CN202444414U - Wave clipper for direct-current power grid system - Google Patents
Wave clipper for direct-current power grid system Download PDFInfo
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- CN202444414U CN202444414U CN2012200664278U CN201220066427U CN202444414U CN 202444414 U CN202444414 U CN 202444414U CN 2012200664278 U CN2012200664278 U CN 2012200664278U CN 201220066427 U CN201220066427 U CN 201220066427U CN 202444414 U CN202444414 U CN 202444414U
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Abstract
The utility model discloses a wave clipper for a direct-current power grid system, belonging to the technical field of electrical engineering. An anode +KM of a direct-current power grid is connected with a point P1, a cathode -KM of the direct-current power grid is connected with a point P3, the voltage between the anode and the cathode is E, two ends of a resistor R1 are connected to the point P1 and a point P2, two ends of a capacitor C1 are connected to the points P2 and P3, a cathode of a voltage stabilizing diode V1 is connected to the point P2, an anode of V1 is connected with the point P3, two ends of a potentiometer Rp1 which is connected into a variable resistance are connected to the points P2 and P3, a cathode of a voltage stabilizing diode V2 is connected with the point P2, an anode of V2 is connected with an electrode G of a Mos (Metal Oxide Semiconductor) Triode V4, an electrode S of V4 is connected with the point P3, one end of a resistor R2 is connected with the electrode G of V4, the other end of the resistor R2 is connected with the point P3, an anode of a triode V3 is connected with the point P1, a cathode of V3 is connected with an electrode D of V4 through a resistor R3, and two ends of a piezoresistor Rv are connected to the points P1 and P3.
Description
Technical field: the utility model belongs to the electrotechnics technical field.
Background technology: in transformer station and power station network system, low-voltage direct electrical network system is arranged, its voltage has different brackets such as 48V, 110V, 220V; Provide DC power supply, this direct current network system when design and installation, to insulate for communication, protection equipment and illuminating device etc. with the earth; But in engineering practice, find; Have bigger distributed capacitance between the both positive and negative polarity of this direct current network system and the earth, no small filter capacitor of numerical value and inductance component also are installed between the both positive and negative polarity of direct current network, theory analysis and engineering practice all prove; Under the interference of extraneous and network system; In the direct current network system, can produce the higher ultra-low frequency oscillation of voltage ratio, burn the power consumption equipment of direct current network system, influence electric power netting safe running.In engineering practice, still there is not reliable protective measure at present.Engineering practice proves, for guaranteeing the direct current network system safety operation, aspect operation maintenance, is noted that 1) two of the cable sheet lead that uses in the direct current network must good earth; 2) battery room must good ventilation and is guaranteed the cleaning of batteries; The cross-over connection clipper circuit is necessary between the both positive and negative polarity of direct current network system simultaneously.
Summary of the invention: the utility model technical problem to be solved is: a kind of clipper circuit that is used for the direct current network system is provided; As the both positive and negative polarity voltage E of direct current network during greater than set point; The automatic conducting of clipper circuit; Make E be not more than set point, to guarantee to be connected on the safety of the components and parts in the direct current network system.
The utility model adopts following technical scheme: be used for the peak clipper of direct current network, adopted piezo-resistance and electronics clipping circuit; Positive pole+the KM of direct current network connects the P1 point, and the negative pole-KM of direct current network connects the P3 point, and the voltage between both positive and negative polarity is E; Two of resistor R 1 terminates on P1 and the P2 point, and two of capacitor C1 terminates on P2 and the P3 point, and the negative pole of voltage stabilizing didoe V1 is connected on the P2 point; The positive pole of V1 connects the P3 point, is connected into two of variable-resistance potentiometer Rp1 and terminates on P2 and the P3 point, and the negative pole of voltage stabilizing didoe V2 connects the P2 point; The positive pole of V2 is connected on the G utmost point of Mos triode V4, and the S utmost point of V4 connects the P3 point, the G utmost point of a termination V4 of resistor R 2; Another termination P3 point, the positive pole of diode V3 connects the P1 point, and the negative pole of V3 connects the D utmost point of V4 through resistor R 3; V4 and related elements are formed the electronics clipping circuit, and two of varistor Rv terminates on P1 and the P3 point.
Owing to adopted such scheme, make the voltage E of direct current network be not more than set point, guaranteed to be connected on the safety of the components and parts in the direct current network system.
Description of drawings: Fig. 1 is the electrical schematic diagram of the utility model.
Embodiment:, the utility model is further specified below in conjunction with accompanying drawing.The selection of components and parts in the circuit, relevant with the electric pressure of E, to the direct current network of E=220V, piezo-resistance Rv can choose the element that model is MYD-14K361+ △, and Mos pipe V4 can choose the element of 2SK1020; When adjusting, regulate Rp1, when making E=240V, the V4 conducting.
Claims (1)
1. the peak clipper that is used for the direct current network system, when the both positive and negative polarity voltage of direct current network during greater than set point, the automatic conducting of clipper circuit; To guarantee to be connected on the safety of the components and parts in the direct current network system, it is characterized in that: the positive pole+KM of direct current network connects the P1 point, and negative pole-KM connects the P3 point; Voltage between both positive and negative polarity is E, and two of resistor R 1 terminates on P1 and the P2 point, and two of capacitor C1 terminates on P2 and the P3 point; The negative pole of voltage stabilizing didoe V1 is connected on the P2 point, and the positive pole of V1 connects the P3 point, is connected into two of variable-resistance potentiometer Rp1 and terminates on P2 and the P3 point; The negative pole of voltage stabilizing didoe V2 connects the P2 point, and the positive pole of V2 is connected on the G utmost point of Mos triode V4, and the S utmost point of V4 connects the P3 point; The G utmost point of one termination V4 of resistor R 2, another termination P3 point, the positive pole of diode V3 connects the P1 point; The negative pole of V3 connects the D utmost point of V4 through resistor R 3, and V4 and related elements are formed the electronics clipping circuit, and two of varistor Rv terminates on P1 and the P3 point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200664278U CN202444414U (en) | 2012-02-27 | 2012-02-27 | Wave clipper for direct-current power grid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200664278U CN202444414U (en) | 2012-02-27 | 2012-02-27 | Wave clipper for direct-current power grid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444414U true CN202444414U (en) | 2012-09-19 |
Family
ID=46825844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200664278U Expired - Fee Related CN202444414U (en) | 2012-02-27 | 2012-02-27 | Wave clipper for direct-current power grid system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202444414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737369A (en) * | 2020-12-30 | 2021-04-30 | 江苏东方四通科技股份有限公司 | High-precision conversion direct-current switching power supply |
-
2012
- 2012-02-27 CN CN2012200664278U patent/CN202444414U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737369A (en) * | 2020-12-30 | 2021-04-30 | 江苏东方四通科技股份有限公司 | High-precision conversion direct-current switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20140227 |