CN103560498A - Method for selecting nominal voltage of lightening arrester in ultrahigh-voltage system - Google Patents
Method for selecting nominal voltage of lightening arrester in ultrahigh-voltage system Download PDFInfo
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Abstract
The invention provides a method for selecting the nominal voltage of a lightening arrester in an ultrahigh-voltage system. The method includes the steps that a predicted value of the power frequency over-voltage of the system is obtained through simulation; power frequency over-voltage grades of the system, namely, four different grades of power frequency over-voltage thresholds are determined according to the power frequency over-voltage predicted value; the nominal voltage of the lightening arrester is selected according to the power frequency over-voltage thresholds of the grades and lasting time. The nominal voltage of the lightening arrester is selected according to the predicted power frequency over-voltage value closest to the actual power frequency over-voltage of the system and the power frequency over-voltage thresholds, and therefore the problem that the nominal voltage of the lightening arrester is too high will not occur, and the problems that the lightening arrester is low in protective margin and high in system construction cost and leads to economic waste are avoided.
Description
Technical field
The present invention relates to technical field of power systems, more particularly, relate to a kind of method that ultra-high/extra-high voltage system is selected lightning arrester rated voltage.
Background technology
When electric power system normally moves, under the rated voltage effect of the insulation of electric equipment in electrical network, but due to reasons such as thunderbolt, switching manipulation, fault or parameter mismatees, in electric power system, the voltage of some part may raise, substantially exceed sometimes the numerical value under normal condition, this kind of voltage raises and is called overvoltage.Wherein, power-frequency overvoltage is exactly that a kind of frequency equals or approaches power frequency and voltage higher than the overvoltage of system maximum operating voltage.
In order to guarantee insulation safety, economy and the reliability service of electric power system, must take restriction to protect power equipment to avoid the impact of power-frequency overvoltage.Lightning arrester is exactly that a kind of protection system is avoided the device that power-frequency overvoltage impacts, and lightning arrester rated voltage is an important parameter that shows lightning arrester operation characteristic.Due to the selection of lightning arrester rated voltage, depend primarily on size and the duration of power-frequency overvoltage, therefore, power-frequency overvoltage is the principal element that affects lightning arrester operation characteristic.
At present, the ultra-high/extra-high voltage AC transmission system power-frequency overvoltage design that China is different, all adopt same control requirement, as the control requirement of the power-frequency overvoltage of ultra high voltage system is: the power-frequency overvoltage of line-breaker transformer substation side is not more than 1.3p.u.(per unit, perunit value unit); The power-frequency overvoltage in line side is not more than 1.4p.u., and the duration is not more than 0.5s, and the lightning arrester rated voltage of selecting according to above-mentioned power-frequency overvoltage (1.3p.u.) is 828KV.Generally, as long as meet the cooperation coefficient of protection insulation, the rated voltage of lightning arrester is higherly optional.
But in practical application, under the impact of the factors such as grid structure, transmission distance, circuit types, conveying trend and high resistance compensativity, the power-frequency overvoltage of different ultra-high/extra-high voltage systems there are differences.For example,, for the same extra-high voltage same tower double circuit line that is 400km for length, when circuit two ends Wei“ factory is to net " during structure, the power-frequency overvoltage of line-breaker transformer substation side is 1.19p.u., the power-frequency overvoltage in line side is 1.34p.u; When circuit two ends are " net is to net " structure, the power-frequency overvoltage of line-breaker transformer substation side is 1.05p.u., and the power-frequency overvoltage in line side is 1.22p.u..
Hence one can see that; the different system there are differences for power-frequency overvoltage; if still select lightning arrester rated voltage according to same power-frequency overvoltage threshold value (1.3p.u.); can make the lightning arrester rated voltage of selection too high; under same insulation level; not only can make the protective margin of lightning arrester lower, also can make the project cost of system higher, cause waste economically.
