CN202602270U - Novel resistance-capacitance overvoltage protector - Google Patents
Novel resistance-capacitance overvoltage protector Download PDFInfo
- Publication number
- CN202602270U CN202602270U CN 201220111095 CN201220111095U CN202602270U CN 202602270 U CN202602270 U CN 202602270U CN 201220111095 CN201220111095 CN 201220111095 CN 201220111095 U CN201220111095 U CN 201220111095U CN 202602270 U CN202602270 U CN 202602270U
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- circuit
- resistance
- protection device
- overvoltage protection
- capacity
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- 230000001012 protector Effects 0.000 title abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
Provided is a novel resistance-capacitance overvoltage protector, which comprises A, B and C phase high-voltage wiring circuits and is characterized in that each of the A, B, C phase high-voltage wiring circuits is connected in series with a fixed pressure circuit (A2) together with a circuit (A1), each fixed pressure circuit (A2) is connected in parallel with a pressure circuit (A3) and a conductive circuit (A4), the other ends of the pressure circuit (A3) and the conductive circuit (A4) are connected in parallel with a pressure equalizing circuit (A5), the other end of the pressure equalizing circuit (A5) is connected with a nonlinear resistance circuit (A6), the other end of the nonlinear resistance circuit (A6) is connected with a fixed pressure circuit (A7), the other end of the fixed pressure circuit (A7) is connected with a resistance-capacitance absorption circuit (A8), the other end of the resistance-capacitance absorption circuit (A8) is connected with a capacity storage circuit (A9), the other end of the capacity storage circuit (A9) is connected with a grounding circuit (A10), and the other end of the grounding circuit (A10) is grounded to form a capacity release circuit. The novel resistance-capacitance overvoltage protector has the advantages of being simple in structure, wide in protection range, convenient to install, high in resistance-capacitance absorption capacity, good in absorption capacity and large in discharge current capacity, and having capacity absorption ability 3-10 times greater than that of similar products.
Description
Technical field
The utility model relates to electric equipment protection device technique field, is specifically related to a kind of novel capacitance-resistance overvoltage protection device of a kind of ZWZR30-110KV and ZWZR30-35KV.
Background technology
Lightning arrester and overvoltage protection device are the equipment that topmost anti-thunder and lightning overvoltage reaches anti-switching overvoltage protection in the present power system device; Complicated, diversified according to present power grid construction and operating position; Lightning arrester and common overvoltage protection device exist protection range in practical application little; Cost is high, and absorptive capacity is little, and operational efficiency is low; Be prone to cause because of the overvoltage protection device self-capacity little; It is little and accident blast takes place to absorb energy, exists simultaneously because of the protector body damages the defective that can't protect by the protection power equipment, particularly in high-voltage system, has only at present with lightning arrester and protects lightning overvoltage and switching overvoltage protection power equipment; Common overvoltage protection device can only use at medium voltage network, and the utility model capacitance-resistance overvoltage ZWZR30-110KV efficiently solves those device requirements that need prevent the thunder and lightning overvoltage and prevent the switching overvoltage protection in the high-voltage power system.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, convenient and flexible installation, and protection range is wide; Can use in high-voltage system, the capacitance-resistance absorbability is good, and capacity is high; Discharge capacity is big, and residual voltage is low, and the life-span is long; Automatically get involved when overvoltage appears in system, capacitor adopts the dry-type capacitor environmentally safe, really realizes a kind of novel high-capacity capacitance-resistance overvoltage protection device of energy savings, environment protection.
In order to overcome the deficiency of prior art; The technical scheme of the utility model is to solve like this: a kind of novel capacitance-resistance overvoltage protection device; Comprise A, B, C phase high-voltage connection circuit; Its special character is above-mentioned A, B, C phase high-voltage connection circuit every mutually respectively with circuit one the one fixation pressure circuit that is connected in series; A said fixation pressure circuit be connected in parallel respectively a pressure circuit and a conducting channel, the said pressure circuit and conducting channel other end equalizer circuit that is connected in parallel, the said equalizer circuit other end connects nonlinear resistive network; The said nonlinear resistive network other end connects another fixation pressure circuit; Said another fixation pressure circuit other end connects resistance capaciting absorpting circuit; The said resistance capaciting absorpting circuit other end capacity storage circuit that is connected in series; The said capacity storage circuit other end earthed circuit that is connected in series, the said earthed circuit other end and the earth connect to form capacity and discharge circuit.
