CN202602298U - Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line - Google Patents
Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line Download PDFInfo
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- CN202602298U CN202602298U CN 201220284801 CN201220284801U CN202602298U CN 202602298 U CN202602298 U CN 202602298U CN 201220284801 CN201220284801 CN 201220284801 CN 201220284801 U CN201220284801 U CN 201220284801U CN 202602298 U CN202602298 U CN 202602298U
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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 voltage-regulating capacitance-regulating type reactive compensation complete device of a high voltage line. The device comprises a box body and a current transformer, wherein a voltage regulator, a controller and a capacitor are arranged inside the box body, the voltage regulator is connected with the high voltage line and is connected with the controller and the capacitor, the voltage regulator receives a command of the controller to regulate the voltage output and change the voltage of a capacitor end so as to change the output of the capacitor capacity, the current transformer is in series connection with a front end of an access point of the voltage regulator on the high voltage line, the controller is connected with the high voltage line through the current transformer, collects the voltage and the current of the high voltage line, calculates the active power and the reactive power of the high voltage line and sends the control command to the voltage regulator to regulate gears of the voltage regulator, and the capacitor is used for capacitive compensation. The voltage-regulating capacitance-regulating type reactive compensation complete device of the high voltage line has the advantages of being free of switching inrush current during voltage regulation, free of impact on a power grid, convenient to regulate and maintain and the like.
Description
Technical field
The utility model relates to a kind of reactive power compensation device, especially a kind of high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device that is used for electric power system.
Background technology
Power factor and reactive balance are the important symbols of weighing power grid quality.The situation that China's rural power grids ubiquity radius of electricity supply is long, quality of voltage is poor, power factor is low.Do not obtain effective balance if there is function, can not only reduce the loss of electrical network greatly, and have great importance improving quality of voltage.But the most of urban and rural power grids power factor of China is on the low side at present, and is idle very uneven.Therefore improve power factor of electric network, balance is idle, improve quality of voltage, reduce line loss, in electric power system, have great significance.
National line has 2 types of reactive power compensation patterns now: a kind of for being and connecing the capacitor fixed compensation, can not realize the dynamic tracking compensation.The 2nd, the dynamic tracking compensation, progression can not be accomplished smart thin benefit of mending very little.
Domesticly use more automatic compensation type to be high-pressure reactive compensation device on the circuit post at present; Mainly form by capacitor group, switch and controller etc.; Be connected in parallel on the industrial frequency AC three-phase high-voltage overhead transmission line, be used for improving power factor, adjustment network voltage, reduce line loss.Major part is to adopt the mode line attachment of fixedly access, manual switching or automatic switching.Fixedly the line building-out unit of access type does not carry out switching after inserting transmission line, so apparatus structure is simple, cost of investment is low, and comprehensive cost is low, but therefore can't change idle the exerting oneself of capacitor group according to the changes in demand of circuit load or burden without work yet.Shunt Capacitor Unit idle square (the Qc=2 π CU with system frequency and capacitor terminal voltage that exerts oneself
2) be directly proportional.If line voltage operation is on the low side, idle exerting oneself but significantly reduces, and line voltage moves when higher, can improve exerting oneself of capacitor again greatly, so not only can't adjust network voltage, also shortening capatcitor life-span greatly.
The line building-out unit of switch on-off formula is to throw through the break-make of control switch to move back the capacitor group, and the drawback of 2 aspects is arranged.At first, the capacitor group can produce the inrush phenomenon greater than 15 times of rated current when dropping into, produce inevitable switching overvoltage during excision.Such mode has not only reduced life of capacitors (about 2～5 years), also electrical network has been caused very big impact.Secondly; Too fast like circuit load or burden without work fluctuation, circuit breaker, on-load switch action are too frequent like this, and owing to the extreme difference of switching is bigger; Be easy to make circuit to be in the state of mending or owing to mend for a long time; There was a mechanical failure simultaneously also to be easy to make switch, so not only reduced the action security reliability of switch, also improved the apparatus maintenance cost greatly.
The utility model content
The utility model is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device is provided, to avoid occurring inrush phenomenon in the pressure regulation process, to be convenient to regulate and be easy to maintenance and repair.
The utility model at first provides a kind of high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device.
High-tension line pressure regulating and capacitance regulating formula reactive compensation complete device, its design feature be, comprises the casing summation current transformer, in said casing, is provided with voltage regulator, controller and capacitor;
Said voltage regulator is connected on the high-tension line, and is connected with controller with capacitor, and voltage regulator is accepted the instruction of controller, and regulation voltage output also changes the output of the voltage of capacitor end with the change condenser capacity;
Said current transformer is serially connected in the access point front end of voltage regulator on high-tension line;
Said controller is connected with high-tension line through current transformer; Gather the voltage and the electric current of high-tension line; Calculate the active power and the reactive power of high-tension line, and produce control command, control command is sent to voltage regulator the gear of voltage regulator is regulated;
Said capacitor is used for high-tension line is carried out capacitive compensation.
