CN203056590U - Dynamic reactive power compensation device for tractive power supply system - Google Patents
Dynamic reactive power compensation device for tractive power supply system Download PDFInfo
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- CN203056590U CN203056590U CN 201220725390 CN201220725390U CN203056590U CN 203056590 U CN203056590 U CN 203056590U CN 201220725390 CN201220725390 CN 201220725390 CN 201220725390 U CN201220725390 U CN 201220725390U CN 203056590 U CN203056590 U CN 203056590U
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- 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
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Abstract
The utility model provides a dynamic reactive power compensation device for a tractive power supply system. The dynamic reactive power compensation device for the tractive power supply system is used for realizing dynamic reactive power balance of the tractive power supply system. The dynamic reactive power compensation device for the tractive power supply system is hooked on a 27.5kV bus in a station directly through an indoor vacuum circuit breaker. A manual isolating switch is arranged between the dynamic reactive power compensation device for the tractive power supply system and the vacuum circuit breaker. A parallel reactor is arranged in a self-coupling voltage-adjusting transformer, so that an adjustable parallel reactor branch circuit is formed. Two on-load voltage-adjusting switches are arranged in the self-coupling voltage-adjusting transformer. A parallel capacitor compensation return circuit is composed of a parallel capacitor and a reactor. A voltage transformer is connected to the capacitor branch circuit in parallel, so that a differential voltage protection return circuit of the parallel capacitor branch circuit is formed. Two current transformers are connected to two sides of the parallel capacitor branch circuit in series, so that a differential current protection return circuit is formed. Two lightning arresters are connected to two sides of the self-coupling voltage-adjusting transformer in parallel, so that an over-voltage protection return circuit is formed.
Description
Technical field
The utility model relates to electric railway traction power supply system, particularly a kind of dynamic reactive power compensation equipment for tractive power supply system.
Background technology
The mountain area electric railway, line slope is bigger usually, the traction load fluctuation is comparatively violent, particularly at the initial stage of opening, there is very big gap in actual freight volume with the design freight volume, causes the supply arm electric current less, and the traction transformer capacity utilance is very low, if tractive power supply system adopts traditional fixedly reactive power compensation device, the situation of the idle undercompensation of tractive power supply system or overcompensation is difficult to avoid.
In order to solve the power factor problem, dynamic reactive power compensation equipment progressively obtains promotion and application at tractive power supply system, and at present the mode of using mainly contains: thyristor-controlled reactor (TCR), controlled magnetic saturation reactor, a grade pressure-adjusting type high pressure dynamic passive compensation system (SAVDC), reactive power generator (SVG) etc. are arranged.
Through proof and the test of on-the-spot actual motion, variety of way all exists certain problem and defective.Thyristor-controlled reactor (TCR) mode is because the rail traction load variations is comparatively violent, harmonic content is more high, the thyristor operating condition is comparatively abominable, often occur damaging, cause system normally to move, and the loss bigger problem of device when having underloading and zero load; Controlled magnetic saturation reactor mode is because the magnetic saturation of dynamic adjustments reactor, and heating and noise are bigger, and the loss when device underloading and zero load is bigger; Controlled shunt capacitance branch road grade pressure-adjusting type high pressure dynamic passive compensation system (SAVDC) mode arranged owing to can't work in zero-voltage state, when zero load and underloading, produce capacitive reactive power and fall pushing electric network, for the light circuit of load, power factor can't reach power department examination requirement; Reactive power generator (SVG) mode system is comparatively complicated, reliability is lower, price is higher, lacks comparatively ripe operating experience in electric railway.
The utility model content
Technical problem to be solved in the utility model provides a kind of dynamic reactive power compensation equipment for tractive power supply system, to realize the dynamic reactive power balance of tractive power supply system.
The technical scheme that its technical problem that solves the utility model adopts is as follows:
The dynamic reactive power compensation equipment of tractive power supply system of the present utility model is characterized in that: this device directly is articulated on the interior 27.5kV bus of institute by indoor vacuum circuit-breaker, and manual isolating switch is set between vacuum circuit-breaker; Establish shunt reactor in the variac, form adjustable shunt reactor branch road; First on-load voltage regulating switch and second on-load voltage regulating switch are arranged in the variac; Constitute the parallel capacitive compensation loop by shunt capacitance and reactor; Voltage transformer is parallel on the capacitive branch, constitutes the differential pressure protection loop of shunt capacitance branch road; First current transformer, second current transformer are series at shunt capacitance branch road both sides, constitute difference stream protection loop; First lightning arrester is set, second lightning arrester is parallel to the variac both sides, constitutes the overvoltage protection loop.
The beneficial effects of the utility model are, adopt a kind of special variac, two cover on-load voltage regulation shunting switchs are set, the reactive power output of one cover control shunt capacitor, the reactive power output of another set of control shunt reactor, dynamic coordinate by inductance and capacitive branch cooperates, and realizes the dynamic reactive power balance of tractive power supply system; Because inductive branch too much capacitive reactive power when being mainly used in offsetting zero load or underloading, capacity is less, therefore reactor is placed in the variac fuel tank, utilizes transformer oil to solve insulation and the heat dissipation problem of reactor, realizes the densification design.
Description of drawings
This specification comprises following two width of cloth accompanying drawings:
Fig. 1 is the structural representation that the utility model is used for the dynamic reactive power compensation equipment of tractive power supply system;
Fig. 2 is the back panel wiring schematic diagram that the utility model is used for the dynamic reactive power compensation equipment variac of tractive power supply system.