Summary of the invention
In view of this; the invention provides a kind of ultra-high/extra-high voltage system and select the method for lightning arrester rated voltage; to solve in prior art because the lightning arrester rated voltage of selecting is too high, and the protective margin of the lightning arrester causing is lower, system engineering cost is high and the problem of economic waste.
For achieving the above object, the invention provides following technical scheme:
Ultra-high/extra-high voltage system is selected a method for lightning arrester rated voltage, comprising:
By emulation, draw the power-frequency overvoltage predicted value of system;
According to described power-frequency overvoltage predicted value, determine the power-frequency overvoltage grade of described system, described power-frequency overvoltage grade is four grades that power-frequency overvoltage threshold value is different;
According to power-frequency overvoltage threshold value and the duration of described grade, select lightning arrester rated voltage.
Preferably, draw the power-frequency overvoltage predicted value of system by emulation before, also comprise step:
According to the conditional parameter of system, set up the electromagnetic transient simulation model of system.
Preferably, the conditional parameter of described system comprises:
Trend, line parameter circuit value and high resistance compensativity before grid structure, power supply capacity, load rejection.
Preferably, described power-frequency overvoltage grade comprises:
Line-breaker transformer substation side power-frequency overvoltage is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the first estate of 1.3p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the second grade of 1.4p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the tertiary gradient of 1.4p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the fourth estate of 1.5p.u..
Preferably, in described four grades, the duration of the power-frequency overvoltage in the line side of line-breaker is all not more than 0.5s.
Preferably, according to power-frequency overvoltage threshold value and the duration of described grade, select the process of lightning arrester rated voltage, be specially:
According to line-breaker transformer substation side power-frequency overvoltage threshold value and the duration of described grade, select substation bus bar type lightning arrester rated voltage;
According to power-frequency overvoltage threshold value and the duration in the line-breaker line side of described grade, select transformer station's Transmission Line Arrestor rated voltage.
Preferably, the principle of selecting substation bus bar type lightning arrester rated voltage is:
The rated voltage of substation bus bar type lightning arrester is not less than the power-frequency overvoltage threshold value of the line-breaker transformer substation side of described grade.
Preferably, the principle of selecting transformer station's Transmission Line Arrestor rated voltage is:
Under the effect of the line-breaker line side of described grade power-frequency overvoltage threshold value, the rated voltage that tolerance time is not less than the lightning arrester of 0.5s is the rated voltage of transformer station's Transmission Line Arrestor of selecting.
Preferably, after selecting lightning arrester rated voltage, also comprise step:
According to described lightning arrester rated voltage, select substation bus bar type and Transmission Line Arrestor.
Preferably, the power frequency withstand time of described substation bus bar type lightning arrester is not less than 20min; The power frequency withstand time of described transformer station Transmission Line Arrestor is not less than 0.5s.
Compared with prior art, technical scheme provided by the present invention has the following advantages:
Ultra-high/extra-high voltage system provided by the invention is selected the method for lightning arrester rated voltage, in advance power-frequency overvoltage has been divided into four different grades of threshold value, then by emulation, draw after the power-frequency overvoltage predicted value of system, select the immediate power-frequency overvoltage grade of threshold value and predicted value, and retain certain nargin, again according to the threshold value of described grade and duration, select the rated voltage of lightning arrester, hence one can see that, the lightning arrester rated voltage of selecting by method provided by the invention, according to selecting with the immediate power-frequency overvoltage predicted value of the actual power-frequency overvoltage of system and power-frequency overvoltage threshold value, therefore, there will not be the too high problem of lightning arrester rated voltage, thereby avoided the protective margin of lightning arrester lower, the problem of the high and economic waste of system engineering cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The ultra-high/extra-high voltage system that Fig. 1 provides for the embodiment of the present invention one is selected the flow chart of the method for lightning arrester rated voltage;
The ultra-high/extra-high voltage system that Fig. 2 provides for the embodiment of the present invention two is selected the flow chart of the method for lightning arrester rated voltage.