The utility model is compared with prior art, and is simple in structure, convenient and flexible installation, and protection range is wide; Can use in high-voltage system, the capacitance-resistance absorbability is good, and capacity is high; Discharge capacity is big, and residual voltage is low, and the life-span is long; Automatically get involved when overvoltage appears in system, capacitor adopts the dry-type capacitor environmentally safe, really realizes a kind of novel high-capacity capacitance-resistance overvoltage protection device of energy savings, environment protection.Core is when the electric power system operate as normal; Protector is failure to actuate and is stayed out of; When abnormal overvoltage appears in system voltage; Protector is got involved automatically, make by protection equipment and in the shortest time, accomplish the purpose that protected equipment is protected with opening circuit, when system voltage just often this protector withdraw from automatically.Because of the core component of protector is a non-linear resistor, the material of employing has the response speed of nanosecond, under normal operation; The high-impedance state that presents mega-ohms makes the loop current of novel capacitance-resistance overvoltage protection device minimum, plays and the electrical network buffer action; And under system's overvoltage effect; Be converted into tens low resistance states rapidly, make capacitance-resistance overvoltage protection device automatic immediate insert electrical network, play a protective role to hundreds of ohm.Really realized energy savings, automation, environment protection has reduced national grid construction and the electricity consumption enterprise update cost expenditure to equipment.The advantage of the utility model is to efficiently solve the single protection thunder and lightning effect in the high-voltage power system; Can prevent that the thunder and lightning overvoltage again can the fence operation overvoltage; Automation; Cost is low, reaches a kind of novel capacitance-resistance overvoltage protection device of protection power equipment or circuit with the method for high absorptive capacity.Its capacitance-resistance capacity absorbability is widely used in 35KV or 110KV system equipment and transformer station greater than 3～10 times of present like products.
Description of drawings
Fig. 1 is the utility model 30-35KV master TV structure sketch map;
Fig. 2 is the plan structure sketch map of Fig. 1;
Fig. 3 is the main TV structure sketch map of another embodiment of the utility model 30-35KV;
Fig. 4 is the plan structure sketch map of Fig. 3;
Fig. 5 is the utility model 66-110KV master TV structure sketch map;
Fig. 6 is the plan structure sketch map of Fig. 5;
Fig. 7 is the circuit structure signal theory diagram of the utility model;
Fig. 8 is 7 electrical schematic diagrams of figure.
Embodiment
Accompanying drawing is the embodiment of the utility model.
Below in conjunction with accompanying drawing summary of the invention is described further:
Shown in Fig. 1～8; A kind of novel capacitance-resistance overvoltage protection device; Comprise A, B, C phase high-voltage connection circuit, said A, B, C phase high-voltage connection circuit every mutually respectively with the circuit A1 fixation pressure circuit A2 that is connected in series, a said fixation pressure circuit A2 be connected in parallel respectively a pressure circuit A3 and a conducting channel A4; The said pressure circuit A3 and the conducting channel A4 other end equalizer circuit A5 that is connected in parallel, the said equalizer circuit A5 other end connects nonlinear resistive network A6; The said nonlinear resistive network A6 other end connects another fixation pressure circuit A7; Said another fixation pressure circuit A7 other end connects resistance capaciting absorpting circuit A8; The said resistance capaciting absorpting circuit A8 other end capacity storage circuit A9 that is connected in series; The said capacity storage circuit A9 other end earthed circuit A10 that is connected in series, the said earthed circuit A10 other end and the earth N connect to form capacity and discharge circuit.
Said high-voltage connection circuit crust is the above insulation sheath of the withstand voltage 50KV of insulating properties, and inner core is a copper wire, or stainless steel transition terminal block.
Said high-voltage connection circuit crust is an electrically insulating silicone rubber.
Said pressure circuit and conducting channel are that a stage clip and conductive copper sheet connect to form.
Said nonlinear resistive network is connected in series by at least ten zinc oxide resistance sheets and forms.
Said resistance capaciting absorpting circuit is connected in parallel by two capacitors and resistor at least and forms.
Said capacity storage circuit is connected to form by 20 capacitors in series at least.
Said earthed circuit connects to form with copper cash and screw rod.
High-voltage connection circuit A1 supplies the A2 conducting that is connected with system equipment A, B, C used; A2 is fixed and supplies A1 and A3, A4 to conduct electricity; A3 and A4 belong to the device that compresses and supply A2 and A5 conduction; The effect of A5 is evenly to distribute voltage and connection A3, A4 and nonlinear resistive network A6, and A6 gets involved and absorb the energy of overvoltage part automatically when system's overvoltage, and the Conversion of energy that resistance capaciting absorpting circuit A8 absorbs when A6 intervention work is the may command capacity and transfers to capacity storage circuit A9; Capacity storage circuit A9 is released into ground N through earthed circuit A10 with capacity, thereby realizes the defencive function of power equipment when system's overvoltage.
