CN113937784A - Anti-harmonic low-voltage reactive power compensation device - Google Patents
Anti-harmonic low-voltage reactive power compensation device Download PDFInfo
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- CN113937784A CN113937784A CN202111220478.1A CN202111220478A CN113937784A CN 113937784 A CN113937784 A CN 113937784A CN 202111220478 A CN202111220478 A CN 202111220478A CN 113937784 A CN113937784 A CN 113937784A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The application discloses prevent harmonious type low pressure reactive power compensator includes: the device comprises a controller, a reactor, a main capacitor, a capacitance control protection module, a capacitance current protection module, a temperature control protection module and an automatic compensation module; the capacitance control protection module includes: the lightning arrester and the capacitance control protector; the lightning arrester is used for limiting overvoltage; the capacitance control protector is used for preventing harmonic interference; the capacitive current protection module includes: a capacitive current protector; the capacitance current protector is used for monitoring the overcurrent value and the real-time current value of the main capacitor; the temperature control protection module comprises: a temperature control protector and a cooler. The capacitor control protection module can reduce the interference of harmonic waves to the controller and protect the overvoltage, the capacitor control protection module can prevent harmonic currents from generating overcurrent damage to the interior of the capacitor, and the automatic compensation module can automatically supplement a loop when a load is in a light load or a no-load state, so that the power factor is improved.
Description
Technical Field
The application relates to the technical field of reactive power compensation devices, in particular to an anti-harmonic low-voltage reactive power compensation device.
Background
At present, low-voltage dynamic reactive power compensation devices are mostly installed in low-voltage public power distribution rooms and distribution lines; because the controller of the compensation device is frequently damaged, a large number of reactive compensation devices of low-voltage public power distribution rooms and distribution lines are not put into operation, and the load power factor is low.
The controller of the compensation device is often damaged and influenced by overvoltage and harmonic waves of the power system besides the influence of the ambient temperature and humidity.
Wherein, the power system overvoltage comprises lightning overvoltage and operation overvoltage; the overvoltage of the power system easily causes insulation breakdown of a circuit board and elements in the low-voltage reactive power compensation device. The harmonic effects mean: for example, the LED lamps and the energy-saving lamps used in the current resident families are harmonic sources, a large number of harmonics can be generated, and the harmonics have high-frequency harmonics and low-frequency harmonics, which can interfere with a micro-electronic circuit of a controller of the compensation device, so that the controller of the compensation device is often in a dead halt state.
In addition, the harmonic wave generates certain harmonic voltage in the low-voltage system, the harmonic voltage is superposed on the low-voltage system, the amplitude and the phase of the voltage of the low-voltage system can be continuously changed along with the change of the harmonic wave, and the sampling value of the voltage of the controller of the compensating device is inaccurate, so that the contactor of the compensating device is misoperation. Due to the influence of harmonics, the capacitors of low-voltage reactive power compensation devices are prone to appear: harmonic current amplification phenomenon, which causes overcurrent and frequent individual capacitor damage of three-phase capacitors, causes unbalanced three-phase capacitor values and serious heating of the capacitors and reactors, and causes burning out; in these cases, when the load is under light load or no load, the controller of the low-voltage reactive power compensation device cannot be used for a capacitor with a small capacity, resulting in a low load power factor.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an anti-resonance low-voltage reactive power compensation device, which is used to solve the problem that the reactive power compensation device in the existing low-voltage public power distribution room and distribution line is easily damaged due to the influence of overvoltage and harmonic of the power system.