Embodiment
As described in background, lightning arrester rated voltage of the prior art system of selection, can cause that lightning arrester rated voltage is too high, the protective margin of lightning arrester is lower and project cost system is higher and the problem of economic waste.Inventor studies discovery, causes the reason of this problem mainly, and different ultra-high/extra-high voltage AC transmission system is all controlled and required to select lightning arrester rated voltage according to same power-frequency overvoltage, has ignored the difference of the power-frequency overvoltage of different system.
Based on this, the invention provides a kind of ultra-high/extra-high voltage system and select the method for lightning arrester rated voltage, in advance power-frequency overvoltage has been divided into four different grades of threshold value, then by emulation, draw after the power-frequency overvoltage predicted value of system, select the immediate power-frequency overvoltage grade of threshold value and predicted value, and retain certain nargin, again according to the threshold value of described grade and duration, select the rated voltage of lightning arrester, hence one can see that, the lightning arrester rated voltage of selecting by method provided by the invention, according to selecting with the immediate power-frequency overvoltage predicted value of the actual power-frequency overvoltage of system and power-frequency overvoltage threshold value, therefore, there will not be the too high problem of lightning arrester rated voltage, thereby avoided the protective margin of lightning arrester lower, the problem of the high and economic waste of system engineering cost.
Be more than core concept of the present invention, for above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention be described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, so the present invention is not subject to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, when the embodiment of the present invention is described in detail in detail; for ease of explanation; the profile that represents device architecture can be disobeyed general ratio and be done local amplification, and described schematic diagram is example, and it should not limit the scope of protection of the invention at this.The three-dimensional space that should comprise in addition, length, width and the degree of depth in actual fabrication.
Below by several embodiment, describe in detail.
Embodiment mono-
The present embodiment provides a kind of ultra-high/extra-high voltage system to select the method for lightning arrester rated voltage, and flow chart as shown in Figure 1, comprising:
S101: the power-frequency overvoltage predicted value that draws system by emulation;
Because ultra-high/extra-high voltage AC transmission system is mainly considered the load rejection of circuit fault-free and the power-frequency overvoltage when circuit has this two classes fault of load rejection under ground fault condition, therefore, the power-frequency overvoltage that the present embodiment causes the load rejection of circuit fault-free and single-phase earthing load rejection by emulation is predicted, draws the power-frequency overvoltage predicted value of system.When emulation, need to consider that grid structure changes, power supply capacity changes, circuit is carried the impacts of factor on power-frequency overvoltage such as trend size, line length deviation and high resistance compensativity deviation before load rejection, obtain under partially serious operating mode and the immediate power-frequency overvoltage predicted value of reality.
S1023: according to described power-frequency overvoltage predicted value, determine the power-frequency overvoltage grade of described system, described power-frequency overvoltage grade is four grades that power-frequency overvoltage threshold value is different;
In the present embodiment, according to the different power-frequency overvoltages of system condition, can there are differences, power-frequency overvoltage has been divided into four different grades of threshold value, particularly, these four power-frequency overvoltage grades are: line-breaker transformer substation side power-frequency overvoltage is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the first estate of 1.3p.u.; The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the second grade of 1.4p.u.; The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the tertiary gradient of 1.4p.u..The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the fourth estate of 1.5p.u..Wherein, the duration of the power-frequency overvoltage in the line side of the line-breaker of these four grades is all not more than 0.5s.
On this basis, the power-frequency overvoltage predicted value that emulation is drawn, compares with the power-frequency overvoltage threshold value of these four grades, retains certain nargin, selects threshold value and the immediate grade of predicted value, can determine the power-frequency overvoltage grade of system.
S103: according to power-frequency overvoltage threshold value and the duration of described grade, select lightning arrester rated voltage.