A, B, C are circuit on power system, and H is by protection equipment, and A1 is the high-voltage connection circuit.A2 is fixed and seals, and A3, A4 are compression spring and conductive copper sheet, and its structure is stage clip and copper sheet, has to compress and conducting function.A5 is that equal compressing tablet plays the equally distributed effect of a voltage; A6 is special nonlinear resistance; Be that special configuration is in series through parameter by the multi-disc zinc oxide resistance sheet; A7 is fixed and seals, and A8 is that a plurality of capacitors are connected in parallel and form capacitance-resistance and absorb electric capacity, and its effect is the overvoltage capacity that comes of absorption resistance circuit transmission and passes to capacity storage electric capacity A9.Its structure of capacity storage electric capacity A9 is to be composed in series by multiple unit capacitor, and its effect is that storage absorbs the overvoltage capacity that the circuit transfer is come through capacity.Earth lead and port A10 are made up of copper cash and screw rod, and effect is that the capacity that connection capacity memory circuit and ground wire (N or greatly) are accomplished the overvoltage part discharges.
In sum, wherein nonlinear resistive network A6 to being sampled by protection equipment system for use in carrying voltage, passes through resistance capaciting absorpting circuit A8 in real time again, capacity storage circuit A9, and earthed circuit A10 forms the power-frequency discharge circuit, realizes the reliably protecting to equipment.
Claims (8)
1. novel capacitance-resistance overvoltage protection device; Comprise A, B, C phase high-voltage connection circuit; It is characterized in that above-mentioned A, B, C phase high-voltage connection circuit every mutually respectively with circuit (A1) one the one fixation pressure circuit (A2) that is connected in series; A said fixation pressure circuit (A2) be connected in parallel respectively a pressure circuit (A3) and a conducting channel (A4); The said pressure circuit (A3) and conducting channel (A4) other end equalizer circuit (A5) that is connected in parallel, said equalizer circuit (A5) other end connects nonlinear resistive network (A6); Said nonlinear resistive network (A6) other end connects another fixation pressure circuit (A7); Said another fixation pressure circuit (A7) other end connects resistance capaciting absorpting circuit (A8); Said resistance capaciting absorpting circuit (A8) other end capacity storage circuit (A9) that is connected in series; Said capacity storage circuit (A9) other end earthed circuit (A10) that is connected in series, said earthed circuit (A10) other end and the earth (N) connect to form capacity and discharge circuit.
2. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said high-voltage connection circuit crust is the above insulation sheath of the withstand voltage 50KV of insulating properties, inner core is a copper wire, or stainless steel transition terminal block.
3. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 2, it is characterized in that said high-voltage connection circuit crust is an electrically insulating silicone rubber.
4. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said pressure circuit and conducting channel are one and compress stage clip and conductive copper sheet connects to form.
5. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said nonlinear resistive network is connected in series by at least ten zinc oxide resistance sheets to form.
6. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said resistance capaciting absorpting circuit is connected in parallel by two capacitors and resistor at least to form.
7. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said capacity storage circuit is connected to form by 20 capacitors in series at least.
8. according to the said a kind of novel capacitance-resistance overvoltage protection device of claim 1, it is characterized in that said earthed circuit connects to form with copper cash and screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220111095 CN202602270U (en) | 2012-03-22 | 2012-03-22 | Novel resistance-capacitance overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220111095 CN202602270U (en) | 2012-03-22 | 2012-03-22 | Novel resistance-capacitance overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602270U true CN202602270U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220111095 Expired - Lifetime CN202602270U (en) | 2012-03-22 | 2012-03-22 | Novel resistance-capacitance overvoltage protector |
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| Country | Link |
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| CN (1) | CN202602270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336564A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | Resistance-capacitance matching method and device for overvoltage absorption system of auxiliary winding of transformer |
-
2012
- 2012-03-22 CN CN 201220111095 patent/CN202602270U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336564A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | Resistance-capacitance matching method and device for overvoltage absorption system of auxiliary winding of transformer |
| CN114336564B (en) * | 2022-01-04 | 2023-09-05 | 中车株洲电力机车有限公司 | Resistance-capacitance matching method and device for transformer auxiliary winding overvoltage absorption system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |