CN109066720A - A kind of transmission line of electricity capacitor string benefit cabinet - Google Patents
A kind of transmission line of electricity capacitor string benefit cabinet Download PDFInfo
- Publication number
- CN109066720A CN109066720A CN201811133421.6A CN201811133421A CN109066720A CN 109066720 A CN109066720 A CN 109066720A CN 201811133421 A CN201811133421 A CN 201811133421A CN 109066720 A CN109066720 A CN 109066720A
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- CN
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- Prior art keywords
- string
- branch
- switch
- capacitor
- compensation
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
-
- 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
Abstract
The invention belongs to technical field of electric equipment, especially a kind of transmission line of electricity capacitor string mends cabinet, including cabinet body and it is arranged in the intracorporal compensation circuit of cabinet, setting positioning slide and the positioning column being slidably arranged in positioning slide in the cabinet body, the positioning slide includes the horizontal slide rail and longitudinal slide rail for intersecting connection setting, and threaded hole is arranged in the positioning column.Positioning slide and the positioning column being slidably arranged in positioning slide arranged in a crossed manner are arranged by this in cabinet body by the present invention, realize the positioning of the different type component of different location.
Description
Technical field
The invention belongs to technical field of electric equipment, especially a kind of transmission line of electricity capacitor string mends cabinet.
Background technique
With sustained and rapid development of economy, demand of the national economy to quantity of electricity is also growing at top speed.10kV rural power grids
And part medium voltage distribution network, in the small region of the density of population, electric load is more dispersed and fluctuation is big, confession radial over long distances
The case where distribution, is commonplace, and route is longer, and induction reactance caused by route is bigger, in the case where electric current is certain, route end
The voltage at end is lower；The load or burden without work of line transmission is bigger, and the voltage of line end is also lower.Thus bring load end
Quality of voltage problem it is serious, especially the heavy load equipments start and stop such as high capacity motor when caused by voltage fluctuation and heavy load it is long
The steady stability nargin and low-frequency oscillation problem of distance transmission of electricity are particularly pertinent.
This is solved the problems, such as at present, mostly uses shunt compensation or series compensation measure, wherein parallel capacitive compensation is logical
Raising power factor (PF) is crossed to improve quality of voltage, but power supply side bus voltage can only at most be increased to 1.1 times of voltage rating, only
Suitable for centralized compensation, line voltage distribution distribution problem not can solve, thus the compensation effect of parallel capacitive compensation is extremely limited.
And Series Compensation can play a role without external control or dispatcher's operation, flow through the electricity of capacitor and line inductance
Flow identical, capacitance voltage is exactly the opposite with inductive drop, can offset each other, and response speed is controllable and is faster than shunt capacitance
Device；Typically for same voltage change, required series capacitor reactive power rated value is specified much smaller than shunt capacitor
Value；Series capacitor is directly proportional to current squaring to the contribution of the reactive power of system, so, its contribution is idle when load maximum
At most.Shunt capacitor and is accompanied by low-voltage then on the contrary, its contribution is minimum when load maximum mostly.Although using
Though series compensation device effect is good, and because technology is complicated, expensive, bulky, cannot widely promote and apply.Cause
This, development operation control is simple, cheap, small in size, easy for installation, is suitable for the high-speed switch type string of 10kV power grid
Join compensation device, there is very important realistic meaning.
The patent document that application publication number is CN106655132A discloses a kind of string benefit current limliting integrated apparatus, including by
The compensation capacitor group C that capacitor C1, C2 are composed in parallel, the end of incoming cables of the compensation capacitor group C is through isolation switch G1 and distribution
The end of incoming cables of cabinet is connected, and leading-out terminal is successively connected through current-limiting reactor L, isolation switch G2 with the leading-out terminal of power distribution cabinet, described
The both ends of compensation capacitor group C are parallel with nonlinear resistance zinc oxide FR and discharge prevention system, and the two of the current-limiting reactor L
End is parallel with high-speed eddy switch K1, and the discharge prevention system, which is used to be shorted after protection compensation capacitor group C, discharges its electricity
Can, the nonlinear resistance zinc oxide FR is for protecting compensation capacitor group C not to be burned.The structure uses series compensation capacitance
Device is that current-limiting reactor has been carried out Integrated design to the scheme that the quality of voltage of route is improved, and needs two groups of high-speed switches,
Two groups of high-speed eddy high-speed switches, and its high-speed eddy high-speed switch is not able to achieve compact designed, two groups of high-speed eddies are quick
Switch operationally needs to carry out close fit, and its structure is complicated, bulky, and the factor that operation control need to consider is more, equipment
O&M technical requirements are high, and the patented technology is not able to achieve and runs heavy load season and light load season capacitor for route
More capacitance design-adjustables.