In order to achieve the above technical object, the present application provides an anti-resonance low voltage reactive power compensation device, including: the device comprises a controller, a reactor, a main capacitor, a capacitance control protection module, a capacitance current protection module, a temperature control protection module and an automatic compensation module;
the capacitance control protection module includes: the lightning arrester and the capacitance control protector;
the lightning arrester is connected with the capacitance control protector in parallel;
the capacitance control protector is connected with the controller in series;
the lightning arrester is used for limiting overvoltage;
the capacitance control protector is used for preventing harmonic interference;
the capacitive current protection module includes: a capacitive current protector;
the capacitance current protector is sequentially connected with the reactor and the main capacitor in series, and is connected with the lightning arrester and the capacitance control protector in parallel;
the capacitance current protector is used for monitoring an overcurrent value and a real-time current value of the main capacitor, and is also used for disconnecting a current path of the main capacitor when the overcurrent value exceeds a set current value or the real-time current value meets a preset calculation requirement;
the temperature control protection module comprises: a temperature control protector and a cooler;
the temperature control protector is electrically connected with the electric reactor, the main capacitor and the cooler;
the temperature control protector is used for monitoring the temperature of the reactor and the temperature of the main capacitor, and is also used for disconnecting the current path of the reactor when the temperature of the reactor exceeds a set reactor temperature value, disconnecting the current path of the main capacitor when the temperature of the main capacitor exceeds a set main capacitor temperature value, and starting the cooler when the temperature of the reactor or the temperature of the main capacitor exceeds a set cooling value;
and the automatic compensation module is electrically connected with the capacitance control protector, the lightning arrester and the capacitance current protector.
Furthermore, the capacitance control protector comprises a high-frequency harmonic interference prevention coil, a load isolating piece and a low-frequency harmonic interference prevention coil which are sequentially connected in series.
Further, the set current value is 1.43 times of the rated current of the main capacitor.
Further, the preset calculation requirement is that the ratio of the minimum value to the maximum value of the real-time current value is less than 0.8.
Further, the reactor temperature value is set to 105 ℃.
Further, the set main capacitor temperature value is 55 ℃.
Further, the automatic compensation module comprises in series: the compensation branch circuit comprises a compensation branch circuit air switch, a compensation branch circuit capacitance current protector, a compensation branch circuit contactor and a compensation branch circuit capacitor;
the compensation branch contactor is in a normally closed state.
Further, the capacitance current protection module further includes: a conventional branch air switch and a conventional branch contactor;
the conventional branch air switch is connected with the capacitance current protector in series;
and the capacitance current protector is connected with the reactor in series through the conventional branch contactor.
According to the technical scheme, the harmonic-resistant low-voltage reactive power compensation device can reduce the interference of harmonic waves to a controller and overvoltage protection through the capacitance control protection module, can prevent harmonic currents from generating overcurrent damage to the inside of a capacitor through the capacitance control protection module, can automatically supplement a loop when a load is in a light load or a no-load state through the automatic compensation module so as to improve a power factor, and effectively solves the problem that the reactive power compensation device in the existing low-voltage public power distribution room and the distribution line is easily damaged due to the influence of overvoltage of an electric power system and the influence of harmonic waves.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic overall wiring diagram of an anti-resonance low-voltage reactive power compensation device provided in an embodiment of the present application;
fig. 2 is a schematic internal wiring diagram of a capacitance control protector in an anti-resonance low-voltage reactive power compensation device according to an embodiment of the present application;
in the figure: 1. an incoming line sampling current transformer; 2. an incoming line breaker; 3. a knife-shaped fuse switch; 4. a compensation cabinet current transformer; 5. a capacitance control protector; 6. a controller; 7. a lightning arrester; 8. a conventional bypass air switch; 9. a capacitive current protector; 10. a conventional branch contactor; 11. a reactor; 12. a main capacitor; 13. a branch capacitor; 14. a temperature control switch; 15. a temperature reducer; 16. a compensation branch air switch; 17. a compensation branch capacitance current protector; 18. a compensation branch contactor; 19. a compensation branch capacitor; 20. a temperature control protector.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, an anti-resonance low-voltage reactive power compensation device provided in an embodiment of the present application includes: the device comprises a controller 6, a reactor 11, a main capacitor 12, a capacitance control protection module, a capacitance current protection module, a temperature control protection module and an automatic compensation module.
Wherein, the electric capacity control protection module includes: the lightning arrester 7 and the capacitance control protector 5; the lightning arrester 7 is connected with the capacitance control protector 5 in parallel; the capacitance control protector 5 is connected with the controller 6 in series; the lightning arrester 7 is used for limiting overvoltage; the capacitance control protector 5 is used for preventing harmonic interference.
In particular, the arrester 7 can be a 400V zinc oxide arrester, which always acts first when the applied voltage exceeds a certain amplitude, by itself discharging a large amount of energy, limiting the overvoltage. Referring to fig. 2, the capacitance control protector 5 includes a high-frequency harmonic interference preventing line 51, a load isolator 52 and a low-frequency harmonic interference preventing coil 53 connected in series in sequence.
