CN204089201U - Reactive compensation controlling device - Google Patents
Reactive compensation controlling device Download PDFInfo
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- CN204089201U CN204089201U CN201420235706.1U CN201420235706U CN204089201U CN 204089201 U CN204089201 U CN 204089201U CN 201420235706 U CN201420235706 U CN 201420235706U CN 204089201 U CN204089201 U CN 204089201U
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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 discloses a kind of reactive compensation controlling device.Wherein, this reactive compensation controlling device comprises: board plug device is arranged on the inside of the cabinet of reactive compensation controlling device, and board plug device comprises: instrument transformer plate, is connected with electric power system, for gathering the information about power of electric power system; Switch collection plate, is connected with rectification module, for gathering the on off state of rectification module; Processor plate, is connected with instrument transformer plate and switch collection plate respectively, for generating control command according to information about power and on off state; Switch control rule plate, is connected with processor plate, for controlling rectification module action according to control command.Solve reactive compensation controlling device in prior art and carry out the inaccurate problem of idle control, achieve collection electric signal complete, more accurate to the judgement of system running state, thus accurately the control of reactive power compensating is carried out to electric power system.
Description
Technical field
The utility model relates to power supply control field, in particular to a kind of reactive compensation controlling device.
Background technology
For the core component that the reactive compensation controlling device in electric power system is reactive compensation cabinet, there is very important status, the manufacturer of major part reactive compensation cabinet is all the outer control device, capacitor, rectification module, relay, air switch etc. bought, is then assembled into overall reactive compensation cabinet.
The control of reactive power compensating cabinet plays an important role in State Grid's supply, and it can systems stabilisation load effectively, keeps voltage stabilization, cleaning system power supply quality.Current the control of reactive power compensating technology many employings power factor compensation technology, part producer adopts Reactive Power Control technology, take power factor as the reactive compensation controlling device according to compensating, although cheap, but power factor error causes more greatly compensation effect generally very poor, has belonged to superseded row.Be single according to the reactive compensation controlling device compensation way carrying out controlling with reactive power, lack considering the effect of reactive compensation cabinet, but too focus on the design of the aspect such as chinese disply and data communication, and have ignored the object of reactive power compensation and produce the idle origin cause of formation etc., reactive compensation controlling device major function is the control of reactive power compensating, be not the additional function of display or communication and so on, perfect display or communication Design can not ensure the excellent controlling functions of reactive compensation controlling device.Simultaneously, reactive compensation controlling device cabinet many employings Plastic casing in prior art, structure is insecure and be easily subject to the impact of various interference signal, install and use environmental requirement high, specific occasion can only be adapted to, outdoor box of such as indoor location, ventilation good heat dissipation etc., otherwise the reliable and stable work of reactive compensation controlling device can be affected.
Existing reactive compensation controlling device mostly is Plastic casing, simultaneously function singleness, mends altogether or mixed benefit is divided equally and offered meter, the electric parameters gathered is few, and man-machine interaction simultaneously adopts character mode lcd and button operation, and man-machine interaction is poor, can only specific occasion be used for, use extremely inconvenience.
Carry out the inaccurate problem of idle control for reactive compensation controlling device in prior art, not yet propose effective solution at present.
Utility model content
For the problem of correlation technique, not yet propose effective solution at present, for this reason, main purpose of the present utility model is to provide a kind of reactive compensation controlling device, to solve the problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of reactive compensation controlling device, this reactive compensation controlling device comprises: board plug device is arranged on the inside of the cabinet of reactive compensation controlling device, board plug device comprises: instrument transformer plate, be connected with electric power system, for gathering the information about power of electric power system; Switch collection plate, is connected with rectification module, for gathering the on off state of rectification module; Processor plate, is connected with instrument transformer plate and switch collection plate respectively, for generating control command according to information about power and on off state; Switch control rule plate, is connected with processor plate, for controlling rectification module action according to control command.
Further, cabinet comprises: front panel and casing, and front panel is fixed on one end of casing; Reactive compensation controlling device also comprises: motherboard, is arranged between front panel and casing, and motherboard is provided with one or more plug, motherboard is connected with board plug device by plug; Board plug device comprises: the socket that arrange corresponding to plug, and a plug and a socket are connected, and instrument transformer plate, switch collection plate, processor plate and switch control rule plate are connected with a socket respectively.
