CN205039547U - Reactive power compensation device - Google Patents
Reactive power compensation device Download PDFInfo
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- CN205039547U CN205039547U CN201520737635.XU CN201520737635U CN205039547U CN 205039547 U CN205039547 U CN 205039547U CN 201520737635 U CN201520737635 U CN 201520737635U CN 205039547 U CN205039547 U CN 205039547U
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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
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- 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 power compensation device, including sensor interface terminal, compensation output terminal, control module, at least one compensates the module, each compensates the compensation port of module is connected with compensation output terminal through first bus, and communication ports passes through the second bus and is connected with control module, sensor interface terminal and control module's input interface connection, the sensor interface terminal is used for receiving the electric signal in outside compensation return circuit, control module acquires the reactive compensation demand according to this electric signal to the switching of control compensation module, the compensation capacity that the compensation module provided sends through compensation output terminal treats the compensation network, under control module's effect, but each compensate the module can alone operation collaborative work again, arrange combination control to the compensation module by control module, make reactive power compensation device's compensation capacity refine as far as possible, the utility model provides a reactive power compensation device has that the compensation precision is high, nimble controllable, the long service life's of compensation capacity characteristics.
Description
Technical field
The utility model belongs to technical field of electric power, more specifically, relates to a kind of reactive power compensator.
Background technology
At present, in electric power system, reactive power compensator is used in a large number.Early stage compensation arrangement mostly is fixed capacity and compensates, and this extensive compensation way, cannot reach desirable compensation effect, when load or burden without work fluctuation is larger, there is serious undercompensation and overcompensation problem; Nearest reactive power compensation technology is target mainly with dynamic reactive balance, and compensation effect is fine, but technical sophistication, realize difficulty larger; More crucially, because dynamic compensation is target with full remuneration, the actuator of compensation arrangement is in the middle of motion in the moment, has influence on the useful life of equipment to a great extent.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of reactive power compensator, utilize the multistage single low capacity compensating unit of many groups to build complete compensator, solve the technical problem that traditional fixed capacity compensation arrangement compensation precision is low, useful life holds.
For achieving the above object, according to an aspect of the present utility model, provide a kind of reactive power compensator, comprise sensor interface terminal, compensate lead-out terminal, control module, at least one compensating module;
Sensor interface terminal is connected with the input interface of control module; The compensation port of each compensating module is connected with compensation lead-out terminal by the first bus, and the communication port of each compensating module is connected with the communication interface of control module by the second bus;
Sensor interface terminal is for receiving the electric signal in external compensation loop; Control module obtains reactive power compensation demand, according to the switching of this reactive requirement amount control and compensation module according to this electric signal; The compensation capacity that compensating module provides is sent to electrical network to be compensated by compensating lead-out terminal;
This device only provides sensor interface terminal, and is realized the collection of compensation circuit electric signal by external transducer; Transducer can be selected according to demand, improve the adaptability of reactive power compensator;
When comprising multiple compensating module, the compensation port of each compensating module all hangs in the first bus, is all connected with compensation lead-out terminal by the first bus; Communication port is all hung on the second bus, is all connected with communication interface by the second bus; Each compensating module is separate, under the effect of control module, each compensating module can independent operating again can collaborative work; When collaborative work, by control module, permutation and combination is carried out to the compensation capacity of each compensating module, make the compensation capacity refinement as far as possible of reactive power compensator; Reach and both can build high-capacity reactive compensation device flexibly according to compensation capacity demand, again can the compensation capacity of the every one-level switching of refinement, reduce the object that switching electric current treats compensation network impact;
Meanwhile, because each compensating module is separate, the damage of single compensating module or disappearance are on the operation of other compensating modules or the impact of communication nothing.
Preferably, above-mentioned reactive power compensator, also comprises display and arranges module, and display arranges module and hangs on the second bus, is connected with control module; For arrange compensating module parameter, realize throwing and forced resetting the manual strong of compensating module, and show electric information and the compensating coefficient of compensating module.
Preferably, control module comprises control mainboard and communication unit; Control one end of mainboard as the input interface of control module, control the other end of mainboard and be connected with one end of communication unit, the other end of communication unit is as the communication interface of control module; Control mainboard, by communication unit, control signal is sent to the second bus, and received the compensating module feedback signal transmitted through the second bus by communication unit.
Preferably, compensating module comprises compensating unit; Be connected by the 3rd bus between the first interface of compensating unit and the compensation port of compensating module, be connected by the 4th bus between the second interface of compensating unit and the communication port of compensating module; Compensating unit, as the compensation entity of compensating module, provides reactive compensation capacity.
Preferably, compensating module comprises multiple compensating unit; Be connected by the 3rd bus between the first interface of each compensating unit and the compensation port of compensating module, be connected by the 4th bus between the second interface of each compensating unit and the communication port of compensating module;
Its control module has the function avoiding all compensating units simultaneously to drop into, and drops into simultaneously produce large shoving to avoid all compensating units;
Each compensating unit is separate, under the effect of control module, both can drop into separately and compensate, and can work in coordination with again in parallel input and compensate; Controlled the compensation capacity permutation and combination of each compensating unit by control module according to demand, make the compensation capacity refinement as much as possible of reactive power compensator; And due to each compensating unit of compensating module inside separate, the damage of single compensating unit or disappearance on the operation of other compensating units or communication without impact.
Preferably, compensating unit comprises communication module, performance element and compensation entity;
The first interface of performance element is as the first interface of compensating unit; The first interface of communication module is as the second interface of compensating unit; Second interfaces interconnect of the second interface and commmunication module of performance element; 3rd interface and the interfaces interconnect compensating entity of performance element;
Communication module receives the switching control signal that control module sends via the 4th bus; Performance element carries out debounce, isolation, amplification process to this switching control signal, obtains deciliter control signal; Realize controlling the switching of performance element by this deciliter control signal, control performance element and the compensation capacity compensating entity is dropped into or excises electrical network to be compensated; The switching information of performance element and the compensation capacity compensating entity to control module, realize the Compensation Feedback of compensating module via communication module and the 4th bus feedback;
Communication between each compensating unit and the communication between compensating unit and control module, realized via the 4th bus by the communication module of each compensating unit.
Preferably, the second bus and the 4th bus adopt RS485 bus, iic bus or CAN; Adopt and there is the bus that fault peels off function automatically, when one of them compensating unit breaks down, automatically can peel off the communication of this compensating unit and bus, on other extensions compensating unit on the bus without impact.
Preferably, compensating unit can adopt capacitive compensation unit or inductive compensation unit.
In general, the above technical scheme conceived by the utility model compared with prior art, can obtain following beneficial effect:
(1) reactive power compensator that provides of the utility model, adopts modular design, comprises one or more compensating module; When comprising multiple compensating module, each compensating module is both separate, and can combine again collaborative work, forms packet type design; When reactive capability demand to be compensated is less, can be compensated separately by single compensating module; When reactive capability demand is comparatively large, then can be compensated by each reactive compensation module collaborative work, by control module, permutation and combination be carried out to the compensation capacity of each compensating module and control, make the compensation capacity refinement as far as possible of reactive power compensator; Reach and both can build high-capacity reactive compensation device flexibly according to compensation capacity demand, again can the compensation capacity of each group switching of refinement, reduce the object that switching electric current treats compensation network impact; This packet type design, for the distributed arrangement of reactive power compensator provides the foundation, simultaneously again for Large Copacity reactive power compensation provides a kind of cordwood system type constructing plan;
(2) reactive power compensator that provides of the utility model, its compensating module inside comprises one or more compensating unit, forms stagewise design; Can the input of refinement compensation capacity further; Can according to the fine degree of reactive capability demand, the compensating unit that each capacity progressively in input compensation module is less; Compared with the extensive compensation way compensated with traditional fixed capacity, the device that the utility model provides, on the one hand by the mode of above-mentioned classification, meticulousr input compensation unit, make the compensation of input easily maximum close to reactive capability demand, reach meticulous compensation; On the other hand, reduce the switching capacity of every one-level switching, reduce the impact of shoving that switching electric current treats compensation network, avoid reactive power compensator switching to cause large impact to electrical network;
(3) reactive power compensator that provides of the utility model, the electric information that can obtain according to sensor interface, obtains reactive capability demand; By control module according to this demand, determine quantity and the capacity of the compensating unit dropped into, and the combination of control and compensation capacity; Many groups of multistage single low capacity compensating units switching successively in order, with low capacity compensating unit cumulative come the reactive capability demand of Step wise approximation reality, reach the Quasi dynamic balance of reactive requirement, reduce under the prerequisite having compensation effect concurrently and realize difficulty, overcome dynamic reactive balancing technique complexity, realize the large problem of difficulty;
(4) reactive power compensator that provides of the utility model, the fixed capacity that the compensation entity in its compensating unit essentially remains traditional compensates, and inherits fixed capacity and compensates the feature that reliability is high, good stability, cost are low; Compensation capacity just divides by the design of packet classification formula, makes it the demand adapting to classification grouping compensation, the mode construction packet classification formula reactive compensation complete device compensated with fixed capacity, has stability and the reliability of fixed capacity compensation;
(5) reactive power compensator that provides of the utility model, the design of its packet type makes each compensating module both separate, and can combine again collaborative work; For compensation arrangement, the fault of single compensating module or excision on other compensating modules without impact, for compensating module, the fault of single compensating unit or excision on other compensating units without impact; Therefore, can according to compensation demand, control flexibly the compensating unit that drops into or compensating module, the compensating unit do not dropped into or compensating module then need not operate, thus the useful life of extension device to a great extent; And the distributed arrangement being designed to reactive power compensator of this packet type provides the foundation, simultaneously again for Large Copacity reactive power compensation provides a kind of cordwood system type building mode, compensation capacity can be adjusted flexibly, have the advantages that adaptability is high.
Accompanying drawing explanation
Fig. 1 is the system schematic of the reactive power compensator that embodiment provides;
Fig. 2 is the composition schematic diagram of compensating module 1 in embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each execution mode of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
The reactive power compensator that the utility model provides, comprises several compensating modules, control module, sensor interface terminal and compensation lead-out terminal; Preferably also comprising display arranges module;
The compensation port of compensating module is connected with compensation lead-out terminal by the first bus, and the communication port of compensating module is connected with the communication interface of control module by the second bus; Sensor interface terminal is connected with the input interface of control module; The compensation port of each compensating module all hangs in the first bus, and communication port is all hung on the second bus; Each compensating module is separate, under the effect of control module, each compensating module can independent operating again can collaborative work;
Display arrange module then for realize each compensating module optimum configurations, manual to throw by force, forced resetting, and each modular electrical information, compensating coefficient display.
Control module is the core control portions of reactive power compensator, comprises and controls mainboard and communication module; Sensor interface terminal reception external sensor gathers the compensation circuit electric signal of gained; Control mainboard to analyze this electric signal, accurately obtain the reactive power compensation demand needed for electrical network according to this electric signal; Generate switching algorithm by control mainboard, determine the compensating module of switching; And the switching of the compensating unit in each compensating module is controlled via communication module;
Compensating module in reactive power compensator carries out work with paralleling model; On the one hand, the mutually different compensating module of each compensation capacity is connected in compensating network with paralleling model, and on the other hand, the communication module of each compensating module is articulated on communication bus with paralleling model.
The reactive power compensator that embodiment provides, its system schematic as shown in Figure 1, comprises 3 compensating modules, control module, and sensor interface terminal, compensation lead-out terminal and display arrange module;
What the compensation port of compensating module 1, compensating module 2 and compensating module 3 was all in parallel hangs in the first bus, and communication port extension all in parallel on the second bus; By the second bus communication between control module and each compensating module; In embodiment, the second bus adopts RS485 bus; In practical application, the second bus can adopt iic bus according to real demand or CAN is this kind of has the bus that fault peels off function automatically.
In embodiment, the compensation total capacity of three modules is labeled as b, c, d respectively, and each compensating module can realize separately the function of reactive power compensation, also can be worked by several module cooperative, forms the maximum reactive power compensator with (b+c+d) capacity.
Shown in Fig. 2, it is the composition schematic diagram of compensating module 1 in embodiment; In embodiment, compensating module 1 comprises three mutually different compensating units of capacity; Each compensating unit comprises compensation entity, performance element, communication module; Under performance element, serial connection compensates entity, and it is interconnected to realize with other compensating units and control module via communication module;
The performance element interface of these three compensating units all hangs in the 3rd bus, and the 3rd bus is connected with the compensation port of compensating module; The communication module interface of these three compensating units all hangs in the 4th bus, and the 4th bus is connected with the communication port of compensating module; The communication module of each compensating unit receives the switching control signal that control module sends via the 4th bus; The performance element of each compensating unit carries out debounce, isolation, amplification process to the switching control signal received, and obtains deciliter control signal; Realize controlling the switching of corresponding performance element by this deciliter control signal, control performance element and the compensation capacity compensating entity is dropped into or cuts out electrical network to be compensated; The switching information of performance element and the compensation capacity compensating entity to control module, realize the Compensation Feedback of compensating module via communication module and the 4th bus feedback;
The capacity of compensating unit 1 is a, and the capacity of compensating unit 2 is 2a, and the capacity of compensating unit 3 is 4a; These three compensating units are separate, all can drop into separately and compensate, again can collaborative work; In this embodiment, the compensation entity of each compensating unit is exactly that traditional fixed capacity compensates; By controlling the compensation capacity permutation and combination of these 3 compensating units, form compensation capacity and to cover from a to 7a these seven without work value, step value is the compensating module of a; As can be seen from the compensating module 1 of embodiment, by being divided by compensation capacity, the compensation of fixed capacity is utilized to realize the dynamic adjustments of reactive capability; And due to these three compensating units separate, the damage of single compensating unit or disappearance on the operation of other two compensating units or communication without impact; Can flexible switching according to demand, the compensating unit do not dropped into need not operate, and out-of-operation compensating unit without impact, extends the useful life of compensating unit unit on other compensating units thus.
In embodiment, compensating module 1, compensating module 2 and compensating module 3 there is identical structure, difference be reactive compensation capacity.In the application of concrete electric network reactive compensation, this reactive power compensator that embodiment provides can be adopted, build the complete compensator that capacity is adjustable fasterly, and this reactive power compensator have compensation precision high, supplement capacity flexibly controlled, operational reliability is high, the feature of long service life.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a reactive power compensator, is characterized in that, comprises sensor interface terminal, compensates lead-out terminal, control module, at least one compensating module;
Described sensor interface terminal is connected with the input interface of control module; The compensation port of each compensating module is connected with described compensation lead-out terminal by the first bus, and the communication port of each compensating module is connected with the communication interface of described control module by the second bus;
Described sensor interface terminal is for receiving the electric signal in external compensation loop; Control module obtains reactive power compensation demand according to described electric signal, and according to the switching of described reactive power compensation demand control and compensation module; Under the effect of control module, each compensating module can independent operating again can collaborative work; The reactive compensation capacity that compensating module provides is sent to electrical network to be compensated by compensating lead-out terminal.
2. reactive power compensator as claimed in claim 1, is characterized in that, also comprise display and arrange module, and display is arranged module and is connected with the communication interface of control module by the second bus; For compensating module is set parameter, realize to compensating module manual strong administration forced resetting, and show electric information and the compensating coefficient of compensating module.
3. reactive power compensator as claimed in claim 1 or 2, is characterized in that, described control module comprises control mainboard and communication unit; One end of described control mainboard, as the input interface of control module, controls the other end of mainboard and is connected with one end of communication unit, and the other end of communication unit is as the communication interface of control module; Control mainboard by communication unit, control signal to be sent in the second bus, and received the compensating module feedback signal transmitted through the second bus by communication unit.
4. reactive power compensator as claimed in claim 1 or 2, it is characterized in that, described compensating module comprises compensating unit; Be connected by the 3rd bus between the first interface of compensating unit and the compensation port of compensating module, be connected by the 4th bus between the second interface of compensating unit and the communication port of compensating module.
5. reactive power compensator as claimed in claim 1 or 2, it is characterized in that, described compensating module comprises multiple compensating unit;
Be connected by the 3rd bus between the first interface of each compensating unit and the compensation port of compensating module, be connected by the 4th bus between the second interface of each compensating unit and the communication port of compensating module;
Each compensating unit is separate, and under the effect of control module, each compensating unit can drop into separately and compensate, and can work in coordination with again in parallel input and compensate;
Described control module has the function avoiding all compensating units simultaneously to drop into, and drops into simultaneously produce large shoving to avoid all compensating units.
6. reactive power compensator as claimed in claim 5, it is characterized in that, described compensating unit comprises communication module, performance element and compensation entity;
The first interface of described performance element is as the first interface of compensating unit; The first interface of communication module is as the second interface of compensating unit; Second interfaces interconnect of the second interface and commmunication module of performance element; 3rd interface and the interfaces interconnect compensating entity of performance element;
Described communication module receives the switching control signal that control module sends via the 4th bus; Performance element carries out debounce, isolation and amplification process to this switching control signal, obtains deciliter control signal; The switching of performance element is controlled by described deciliter control signal; The switching information of performance element and the compensation capacity compensating entity via communication module and the 4th bus feedback to control module.
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| CN201520737635.XU CN205039547U (en) | 2015-09-22 | 2015-09-22 | Reactive power compensation device |
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| CN201520737635.XU CN205039547U (en) | 2015-09-22 | 2015-09-22 | Reactive power compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119304A (en) * | 2015-09-22 | 2015-12-02 | 武汉华海通用电气有限公司 | Reactive power compensation apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119304A (en) * | 2015-09-22 | 2015-12-02 | 武汉华海通用电气有限公司 | Reactive power compensation apparatus |
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