The design feature of the high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device of the utility model also is:
Also be provided with lightning arrester in the said casing; One end of said lightning arrester is connected between said voltage regulator and the capacitor, other end ground connection; Also be provided with fuse between said voltage regulator and the high-tension line.
Compared with present technology, the beneficial effect of the utility model is embodied in:
The voltage regulator extreme difference is little, compensate meticulous, during do not have inrush phenomenon in the process of pressure regulation, do not produce switching overvoltage yet, electrical network is not had any impact.Casing adopts stainless steel material to be welded, and has advantages such as safety is good, water-resistant performance is good, and casing also adopts the plastic-blasting anti-corrosive technology to handle, and good looking appearance is generous, and thermal diffusivity is good, is convenient to the installation of this device on high-tension line.The reactive compensation complete device of the utility model only is connected with high-tension line with two current sample connecting lines through three power lines, and casing is rack-mount, and is easy to connect with high-tension line, and Installation and Debugging are convenient, and maintenance maintenance is convenient.Controller disposes radio communication function simultaneously, can send related data to control centre, is convenient to the unified management monitoring, is convenient to compensation arrangement is carried out centralized monitor.
The high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device of the utility model has and does not have inrush phenomenon in the process of pressure regulation, electrical network is not had any impact, is convenient to regulate and advantages such as maintenance and repair.
Description of drawings
Fig. 1 is the schematic diagram of the high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device of the utility model.
Below pass through embodiment, and combine accompanying drawing that the utility model is described further.
Embodiment
Referring to Fig. 1, high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device comprises the casing summation current transformer, in said casing, is provided with voltage regulator, controller and capacitor;
Said voltage regulator is connected on the high-tension line, and is connected with controller with capacitor, and voltage regulator is accepted the instruction of controller, and regulation voltage output also changes the output of the voltage of capacitor end with the change condenser capacity;
Said current transformer is serially connected in the access point front end of voltage regulator on high-tension line;
Said controller is connected with high-tension line through current transformer; Gather the voltage and the electric current of high-tension line; Calculate the active power and the reactive power of high-tension line, and produce control command, control command is sent to voltage regulator the gear of voltage regulator is regulated;
Said capacitor is used for high-tension line is carried out capacitive compensation.
Current transformer is connected on the high-tension line, converts high-tension current into secondary current that controller can receive and measure.Controller is gathered the electric current of current transformer output and the system voltage of voltage regulator output; And according to parameters such as the voltage that collects, electric currents; And then analytical calculation obtains the electric parameters such as active power, reactive power and power factor of high-tension line, and generates control corresponding instruction according to these electric parameters, and control command is sent to voltage regulator; Make the automatic regulation stall of voltage regulator, the output of control voltage.Voltage regulator has 9 grades of voltage outputs, and corresponding capacitor also has 9 kinds of capacity that circuit is carried out reactive power compensation.The voltage regulator extreme difference is little, compensate meticulous, during do not have inrush phenomenon in the process of pressure regulation, do not produce switching overvoltage yet, electrical network is not had any impact.Casing adopts stainless steel material to be welded, and has advantages such as safety is good, water-resistant performance is good, and casing also adopts the plastic-blasting anti-corrosive technology to handle, and good looking appearance is generous, and thermal diffusivity is good, is convenient to the installation of this device on high-tension line.The reactive compensation complete device of the utility model only is connected with high-tension line with two current sample connecting lines through three power lines, and casing is rack-mount, and is easy to connect with high-tension line, and Installation and Debugging are convenient, and maintenance maintenance is convenient.Controller disposes radio communication function simultaneously, can send related data to control centre, is convenient to the unified management monitoring, is convenient to compensation arrangement is carried out centralized monitor.
Also be provided with lightning arrester in the said casing; One end of said lightning arrester is connected between said voltage regulator and the capacitor, other end ground connection; Also be provided with fuse between said voltage regulator and the high-tension line.Through lightning arrester and fuse, can when thunderbolt or overload, shield, improve the security performance of system.
The high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device of the utility model; Adopt the fixing access of capacitor group, controller acquisition system voltage and line current, analysis meter are calculated each item electric parameters such as system's active power, reactive power; According to control strategy; Voltage regulator is carried out gear regulate, change the terminal voltage of capacitor, thereby change the output capacity of capacitor.According to Q=2 π CU
2Principle, capacitor group C value total amount is constant, when terminal voltage drops to 50%U from 100%U; Its output capacity just can change between (100% ~ 25%) * Q, and extreme difference is little, compensates meticulous; There is not inrush phenomenon in the process of pressure regulation during this time, do not produce switching overvoltage yet, electrical network is not had any impact.
Through 9 gear voltage regulators are regulated, voltage regulator has the output of 9 gear voltages, and fixed capacitor is corresponding also to have 9 kinds of capacity to compensate circuit is idle, capacitor output capacity see the following form (is example with capacitor installed capacity 300kvar):
Voltage regulator rated output capacity computational chart
Reactive power compensator is mounted on the ultra-high-tension power transmission line, and maintenance and management are very inconvenient, for guaranteeing the reactive power compensator reliability service; The integral structure of my company's design; With capacitor, voltage regulator and other parts are installed in the whole casing, and body structure has fully taken into account fail safe and radiating condition; Guaranteed device failure-free operation for a long time; When equipment is installed casing is placed on the mounting bracket, only needs to introduce three-phase power line and two sample rate current lines, Installation and Debugging and convenient.
Convenient for strengthening management with data statistics; I have powerful communication function by the controller of company's configuration; Through wireless technology transfer of data is arrived relevant departments; My company backstage analyzes and management software will be brought into play its monitoring, statistics and controlled function, and the running status of device and working condition will come into plain view.
The large tracts of land of circuit pressure regulating and capacitance regulating formula reactive compensation complete device is used, and will improve power factor of electric network at high-tension line, balance is idle, improve quality of voltage, reduce aspects such as line loss has important positive effect.
Claims (2)
1. high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device is characterized in that, comprises the casing summation current transformer, in said casing, is provided with voltage regulator, controller and capacitor;
Said voltage regulator is connected on the high-tension line, and is connected with controller with capacitor, and voltage regulator is accepted the instruction of controller, and regulation voltage output also changes the output of the voltage of capacitor end with the change condenser capacity;
Said current transformer is serially connected in the access point front end of voltage regulator on high-tension line;
Said controller is connected with high-tension line through current transformer; Gather the voltage and the electric current of high-tension line; Calculate the active power and the reactive power of high-tension line, and produce control command, control command is sent to voltage regulator the gear of voltage regulator is regulated;
Said capacitor is used for high-tension line is carried out capacitive compensation.
2. high-tension line pressure regulating and capacitance regulating formula reactive compensation complete device according to claim 1 is characterized in that, also is provided with lightning arrester in the said casing; One end of said lightning arrester is connected between said voltage regulator and the capacitor, other end ground connection; Also be provided with fuse between said voltage regulator and the high-tension line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284801 CN202602298U (en) | 2012-06-15 | 2012-06-15 | Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284801 CN202602298U (en) | 2012-06-15 | 2012-06-15 | Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line |
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| CN202602298U true CN202602298U (en) | 2012-12-12 |
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| CN 201220284801 Expired - Lifetime CN202602298U (en) | 2012-06-15 | 2012-06-15 | Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490432A (en) * | 2013-09-30 | 2014-01-01 | 桂林电子科技大学 | Reactive compensation device and method for partially regulating voltages and capacitance of three-phase four-wire power grid |
| CN107465200A (en) * | 2017-09-30 | 2017-12-12 | 孙长坡 | Reactive power compensation device and system |
-
2012
- 2012-06-15 CN CN 201220284801 patent/CN202602298U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490432A (en) * | 2013-09-30 | 2014-01-01 | 桂林电子科技大学 | Reactive compensation device and method for partially regulating voltages and capacitance of three-phase four-wire power grid |
| CN103490432B (en) * | 2013-09-30 | 2015-07-22 | 桂林电子科技大学 | Reactive compensation device and method for partially regulating voltages and capacitance of three-phase four-wire power grid |
| CN107465200A (en) * | 2017-09-30 | 2017-12-12 | 孙长坡 | Reactive power compensation device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Voltage-regulating capacitance-regulating type reactive compensation complete device of high voltage line Effective date of registration: 20161220 Granted publication date: 20121212 Pledgee: Anhui Changfeng rural commercial bank Limited by Share Ltd new Bengbu Road Branch Pledgor: HEFEI HUAWEI AUTOMATION CO., LTD. Registration number: 2016340000112 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171101 Granted publication date: 20121212 Pledgee: Anhui Changfeng rural commercial bank Limited by Share Ltd new Bengbu Road Branch Pledgor: HEFEI HUAWEI AUTOMATION CO., LTD. Registration number: 2016340000112 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |