CN201887482U - Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control - Google Patents
Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control Download PDFInfo
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- CN201887482U CN201887482U CN2010206793786U CN201020679378U CN201887482U CN 201887482 U CN201887482 U CN 201887482U CN 2010206793786 U CN2010206793786 U CN 2010206793786U CN 201020679378 U CN201020679378 U CN 201020679378U CN 201887482 U CN201887482 U CN 201887482U
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a dynamic reactive compensation device for transformer substation-type voltage reactive integrated control, comprising a magnetic valve reactor, a capacitor group, a transformer and a controller which comprehensively controls the magnetic valve reactor and the capacitor group; the magnetic valve reactor and the capacitor group are parallelly connected onto a system bus; and the transformer is serially connected between a voltage input end of the reactive compensation device and the system bus. The dynamic reactive compensation device for transformer substation-type voltage reactive integrated control has the advantages that through the matching with the capacitor group, the continuous electrode-less adjustment to the reactive power from inductive to capacitive can be realized, the reactive requirements and qualified voltage of the system are guaranteed, the power supply quality is improved, the range of reactive adjustment of a transformer substation can be increased, simultaneously the voltage regulation effect is achieved, the reduction of the action frequency of the tapping switch of a main transformer is facilitated, and the on-load tapping switch of the main transformer is protected.
Description
Technical field
The utility model relates to a kind of high pressure dynamic reactive compensation device, relates in particular to a kind of dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control.
Background technology
In electric power system, make its requirement that conforms with safety and economic operation in order to control busbar voltage, need on bus, drop into reactive power compensation usually.Along with increasing day by day and the raising gradually of electric pressure of system loading, variation has also taken place to the demand of reactive power in electric power system, developed into and nowadays need to compensate capacitive and perceptual idle from only compensating capacitive reactive power in the past, and requirement can be regulated continuously.On the one hand, need provide more capacitive reactive power, to satisfy the reactive requirement of industrial and mining enterprises, systems stabilisation voltage at load boom period; On the other hand, need to provide perception idle during underloading again, with the charge power of a large amount of cables of balance, safeguards system voltage is unlikely too high.Traditional switched capacitor is fixed capacitor, switch on-off capacitor, thyristor switchable capacitor etc. for example, in a very long time, be the stable important function of having brought into play of the voltage of keeping electric power system, but, no longer satisfy the higher requirement of electric power system because of its compensation is ladder, perception and some shortcomings such as capacitive reactive power, the frequent switching of switch can't be provided simultaneously.Therefore, press for perception and capacitive reactive power and can realize continuously adjustable novel reactive power compensation scheme in perception and capacitive reactive power scope can be provided.Magnet valve reactor type Reactive Compensation Device commonly used at present adopts Single-chip Controlling more, and operational capability and control rate are low, can't satisfy the requirement of response time.
Chinese patent CN 101860035A discloses a kind of reactive compensation system of thyristor control magnet valve reactor, comprise automatic control system, magnet valve reactor and filter apparatus, automatic control system is electrically connected with the magnet valve reactor, and filter apparatus is made up of a plurality of passive filtering branch roads.This reactive compensation system is taken a sample to the reactive power of network system according to voltage sampling circuit in the automatic control system and current sampling circuit, signal is sent to controller, controller is regulated the thyristor pilot angle of magnet valve reactor automatically, it is unshakable in one's determination saturated to change the control of winding direct current size, realize that reactance value is adjustable continuously, thereby realize the quick compensating action of reactive power.
But the control purpose of above-mentioned compensation arrangement does not have voltage as controlled target based on power factor or idle.And as the transformer station based on power supply, at first consider to keep voltage constant, secondly just consider reactive power compensation, satisfy the power factor requirement.So,, need a kind of response time weak point and can realize the reactive power compensator that voltage is stable at power transformation site type compensation equipment.
Summary of the invention
The purpose of this utility model is at above-mentioned defective of the prior art, a kind of dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control is provided, this device utilizes DSP to be core controller, dynamic adjustments magnet valve reactor perception is idle, and the automatic control of carrying decomposition switch gear is arranged in conjunction with the automatic switching of capacitor group and main transformer, realize the reactive power compensation demand that transient response and voltage are stable.