Further, reactive compensation controlling device also comprises: display unit, is arranged on front panel, and display unit is connected by front panel and motherboard, and display unit is for showing the running status of reactive compensation controlling device; Input unit, is connected with motherboard, for inputting the control command of user.
Further, input unit comprises mouse; Display unit comprises display and control panel.
Further, display is liquid crystal display.
Further, cabinet also comprises: card frame, and front panel is fixed on casing through card frame.
Further, cabinet also comprises: rear board, is embedded in the other end of cabinet by connector.
Further, cabinet is installed in drawout cubicle by mounting bar or shields cashier's office in a shop.
Further, cabinet is pressed on drawout cubicle by the guide rail bar on rear side of cabinet or shields cashier's office in a shop.
Further, cabinet is made up of metal material.
Pass through the utility model, instrument transformer plate gathers the information about power of electric power system, switch collection plate gathers the on off state of rectification module, processor plate generates control command according to information about power and on off state, actions such as being switched according to this control command control rectification module by switch control rule buttress, drop into, exit, to carry out the control of reactive power compensating to electric power system.By reactive compensation controlling device of the present utility model, in control device, installing multiple plate (instrument transformer plate, switch collection plate, processor plate and switch control rule plate), to gather electric signal complete, and generate control command exactly according to information about power and on off state, to carry out the control of reactive power compensating to electric power system, solve reactive compensation controlling device in prior art and carry out the inaccurate problem of idle control, achieve collection electric signal complete, more accurate to the judgement of system running state, thus accurately the control of reactive power compensating is carried out to electric power system.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the reactive compensation controlling device according to the utility model embodiment; And
Fig. 2 is the structural representation according to a kind of optional reactive compensation controlling device of the utility model embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Fig. 1 is the structural representation of the reactive compensation controlling device according to the utility model embodiment.The reactive power compensator of the application comprises: board plug device is arranged on the inside of the cabinet of reactive compensation controlling device, and board plug device comprises: instrument transformer plate, is connected with electric power system, for gathering the information about power of electric power system; Switch collection plate, is connected with rectification module, for gathering the on off state of rectification module; Processor plate, is connected with instrument transformer plate and switch collection plate respectively, for generating control command according to information about power and on off state; Switch control rule plate, is connected with processor plate, for controlling rectification module action according to control command.
Adopt reactive compensation controlling device of the present utility model, instrument transformer plate gathers the information about power of electric power system, switch collection plate gathers the on off state of rectification module, processor plate generates control command according to information about power and on off state, actions such as being switched according to this control command control rectification module by switch control rule buttress, drop into, exit, to carry out the control of reactive power compensating to electric power system.By reactive compensation controlling device of the present utility model, in control device, installing multiple plate (instrument transformer plate, switch collection plate, processor plate and switch control rule plate), to gather electric signal complete, and generate control command exactly according to information about power and on off state, to carry out the control of reactive power compensating to electric power system, solve reactive compensation controlling device in prior art and carry out the inaccurate problem of idle control, achieve collection electric signal complete, more accurate to the judgement of system running state, thus accurately the control of reactive power compensating is carried out to electric power system.
Wherein, switch collection plate, for the opening and closing state that gathers rectification module for device provides the switching-state information of reactive power compensation; Processor plate calculates the information about power gathered and on off state and sends the core component of control command according to the control strategy of setting.
In above-described embodiment of the present utility model, can also comprise power panel in board plug device, this power panel is used for providing electric energy.
As shown in Figure 1, cabinet can comprise: front panel 11 and casing 13, and front panel is fixed on one end of casing; Reactive compensation controlling device also comprises: motherboard, is arranged between front panel and casing, and motherboard is provided with one or more plug, motherboard is connected with board plug device by plug; Board plug device comprises: the socket that arrange corresponding to plug, and a plug and a socket are connected, and instrument transformer plate, switch collection plate, processor plate and switch control rule plate are connected with a socket respectively.