Determine after the power-frequency overvoltage grade of system, can obtain line-breaker transformer substation side corresponding to this grade and line side power-frequency overvoltage threshold value and duration, and according to line-breaker transformer substation side power-frequency overvoltage threshold value and the duration of described grade, select substation bus bar type lightning arrester rated voltage; According to power-frequency overvoltage threshold value and the duration in the line-breaker line side of described grade, select transformer station's Transmission Line Arrestor rated voltage.Wherein, the principle of selecting substation bus bar type lightning arrester rated voltage is: substation bus bar type lightning arrester rated voltage is not less than the power-frequency overvoltage threshold value of described line-breaker transformer substation side, and the power frequency withstand time is not less than 20min; The principle of selecting transformer station's Transmission Line Arrestor rated voltage is: under the effect of the line-breaker line side of described grade power-frequency overvoltage threshold value, the rated voltage that tolerance time is not less than the lightning arrester of 0.5s is the rated voltage of transformer station's Transmission Line Arrestor of selecting.
The ultra-high/extra-high voltage system that the present embodiment provides is selected the method for lightning arrester rated voltage, in advance power-frequency overvoltage has been divided into four different grades of threshold value, then by emulation, draw after the power-frequency overvoltage predicted value of system, select the immediate power-frequency overvoltage grade of threshold value and predicted value, and retain certain nargin, again according to the threshold value of described grade and duration, select the rated voltage of lightning arrester, hence one can see that, the lightning arrester rated voltage that the method providing by the present embodiment is selected, according to selecting with the immediate power-frequency overvoltage predicted value of the actual power-frequency overvoltage of system and power-frequency overvoltage threshold value, therefore, there will not be the too high problem of lightning arrester rated voltage, thereby avoided the protective margin of lightning arrester lower, the problem of the high and economic waste of system engineering cost.
Embodiment bis-
The present embodiment provides a kind of ultra-high/extra-high voltage system to select the method for lightning arrester rated voltage, and flow chart as shown in Figure 2.
S201: according to the conditional parameter of system, set up the electromagnetic transient simulation model of system;
Because ultra-high/extra-high voltage AC transmission system is mainly considered the load rejection of circuit fault-free and the power-frequency overvoltage when circuit has this two classes fault of load rejection under ground fault condition, therefore, the present embodiment, according to conditional parameters such as trend, line parameter circuit value and high resistance compensativities before the grid structure of ultra-high/extra-high voltage system, power supply capacity, load rejection, is set up electromagnetic transient simulation model.
S202: the power-frequency overvoltage predicted value that draws system by emulation;
By electromagnetic transient simulation model, the power-frequency overvoltage that the load rejection of circuit fault-free and single-phase earthing load rejection are caused carries out emulation, draws the power-frequency overvoltage predicted value of system.Because electromagnetic transient simulation model is that the conditional parameters such as trend before power supply capacity according to system, load rejection, line parameter circuit value and high resistance compensativity are set up, therefore, the power-frequency overvoltage predicted value drawing by emulation, be under partially serious operating mode with the immediate power-frequency overvoltage predicted value of reality.
S203: according to described power-frequency overvoltage predicted value, determine the power-frequency overvoltage grade of described system, described power-frequency overvoltage grade is four grades that power-frequency overvoltage threshold value is different;
In the present embodiment, based on the different power-frequency overvoltages of system condition, can there are differences, power-frequency overvoltage has been divided into four different grades of threshold value, particularly, these four power-frequency overvoltage grades are: line-breaker transformer substation side power-frequency overvoltage is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the first estate of 1.3p.u.; The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the second grade of 1.4p.u.; The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the tertiary gradient of 1.4p.u..The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the fourth estate of 1.5p.u..Wherein, the duration of the power-frequency overvoltage in the line side of the line-breaker of these four grades is all not more than 0.5s.
On this basis, the power-frequency overvoltage predicted value that emulation is drawn, compares with the power-frequency overvoltage threshold value of these four grades, retains certain nargin, select threshold value and the immediate grade of predicted value, can determine that this grade is exactly the power-frequency overvoltage grade of system.
S204: according to power-frequency overvoltage threshold value and the duration of described grade, select lightning arrester rated voltage.
Determine after the power-frequency overvoltage grade of system, can obtain line-breaker transformer substation side corresponding to this grade and line side power-frequency overvoltage threshold value and duration, and according to line-breaker transformer substation side power-frequency overvoltage threshold value and the duration of described grade, select substation bus bar type lightning arrester rated voltage; According to power-frequency overvoltage threshold value and the duration in the line-breaker line side of described grade, select transformer station's Transmission Line Arrestor rated voltage.Wherein, the principle of selecting substation bus bar type lightning arrester rated voltage is: substation bus bar type lightning arrester rated voltage is not less than the power-frequency overvoltage threshold value of described line-breaker transformer substation side, and the power frequency withstand time is not less than 20min; The principle of selecting transformer station's Transmission Line Arrestor rated voltage is: under the effect of the line-breaker line side of described grade power-frequency overvoltage threshold value, the rated voltage that tolerance time is not less than the lightning arrester of 0.5s is the rated voltage of transformer station's Transmission Line Arrestor of selecting.
Take ultra high voltage system as example, and when the power-frequency overvoltage grade of system is the first estate, line-breaker transformer substation side power-frequency overvoltage threshold value is 1.2p.u.(1p.u.=635KV), now, the lightning arrester rated voltage of selecting can be 762KV.
Certainly, in other embodiments, select after lightning arrester rated voltage, can also comprise step: according to described lightning arrester rated voltage, select the lightning arrester in line-breaker transformer substation side and line side.Wherein, the power frequency withstand time of the transformer substation side lightning arrester of line-breaker is not less than 20min, and the power frequency withstand time of the line side lightning arrester of line-breaker is not less than 0.5s.
The ultra-high/extra-high voltage system that the present embodiment provides is selected the method for lightning arrester rated voltage, in advance power-frequency overvoltage has been divided into four different grades of threshold value, according to the conditional parameter of system, set up electromagnetic transient simulation model, by emulation, draw the power-frequency overvoltage predicted value of system, then according to power-frequency overvoltage predicted value, select and the immediate power-frequency overvoltage grade of threshold value, and retain certain nargin, again according to power-frequency overvoltage threshold value and the duration of described grade, select the rated voltage of lightning arrester, hence one can see that, the lightning arrester rated voltage that the method providing by the present embodiment is selected, according to selecting with the immediate power-frequency overvoltage predicted value of the actual power-frequency overvoltage of system and power-frequency overvoltage threshold value, therefore, there will not be the too high problem of lightning arrester rated voltage, thereby avoided the protective margin of lightning arrester lower, the problem of the high and economic waste of system engineering cost.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. ultra-high/extra-high voltage system is selected a method for lightning arrester rated voltage, it is characterized in that, comprising:
By emulation, draw the power-frequency overvoltage predicted value of system;
According to described power-frequency overvoltage predicted value, determine the power-frequency overvoltage grade of described system, described power-frequency overvoltage grade is four grades that power-frequency overvoltage threshold value is different;
According to power-frequency overvoltage threshold value and the duration of described grade, select lightning arrester rated voltage.
2. method according to claim 1, is characterized in that, before drawing the power-frequency overvoltage predicted value of system, also comprises step by emulation:
According to the conditional parameter of system, set up the electromagnetic transient simulation model of system.
3. method according to claim 2, is characterized in that, the conditional parameter of described system comprises:
Trend, line parameter circuit value and high resistance compensativity before grid structure, power supply capacity, load rejection.
4. according to the method described in claim 1 or 3, it is characterized in that, described power-frequency overvoltage grade comprises:
Line-breaker transformer substation side power-frequency overvoltage is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the first estate of 1.3p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.2p.u., and the line side power-frequency overvoltage of line-breaker is not more than the second grade of 1.4p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the tertiary gradient of 1.4p.u.;
The transformer substation side power-frequency overvoltage of line-breaker is not more than 1.3p.u., and the line side power-frequency overvoltage of line-breaker is not more than the fourth estate of 1.5p.u..
5. method according to claim 4, is characterized in that, in described four grades, the duration of the power-frequency overvoltage in the line side of line-breaker is all not more than 0.5s.
