问题,动态无功功率补偿装置逐步在牵引供电系统得到推广和应用,目前使用的方式主要有:晶闸管控制电抗器(TCR)、可控磁饱和电抗器、有级调压式高压动态无功补偿系统(SAVDC)、无功功率发生器(SVG)等。In order to solve the power factor problem, the dynamic reactive power compensation device has been gradually promoted and applied in the traction power supply system. Dynamic reactive power compensation system (SAVDC), reactive power generator (SVG), etc.
经过现场实际运行的证明和考验,各种方式均存在一定问题和缺陷。晶闸管控制电抗器(TCR)方式由于铁路牵引负荷变化较为剧烈、谐波含量较高等,晶闸管运行工况较为恶劣,经常出现损坏,导致系统无法正常运行,且装置存在轻载和空载时的损耗较大的问题;可控磁饱和电抗器方式由于动态调节电抗器的磁饱和度,发热和噪声较大,且装置轻载和空载时的损耗较大;有级调压式高压动态无功补偿系统(SAVDC)方式由于可控并联电容支路无法工作于零电压状态,空载和轻载时,产生容性无功倒送电网,对于负荷较轻线路,功率因数无法达到电力部门考核要求;无功功率发生器(SVG)方式系统较为复杂、可靠性较低、价格较高,在电气化铁路缺乏较为成熟的运行经验。After the proof and test of the actual operation on site, there are certain problems and defects in various methods. Thyristor-controlled reactor (TCR) mode is due to the drastic changes in railway traction load and high harmonic content, etc., the operating conditions of thyristors are relatively harsh, and damage often occurs, resulting in the system not operating normally, and the device has loss at light load and no load Larger problems; due to the dynamic adjustment of the magnetic saturation of the reactor in the controllable magnetic saturation reactor mode, the heat and noise are relatively large, and the device has a large loss when the device is light-loaded and no-load; there is a step-by-step voltage regulation high-voltage dynamic reactive In the compensation system (SAVDC) mode, since the controllable parallel capacitor branch cannot work in the zero voltage state, capacitive reactive power will be sent back to the grid under no-load and light load conditions. For lines with light loads, the power factor cannot meet the assessment requirements of the power department. ; The reactive power generator (SVG) system is relatively complex, with low reliability and high price, and lacks relatively mature operating experience in electrified railways.
实用新型内容Utility model content
本实用新型所要解决的技术问题是提供一种用于牵引供电系统的动态无功功率补偿装置,以实现牵引供电系统的动态无功功率平衡。The technical problem to be solved by the utility model is to provide a dynamic reactive power compensation device for the traction power supply system, so as to realize the dynamic reactive power balance of the traction power supply system.
本实用新型解决其技术问题所采用的技术方案如下:The technical solution adopted by the utility model to solve its technical problems is as follows:
本实用新型的牵引供电系统的动态无功功率补偿装置,其特征是:该装置通过室内真空断路器直接挂接在所内27.5kV母线上,与真空断路器间设置手动隔离开关;自耦调压变压器内设并联电抗器,形成可调并联电抗器支路;第一有载调压开关和第二有载调压开关设置于自耦调压变压器内;由并联电容及电抗器构成并联电容补偿回路;电压互感器并联于电容支路上,构成并联电容支路的差压保护回路;第一电流互感器、第二电流互感器串联于并联电容支路两侧,构成差流保护回路;设置第一避雷器、第二避雷器并联于自耦调压变压器两侧,构成过电压保护回路。The dynamic reactive power compensation device of the traction power supply system of the utility model is characterized in that: the device is directly connected to the 27.5kV bus in the institute through the indoor vacuum circuit breaker, and a manual isolating switch is set between the vacuum circuit breaker; self-coupling voltage regulation The transformer is equipped with a shunt reactor to form an adjustable shunt reactor branch; the first on-load tap changer and the second on-load tap changer are set in the auto-coupling tap changer; the shunt capacitor and the reactor constitute the shunt capacitor compensation circuit; the voltage transformer is connected in parallel on the capacitor branch to form a differential pressure protection circuit for the parallel capacitor branch; the first current transformer and the second current transformer are connected in series on both sides of the parallel capacitor branch to form a differential current protection circuit; A lightning arrester and a second lightning arrester are connected in parallel on both sides of the auto-transformer to form an overvoltage protection circuit.
本实用新型的有益效果是,采用一种特殊的自耦调压变压器,设置两套有载调压分接开关,一套控制并联电容器的无功功率输出,另一套控制并联电抗器的无功功率输出,通过电感和电容支路的动态协调配合,实现牵引供电系统的动态无功功率平衡;由于电感支路主要用于抵消空载或轻载时过多的容性无功功率,容量较小,因此将电抗器置于自耦调压变压器油箱内,利用变压器油解决电抗器的绝缘和散热问题,实现紧凑化设计。The beneficial effect of the utility model is that a special auto-coupling voltage-regulating transformer is adopted, and two sets of on-load tap-changers are set, one set controls the reactive power output of the shunt capacitor, and the other set controls the reactive power output of the shunt reactor. Through the dynamic coordination and cooperation of the inductor and capacitor branches, the dynamic reactive power balance of the traction power supply system is realized; since the inductor branch is mainly used to offset the excessive capacitive reactive power at no-load or light load, the capacity Therefore, the reactor is placed in the oil tank of the autotransformer, and the transformer oil is used to solve the insulation and heat dissipation problems of the reactor to achieve a compact design.
附图说明Description of drawings
本说明书包括如下两幅附图:This manual includes the following two drawings:
图1是本实用新型用于牵引供电系统的动态无功功率补偿装置的结构示意图;Fig. 1 is a schematic structural view of the dynamic reactive power compensation device of the utility model for traction power supply system;
图2是本实用新型用于牵引供电系统的动态无功功率补偿装置中自耦调压变压器的内部接线示意图。Fig. 2 is a schematic diagram of the internal wiring of the auto-coupling voltage regulating transformer in the dynamic reactive power compensation device used in the traction power supply system of the present invention.
图中示出部件名称及所对应的标记:所内27.5kV母线α、室内真空断路器1QF、手动隔离开关1QS、自耦调压变压器1TY、并联电抗器DK、第一有载调压开关K1、第二有载调压开关K2、并联电容1C、电抗器1L、电压互感器1TV、第一电流互感器2TA、第二电流互感器4TA、第一避雷器1F、第二避雷器2F。The figure shows the names of the components and the corresponding marks: 27.5kV bus α in the institute, indoor vacuum circuit breaker 1QF, manual isolating switch 1QS, autotransformer 1TY, shunt reactor DK, first on-load tap changer K1, The second on-load tap changer K2, the shunt capacitor 1C, the reactor 1L, the voltage transformer 1TV, the first current transformer 2TA, the second current transformer 4TA, the first lightning arrester 1F, and the
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
参照图1、图2,本实用新型的牵引供电系统的动态无功功率补偿装置,其特征是:该装置通过室内真空断路器1QF直接挂接在所内27.5kV母线α上,与真空断路器间设置手动隔离开关1QS;自耦调压变压器1TY内设并联电抗器DK,形成可调并联电抗器支路;第一有载调压开关K1和第二有载调压开关K2设置于自耦调压变压器1TY内;由并联电容1C及电抗器1L构成并联电容补偿回路;电压互感器1TV并联于电容支路上,构成并联电容支路的差压保护回路;第一电流互感器2TA、第二电流互感器4TA串联于并联电容支路两侧,构成差流保护回路;设置第一避雷器1F、第二避雷器2F并联于自耦调压变压器1TY两侧,构成过电压保护回路。所述并联电容1C通常采用4串N并类型电容。Referring to Fig. 1 and Fig. 2, the dynamic reactive power compensation device of the traction power supply system of the present utility model is characterized in that the device is directly connected to the 27.5kV bus α in the institute through the indoor vacuum circuit breaker 1QF, and is connected to the vacuum circuit breaker. Set the manual isolating switch 1QS; the autotransformer 1TY is equipped with a shunt reactor DK to form an adjustable shunt reactor branch; the first on-load tap changer K1 and the second on-load tap changer K2 are set in the Inside voltage transformer 1TY; Parallel capacitor 1C and reactor 1L constitute a parallel capacitor compensation circuit; Voltage transformer 1TV is connected in parallel to the capacitor branch to form a differential pressure protection circuit for the parallel capacitor branch; the first current transformer 2TA, the second current The transformer 4TA is connected in series on both sides of the parallel capacitor branch to form a differential current protection circuit; the first lightning arrester 1F and the
本实用新型利用传统的有级调压式高压动态无功补偿系统(SAVDC)装置运行可靠、价格较低、运行能耗较低等特点,在其基础上进行了改进,将自耦调压变压器增加了一套有载调压分接开关,同时增设并联电抗器,形成可调并联电抗器支路,空载或轻载时,通过调节可调并联电抗器感性无功功率的输出,补充过多的容性无功,保证功率因数达到电力部门考核要求。The utility model utilizes the characteristics of the traditional step-regulated high-voltage dynamic reactive power compensation system (SAVDC) device, which is reliable in operation, low in price, and low in energy consumption, and improves on the basis of it. The self-coupling voltage regulating transformer A set of on-load tap changer is added, and a shunt reactor is added at the same time to form an adjustable shunt reactor branch. When there is no load or light load, the output of the adjustable shunt reactor inductive reactive power is adjusted to supplement the overvoltage. A large amount of capacitive reactive power ensures that the power factor meets the assessment requirements of the power department.