The patent document that Authorization Notice No. is CN205753416U discloses a kind of distributed string of pressure in three-phase integratedization and mends
Device, including compensation capacitor, damper, oxidation zinc component and its fuse, discharge switch, electronic switch, sampling PT and survey
Measure CT, the compensation capacitor is connected with damper to form branch after with aoxidize zinc component and its fuse, discharge switch, electricity
Sub switch, sampling PT and measurement CT are in parallel, and wherein one end of circuit is connected with measurement CT after parallel connection.Although the structure of the invention
Simply, line end voltage can be improved, big circuit, high-voltage impact safety and reliability can be prevented relatively high, reduce and mend
The capacity of capacitor is repaid, but it does not include disconnecting switch that the design of the structure of the patent is total, in-site installation is in application, in order to run inspection
It repairs conveniently, needs additionally to match installation disconnecting switch outside three-phase integratedization series compensation device, series capacitance is being carried out to route
When compensation transformation, required power off time is long, and the patent serial compensation capacitance value is fixed design, does not adapt to route operation weight
Load season and light load season series capacitor compensation degree design-adjustable.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of transmission line of electricity capacitor strings to mend cabinet,
The positioning column that positioning slide arranged in a crossed manner is arranged in cabinet body by this and is slidably arranged in positioning slide, realizes different positions
The positioning for the different type component set.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of transmission line of electricity capacitor string benefit cabinet, including cabinet body and the setting setting in the intracorporal compensation circuit of cabinet, the cabinet body are determined
Position sliding rail and the positioning column that is slidably arranged in positioning slide, the positioning slide include intersect connection setting horizontal slide rail and
Threaded hole is arranged in longitudinal slide rail, the positioning column.
Further, the cabinet body is equipped with power input and load output end, and the compensation circuit is connected to power supply
Between input terminal and load output end, the compensation circuit both ends are parallel with by-pass knife switch；The compensation circuit includes successively going here and there
Isolation switch one, the string of connection mend branch, sampling CT and isolation switch two, and string mends branch both ends and is parallel with arrester branch, current limliting
Impedance branch and PT sample branch；It includes the serial compensation capacitance one and serial compensation capacitance two being sequentially connected in series that the string, which mends branch, and string mends electricity
Hold a both ends and is parallel with the adjusting branch in series by load switch and fuse；The current-limiting impedance branch includes concatenated
High-speed switch and current limiter；The PT sampling branch includes sampling PT.
It further, further include that route PT, ups power and string mend protection supervisory equipment, the first winding of the route PT
It is connected to power input, the secondary winding of the sampling PT, secondary winding, the secondary winding of route PT for sampling CT access
String mends protection supervisory equipment, and taking energy coil is arranged on the route PT, and the ac input end access of the ups power takes energy line
Circle, ac output end for string mend protection supervisory equipment working power is provided, operation power is provided for high-speed switch and on-load switch,
Standby working power is provided for the more capacitance capacitor series compensation devices of high-speed switch type.
Further, the serial compensation capacitance one is different with the capacitor value of serial compensation capacitance two.
The beneficial effects of the present invention are:
1. setting positioning slide and the positioning column being slidably arranged in positioning slide, positioning slide include in son cabinet body of the invention
Intersect the horizontal slide rail and longitudinal slide rail of connection setting, threaded hole is arranged in positioning column, should be arranged in cabinet body and arranged in a crossed manner determine
Position sliding rail and the positioning column being slidably arranged in positioning slide, realize the positioning of the different type component of different location.
2. space utilization of the present invention is reasonable, structure design is simple, three-phase integratedization, realizes isolation switch and by-pass knife switch
Integrated design.It can realize that compensating electric capacity value is adjustable for various workings such as route heavy load, conventional load, light loads, according to
Line load size of current may be implemented string and mend automatically engaging and exiting for branch, and synthesis guarantees that line voltage distribution is distributed in reasonable water
It is flat, meet power quality requirement.By configuring dynamic energy Zinc-Oxide Arrester, high-speed switch and line short fault certainly
The protection supervisory equipment of dynamic identification may be implemented to occur to meet when route first short circuit failure or All other routes abnormal conditions high
Under the premise of voltge surge safety and reliability requires, the capacity of compensation capacitor is greatly reduced, price is greatly reduced, operation
It is easy to maintain.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cabinet body of the embodiment of the present invention and positioning slide；
Fig. 2 is the sectional view of positioning slide of the embodiment of the present invention；
Fig. 3 is the wiring schematic diagram of component in cabinet body of the embodiment of the present invention.