6. method according to claim 5, is characterized in that, according to power-frequency overvoltage threshold value and the duration of described grade, selects the process of lightning arrester rated voltage, is specially:
According to line-breaker transformer substation side power-frequency overvoltage threshold value and the duration of described grade, select substation bus bar type lightning arrester rated voltage;
According to power-frequency overvoltage threshold value and the duration in the line-breaker line side of described grade, select transformer station's Transmission Line Arrestor rated voltage.
7. method according to claim 6, is characterized in that, the principle of selecting substation bus bar type lightning arrester rated voltage is:
Substation bus bar type lightning arrester rated voltage is not less than the power-frequency overvoltage threshold value of the line-breaker transformer substation side of described grade.
8. method according to claim 7, is characterized in that, the principle of selecting transformer station's Transmission Line Arrestor rated voltage is:
Under the effect of the line-breaker line side of described grade power-frequency overvoltage threshold value, the rated voltage that tolerance time is not less than the lightning arrester of 0.5s is the rated voltage of transformer station's Transmission Line Arrestor of selecting.
9. method according to claim 8, is characterized in that, after selecting lightning arrester rated voltage, also comprises step:
According to described lightning arrester rated voltage, select substation bus bar type and Transmission Line Arrestor.
10. method according to claim 9, is characterized in that, the power frequency withstand time of described substation bus bar type lightning arrester is not less than 20min; The power frequency withstand time of described transformer station Transmission Line Arrestor is not less than 0.5s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887831A (en) * | 2015-12-15 | 2017-06-23 | 中国电力科学研究院 | Ultra-high voltage AC transmission system switching overvoltage flexibility method for limiting |
| CN112803586A (en) * | 2020-12-27 | 2021-05-14 | 常熟开关制造有限公司(原常熟开关厂） | Automatic setting method and device for rated parameters of circuit breaker and circuit breaker |
| CN113884748A (en) * | 2021-09-24 | 2022-01-04 | 广东电网有限责任公司 | Alternating current transmission line overvoltage measuring method and device based on controllable phase shifter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5583734A (en) * | 1994-11-10 | 1996-12-10 | Raychem Corporation | Surge arrester with overvoltage sensitive grounding switch |
| CN101093742A (en) * | 2007-04-25 | 2007-12-26 | 中国电力科学研究院 | Contrable metal oxide arrester in use for transmission system in supervoltage, extra high voltage |
-
2013
- 2013-11-21 CN CN201310594701.8A patent/CN103560498B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5583734A (en) * | 1994-11-10 | 1996-12-10 | Raychem Corporation | Surge arrester with overvoltage sensitive grounding switch |
| CN101093742A (en) * | 2007-04-25 | 2007-12-26 | 中国电力科学研究院 | Contrable metal oxide arrester in use for transmission system in supervoltage, extra high voltage |
Non-Patent Citations (4)
| Title |
|---|
| 樊力: "交流系统金属氧化物避雷器的选择", 《电力设备》 * |
| 樊力: "交流系统金属氧化物避雷器的选择", 《电力设备》, vol. 6, no. 8, 31 August 2005 (2005-08-31), pages 4 - 8 * |
| 王保山等: "特高压交流避雷器TOV极限耐受能力试验研究", 《高电压技术》 * |
| 谷定燮等: "降低1000kV变电站避雷器额定电压的可行性", 《高电压技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887831A (en) * | 2015-12-15 | 2017-06-23 | 中国电力科学研究院 | Ultra-high voltage AC transmission system switching overvoltage flexibility method for limiting |
| CN112803586A (en) * | 2020-12-27 | 2021-05-14 | 常熟开关制造有限公司(原常熟开关厂） | Automatic setting method and device for rated parameters of circuit breaker and circuit breaker |
| CN113884748A (en) * | 2021-09-24 | 2022-01-04 | 广东电网有限责任公司 | Alternating current transmission line overvoltage measuring method and device based on controllable phase shifter |
| CN113884748B (en) * | 2021-09-24 | 2023-07-25 | 广东电网有限责任公司 | Alternating current transmission line overvoltage measuring method and device based on controllable phase shifter |
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