CN202197108U - Intelligent integrated reactive compensation device - Google Patents
Intelligent integrated reactive compensation device Download PDFInfo
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- CN202197108U CN202197108U CN 201120333299 CN201120333299U CN202197108U CN 202197108 U CN202197108 U CN 202197108U CN 201120333299 CN201120333299 CN 201120333299 CN 201120333299 U CN201120333299 U CN 201120333299U CN 202197108 U CN202197108 U CN 202197108U
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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 reactive compensation device and specifically to an intelligent integrated reactive compensation device capable of automatically sending and receiving. In the utility model, a central controller connects with a temperature sampler, a communication circuit, an AD sampling chip, a combination switch and a power failure detector. The communication circuit is composed of two same communication chips. An enable signal sending pin of one communication chip connects with a control interface while a signal sending pin of the communication chip connects with a sending interface. A grounding pin of the communication chips connects with a power source pin and is in a ground connection. A signal receiving pin of the other communication chip connects with a receiving interface while a signal sending pin of the other communication chip connects with a power source. An enable signal receiving pin, an enable signal sending pin and a chip grounding pin of the other communication chip are in a ground connection. Exports of communication lines of the two communication chips are connected together in parallel and then output. The intelligent integrated reactive compensation device capable of automatically sending and receiving in the utility model has the following advantages: the automatic sending and receiving are realized; the intelligent integrated reactive compensation device capable of automatically sending and receiving is capable of data detection; communication conflict is avoided; and self network organization free of address establishment is realized. The intelligent integrated reactive compensation device capable of automatically sending and receiving can be used widely in a power industry.
Description
Technical field
The utility model relates to a kind of reactive power compensator, specifically is meant the reactive power compensator of internal loopback in a kind of communication.
Technical background
The effect that reactive power compensator is born in the electronic power system is the power factor that improves electrical network, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves the power supply environment.Existing compensated line mode of carrying out reactive power compensation is to adopt in bulk forming in the equipment box out of doors such as an idle compensating control and Duo Tai low voltage power capacitor, A.C. contactor, protection device; Cause existing reactive power compensation control device to have certain problem like this: 1, function singleness, reactive power compensator generally do not contain communication function; The networking difficulty; According to artificial copy reading, can not accomplish the information real-time transmission; 2, the weak and shortage fault self-diagnosis function of defencive function; 3, used product is a globality equipment, and product is in case after forming, the adjustment of its inner member and the adjustment of reactive compensation capacity be difficulty very; 4, global facility kind, quantity are many, and incipient fault point is many; The overall maintenance difficulty is big, and failure diagnosis and in-situ processing be difficulty, required time length etc. relatively.
The reactive power compensation situation of tightening and improving power distribution network is for reducing loss, improving that quality of voltage etc. has great importance, good economic and social benefit.Present power distribution network area is wide, the user is various, load is complicated, electric network reactive compensation is not enough, the failure rate of reactive power compensator is high, big, the switching of easy care, power consumption does not shove greatly, so the improved space of reactive power compensation is very big.
No. 324 " about printing and distributing the notice of " State Grid Corporation of China's new technology spread guiding principle originally " " document goes out in national grid section (2006): the Eleventh Five-Year Plan period; Company will widely popularize the application miniaturization, few occupation of land, insulating, no oiling, fewly safeguard, energy-saving and cost-reducing, information integration, intelligent, energy-saving equipment.And in 13.2 " GA for reactive power optimization, the net damage technology that a reduce " joint, point out: use reactive-load compensation equipment based on Intelligent Control Strategy; Reactive power compensation automatic switching device do not have overvoltage and overcurrent should rationally be controlled the harmonic wave that the switching of idle device own produces, the maintenance workload that will as far as possible reduce reactive power compensator.So meeting intelligent, the integration power capacitor of above-mentioned requirements, development has realistic meanings.
The utility model content
The utility model proposes a kind of handled easily, intelligent good compensation arrangement to deficiency of the prior art.