本实用新型为用于牵引供电系统的动态无功功率补偿装置,该装置通过室内真空断路器直接挂接在所内27.5kV母线上,根据电网系统的无功变化,通过动态调节电感和电容支路的工作电压,调整两支路输出的感性和容性无功,实现动态无功补偿。The utility model is a dynamic reactive power compensation device used in a traction power supply system. The device is directly connected to the 27.5kV busbar in the institute through an indoor vacuum circuit breaker. According to the reactive power change of the power grid system, the inductance and capacitance branches are dynamically adjusted. working voltage, adjust the inductive and capacitive reactive power output by the two branches, and realize dynamic reactive power compensation.
该装置采用技术成熟的有载调压自耦变压器、电容器、电抗器等设备,运行稳定可靠、价格较低。正常负荷工况下,仅电容器支路输出容性无功,补偿牵引负荷的感性无功功率,电抗器支路基本不输出感性无功;空载或轻载工况下,电容器支路工作于较低级位,输出较低容性无功,电抗器支路输出较低感性无功,抵消容性支路输出的容性无功,这样,保证了各种工况下无功功率的平衡,同时,也保证了装置在各种工况下较低的损耗。该装置采用特殊设计的自耦调压变压器,自耦调压变压器采用有载调压方式,设置两套有载调压分接开关;一套有载调压分接开关控制并联电容器的无功功率输出,并联电容器主要用于补偿机车负荷的感性无功功率;另一套有载调压分接开关控制并联电抗器的无功功率输出,并联电抗器主要用于抵消空载或轻载时过多的容性无功功率。由计算机构成的高压无功补偿自动控制装置,通过实时采集电网的电压、电流、功率因数,分析负荷的变化趋势、系统无功功率、系统谐波含量、电压波动情况等,利用模糊控制技术调节有载分接开关,实现动态优化补偿,并达到无功补偿容量随系统负荷无功容量自动跟踪调节的目的。The device adopts on-load voltage regulating autotransformer, capacitor, reactor and other equipment with mature technology, which is stable and reliable in operation and low in price. Under normal load conditions, only the capacitor branch outputs capacitive reactive power to compensate the inductive reactive power of the traction load, and the reactor branch basically does not output inductive reactive power; under no-load or light-load conditions, the capacitor branch works at The lower position, the output of lower capacitive reactive power, the reactor branch output lower inductive reactive power, offset the capacitive reactive power output of the capacitive branch circuit, thus ensuring the balance of reactive power under various working conditions , At the same time, it also ensures the lower loss of the device under various working conditions. The device adopts a specially designed auto-coupling voltage-regulating transformer. The auto-coupling voltage-regulating transformer adopts the on-load voltage regulation mode, and two sets of on-load voltage-regulating tap-changers are set; one set of on-load voltage-regulating tap-changers controls the reactive power of parallel capacitors. For power output, the shunt capacitor is mainly used to compensate the inductive reactive power of the locomotive load; another set of on-load tap changer controls the reactive power output of the shunt reactor, which is mainly used to offset the no-load or light-load Excessive capacitive reactive power. The high-voltage reactive power compensation automatic control device composed of a computer collects the voltage, current and power factor of the power grid in real time, analyzes the change trend of the load, system reactive power, system harmonic content, voltage fluctuation, etc., and uses fuzzy control technology to adjust The on-load tap-changer realizes dynamic optimization compensation and achieves the purpose of automatic tracking and adjustment of reactive power compensation capacity along with system load reactive capacity.
以上所述只是用图解说明本实用新型用于牵引供电系统的动态无功功率补偿装置的一些原理,并非是要将本实用新型局限在所示和所述的具体结构和适用范围内,故凡是所有可能被利用的相应修改以及等同物,均属于本实用新型所申请的专利范围。The above is just to illustrate some principles of the utility model for the dynamic reactive power compensation device of the traction power supply system, not to limit the utility model to the specific structure and scope of application shown and described, so any All corresponding modifications and equivalents that may be utilized belong to the patent scope of the utility model application.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220725390.5U CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for traction power supply system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220725390.5U CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for traction power supply system |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203056590U true CN203056590U (en) | 2013-07-10 |
Family
ID=48739510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201220725390.5U Expired - Lifetime CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for traction power supply system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN203056590U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106208105A (en) * | 2016-08-29 | 2016-12-07 | 浙江开关厂有限公司 | A kind of high-pressure reactive compensation device |
CN113036775A (en) * | 2021-02-25 | 2021-06-25 | 杭州银湖电气设备有限公司 | Structure based on magnetic control reactor type hybrid dynamic compensation and control method |
CN113022602A (en) * | 2021-03-30 | 2021-06-25 | 中车青岛四方车辆研究所有限公司 | Traction power compensation method and device based on network system |
CN116754883A (en) * | 2023-08-22 | 2023-09-15 | 山东华天电气有限公司 | Multifunctional detection equipment and detection method for reactive power compensation device |
-
2012
- 2012-12-25 CN CN201220725390.5U patent/CN203056590U/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106208105A (en) * | 2016-08-29 | 2016-12-07 | 浙江开关厂有限公司 | A kind of high-pressure reactive compensation device |
CN106208105B (en) * | 2016-08-29 | 2019-06-28 | 浙江开关厂有限公司 | A kind of high-pressure reactive compensation device |
CN113036775A (en) * | 2021-02-25 | 2021-06-25 | 杭州银湖电气设备有限公司 | Structure based on magnetic control reactor type hybrid dynamic compensation and control method |
CN113022602A (en) * | 2021-03-30 | 2021-06-25 | 中车青岛四方车辆研究所有限公司 | Traction power compensation method and device based on network system |
CN113022602B (en) * | 2021-03-30 | 2022-06-21 | 中车青岛四方车辆研究所有限公司 | Traction power compensation method and device based on network system |
CN116754883A (en) * | 2023-08-22 | 2023-09-15 | 山东华天电气有限公司 | Multifunctional detection equipment and detection method for reactive power compensation device |
CN116754883B (en) * | 2023-08-22 | 2023-11-24 | 山东华天电气有限公司 | Multifunctional detection equipment and detection method for reactive power compensation device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104494467B (en) | Electric railway V/v traction substation tidal current controller | |
CN101882788B (en) | Method and device for improving supply voltage at tail end of long supply arm of heavy haul railway | |
CN107910877B (en) | A Shunt Capacitor Switching Control Method During High Power Fluctuation of Sending-end Converter Station | |
CN203056590U (en) | Dynamic reactive power compensation device for traction power supply system | |
CN107834568A (en) | Dynamic compensation method and dynamic compensation generating means | |
CN203774792U (en) | High speed railway power quality and traction network voltage integration compensation system | |
CN2533603Y (en) | Electric power filtering and dynamic reactive compensation device | |
CN203632254U (en) | Automatic reactive compensation intelligent power distribution transformer | |
CN201181625Y (en) | Iron core reactor with adjustable reactance | |
CN205911749U (en) | Control of power quality device and have control of power quality's comprehensive block terminal | |
CN104333001B (en) | Distributed series-coupled type power flow controller | |
CN102593842A (en) | Distributive flexible reactive compensation configuration method of provincial power grid | |
CN109921432A (en) | A comprehensive reactive power voltage regulation and compensation device for distribution network for terminal concentrated load | |
CN103731011B (en) | A kind of highly reliable constant current for highway remote power-feeding turns constant-voltage equipment | |
CN206673592U (en) | A kind of comprehensive compensation type alternating current steady voltage plug | |
CN201797318U (en) | Reactance Adjustable Reactive Power Compensator | |
CN204681098U (en) | A kind of novel dynamic voltage adjustment reactive power compensation topology | |
CN214958712U (en) | Active comprehensive voltage regulating system based on 10kV series compensation | |
CN202488385U (en) | Three-phase AC high-power motor soft start compensation device | |
CN210137183U (en) | Power transmission system | |
WO2012126271A1 (en) | Electrified railway traction substation reactive power compensation apparatus | |
CN201975797U (en) | Magnetic valve type controllable reactor excitation control device | |
CN202145572U (en) | Turn adjusting controllable reactor | |
CN102074958B (en) | Thyristor valve controlled type controllable paralleling reactor device configured with parallel valve branches | |
CN201821114U (en) | Automatic reactive power compensation device for voltage regulating substation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
CX01 | Expiry of patent term |