Wherein, motherboard is for connecting the signal between each plate (as instrument transformer plate, switch collection plate, processor plate, switch control rule plate and power panel) on board plug device.Wherein, adopt 32 bit DSP chips as the processor on processor plate, speed improves greatly, various event can be made to carry out timing with ms, the raising of hardware based software function can complete multi-protective function by the algorithm of various complexity, greatly improve its precision, protective number precision can reach 2%, and power accuracy can reach 0.5%; Electricity precision can reach 0.5%.
By the board plug device in above-described embodiment and realization of goal signals collecting, transmission, circuit theory is simple, be easy to grasp, and plug-in unit hardware is general, and similar-type products can not need to regulate just interchangeable in cabinet of the same type, after changing, certainty of measurement is unaffected, and system of being convenient to is repaired fast.
Cabinet in reactive compensation controlling device in above-described embodiment adopts all-metal construction, adopts all-metal large casing structure antijamming capability strong, makes the operation of control device more reliable.
By above-described embodiment, cabinet adopts all-sealed structure, the impact of dust, humidity, pernicious gas is reduced greatly, adds wide temperature working range, makes device be adapted to be mounted within the scene of control, greatly improves the reliability of device long-time running; And cabinet adopts all-metal cabinet, there is stronger resistance to mechanical collision performance and capability of electromagnetic shielding, substantially increase the anti-interference grade of device, there is very high anti-electromagnetic interference level, and motherboard makes product reliability fail safe be improved significantly with being connected without distribution of board plug device with higher Electro Magnetic Compatibility.
Reactive compensation controlling device in above-described embodiment can also comprise: display unit, is arranged on front panel, and display unit is connected by front panel and motherboard, and display unit is for showing the running status of reactive compensation controlling device; Input unit, is connected with motherboard, for inputting the control command of user.
Display unit in above-described embodiment adopts liquid crystal display, input unit adopts rotation mouse to input as man-machine interactive operation, not only stereoscopic is attractive in appearance, and the display of liquid crystal display also very hommization, easy to operate easy grasp, various modes selects the function that can adapt to different application occasion to select.
The control mode of the reactive compensation controlling device in the above embodiments of the present application can select Reactive Power Control, also can select power factor controlling mode; The Capacitor banks of rectification module can be arranged singly organizes control, also arranges many groups and controls simultaneously.
As shown in Figure 2, reactive compensation controlling device of the present utility model mainly comprises cabinet 10, motherboard 20, insert arrangement 30, liquid crystal display 40, each several part is structurally separate, electrically goes up close association, combines the complete product that composition one completes Function of Reactive Power Compensation Control.Be described in detail below in conjunction with the function of accompanying drawing 2 pairs of each part mentioned aboves and installation site.
Cabinet 10 can comprise front panel 11, card frame 12, casing 13, rear board 14, and cabinet, as the support of electric components, mainly plays fixing, to protect inner each components and parts and shield electromagnetic interference signal effect.
Cabinet as shown in Figure 2, good looking appearance, structure are clean and tidy, cooperation is tight, the front panel of cabinet, casing and rear board are metal material and each part mentioned above close contact, thus can have good electromagnetic shielding action, are applicable to being applied in electromagnetic interference than in stronger environment.Wherein, the front panel of cabinet, casing and rear board can use aluminium section bar to be processed into.
Particularly, can be fixed between the front panel 11 of cabinet and the casing 13 of cabinet through card frame 12 by screw, the rear board 14 of cabinet can be embedded in the groove at cabinet rear portion by screw.The each parts of case box are engaged mutually, form overall.Cabinet in the utility model can be installed in drawout cubicle by mounting bar or electric power protection shields cashier's office in a shop; and the plug-in unit of cabinet inside is changed by dismounting rear board; facilitate on-the-spot Fast-Maintenance, such as: the processor plate in insert arrangement and instrument transformer plate etc.
In the utility model, the rear board of device is mainly used to closed case and fixing pluge.
Control device of the present utility model also comprises: motherboard 20, motherboard mainly plays the effect connecting various signal and fixing pluge in this control device, motherboard is positioned at the front portion of cabinet, be arranged between front panel and plug-in unit, and motherboard is equipped with 4 96 pin European plugs, each European plugs can be connected with the socket be arranged on plug-in unit respectively.After European plugs is connected with the socket be arranged on plug-in unit, just can be communicated with the electric signal between each plug-in unit.