The utility model is achieved through following technical proposals:
The integrated reactive power compensator of intelligence; Comprise central controller, temperature sampling device, communicating circuit, AD sampling A, combination switch, display panel and keypad, central controller is connected with temperature sampling device, communicating circuit, AD sampling A, combination switch respectively; It is characterized in that central controller also is connected with the detection of power loss device;
Described communicating circuit is the RS485 circuit, is made up of two identical communication chips;
The transmission enable signal pin of one of them communication chip is connected with control interface, signal sends pin and is connected with transmission interface; The lower margin of communication chip, supply pin are respectively the lower margin and the supply pin of power supply;
The signal of another communication chip receives pin and is connected with receiving interface; Signal sends pin and is connected with power supply; Receive the enable signal pin, send enable signal pin and chip lower margin connection ground connection;
Export after the outlet parallel connection of the connection of two identical communication chips.
As preferably, the central controller in the integrated reactive power compensator of above-mentioned intelligence also is connected with alarming node output, reset key, house dog.
As preferably, communication chip in the integrated reactive power compensator of above-mentioned intelligence and transmission interface, control interface, receiving interface, and power supply between string resistance is arranged.
As preferably, the outlet of the connection in the integrated reactive power compensator of above-mentioned intelligence parallel connection has Transient Voltage Suppressor and resistance between two lines, behind the series thermal-sensitive resistance, and output again.
As preferably, the RS485 communication chip of the communication chip pin compatibility described in the integrated reactive power compensator of above-mentioned intelligence.
Beneficial effect: the utlity model has following effect,
Compensation way: according to the on-the-spot requirement of user, this product can realize that three-phase is mended altogether, three-phase divides networking modes such as benefit, mixed compensation, to reach the power controlling factor, to avoid system problems such as benefit to occur mending, owe.
Defencive function: can real-time detecting system information such as voltage, system power, the temperature inside the box, and when detecting various fault such as overvoltage, under-voltage, overcurrent, excess temperature, in time send alarm signal and excise this device to avoid fault coverage expansion.This product also possesses self-diagnostic function in addition, can be convenient to field failure and search in faults such as interfacial reaction network services.
Measure and keep watch on: system parameterss such as ability real-time detecting system voltage, system power, system power, power factor, frequency, state is moved back in the throwing that reaches device alarm type, every phase capacitor.
Definite value is set: through charactron and operation push-button, the user can make amendment to definite values such as unit address, installed capacity, protection threshold values.
Communication interface: device also has the RS485 interface, is used to realize the MANET function of many table apparatus.The collaborative work of many table apparatus is to realize that three-phase is mended altogether, three-phase divides various networking modes such as benefit, mixed compensation.
With respect to other compensation arrangement, have more following characteristics:
Operating passing zero: realize fracture voltage zero passage input, the excision of branch current zero passage, alleviated impulse current, significantly improved the useful life of capacitor and fling-cut switch to capacitor.
Modular construction: this product has been realized standardization, modularization, and the mode that when group screen, has adopted building blocks to pile up has characteristics such as wiring is simple, easy to maintenance, dilatation is convenient.
Intelligent network: this product has the function of MANET, when many capacitor networkings, be main frame by minimum one of address code wherein, and all the other are slave, formation low-voltage reactive power automatic control system; Withdraw from if any the individual capacitors failover, will in the residual electricity container, generate new main frame, form a new system.
Reliability is high: need not controller, adopt the decentralized control pattern, stop to cause the whole system paralysis because of controller failure.