The inductance value of the high frequency harmonic interference preventing coil 51 may be 100 muh. The high frequency harmonics will generate a high frequency magnetic field which can be shielded by the principle that the magnetic field generated by the induced current in the coil 51 will always cancel the change in the original magnetic field. The direction of the induced current in the shield is opposite to the direction of the current in the coil, and in the space outside the shield, the magnetic field of the coil and the magnetic field generated by the induced current in the shield cancel each other out. The directions of magnetic induction lines generated by the shield and the coil are consistent between the shield and the coil, and magnetic flux generated by the coil rarely leaks out of the shield, so that the magnetic shielding effect is achieved. In addition, in the coil, the magnetic induction lines of the coil are opposite to the magnetic induction lines generated by induced current, so that the magnetic field in the coil is reduced to some extent, and further, the inductance of the coil is reduced. The high-frequency magnetic shielding has the essential condition that high-frequency induction current is generated inside the shielding body, and the magnitude of the induction current directly influences the shielding effect. The value of the induced current of the shield is proportional to the product of the current in the coil and the coupling coefficient, independent of the frequency. This aspect shows that the magnetic field generated by the induced current at high frequencies is sufficient to cancel the coil interference and act as a shield, and that when the frequency is high to some extent, the induced current no longer increases with increasing frequency.
The load isolator 52 provides a good filtering of the load input (mains supply voltage) to provide a clean supply voltage to the consumer. Another use is tamper-proofing. The load isolated by the load isolator 52 is a load in which the input winding and the output winding are electrically isolated from each other, so as to avoid the danger caused by accidentally touching a charged body (or a metal part possibly charged due to insulation damage) and the ground at the same time.
The low frequency harmonic interference prevention coil 53 may be a low voltage magnetic ring comprising a ferrite interference prevention core; the ferrite anti-interference magnetic core is an interference suppression device and can solve the problem of low-frequency interference suppression of a power line, a signal line and a connector. Specifically, the purpose of inhibiting the transmission of low-frequency interference signals along a lead is achieved by absorbing low-frequency signals and converting the absorbed energy into heat energy to be dissipated, and the resistance value component in the equivalent impedance is a function of frequency and changes along with the frequency. In the low-voltage reactive power compensation device, the low-frequency harmonic interference prevention coil 53 is used for suppressing the passage of low-order harmonic interference signals.
The capacitive current protection module includes: a capacitive current protector 9; the capacitance current protector 9 is sequentially connected with the reactor 11 and the main capacitor 12 in series, and the capacitance current protector 9 is connected with the lightning arrester 7 and the capacitance control protector 5 in parallel; the capacitance current protector 9 is used for monitoring an overcurrent value and a real-time current value of the main capacitor 12, and is also used for disconnecting a current path of the main capacitor 12 when the overcurrent value exceeds a set current value or the real-time current value meets a preset calculation requirement.
Moreover, the loop formed by the lightning arrester 7, the capacity control protector 5 and the capacity current protector 9 can comprise a plurality of groups.
Specifically, in actual operation, the capacitor easily amplifies harmonic currents, thereby generating an overcurrent. The capacitor current protector 9 can prevent the harmonic current and the harmonic from generating over-current and over-voltage damage to the inside of the capacitor, and simultaneously prevent the three-phase compensation from being unbalanced due to different damage degrees of the three-phase capacitor.
Note that the set current value may be 1.43 times the rated current of the main capacitor 12. The preset calculation requirement may be that the ratio of the minimum value to the maximum value of the real-time current value is less than 0.8. That is, when the overcurrent in the main capacitor 12 exceeds 1.43 times of the rated current or the difference between the maximum real-time current value and the minimum real-time current value divided by the maximum real-time current value exceeds 0.2, the capacitor current protector 9 will break the current path of the main capacitor 12 to cut off the power; the preset current value is calculated according to the reference standard value, and the preset calculation requirement is obtained according to the practice of the inventor; when the real-time current value meets the preset calculation requirement, the probability of the capacitor being damaged is greatly increased.
