CN103401254B - Monitoring device of automatic reactive compensation system for high-low voltage power distribution network - Google Patents
Monitoring device of automatic reactive compensation system for high-low voltage power distribution network Download PDFInfo
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- CN103401254B CN103401254B CN201310359526.4A CN201310359526A CN103401254B CN 103401254 B CN103401254 B CN 103401254B CN 201310359526 A CN201310359526 A CN 201310359526A CN 103401254 B CN103401254 B CN 103401254B
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
Abstract
The invention relates to a monitoring device of an automatic reactive compensation system for a high-low voltage power distribution network. The monitoring device comprises a power distribution network operation data monitoring module and an SVG module operation data monitoring module, wherein the power distribution network operation data monitoring module transmits operation parameters of the power distribution network to an SVG control module via a communication bus in real time; a temperature detection unit of the SVG module operation data monitoring module transmits detected real-time temperature values of all parts of the SVG control module to the SVG control module via a communication bus in real time; a thyristor switch capacitor bank operation parameter monitoring unit of the SVG module operation data monitoring module is used for monitoring whether a capacitor bank operates within a normal working region; a capacitor bank thyristor switch monitoring unit of the SVG module operation data monitoring module monitors the on/off state of a thyristor switch in real time, and is used for monitoring whether the thyristor switch operates normally as per a thyristor switching signal sent out by the SVG control module.
Description
Technical field
The present invention relates to a kind of monitoring device of automatic reactive compensation system for high-low voltage power distribution network.
Background technology
In high and low voltage electric distribution system, extensive Problems existing is power supply reliability, power quality problem and efficiency of transmission problem.Efficiency of transmission wherein refers to that distribution system is delivered to the electric energy of user, with the ratio of the electric energy obtained from electric power transmission network.Transfer efficiency is relevant to many factors, and one of them major issue is exactly reactive power compensation problem.Alternating current is when by actual loading, because it can not be pure capacitive or pure perception, make considerable part electric energy not do work and be consumed, become reactive power, therefore need to compensate the reactive power in circuit, this is the task that reactive power compensation has needed.
Current reactive-load compensation equipment mainly contains synchronous compensator, switch on-off fixed capacity, static reacance generator (SVG) and this four class of intelligent powerless compensation checkout gear.Wherein, the response speed of synchronous compensator is slow, and noise is large, and loss is large, and technological obsolescence, belongs to filtering technique; The response compensation way of switch on-off fixed capacity is slow, continuous controlled ability; Although SVG has technical limitation at present, belong to the minority demonstration project stage, but SVG is a kind of more advanced novel static var compensator, be the important component part of flexible flexible AC transmitting system (FACTS) technology and custom power (CP) technology, represent the developing direction of modern reactive power compensation device.
SVG type compensation arrangement adopts power factor to compare and switching, and the parameter be around mounting points controls, and cannot consider the situation optimal control of whole distribution line.SVG reactive compensation system lacks the Real-Time Monitoring to power distribution network and capacitor running status, causes the operational efficiency of system and security performance not high.Current SVG auto-compensation mode all for sampling number according to calculating exchange because lack between controller, the algorithm of employing falls behind, and controller can not the whole network ruuning situation be comprehensively that the distribution of reactive power flow is tending towards the most reasonable, and economic benefit reaches the best.
Summary of the invention
The object of the present invention is to provide a kind of monitoring device of automatic reactive compensation system for high-low voltage power distribution network, this monitoring device can be real-time the running status of monitoring high and low voltage electric distribution net and the running status of SVG device, can make reactive compensation system can automatically, accurately for power distribution network provides reactive power compensation, and ensure run safely and reliably.