Description of drawings
Fig. 1 the utility model the communicating circuit sketch map
Fig. 2 communicating circuit sketch map of the prior art
The control structure sketch map of Fig. 3 the utility model
Embodiment
Below in conjunction with accompanying drawing, the enforcement of the utility model is specified:
Embodiment 1
According to structure shown in Figure 3; Assemble an integrated reactive power compensator of intelligence; Comprise central controller, temperature sampling device, communicating circuit, AD sampling A, combination switch, display panel and keypad, central controller is connected with temperature sampling device, communicating circuit, AD sampling A, combination switch respectively; Central controller also is connected with the detection of power loss device; Communicating circuit is the RS485 circuit, is made up of two identical communication chips, and physical circuit figure is as shown in Figure 1; The transmission enable signal pin 3 of one of them communication chip is connected with control interface, signal sends pin 4 and is connected with transmission interface; The lower margin 5 of communication chip, supply pin 8 are respectively the lower margin and the supply pin of power supply; The signal of another communication chip receives pin 1 and is connected with receiving interface; Signal sends pin 4 and is connected with power supply; Receive enable signal pin 2, send enable signal pin 3 and chip lower margin 5 connection ground connection; Export after the connection 6 of two identical communication chips and the outlet parallel connection of connection 7.
For the better the utility model of realizing, central controller also is connected with alarming node output, reset key, house dog.Simultaneously communication chip and transmission interface, control interface, receiving interface, and power supply between string resistance is arranged, can regulate electric current, prevent problem appearance such as electric current is excessive; Be connected with thermistor after the outlet parallel connection of connection 6 and connection 7, again output.The lower margin 5 of communication chip be connected with supply pin 8 and the communication chip of ground connection in; Lower margin 5 is the ground and the supply pin of the power supply of chip with supply pin 8; And Transient Voltage Suppressor is added between connection 6 and the connection 7 and shields, simultaneously, for increase driving force respectively with connection 6 connecting resistances to power supply; Draw on carrying out, connection 7 ground connection are carried out drop-down.
After the integrated reactive power compensator of intelligence powered on, each installed through after self UID (numbering of self is solidificated in an inside) formation random delay time (between 2 seconds-10 seconds) and reports UID, receives " UID reports " frame that self sends when device; Think that then this frame successfully sends, and does not redispatch, as does not receive; Then, report UID after the time-delay, when device is received " UID reports " frame that other devices send with random number of regeneration; Insert the UID tabulation of self, after 2 minutes, from the UID tabulation, seek the minimum device of UID; If oneself is then established certainly as main frame, otherwise establishes certainly as slave.After confirming main frame, host computer polls is from machine information.
If have only one, this is main frame, and main frame is according to sampled signal; Judging whether needs to drop into power capacitor, then controls the composite switch module conducting if need to drop into, and its input of corresponding indication is arranged in the demonstration; If need the excision power capacitor, then control circuit output signal breaks off combination switch.
If have many together; Then main frame is according to sampled signal; Judge that through control strategy which platform slave needs the switching power capacitor, send switching then and order, after slave is received the switching order to corresponding slave; Control circuit controls the conducting of combination switch or cuts out, and control strategy generally adopts switching cycle.
For guaranteeing " UID reports " frame that success receives that any device sends, the bus free time that device only detects about 1s could be sent any frame.That is to say at interval must be more than 1s between any frame that occurs on the bus.This has also caused the transmission data to await a response and has needed 1s at least.
RS485 telecommunication circuit between many integrated reactive power compensators of intelligence has the function of internal loopback, to carry out carrier sense, can reduce the communication conflict, and can realize exempting to establish the MANET function of address.
The like product adhoc mode is: location, a tableland must be set, when finding oneself to be address 1, be exactly main frame, otherwise be exactly slave, the back constant time lag that powers on is sent own information to address of host.This kind method need be provided with the address, and the carrierfree monitor function, and communication conflict possibility is bigger, need repeat transmission information, and the communication bus utilance is not high.
Whether general RS485 can only send or accept simultaneously, and its circuit is as shown in Figure 2, and whether it can not monitor on 485 buses busy, have other data sending reception.And the utility model then can be realized the internal loopback function, can carry out the data monitoring on the communication line, just can send data when guaranteeing to be the free time on 485 circuits, avoids the communication conflict like this, realizes exempting to establish the MANET function of address.