The temperature control protection module comprises: a temperature control protector 20 and a cooler 15; the temperature control protector 20 is electrically connected with the reactor 11, the main capacitor 12 and the cooler 15; the temperature-controlled protector 20 is used for monitoring the temperature of the reactor 11 and the temperature of the main capacitor 12, and also for disconnecting the current path of the reactor 11 when the temperature of the reactor 11 exceeds a set reactor temperature value, and for disconnecting the current path of the main capacitor 12 when the temperature of the main capacitor 12 exceeds a set main capacitor temperature value, and for turning on the desuperheater when the temperature of the reactor 11 or the temperature of the main capacitor 12 exceeds a set desuperheater value.
Specifically, the desuperheater 15 may be connected in series with the temperature controlled switch 14 and the branch capacitor 13; the temperature-controlled protector 20 controls the opening and closing of the cooler 15 through the temperature-controlled switch 14. In practical applications, the temperature reducer 15 may be a fan or the like, but is not limited thereto, and the temperature reducer 15 may be disposed in a direction toward the reactor 11 and the capacitor 12. Through the temperature control protection module, the main capacitor 12 and the reactor 11 can be prevented from aging due to high temperature for a long time, and the temperature of the main capacitor and the reactor can be reduced through the temperature reducer 15. The main capacitor 12 is provided with 2 temperature control switches which are normally open and normally closed, and the reactor 11 is provided with a normally closed temperature control switch. The control loop of the temperature control protection module can be a coil of a controller P outlet which is sequentially connected with a conventional branch contactor 10, a normally closed temperature control switch of a main capacitor 12, a normally closed temperature control switch of a reactor 11 and a normally closed switch of a capacitance current protector 9. Wherein, the set temperature value of the main capacitor can be 55 ℃, the set temperature value of the reactor can be 105 ℃, and the set temperature reduction value can be 40 ℃; that is, when the temperature of the main capacitor 12 reaches 55 ℃ or the temperature of the reactor 11 reaches 105 ℃, the normally closed switch will be opened. When the temperature of the main capacitor 12 and the reactor 11 reaches 40 ℃, the normally-open temperature control switch is closed, the cooler 15 is started, and the main capacitor 12 and the reactor 11 are cooled.
The automatic compensation module is electrically connected with the capacitance control protector 9, the lightning arrester 7 and the capacitance current protector 5.
Wherein, the automatic compensation module includes series connection in proper order: a compensation branch air switch 16, a compensation branch capacitance current protector 17, a compensation branch contactor 18 and a compensation branch capacitor 19; the compensation branch contactor is in a normally closed state. The capacitive current protection module further comprises: a conventional branch air switch 8 and a conventional branch contactor 10; the conventional branch air switch 8 is connected in series with the capacitance current protector 9; the capacitor current protector 9 is connected with a reactor 11 in series through a conventional branch contactor 10.
Specifically, when the load is at a light load or no load, the controller cannot put in a capacitor with a small capacity, resulting in a low power factor of the load. The automatic supplement module can prevent the loss of compensation when the load is light load or no load. When all the conventional branch contactors 10 cannot be put into operation, the auxiliary normally-closed switches of all the conventional branch contactors 10 are in a normally-closed state, and the coil circuit of the compensation branch contactor 18 is connected, so that the automatic compensation module is put into operation. Wherein the compensated capacity will be designed according to the reactive capacity when the loop is unloaded.
The anti-harmonic low-voltage reactive power compensation device provided by the embodiment further comprises an incoming line sampling current transformer 1 and an incoming line breaker 2 which are connected with the bus; the capacitance control protector 5, the lightning arrester 7, the capacitance current protector 9 and the automatic supplement module are all in series connection, and are all connected with a compensation cabinet current transformer series bus through the fuse switch 3.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (8)
1. An anti-resonance low-voltage reactive power compensation device, comprising: the device comprises a controller, a reactor, a main capacitor, a capacitance control protection module, a capacitance current protection module, a temperature control protection module and an automatic compensation module;
the capacitance control protection module includes: the lightning arrester and the capacitance control protector;
the lightning arrester is connected with the capacitance control protector in parallel;
the capacitance control protector is connected with the controller in series;
the lightning arrester is used for limiting overvoltage;
the capacitance control protector is used for preventing harmonic interference;
the capacitive current protection module includes: a capacitive current protector;
the capacitance current protector is sequentially connected with the reactor and the main capacitor in series, and is connected with the lightning arrester and the capacitance control protector in parallel;
the capacitance current protector is used for monitoring an overcurrent value and a real-time current value of the main capacitor, and is also used for disconnecting a current path of the main capacitor when the overcurrent value exceeds a set current value or the real-time current value meets a preset calculation requirement;
the temperature control protection module comprises: a temperature control protector and a cooler;
the temperature control protector is electrically connected with the electric reactor, the main capacitor and the cooler;
the temperature control protector is used for monitoring the temperature of the reactor and the temperature of the main capacitor, and is also used for disconnecting the current path of the reactor when the temperature of the reactor exceeds a set reactor temperature value, disconnecting the current path of the main capacitor when the temperature of the main capacitor exceeds a set main capacitor temperature value, and starting the cooler when the temperature of the reactor or the temperature of the main capacitor exceeds a set cooling value;
and the automatic compensation module is electrically connected with the capacitance control protector, the lightning arrester and the capacitance current protector.