To achieve these goals, the invention provides a kind of monitoring device of automatic reactive compensation system for high-low voltage power distribution network, wherein this auto-reactive compensation system has SVG module, for controlling SVG control module and the communication bus of this SVG module, this monitoring device comprises:
Operation of power networks data monitoring module, for the operational factor of Real-Time Monitoring power distribution network, this operational factor comprises voltage, electric current and frequency;
SVG module service data monitoring modular, for detecting the operational factor of each parts in SVG module in real time, described SVG module service data monitoring modular comprises temperature detecting unit, opening-closing capacitor bank operational factor monitoring means and capacitor group switching switch monitors unit;
It is characterized in that:
The operational factor of power distribution network is given this SVG control module by this transmission by this operation of power networks data monitoring module in real time, this SVG control module is according to the operational factor determination reactive power compensation amount Δ P transmitted, and according to the switching unit of this Δ P control SVG module by appropriate capacitor switching in power distribution network, to realize reactive power compensation;
The temperature detecting unit of this SVG module service data monitoring modular will detect the real-time temperature values of each parts in SVG module by transmission to this SVG control module in real time, the real-time temperature values of these each parts and set point compare by this SVG control module, if find that the temperature value of certain parts or some parts exceeds the certain threshold value of set point, then start the associated components of cooling unit to SVG module in SVG module to cool, to ensure the safe operation of reactive compensation system;
The opening-closing capacitor bank operational factor monitoring means of this SVG module service data monitoring modular, real-time detection is in terminal voltage value, the current value of the Capacitor banks of running status, and this magnitude of voltage and current value are sent to this SVG control module by this bus, for judging whether Capacitor banks operates in normal operation interval;
The capacitor group switching switch monitors unit of this SVG module service data monitoring modular, the break-make situation of real-time this fling-cut switch of detection, and this break-make situation is sent to this SVG control module by bus, for judging that switching signal that whether fling-cut switch send according to SVG control module is in normal work.
For achieving the above object, further, service data monitoring modular comprises multiple spot detecting unit, for detecting the operational factor of the multiple spot of power distribution network, to reflect the running status of power distribution network more comprehensively accurately, wherein this multiple spot detecting unit at least comprises the detecting unit at the first and last load node place being distributed in distribution line.
For achieving the above object, further, described temperature detecting unit comprises infrared temperature checkout equipment.
The monitoring device of auto-reactive compensation system provided by the invention, traditional single-point power distribution network operational parameter detection is expanded to multiple spot operational parameter detection, and then improve power distribution network real time execution parameter monitoring precision and comprehensive, be conducive to the precision and the efficiency that improve reactive power compensation; In addition, by detecting the operational factor of the temperature of each parts of SVG, the operational factor of switched capacitor and fling-cut switch in real time, ensure that the security of operation of whole system, extending the useful life of whole system.
Accompanying drawing explanation
Fig. 1 is the connection diagram of automatic reactive compensation system for high-low voltage power distribution network and power distribution network;
Fig. 2 is the monitoring device of automatic reactive compensation system for high-low voltage power distribution network of the present invention and the connection diagram of automatic reactive compensation system for high-low voltage power distribution network;
Fig. 3 is the structured flowchart of the monitoring device of automatic reactive compensation system for high-low voltage power distribution network of the present invention and itself and connection diagram;
Embodiment
See Fig. 1, the monitoring device 100 of automatic reactive compensation system for high-low voltage power distribution network is for the reactive compensation system in high and low voltage electric distribution network, in typical high and low voltage electric distribution net, comprise high-tension distributing line 300, high and low voltage electric distribution transformer 400, low-voltage distribution wire 200, wherein high-tension distributing line 300 is positioned at the high-pressure side of high and low voltage electric distribution transformer 400, low-voltage distribution wire 300 is positioned at the low-pressure side of high and low voltage electric distribution transformer 400, low-voltage distribution wire 200 is connected with multiple load 1-n, typically these loads are resistive load and inductive load.The effect of automatic reactive compensator 100 of the present invention is, for compensating the reactive power that inductive load consumes, improving power factor (PF), and maintaining the voltage stabilization of distribution network.
See 2-3, automatic reactive compensation system for high-low voltage power distribution network comprises: SVG module 2, and for providing reactive power compensation for power distribution network, it comprises: Capacitor banks 21,23,25,27, capacitor group switching unit 22,24,26,28 and cooling unit 29; Monitoring device 4, for the operational factor of Real-Time Monitoring power distribution network and SVG module 2; Communication bus 3, for the internal data communication of reactive compensation system.
Monitoring device 4 comprises: operation of power networks data monitoring module 41, and for the operational factor of Real-Time Monitoring power distribution network, this operational factor comprises voltage, electric current and frequency; SVG module service data monitoring modular 42, for detecting the operational factor of each parts in SVG module 2 in real time, described SVG module service data monitoring modular 42 comprises temperature detecting unit, opening-closing capacitor bank operational factor monitoring means and capacitor group switching switch monitors unit.
The operational factor of power distribution network is transferred to this SVG control module 1 by this communication bus 3 by this operation of power networks data monitoring module 41 in real time, this SVG control module 1 is according to the operational factor determination reactive power compensation amount Δ P transmitted, and according to the switching unit of this Δ P control SVG module by appropriate capacitor switching in power distribution network, to realize reactive power compensation.Wherein the computational methods of Δ P can adopt existing any reactive power calculating method to obtain, and voltage magnitude, current amplitude and voltage current phase difference typically can be utilized to calculate reactive power compensation amount Δ P.
The temperature detecting unit of this SVG module service data monitoring modular 42 will detect the real-time temperature values of each parts in SVG module 2 by transmission to this SVG control module 1 in real time, the real-time temperature values of these each parts and set point compare by this SVG control module 1, if find that the temperature value of certain parts or some parts exceeds the certain threshold value of set point, the associated components then starting cooling unit 29 pairs of SVG modules 1 in SVG module 2 cools, to ensure the safe operation of reactive compensation system.Described temperature detecting unit comprises infrared temperature checkout equipment.
Typically, described cooling unit 29 is made up of air cooler, is such as made up of fan group and air pipe, makes ventilating opening throughout all parts of SVG module.Ventilating opening can be set to and can control open and close by SVG control module at Duct design.Thermal part can be crossed to some targetedly like this to cool, improve cooling effectiveness and reduce energy consumption.If after startup cooling device, still detect that the temperature value of certain parts or some parts exceeds the certain threshold value of set point, then interrupted the operation of these parts by SVG control module.Such as when the first Capacitor banks 21 and the second Capacitor banks 23 1 logical operation, the temperature value of the temperature value of the second Capacitor banks 23 higher than setting detected, then start cooling unit 29 by SVG control module 1, such as start fan group, and open the ventilating opening of the second Capacitor banks 23, second Capacitor banks 23 is cooled, if through after a period of time, the temperature of the second Capacitor banks 23 is still higher than set point, then send control signal by SVG control module 1, interrupt the operation of the second Capacitor banks 23.
The opening-closing capacitor bank operational factor monitoring means of this SVG module service data monitoring modular 42 has four monitoring subelements, be respectively used to the terminal voltage value, the current value that detect the first Capacitor banks 21, second Capacitor banks 23, the 3rd Capacitor banks 25 and the 4th Capacitor banks 27 that are in running status in real time, and this magnitude of voltage and current value are sent to this SVG control module 1 by this communication bus 3, for judging whether Capacitor banks operates in normal operation interval.The mode judged can be: the terminal voltage value detected and current value and set point are compared, if difference exceedes certain threshold value, then judge that this Capacitor banks is in abnormal operating state.Wherein this first power capacitor bank 21, second power capacitor bank 23, the 3rd power capacitor bank 25 and the 4th power capacitor bank 27, this first to fourth Capacitor banks, has 10000 μ f, 1000 μ f, 100 μ f, the capacitance level of 10 μ f respectively.
The capacitor group switching switch monitors unit of this SVG module service data monitoring modular 42 has four monitoring subelements, be respectively used to the break-make situation detecting this first capacitor group switching switch 22, second capacitor group switching switch 24, the 3rd capacitor group switching switch 26 and the 4th capacitor group switching switch 28 in real time, and this break-make situation is sent to this SVG control module 1 by bus, for judging that switching signal that whether fling-cut switch send according to SVG control module is in normal work.Whether described capacitor group switching switch monitors unit has controllable silicon driving voltage and current detecting subelement, normal for the driving detecting the transistor switching unit be made up of controllable silicon.The mode judged can be: the controllable silicon driving voltage value detected and current value and set point are compared, if difference exceedes certain threshold value, then judge that this capacitor group switching switch is in abnormal operating state.
This service data monitoring modular 41 comprises multiple spot detecting unit, for detecting the operational factor of the multiple spot of power distribution network, to reflect the running status of power distribution network more comprehensively accurately, wherein this multiple spot detecting unit at least comprises and is distributed in the head end load 1 of distribution line and the detecting unit of end load n Nodes.This multiple spot detecting unit can comprise voltage detection device, current detecting equipment and phase detection apparatus.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, make some equivalent to substitute or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. a monitoring device for automatic reactive compensation system for high-low voltage power distribution network, wherein this auto-reactive compensation system has SVG module, for controlling SVG control module and the communication bus of this SVG module, this monitoring device comprises:
Operation of power networks data monitoring module, for the operational factor of Real-Time Monitoring power distribution network, this operational factor comprises voltage, electric current and frequency;
SVG module service data monitoring modular, for detecting the operational factor of each parts in SVG module in real time, described SVG module service data monitoring modular comprises temperature detecting unit, opening-closing capacitor bank operational factor monitoring means and capacitor group switching switch monitors unit;
It is characterized in that:
The operational factor of power distribution network is given this SVG control module by this transmission by this operation of power networks data monitoring module in real time, this SVG control module is according to the operational factor determination reactive power compensation amount Δ P transmitted, and according to the switching unit of this reactive power compensation amount Δ P control SVG module by appropriate capacitor switching in power distribution network, to realize reactive power compensation;
The temperature detecting unit of this SVG module service data monitoring modular in real time by the real-time temperature values of each parts in the SVG module that detects by transmission to this SVG control module, the real-time temperature values of these each parts and set point compare by this SVG control module, if find that the temperature value of certain parts or some parts exceeds the certain threshold value of set point, then the associated components of cooling unit to SVG module started in SVG module cools, if after startup cooling unit, still detect that the temperature value of these parts exceeds the certain threshold value of set point, the operation of these parts is then interrupted by SVG control module, to ensure the safe operation of reactive compensation system,
The opening-closing capacitor bank operational factor monitoring means of this SVG module service data monitoring modular, real-time detection is in terminal voltage value, the current value of the Capacitor banks of running status, and this terminal voltage value and current value are sent to this SVG control module by this communication bus, for judging whether Capacitor banks operates in normal operation interval, the mode judged is: the Capacitor banks terminal voltage value detected and current value and set point are compared, if difference exceedes certain threshold value, then judge that this Capacitor banks is in abnormal operating state;
The capacitor group switching switch monitors unit of this SVG module service data monitoring modular, the break-make situation of real-time this fling-cut switch of detection, and this break-make situation is sent to this SVG control module by communication bus, for judging that switching signal that whether fling-cut switch send according to SVG control module is in normal work;
Described capacitor group switching switch monitors unit has controllable silicon driving voltage and current detecting subelement, whether the driving for detecting the transistor switching unit be made up of controllable silicon is normal, the mode judged is: the controllable silicon driving voltage value detected and current value and set point are compared, if difference exceedes certain threshold value, then judge that this capacitor group switching switch is in abnormal operating state;
Described operation of power networks data monitoring module comprises multiple spot detecting unit, for detecting the operational factor of the multiple spot of power distribution network, to reflect the running status of power distribution network more comprehensively accurately, wherein this multiple spot detecting unit at least comprises the detecting unit at the first and last load node place being distributed in distribution line, and this multiple spot detecting unit comprises voltage detection device, current detecting equipment and phase detection apparatus.
2. the monitoring device of automatic reactive compensation system for high-low voltage power distribution network as claimed in claim 1, it is characterized in that, described temperature detecting unit comprises infrared temperature checkout equipment.
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| CN103743981B (en) * | 2014-01-17 | 2017-10-27 | 海南金盘电气有限公司 | A kind of test system of static reacance generator |
| US11016129B1 (en) | 2017-10-20 | 2021-05-25 | Alarm.Com Incorporated | Voltage event tracking and classification |
| AU2020211596A1 (en) | 2019-01-24 | 2021-08-05 | Alarm.Com Incorporated | HVAC service performance |
| CN109917222B (en) * | 2019-03-06 | 2020-12-18 | 湖北工业大学 | Device and method for comprehensive online monitoring and health state diagnosis of capacitor assembly |
| CN112485577B (en) * | 2020-12-08 | 2023-08-04 | 南京智睿能源互联网研究院有限公司 | Low-voltage testing device for power electronic equipment |
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| CN202455079U (en) * | 2011-12-08 | 2012-09-26 | 山东迪生电气股份有限公司 | Temperature control system applied to passive optimized compensation device |
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| US7091703B2 (en) * | 2004-03-04 | 2006-08-15 | American Superconductor Corporation | Dynamic reactive compensation system and method |
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| CN2773702Y (en) * | 2004-04-29 | 2006-04-19 | 江苏省电力公司泰州供电公司 | Switch fault deteting controller of compensated capacitance |
| CN101232188A (en) * | 2007-01-26 | 2008-07-30 | 陈劲游 | Method for controlling reactive-load compensation capacitor and capable of on-line detecting and reactive-load compensation controller thereof |
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