Component names shown in the figure and corresponding mark: 27.5kV bus α, indoor vacuum circuit-breaker 1QF, manual isolating switch 1QS, variac 1TY, shunt reactor DK, the first on-load voltage regulating switch K1, the second on-load voltage regulating switch K2, shunt capacitance 1C, reactor 1L, voltage transformer 1TV, the first current transformer 2TA, the second current transformer 4TA, the first lightning arrester 1F, the second lightning arrester 2F in the institute.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, Fig. 2, the dynamic reactive power compensation equipment of tractive power supply system of the present utility model, it is characterized in that: this device directly is articulated on the interior 27.5kV bus α of institute by indoor vacuum circuit-breaker 1QF, and manual isolating switch 1QS is set between vacuum circuit-breaker; Establish shunt reactor DK in the variac 1TY, form adjustable shunt reactor branch road; The first on-load voltage regulating switch K1 and the second on-load voltage regulating switch K2 are arranged in the variac 1TY; Constitute the parallel capacitive compensation loop by shunt capacitance 1C and reactor 1L; Voltage transformer 1TV is parallel on the capacitive branch, constitutes the differential pressure protection loop of shunt capacitance branch road; The first current transformer 2TA, the second current transformer 4TA are series at shunt capacitance branch road both sides, constitute difference stream protection loop; The first lightning arrester 1F is set, the second lightning arrester 2F is parallel to variac 1TY both sides, constitutes the overvoltage protection loop.Described shunt capacitance 1C adopts 4 string N and type electric capacity usually.
The utility model utilizes traditional characteristics such as grade pressure-adjusting type high pressure dynamic passive compensation system (SAVDC) device is reliable, price is lower, operation energy consumption is lower that have, improve on its basis, variac has been increased by a cover on-load voltage regulation shunting switch, set up shunt reactor simultaneously, form adjustable shunt reactor branch road, when zero load or underloading, by regulating the output of adjustable shunt reactor lagging reactive power, replenish too much capacitive reactive power, the guaranteed output factor reaches power department examination requirement.
The utility model is for being used for the dynamic reactive power compensation equipment of tractive power supply system, this device directly is articulated on the interior 27.5kV bus of institute by indoor vacuum circuit-breaker, idle variation according to network system, operating voltage by dynamic adjustments inductance and capacitive branch, adjust perception and the capacitive reactive power of the output of two branch roads, realize dynamic passive compensation.
This device adopts equipment such as the on-load voltage regulation autotransformer, capacitor, reactor of technology maturation, and stable and reliable operation, price are lower.Under the normal duty operating mode, only the capacitor branch road is exported capacitive reactive power, the lagging reactive power of compensation traction load, and it is idle that the reactor branch road is not exported perception substantially; Under zero load or the light duty, the capacitor branch road works in low level, the low capacitive reactive power of output, the low perception of reactor branch road output is idle, offset the capacitive reactive power of capacitive branch output, like this, guaranteed reactive power balance under the various operating modes, simultaneously, also guaranteed to install loss lower under various operating modes.This device adopts the variac of particular design, and variac adopts the on-load voltage regulation mode, and two cover on-load voltage regulation shunting switchs are set; The reactive power output of one cover on-load voltage regulation shunting switch control shunt capacitor, shunt capacitor is mainly used in compensating the lagging reactive power of locomotive load; The reactive power output of another set of on-load tap changer control shunt reactor, too much capacitive reactive power when shunt reactor is mainly used in offsetting zero load or underloading.The high-pressure reactive compensation automatic control equipment that is constituted by computer, voltage, electric current, power factor by real-time collection electrical network, the variation tendency of analysis load, system's reactive power, system harmonics content, voltage fluctuation situation etc., utilize fuzzy control technology to regulate on load tap changer, the compensation of realization dynamic optimization, and reach the purpose that reactive compensation capacity is regulated from motion tracking with the system loading reactive capability.
The above the utility model that just explains through diagrams is used for some principles of the dynamic reactive power compensation equipment of tractive power supply system, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (2)
1. the dynamic reactive power compensation equipment of tractive power supply system is characterized in that: this device directly is articulated in the institute on the 27.5kV bus (α) by indoor vacuum circuit-breaker (1QF), and manual isolating switch (1QS) is set between vacuum circuit-breaker; Establish shunt reactor (DK) in the variac (1TY), form adjustable shunt reactor branch road; First on-load voltage regulating switch (K1) and second on-load voltage regulating switch (K2) are arranged in the variac (1TY); Constitute the parallel capacitive compensation loop by shunt capacitance (1C) and reactor (1L); Voltage transformer (1TV) is parallel on the capacitive branch, constitutes the differential pressure protection loop of shunt capacitance branch road; First current transformer (2TA), second current transformer (4TA) are series at shunt capacitance branch road both sides, constitute difference stream protection loop; First lightning arrester (1F) is set, second lightning arrester (2F) is parallel to variac (1TY) both sides, constitutes the overvoltage protection loop.
2. the dynamic reactive power compensation equipment of tractive power supply system as claimed in claim 1 is characterized in that: described shunt capacitance (1C) employing 4 string N and type electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725390 CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for tractive power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725390 CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for tractive power supply system |
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| Publication Number | Publication Date |
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| CN203056590U true CN203056590U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220725390 Expired - Lifetime CN203056590U (en) | 2012-12-25 | 2012-12-25 | Dynamic reactive power compensation device for tractive power supply system |
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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 CN 201220725390 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
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| CX01 | Expiry of patent term |