2. The harmonic-proof low-voltage reactive power compensation device according to claim 1, wherein the capacitance control protector comprises a high-frequency harmonic interference prevention coil, a load isolator and a low-frequency harmonic interference prevention coil which are connected in series in sequence.
3. The harmonic-proof low-voltage reactive power compensation device according to claim 1, wherein the set current value is 1.43 times of the rated current of the main capacitor.
4. The harmonic-proof low-voltage reactive power compensation device according to claim 1 or 3, wherein the preset calculation requirement is that the ratio of the minimum value to the maximum value of the real-time current value is less than 0.8.
5. The harmonic-proof low-voltage reactive power compensation device according to claim 1, wherein the set reactor temperature value is 105 ℃.
6. The harmonic-proof low-voltage reactive power compensation device according to claim 1, wherein the set main capacitor temperature value is 55 ℃.
7. The anti-resonance low-voltage reactive power compensation device according to claim 1, wherein the automatic compensation module comprises in series in sequence: the compensation branch circuit comprises a compensation branch circuit air switch, a compensation branch circuit capacitance current protector, a compensation branch circuit contactor and a compensation branch circuit capacitor;
the compensation branch contactor is in a normally closed state.
8. The harmonic-resistant low-voltage reactive power compensation device according to claim 7, wherein the capacitance current protection module further comprises: a conventional branch air switch and a conventional branch contactor;
the conventional branch air switch is connected with the capacitance current protector in series;
and the capacitance current protector is connected with the reactor in series through the conventional branch contactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111220478.1A CN113937784B (en) | 2021-10-20 | 2021-10-20 | Harmonic-proof low-voltage reactive power compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111220478.1A CN113937784B (en) | 2021-10-20 | 2021-10-20 | Harmonic-proof low-voltage reactive power compensation device |
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| CN113937784A true CN113937784A (en) | 2022-01-14 |
| CN113937784B CN113937784B (en) | 2023-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2811423C1 (en) * | 2023-05-22 | 2024-01-11 | Юрий Пантелеевич Лепеха | Network interference filtering device with reactive power compensator |
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| KR20160023043A (en) * | 2014-08-21 | 2016-03-03 | (주) 디지털파워 | Power factor compensation apparatus built-in reactor protection module |
| CN205123273U (en) * | 2015-12-01 | 2016-03-30 | 山西潞安环保能源开发股份有限公司五阳煤矿 | Mine -used flameproof high pressure reactive power automatic compensation device |
| CN205377298U (en) * | 2015-12-31 | 2016-07-06 | 哈尔滨同为电气股份有限公司 | High height above sea level suppresses humorous wave mode low pressure dynamic reactive power compensation device based on TSC |
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2021
- 2021-10-20 CN CN202111220478.1A patent/CN113937784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160023043A (en) * | 2014-08-21 | 2016-03-03 | (주) 디지털파워 | Power factor compensation apparatus built-in reactor protection module |
| CN205123273U (en) * | 2015-12-01 | 2016-03-30 | 山西潞安环保能源开发股份有限公司五阳煤矿 | Mine -used flameproof high pressure reactive power automatic compensation device |
| CN205377298U (en) * | 2015-12-31 | 2016-07-06 | 哈尔滨同为电气股份有限公司 | High height above sea level suppresses humorous wave mode low pressure dynamic reactive power compensation device based on TSC |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2811423C1 (en) * | 2023-05-22 | 2024-01-11 | Юрий Пантелеевич Лепеха | Network interference filtering device with reactive power compensator |
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