As shown in Figure 2, insert arrangement can comprise four plug-in units, and above-mentioned four plug-in units can be followed successively by power panel 31, switch control rule plate 32, processor plate (i.e. CPU board) 33 and instrument transformer plate 34.Above-mentioned is only make exemplary illustration, and the erection sequence of each plug-in unit on board plug device is not limited thereto.
Wherein, CPU board is the core of whole control device, after the switch state signal that CPU board collects switch collection plate and the information about power that instrument transformer plate collects require to calculate and judge according to the compensation policy of reactive power compensation, control command is sent to switch control rule plate, and push corresponding control command to liquid crystal display 40, also can accept operational order by network or action button in addition, by analysis, calculate, judge after send corresponding control command.
Power panel is used for providing working power for the components and parts in this reactive compensation controlling device, particularly, the voltage transitions of electric power system can be the operating voltage of the components and parts in reactive compensation controlling device by power panel, and each components and parts in reactive compensation controlling device can normally be worked.Wherein, electric power system can be electrical network.
Plug-in unit in above-described embodiment is all inserted by cabinet rear portion, to be connected and to fix with motherboard by European plugs.
Liquid crystal display major function in the above embodiments of the present application is to provide input, the output interface of device, and shows the running status of this control device.Wherein, liquid crystal display comprises Liquid Crystal Module and control circuit board.
Rotation mouse can be used at the utility model above-described embodiment, particularly, a rotating disk mouse 50 can be set on front panel and can easily complete every operation on big screen LCD.Wherein, rotate the mode that mouse use rotates and pressing combines to operate.Particularly, search with confirm: utilize and rotate mouse and move the cursor to constraint term, pressing mouse can enter; Amendment and mobile amendment position: after the state recalling " please input password ", press and rotate mouse and enter input cryptographic state, now have a flicker bit, revise mobile flicker bit with rotation mouse: utilize and rotate mouse and add 1 or subtract 1 in flicker bit.
Reactive compensation controlling device in the utility model above-described embodiment can by each functional unit (interval) corresponding to a little chassis design, each device all can transfer to the neighbouring installation of primary equipment of electric power system, and this reactive compensation controlling device is got in touch with by RS-485 bus communication cable with between main frame.By the RS-485 bus communication cable liaison method in above-described embodiment; only got in touch with by universal shield twisted-pair feeder and main frame; main frame only does daily management mission; avoid and all measurements, control, protection, holding wire were all accessed master-control room in the past; greatly simplify secondary connection; save investment, improve system reliability and maintainability, decrease accident potential.
The power supply AC and DC 220V of the reactive compensation controlling device in above-described embodiment is general (as far as possible adopting jumbo direct current or ac uninterrupted power supply), power supply power consumption 5W.Alternating current, voltage analog all adopt interchange Direct Sampling, without middle transmitter link, debug easy.Alternating voltage power consumption is lower than 0.5VA, and alternating current power consumption is lower than 0.5VA; Device itself is without any adjustable element, and high stability high precision data acquisition and exfactory inspection, make scene not make any wire jumper, uncomfortable drift, does not change resistance, uncomfortable precision, do not open cabinet, adaptable software process, external environment condition changes or long-time running does not affect sampling precision.
Idle control is realized by the following method by the utility model:
(1), when power factor is lower than power factor input threshold quantity, Capacitor banks is dropped into; Control objectives is closest to excision threshold power factor, and is not ahead of power factor excision thresholding; Power factor excision thresholding is equal to 1.00 when being-1.00.
Particularly, according to target power factor, required condenser capacity can be calculated by compensating proportion, carries out optimizing switching with this capacity, and only mend.Such as: system only needs 200kvar can reach the input threshold quantity of power factor and not excise thresholding in advance, consider better compensation effect, namely 220kvar will be dropped into, by optimizing, 220kvar, between capacity of capacitor bank 200kvar and 230kvar, now presses optimizing result, then need to drop into 230kvar Capacitor banks, if but dropped into 230kvar, power factor but leading power factor could excise thresholding, now drops into by the 200kvar being no more than excision thresholding.