In order to achieve the above object, the utility model proposes a kind of dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control, comprise magnet valve reactor, capacitor group, transformer and the controller of described magnet valve reactor and described capacitor group Comprehensive Control; Described magnet valve reactor and described capacitor group are connected in parallel on the system busbar, and described transformer is serially connected between the voltage input end of described reactive power compensator and the system busbar.
The dynamic reactive compensation device of above-mentioned power transformation site type voltage power-less Comprehensive Control, described controller comprises: the CPU module, be used for the acquisition system voltage and current voltage transformer/current transformer module, to the power module of device power supply and open into/leave module and display module.
The dynamic reactive compensation device of above-mentioned power transformation site type voltage power-less Comprehensive Control, described capacitor group is made up of at least two capacitance compensation branch roads.
The dynamic reactive compensation device of above-mentioned power transformation site type voltage power-less Comprehensive Control, described capacitance compensation branch road comprises switch, reactor and electric capacity, described switch, reactor and capacitances in series.
The dynamic reactive compensation device of above-mentioned power transformation site type voltage power-less Comprehensive Control also is connected to a threephase potential transformer between described controller and the system busbar.
The dynamic reactive compensation device of above-mentioned power transformation site type voltage power-less Comprehensive Control also comprises a current transformer of connecting with described transformer between the voltage input end of described reactive power compensator and the system busbar.
The dynamic reactive compensation device of the utility model power transformation site type voltage power-less Comprehensive Control is compared with existing dynamic reactive compensation device, has following advantage:
1. by closing with the capacitor assembly.Can realize reactive power continuous electrodeless adjustable from the perception to the capacitive, guarantee that system's reactive requirement and voltage are qualified, improve power supply quality;
2. can increase the idle adjustable range of transformer station, take into account the voltage-regulation effect simultaneously, help reducing the main transformer shunting switch action frequency, protection main transformer on load tap changer.
Description of drawings
By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the utility model will become apparent and understand easily.
Fig. 1 is the utility model dynamic reactive compensation device circuit theory diagrams;
Fig. 2 is the control method flow chart of the utility model dynamic reactive compensation device;
Fig. 3 is voltage power-less Comprehensive Control " seven districts figure ";
Fig. 4 is the controller panel schematic diagram.
The drawing reference numeral explanation:
The 1-controller, 2-liquid crystal display, 3-indicator light zone, 4-operation room zone.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Figure 1 shows that the circuit theory diagrams of the dynamic reactive compensation device of the utility model power transformation site type voltage power-less Comprehensive Control, as can be seen from Figure, this device comprises magnet valve reactor L
4, capacitor group, transformer T and to described magnet valve reactor L
4Controller 1 with described capacitor group Comprehensive Control; Described magnet valve reactor L
4Be connected in parallel on the system busbar W magnet valve reactor L with described capacitor group
4And serial connection one switch DL between the system busbar W
4With a current transformer TA
2
Described transformer T is serially connected between the voltage input end P of described reactive power compensator and the system busbar W.
Also comprise a current transformer TA who connects with described transformer T between the voltage input end P of described reactive power compensator and the system busbar W
1
Described capacitor group is made up of at least two capacitance compensation branch roads.Described capacitance compensation branch road comprises switch, reactor and electric capacity, described switch, reactor and capacitances in series.Promptly be serially connected in the switch DL on the neutral point N among the figure
1, reactor L
1And capacitor C
1Form a capacitance compensation branch road, be serially connected in the switch DL on the neutral point N
2, reactor L
2And capacitor C
2Form another capacitance compensation branch road, be serially connected in the switch DL on the neutral point N
3, reactor L
3And capacitor C
2Form another capacitance compensation branch road.
Also be connected to a threephase potential transformer TV between described controller 1 and the system busbar W.
Controller in the dynamic reactive compensation device of the utility model power transformation site type voltage power-less Comprehensive Control comprises: the CPU module, be used for the acquisition system voltage and current voltage transformer/current transformer module, to the power module of device power supply and open into/leave module and display module.
The hardware of controller 1 can be divided into several big modules such as signals collecting, signal processing control, the formation of thyristor trigger impulse and driving, protection, demonstration, communication by function, has adopted back plug-in modularized design in design.Adopt ARM
7Processor and big screen LCD show parameters such as primary system winding diagram, system voltage, electric current, power factor, controllable silicon trigger angle, and have designed button and for the operation maintenance personnel microcomputerized controller has been operated.Fail safe for the operation of raising system can also be provided with cipher protection function, and the personnel that only have associated rights could be provided with parameter to system and make amendment.Human-machine interface module comes by 232 communication interfaces and CPU carries out exchanges data.Figure 4 shows that the control panel schematic diagram of controller.
Fig. 2 shows the method for utilizing this dynamic reactive compensation device to carry out reactive power compensation, may further comprise the steps:
S0
1: controller real-time acquisition system three-phase voltage signal and three-phase current signal, and according to " seven districts figure " judge voltage whether in acceptability limit and power factor whether on Be Controlled point;
S0
2: when the load reactive current changes, change the silicon controlled trigger angle, promptly change the idle size of reactor perception;
S0
3: when regulating reactor when maximum or minimum still can not satisfy system's reactive requirement, again the capacitor group is regulated;
S0
4: after regulating reactor and capacitor group, still can not satisfy system's reactive requirement, again the transformer gear be regulated.
For example: when system needs capacitive reactive power, it is idle at first to regulate magnet valve reactor perception, if magnet valve reactor conducting angle is to 180o, still need capacitive reactive power this moment, the capacitor group of closing switch, do not satisfy if capacitor group switch all drops into still, regulate the main transformer gear again and boost and satisfy reactive requirement, vice versa.
Fig. 3 shows the voltage power-less Comprehensive Control " seven districts figure " of this dynamic reactive compensation device.U among the figure
MaxAnd U
MinBe respectively and set voltage bound, Q
dFor owing idle lower limit, current idle value needs compensating reactive power during greater than this value; Q
0Be the idle upper limit, but currently idlely need the absorption system surplus idle during less than this value.△ U causes the voltage minor fluctuations for the magnet valve reactor changes an angle.
The controller strategy adopts voltage preferential, takes into account reactive power compensation, adopts reactive power compensation control seven district figure methods, and concrete each district's control is as follows:
(1) 0 district, voltage and idle all qualified is not controlled.
(2) 1 districts, voltage is qualified, and idle owing increases magnet valve reactor trigger angle, reduces the idle output of magnet valve reactor, increases capacitive reactive power output, if the magnet valve reactor outputs to maximum, then throws capacitor.
(3) 2 districts, voltage is defective, and idle owing increases magnet valve reactor trigger angle, reduces the idle output of magnet valve reactor, increases capacitive reactive power output, if the magnet valve reactor outputs to maximum, then throws capacitor, can throw as no electric capacity, boosts again.
(4) 3 districts, voltage is defective, and is idle qualified, boosts, increase magnet valve reactor trigger angle, reduce the idle output of magnet valve reactor, increase capacitive reactive power output, if the magnet valve reactor outputs to minimum, then throw capacitor by force, if voltage still can not satisfy, regulation stall boosts.
(5) 4 districts, voltage is qualified, and no merits and demerits reduce magnet valve reactor trigger angle, increase the idle output of magnet controlled reactor, reduce capacitive reactive power output, if the magnet valve reactor outputs to minimum, then cut capacitor.
(6) 5 districts, voltage is defective, and no merits and demerits reduce magnet valve reactor trigger angle, increase the idle output of magnet valve reactor, reduce capacitive reactive power output, if the magnet valve reactor outputs to minimum, then cut capacitor, if the capacitorless group can be cut, regulate the main transformer step-down.
(7) 6 districts, voltage is defective, and is idle qualified, step-down, reduce magnet valve reactor trigger angle, increase the idle output of magnet valve reactor, increase perceptual idle output, if the magnet valve reactor outputs to maximum, then cut capacitor by force, if voltage is still defective, regulation stall, step-down.
The magnet valve reactor can be realized idle continuous fine compensation, and the fine shortcoming that remedies the compensation of capacitor component level has greatly improved grid supply quality.
It should be noted that; above content is to further describing that the utility model is done in conjunction with concrete execution mode; can not assert that embodiment of the present utility model only limits to this; under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description, and these improvement or distortion drop in the protection range of the present utility model.