Claims (5)
1. intelligent integrated reactive power compensator; Comprise central controller, temperature sampling device, communicating circuit, AD sampling A, combination switch, display panel and keypad, central controller is connected with temperature sampling device, communicating circuit, AD sampling A, combination switch respectively; It is characterized in that central controller also is connected with the detection of power loss device;
Described communicating circuit is the RS485 circuit, is made up of two identical communication chips;
The transmission enable signal pin (3) of one of them communication chip is connected with control interface, signal sends pin (4) and is connected with transmission interface; The lower margin of communication chip (5), supply pin (8) are respectively the lower margin and the supply pin of power supply;
The signal of another communication chip receives pin (1) and is connected with receiving interface; Signal sends pin (4) and is connected with power supply; Receive enable signal pin (2), send enable signal pin (3) and chip lower margin (5) connection ground connection;
Export after the outlet parallel connection of the connection of two identical communication chips (6,7).
2. the integrated reactive power compensator of intelligence according to claim 1 is characterized in that central controller also is connected with alarming node output, reset key, house dog.
3. the integrated reactive power compensator of intelligence according to claim 1, it is characterized in that communication chip and transmission interface, control interface, receiving interface, and power supply between string resistance is arranged.
4. the integrated reactive power compensator of intelligence according to claim 1 is characterized in that the outlet parallel connection of connection (6,7), and Transient Voltage Suppressor and resistance are arranged between two lines, behind the series thermal-sensitive resistance, and output again.
5. the integrated reactive power compensator of intelligence according to claim 1 is characterized in that the RS485 communication chip of described communication chip pin compatibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120333299 CN202197108U (en) | 2011-09-06 | 2011-09-06 | Intelligent integrated reactive compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120333299 CN202197108U (en) | 2011-09-06 | 2011-09-06 | Intelligent integrated reactive compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202197108U true CN202197108U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120333299 Expired - Lifetime CN202197108U (en) | 2011-09-06 | 2011-09-06 | Intelligent integrated reactive compensation device |
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| CN (1) | CN202197108U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441509A (en) * | 2013-08-01 | 2013-12-11 | 上海华艾软件有限公司 | Reactive power compensation cabinet and control method |
| CN105141491A (en) * | 2015-09-23 | 2015-12-09 | 杭州得诚电力科技有限公司 | RS485 communication circuit capable of achieving self-sending and self-receiving and method |
| CN106950890A (en) * | 2017-04-28 | 2017-07-14 | 南京搜新智能科技有限公司 | Intelligent switching circuit based on double 485 communications |
| CN112688363A (en) * | 2020-12-21 | 2021-04-20 | 青岛鼎信通讯股份有限公司 | Multi-machine parallel connection method of electric energy quality control equipment based on ad hoc network scheduling |
-
2011
- 2011-09-06 CN CN 201120333299 patent/CN202197108U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441509A (en) * | 2013-08-01 | 2013-12-11 | 上海华艾软件有限公司 | Reactive power compensation cabinet and control method |
| CN105141491A (en) * | 2015-09-23 | 2015-12-09 | 杭州得诚电力科技有限公司 | RS485 communication circuit capable of achieving self-sending and self-receiving and method |
| CN105141491B (en) * | 2015-09-23 | 2023-05-09 | 杭州得诚电力科技股份有限公司 | RS485 communication circuit and method for realizing spontaneous self-receiving |
| CN106950890A (en) * | 2017-04-28 | 2017-07-14 | 南京搜新智能科技有限公司 | Intelligent switching circuit based on double 485 communications |
| CN112688363A (en) * | 2020-12-21 | 2021-04-20 | 青岛鼎信通讯股份有限公司 | Multi-machine parallel connection method of electric energy quality control equipment based on ad hoc network scheduling |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310012 Building No. 7, 1 West Road, Hangzhou, Zhejiang, Xihu District Patentee after: Zhejiang Huayun Information Technology Co., Ltd. Address before: 310012 Building No. 7, 1 West Road, Hangzhou, Zhejiang, Xihu District Patentee before: Zhejiang Creaway Automation Engineering Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
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| CX01 | Expiry of patent term |