(2) reactive power input threshold quantity refers to that the minimum reactive power value that will reach of electrical network could drop into capacitor and compensate, and this value is the capability value of minimum Capacitor banks usually; Reactive power excision thresholding represents the capacity allowing to mend when being negative, when for other values, when representing that System Reactive Power is ahead of this value, then cuts away unnecessary Capacitor banks.
(3), drop into time delay and excision time delay represent controller meet input or excision condition maintain the time interval, if be set to 0 time delay, represent immediately drop into or excision.
Particularly, sense cycle represents that capacitor is after execution once drops into or excises action, and capacitor can return to the time of stable state.During input, represent through from after issuing commands to capacitor and charging the time interval of electricity completely, can detection system, again switched capacitor again; During excision, represent through from after issuing commands to time interval that capacitor discharges completely, can detection system, again switched capacitor again.(administration may be had to cut, and therefore sense cycle interval should be both maximums simultaneously)
(4) Reactive Power Control way selection, device can carry out the switching of capacitor by power factor or reactive power two kinds of modes, therefore need to select a kind of control mode.
(5) function is thrown and is moved back pressing plate.For ease of field adjustable, avoid the miscarrying of electric capacity under debugging mode to cut, select drop into or exit idle controlling functions by pressing plate.
(6) according to target power factor switched capacitor.
Particularly, according to target power factor, each sense cycle calculates each reactive power compensation capacity required mutually in real time, mending, recruiting altogether and putting in conjunction with dividing, and dividing that combination will export is mended and mend Capacitor banks altogether; As A, B, C three-phase needs the condenser capacity compensated to be 30kvar, 50kvvar, 60kvar respectively, now there are 10kvar, 20kvar and 40kvar in benefit group altogether, so can drop into 10kvar and 20kvar in common benefit group, and then drop in B phase point benefit group in 20kvar, C phase point benefit group and drop into 30kvar.Therefore in Switching Strategy, with the first optimizing in common benefit group of A, B, C tri-compensation condenser capacity minimum value needed for Xiangli, then by residual capacity optimizing in point benefit group respectively.
By above-described embodiment, not only can realize idle control, can also following overvoltage protection, o-volt protection, open phase protection and harmonic protection be carried out.
Particularly, overvoltage protection is realized by following method: the arbitrary phases line voltage in Uab, Ubc or Uca is greater than setting value, then locking reactive power drops into (if delay time to voltage resume before normally, removes the locking of reactive power input), reactive power is allowed to excise between time delay, still overvoltage after delay time arrives, then think fault overvoltage, device cuts away all Capacitor banks; Start to excise timer alarm, locking controller control loop exports simultaneously.
O-volt protection realizes as follows: Uab, Ubc or Uca three-phase line voltage is simultaneously lower than setting value, then locking reactive power drops into (if delay time to voltage resume before normally, removes the locking of reactive power input), reactive power is allowed to excise between time delay, still decompression after delay time arrives, then think fault low-voltage, device cuts away all Capacitor banks; Start to excise timer alarm, locking controller control loop exports simultaneously.
Open phase protection realizes as follows: when having a phase current to be greater than to have stream definite value in Ia, Ib and Ic, if when another two-phase or a phase current are without stream, then think and disconnected phase occurs.Still break mutually after delay time arrives then unit protection alarm.
Harmonic protection realizes as follows: when the percent harmonic distortion of A, B, C three-phase voltage or electric current exceedes setting definite value, in delay time, allow input and the excision of reactive power, after delay time arrives, harmonic content still overflows, then device cuts away all Capacitor banks; Start to excise timer alarm, locking controller control loop exports simultaneously.Protection starts blocking time timing after reporting to the police, and in blocking time, percent harmonic distortion overflows alarm but capacitor still normal switching again.
Above-mentioned idle control, overvoltage protection, o-volt protection, open phase protection and harmonic protection all can be realized by the processor plate in board plug device.
As can be seen from the above description, the utility model achieves following technique effect:
Adopt reactive compensation controlling device of the present utility model, instrument transformer plate gathers the information about power of electric power system, switch collection plate gathers the on off state of rectification module, processor plate generates control command according to information about power and on off state, actions such as being switched according to this control command control rectification module by switch control rule buttress, drop into, exit, to carry out the control of reactive power compensating to electric power system.By reactive compensation controlling device of the present utility model, in control device, installing multiple plate (instrument transformer plate, switch collection plate, processor plate and switch control rule plate), to gather electric signal complete, and generate control command exactly according to information about power and on off state, to carry out the control of reactive power compensating to electric power system, solve reactive compensation controlling device in prior art and carry out the inaccurate problem of idle control, achieve collection electric signal complete, more accurate to the judgement of system running state, thus accurately the control of reactive power compensating is carried out to electric power system.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a reactive compensation controlling device, is characterized in that, comprising:
Board plug device is arranged on the inside of the cabinet of reactive compensation controlling device, and described board plug device comprises:
Instrument transformer plate, is connected with electric power system, for gathering the information about power of described electric power system;
Switch collection plate, is connected with rectification module, for gathering the on off state of rectification module;
Processor plate, is connected with described instrument transformer plate and described switch collection plate respectively, for generating control command according to described information about power and described on off state;
Switch control rule plate, is connected with described processor plate, for controlling described rectification module action according to described control command.
2. reactive compensation controlling device according to claim 1, is characterized in that,
Described cabinet comprises: front panel and casing, and described front panel is fixed on one end of described casing;
Described reactive compensation controlling device also comprises: motherboard, is arranged between described front panel and described casing, described motherboard is provided with one or more plug, and described motherboard is connected with described board plug device by described plug;
Described board plug device comprises: the socket that arrange corresponding to described plug, a described plug and a described socket are connected, and described instrument transformer plate, described switch collection plate, described processor plate and described switch control rule plate are connected with a described socket respectively.
3. reactive compensation controlling device according to claim 2, is characterized in that, described reactive compensation controlling device also comprises:
Display unit, is arranged on described front panel, and described display unit is connected by described front panel and described motherboard, and described display unit is for showing the running status of described reactive compensation controlling device;
Input unit, is connected with described motherboard, for inputting the control command of user.
4. reactive compensation controlling device according to claim 3, is characterized in that, described input unit comprises mouse; Described display unit comprises display and control panel.
5. reactive compensation controlling device according to claim 4, is characterized in that, described display is liquid crystal display.
6. reactive compensation controlling device according to claim 2, is characterized in that, described cabinet also comprises:
Card frame, described front panel is fixed on described casing through described card frame.
7. reactive compensation controlling device according to claim 1, is characterized in that, described cabinet also comprises:
Rear board, is embedded in the other end of described cabinet by connector.
8. reactive compensation controlling device according to claim 7, is characterized in that, described cabinet is installed in drawout cubicle by mounting bar or shields cashier's office in a shop.
9. reactive compensation controlling device according to claim 8, is characterized in that, described cabinet is pressed on described drawout cubicle or described screen cashier's office in a shop by the guide rail bar on rear side of cabinet.
10. reactive compensation controlling device as claimed in any of claims 1 to 9, is characterized in that, described cabinet is made up of metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235706.1U CN204089201U (en) | 2014-05-08 | 2014-05-08 | Reactive compensation controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235706.1U CN204089201U (en) | 2014-05-08 | 2014-05-08 | Reactive compensation controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089201U true CN204089201U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420235706.1U Expired - Lifetime CN204089201U (en) | 2014-05-08 | 2014-05-08 | Reactive compensation controlling device |
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| CN (1) | CN204089201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972907A (en) * | 2014-05-08 | 2014-08-06 | 北京德威特继保自动化科技股份有限公司 | Reactive compensation control device |
-
2014
- 2014-05-08 CN CN201420235706.1U patent/CN204089201U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103972907A (en) * | 2014-05-08 | 2014-08-06 | 北京德威特继保自动化科技股份有限公司 | Reactive compensation control device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 101300 1, 1 yuan 17, Juyuan Road, Mapo Town, Shunyi District, Beijing. Patentee after: BEIJING DEVOT ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 101318 Beijing Shunyi District Tianzhu Airport Industrial Area B area Anqing avenue a 9 Patentee before: BEIJING DEVOTE RELAY PROTECTION AUTOMATION TECHNOLOGY CO.,LTD. |
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| CX01 | Expiry of patent term |
Granted publication date: 20150107 |