Figure label: 1- string mends protection supervisory equipment, 2- Zinc-Oxide Arrester, 3-UPS power supply, 4- power input, 5-
Route PT, 6- isolation switch one, 7- on-load switch, 8- serial compensation capacitance one, 9- fuse, 10- serial compensation capacitance two, 11- bypass knife
Lock, 12- sampling CT, 13- isolation switch two, 14- load output end, 15- cabinet body, 16- current limiter, 17- sample PT, and 18- is quick
Switch, 19- positioning column, 20- horizontal slide rail, 21- longitudinal slide rail, 22- threaded hole.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1 to Figure 3, the present invention includes cabinet body 15 and 15 compensation circuit in cabinet body, route PT5, UPS is arranged in
Power supply 3 and string mend protection supervisory equipment 1, and cabinet body 15 is equipped with power input 4 and load output end 14, and setting is fixed in cabinet body 15
Position sliding rail and the multiple positioning columns 19 being slidably arranged in positioning slide, positioning slide include the horizontal slide rail for intersecting connection setting
20 and longitudinal slide rail 21, threaded hole 22 is arranged in positioning column 19；
Compensation circuit is connected between power input 4 and load output end 14, and compensation circuit both ends are parallel with by-pass knife switch 11；
Compensation circuit includes that the isolation switch 1 being sequentially connected in series, string benefit branch, sampling CT12 and isolation switch 2 13, string mend branch two
End is parallel with arrester branch, current-limiting impedance branch and PT sampling branch；Two isolation switch and by-pass knife switch are manual control
System, when normal operation, isolation switch 1 and isolation switch 2 13 are in closed state, and by-pass knife switch 11 is in an off state,
When string benefit branch is overhauled or broken down, compensation circuit will be bypassed by by-pass knife switch 11, and guarantee line
14 normal power supply of road load output end；
It samples CT12 and is mended under the non-bypass operating condition of branch for measuring string, flow through the load current size that string mends branch, sampling
CT12 secondary winding access string mends protection supervisory equipment, measurement and protection for load current.Specifically, load can be set
Electric current threshold value, when load current is less than threshold value, and route does not need to carry out series capacitor compensation, high-speed switch closure, string
Branch is mended to exit；When load current is greater than threshold value, when route needs to carry out series capacitor compensation, high-speed switch is disconnected, and string is mended
Branch investment；
It includes the serial compensation capacitance 1 and serial compensation capacitance 2 10 being sequentially connected in series, serial compensation capacitance 1 and serial compensation capacitance 2 10 that string, which mends branch,
Capacitor value it is different, the comprehensive line load situation of change of the capacitor value of serial compensation capacitance 1 and serial compensation capacitance 2 10 is designed, should
String mends the induction reactance that branch is used to compensate power transmission source input terminal 4；
One 8 both ends of serial compensation capacitance are parallel with the adjusting branch in series by on-load switch 7 and fuse 9；Utilize on-load switch 7
Switching realize that the variation and adjusting of compensation capacitor value need compensativity big specifically, being in heavy load season when route,
Put into capacitor value it is larger when, on-load switch 7 is in open position, when route is in relatively conventional load season, needs compensativity
Small, when investment capacitor value is smaller, on-load switch 7 is in the close position, and by one of capacitor bypass, fuse 9 is to load
Switch 7 shields；
Arrester branch includes Zinc-Oxide Arrester 2；Zinc-Oxide Arrester 2 using multichannel znr string, simultaneously
Join multiple spot can technology, it is ensured that nonlinear resistance in Zinc-Oxide Arrester 2 can by the maximum short circuit current of route, and
Under the short circuit current, Zinc-Oxide Arrester 2 is not damaged because of fever, excessively electric under system short-circuit impact to limit string benefit branch
String is mended branch both end voltage and is limited in a lower level by pressure problem；
Current-limiting impedance branch includes concatenated high-speed switch 18 and current limiter 16；High-speed switch 18 is based on Quick eddy and drives straight line
Strong repulsion technical research design mends the quickly identification short circuit of protection supervisory equipment 1 by string when short trouble occurs for distribution line
Failure, after accurately identifying short trouble, short circuit current is transferred to 16 institute of current limiter by 18 close commands of high-speed switch of quickly setting out
Branch, fault identification complete and high-speed switch 18 closure can short circuit occur after 8-12ms in complete, avoid route
Short-circuit current, which flows through string, mends branch, to cause capacitor faults；
It includes sampling PT17 that PT, which samples branch, mends branch both end voltage, and the secondary winding that will sample PT17 for detecting string
Access string mends protection supervisory equipment, is used for voltage measurement and protection；
The first winding of route PT5 is connected to power input 4, and the secondary winding access string of route PT5 mends protection supervisory equipment
1, measurement and protection for line voltage distribution；
Taking energy coil is set on route PT5, is the more capacitance capacitor strings of high-speed switch type for completing line voltage distribution two times transfer
Join compensation device and working power is provided；
The ac input end of ups power 3 accesses taking energy coil, and ac output end is that string benefit protection supervisory equipment 1 provides work electricity
Source, be high-speed switch 18 and on-load switch 7 operation power is provided, provided for the more capacitance capacitor series compensation devices of high-speed switch type it is standby
Use working power.In route power loss, when can not carry out taking electricity from the taking energy coil of route PT, ups power 3 can guarantee that it is continuous
Work 30 minutes or more；
String mends protection supervisory equipment 1, using product in the prior art, such as Nanrui Jibao Electric Co., Ltd
PCS-963X series capacitors protection supervisory equipment or the WFB-8207 Series Microcomputer capacitor of Xuji Electric Co., Ltd
Protection supervisory equipment completes the protection of the automatic switching, series compensation device of the more capacitance capacitor series compensation devices of high-speed switch type
With observing and controlling, externally communication etc. functions.External secondary control wiring has route PT secondary winding, sampling PT secondary winding, sampling CT
Secondary winding, high-speed switch location information and divide-shut brake circuit, the location information of on-load switch and divide-shut brake circuit, whole device
Working power (taking energy coil) and backup power source (ups power) etc..String mends protection supervisory equipment 1 and has remote communication interface, can
It, can also be by configuring wireless communication module with channel radio to be communicated using optical-fibre communications and distal end distribution automation main website
The mode of news is communicated with distal end distribution automation main website.
Working principle is as follows:
When normal operation: by-pass knife switch 11 disconnects, isolation switch 1, and isolation switch 2 13 is in the close position；Serial compensation capacitance one
8, the string that serial compensation capacitance 2 10 is constituted mends whether branch all puts into two serial compensation capacitances needs according to locating season load variations
Situation determines that on-load switch 7 is closure or disconnects, and heavy load season disconnects on-load switch 7 and puts into two group capacitors, conventional negative
Lotus season closed load switch 7 puts into a group capacitor；Whether string benefit branch puts into negative by setting in string benefit protection supervisory equipment 1
Charged current threshold value determines, when load current is less than threshold value, and route does not need to carry out series capacitor compensation, high-speed switch 18
Closure, string are mended branch and are exited；When load current is greater than threshold value, when route needs to carry out series capacitor compensation, high-speed switch 18
It disconnects, string mends branch investment.
When the exception such as short trouble occurs for distribution line: if causing both ends overvoltage because high current flows through due to string mends branch,
Then Zinc-Oxide Arrester 2 is connected rapidly, string is mended branch both end voltage limit value in reduced levels, while in order to avoid high current is long
Time flow zinc peroxide arrester 2 and damage, by string mend protection supervisory equipment 1 quickly identification line short circuit current, rapidly
18 close commands of high-speed switch are issued, the transfer of short-circuit current is completed in 8-12ms, and will not influence original route and match
The protective relaying device set identifies failure and acts tripping.
When string mends branch equipment maintenance or failure: by-pass knife switch 11 is closed, isolation switch 1, at isolation switch 2 13
In open position, string will be mended into branch by by-pass knife switch 11 and bypassed, and guarantee line load end load normal power supply.
Basic principle of the invention, technical characteristic and technological merit has been shown and described above.But the present invention is not by above-mentioned
The limitation of embodiment, the above embodiments and description only illustrate the principle of the present invention, is not departing from essence of the invention
Under the premise of mind and range, various changes and improvements may be made to the invention, these changes and improvements both fall within claimed
In invention scope.