Claims (6)
1. the dynamic reactive compensation device of a power transformation site type voltage power-less Comprehensive Control is characterized in that:
Comprise magnet valve reactor, capacitor group, transformer and to the controller of described magnet valve reactor and described capacitor group Comprehensive Control; Described magnet valve reactor and described capacitor group are connected in parallel on the system busbar, and described transformer is serially connected between the voltage input end of described reactive power compensator and the system busbar.
2. the dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control according to claim 1, it is characterized in that: described controller comprises:
The CPU module, be used for the acquisition system voltage and current voltage transformer/current transformer module, to the power module of device power supply and open into/leave module and display module.
3. the dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control according to claim 1 is characterized in that:
Described capacitor group is made up of at least two capacitance compensation branch roads.
4. the dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control according to claim 3 is characterized in that:
Described capacitance compensation branch road comprises switch, reactor and electric capacity, described switch, reactor and capacitances in series.
5. the dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control according to claim 1 is characterized in that:
Also be connected to a threephase potential transformer between described controller and the system busbar.
6. the dynamic reactive compensation device of power transformation site type voltage power-less Comprehensive Control according to claim 1 is characterized in that:
Also comprise a current transformer of connecting between the voltage input end of described reactive power compensator and the system busbar with described transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206793786U CN201887482U (en) | 2010-12-24 | 2010-12-24 | Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206793786U CN201887482U (en) | 2010-12-24 | 2010-12-24 | Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control |
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| CN201887482U true CN201887482U (en) | 2011-06-29 |
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| CN2010206793786U Expired - Fee Related CN201887482U (en) | 2010-12-24 | 2010-12-24 | Dynamic reactive compensation device for transformer substation-type voltage reactive integrated control |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361325A (en) * | 2011-10-22 | 2012-02-22 | 淄博康润电气有限公司 | Bus reactive power optimization compensation controller |
| CN102709934A (en) * | 2012-04-17 | 2012-10-03 | 山西太钢不锈钢股份有限公司 | Electric generator grid-connection method via secondary voltage-reduction independent buses |
| CN102723719A (en) * | 2012-07-03 | 2012-10-10 | 北京国能子金电气技术有限公司 | Dynamic reactive voltage adjusting device for high voltage line and adjusting method thereof |
| CN103280818A (en) * | 2013-05-31 | 2013-09-04 | 广东电网公司江门供电局 | Transformer substation reactive voltage control method and system |
| CN109193683A (en) * | 2018-07-10 | 2019-01-11 | 国网浙江省电力有限公司电力科学研究院 | Substation's inductive reactive power abundant intensity evaluation method based on line charge ratio |
| CN110571820A (en) * | 2019-09-27 | 2019-12-13 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
-
2010
- 2010-12-24 CN CN2010206793786U patent/CN201887482U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361325A (en) * | 2011-10-22 | 2012-02-22 | 淄博康润电气有限公司 | Bus reactive power optimization compensation controller |
| CN102709934A (en) * | 2012-04-17 | 2012-10-03 | 山西太钢不锈钢股份有限公司 | Electric generator grid-connection method via secondary voltage-reduction independent buses |
| CN102723719A (en) * | 2012-07-03 | 2012-10-10 | 北京国能子金电气技术有限公司 | Dynamic reactive voltage adjusting device for high voltage line and adjusting method thereof |
| CN103280818A (en) * | 2013-05-31 | 2013-09-04 | 广东电网公司江门供电局 | Transformer substation reactive voltage control method and system |
| CN103280818B (en) * | 2013-05-31 | 2015-04-22 | 广东电网公司江门供电局 | Transformer substation reactive voltage control method and system |
| CN109193683A (en) * | 2018-07-10 | 2019-01-11 | 国网浙江省电力有限公司电力科学研究院 | Substation's inductive reactive power abundant intensity evaluation method based on line charge ratio |
| CN110571820A (en) * | 2019-09-27 | 2019-12-13 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
| CN110571820B (en) * | 2019-09-27 | 2023-03-21 | 贺辉 | Joint voltage regulation control method for multiple reactive compensation devices of transformer substation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20171224 |