Claims (4)
1. a kind of transmission line of electricity capacitor string mends cabinet, it is characterised in that: described including cabinet body and setting in the intracorporal compensation circuit of cabinet
Setting positioning slide and the positioning column being slidably arranged in positioning slide in cabinet body, the positioning slide include intersecting connection setting
Horizontal slide rail and longitudinal slide rail, threaded hole is arranged in the positioning column.
2. a kind of transmission line of electricity capacitor string mends cabinet according to claim 1, it is characterised in that: it is characterized by: the cabinet body
It is equipped with power input and load output end, the compensation circuit is connected between power input and load output end, institute
It states compensation circuit both ends and is parallel with by-pass knife switch；The compensation circuit includes the isolation switch one being sequentially connected in series, string benefit branch, adopts
Sample CT and isolation switch two, string mend branch both ends and are parallel with arrester branch, current-limiting impedance branch and PT sampling branch；The string
Mending branch includes the serial compensation capacitance one and serial compensation capacitance two being sequentially connected in series, and one both ends of serial compensation capacitance are parallel with by on-load switch and melt
Disconnected device adjusting branch in series；The current-limiting impedance branch includes concatenated high-speed switch and current limiter；The PT sampling
Branch includes sampling PT.
3. a kind of transmission line of electricity capacitor string mends cabinet according to claim 2, it is characterised in that: further include route PT, ups power
Protection supervisory equipment is mended with string, the first winding of the route PT is connected to power input, the secondary winding of the sampling PT,
Secondary winding, the secondary winding of route PT of sampling CT accesses string and mends protection supervisory equipment, and setting takes energy on the route PT
Coil, the ac input end of the ups power access taking energy coil, and ac output end mends protection supervisory equipment for string and provides work
Power supply, provide operation power for high-speed switch and on-load switch, provided for the more capacitance capacitor series compensation devices of high-speed switch type it is standby
Use working power.
4. a kind of transmission line of electricity capacitor string mends cabinet according to claim 2, it is characterised in that: the serial compensation capacitance one and string are mended
The capacitor value of capacitor two is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133421.6A CN109066720A (en) | 2018-09-27 | 2018-09-27 | A kind of transmission line of electricity capacitor string benefit cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133421.6A CN109066720A (en) | 2018-09-27 | 2018-09-27 | A kind of transmission line of electricity capacitor string benefit cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109066720A true CN109066720A (en) | 2018-12-21 |
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ID=64766248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811133421.6A Pending CN109066720A (en) | 2018-09-27 | 2018-09-27 | A kind of transmission line of electricity capacitor string benefit cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1274978A (en) * | 1999-02-25 | 2000-11-29 | 东芝株式会社 | Series compensator |
| DE102008053933A1 (en) * | 2008-10-30 | 2010-05-06 | Schaeffler Kg | Linear ball bearing and support element for this and manufacturing process and forming device for a blank of the support element |
| CN105098726A (en) * | 2015-09-15 | 2015-11-25 | 李梦菲 | Overvoltage rapid protection circuit and method for series capacitor of power system |
| CN105846444A (en) * | 2016-05-05 | 2016-08-10 | 广西电网有限责任公司河池供电局 | Reactive power series compensation device topological wiring used for high-voltage and medium-voltage distribution network |
| CN206022965U (en) * | 2016-09-19 | 2017-03-15 | 国网河南省电力公司漯河供电公司 | Three-level earth leakage protective electrical energy metering tank |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
-
2018
- 2018-09-27 CN CN201811133421.6A patent/CN109066720A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274978A (en) * | 1999-02-25 | 2000-11-29 | 东芝株式会社 | Series compensator |
| DE102008053933A1 (en) * | 2008-10-30 | 2010-05-06 | Schaeffler Kg | Linear ball bearing and support element for this and manufacturing process and forming device for a blank of the support element |
| CN105098726A (en) * | 2015-09-15 | 2015-11-25 | 李梦菲 | Overvoltage rapid protection circuit and method for series capacitor of power system |
| CN105846444A (en) * | 2016-05-05 | 2016-08-10 | 广西电网有限责任公司河池供电局 | Reactive power series compensation device topological wiring used for high-voltage and medium-voltage distribution network |
| CN206022965U (en) * | 2016-09-19 | 2017-03-15 | 国网河南省电力公司漯河供电公司 | Three-level earth leakage protective electrical energy metering tank |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
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