技术领域technical field
本发明涉及架空输电线路运行管理、防灾减灾领域，具体涉及一种架空输电线路覆冰预警方法。The invention relates to the fields of operation management and disaster prevention and mitigation of overhead transmission lines, in particular to an early warning method for icing of overhead transmission lines.
背景技术Background technique
近年来，输电线路覆冰引发的大面积闪络、金具损坏、线路舞动、倒杆、倒塔、断线甚至大范围停电等事故对电网的安全运行造成了严重的威胁。我国是输电线路覆冰情况严重的国家之一，2008年初我国南方大范围冰雪灾害中，全国直接经济损失超过了1000亿元，因而有效地进行冰灾防治是保证我国电网稳定运行发展的首要问题。In recent years, accidents such as large-area flashovers, hardware damage, line galloping, downed poles, downed towers, broken lines and even large-scale power outages caused by icing on transmission lines have posed a serious threat to the safe operation of the power grid. my country is one of the countries with severe icing on transmission lines. In the large-scale ice and snow disasters in southern my country in early 2008, the national direct economic loss exceeded 100 billion yuan. Therefore, effective ice disaster prevention and control is the primary issue to ensure the stable operation and development of my country's power grid. .
目前，电网覆冰季节期间，运维单位通常采取人工观冰的方式进行观测和预警，但是易覆冰线路区段普遍都在山区，地形复杂、气候恶劣、交通不便，到达观冰地点普遍需要2-4小时以上，偏远地区至多只能保证每天观冰一次，且覆冰大多发生在夜间，运维单位将耗费大量的人力、物力、财力进行巡线观冰。因此，人工观冰在及时性、准确性、经济性等多方面均不满足电网覆冰预警的要求，导致覆冰预警响应速度不够及时，存在时间和空间上的盲区。At present, during the icing season of the power grid, the operation and maintenance unit usually adopts the method of artificial ice observation for observation and early warning. For more than 2-4 hours, remote areas can only observe the ice once a day at most, and most of the icing occurs at night, and the operation and maintenance unit will consume a lot of manpower, material resources, and financial resources to observe the ice. Therefore, artificial ice observation does not meet the requirements of power grid icing early warning in terms of timeliness, accuracy, economy, etc., resulting in insufficient response speed of icing early warning, and there are blind spots in time and space.
发明内容Contents of the invention
本发明为了解决上述技术问题提供一种架空输电线路覆冰预警方法。In order to solve the above technical problems, the present invention provides an ice-covered early warning method for overhead power transmission lines.
本发明通过下述技术方案实现：The present invention realizes through following technical scheme:
架空输电线路覆冰预警方法，包括以下步骤：The method for early warning of icing on overhead transmission lines comprises the following steps:
1)利用寒潮预警明确覆冰区域和线路；1) Use cold wave early warning to identify ice-covered areas and routes;
2)通过输电线路在线监测装置获取现场覆冰拉力值，建立等值覆冰厚度计算模型以计算导线等值覆冰厚度；2) Obtain the on-site icing pull force value through the online monitoring device of the transmission line, and establish an equivalent icing thickness calculation model to calculate the equivalent icing thickness of the wire;
3)结合现场微气象数据和三维地理信息，分析覆冰增长趋势；3) Combining on-site micro-meteorological data and three-dimensional geographic information to analyze the growth trend of ice cover;
4)根据导线等值覆冰厚度、覆冰增长趋势和预警风险等级发布预警信息。4) Release early warning information according to the equivalent ice thickness of conductors, ice growth trend and early warning risk level.
随着在线监测技术的应用，通过覆冰监测和环境微气象监测，使得覆冰预警成为可能。因此本方案的覆冰预警方法建立在上述基础上，以完善电网抗冰应急体系建设，必须突破现有覆冰在线监测技术应用的难题，充分发挥在线监测技术的全天候工作、实时性高的优势，扭转人工观冰为主的冰情获取方式，建立感知能力强、快速响应的高效的抗冰预警体系，为冬季电网安全保驾护航。With the application of on-line monitoring technology, through ice monitoring and environmental micro-meteorological monitoring, ice warning becomes possible. Therefore, the icing early warning method of this program is based on the above-mentioned basis. In order to improve the construction of the anti-icing emergency system of the power grid, it is necessary to break through the difficulties in the application of the existing icing online monitoring technology, and give full play to the all-weather working and high real-time advantages of the online monitoring technology. , Reverse the method of obtaining ice conditions based on artificial ice observation, and establish an efficient anti-icing early warning system with strong perception ability and quick response, so as to protect the safety of the power grid in winter.
作为优选，所述预警风险等级分为气象条件风险等级和等值覆冰厚度风险等级。Preferably, the warning risk level is divided into a meteorological condition risk level and an equivalent ice thickness risk level.
进一步的，所述气象条件风险等级包括正常、注意、严重、危急；当气温大于0℃时表示正常，即输电线路及输电铁塔不存在覆冰风险；当气温小于等于0℃且大于-20℃、相对湿度小于80％时为注意，即输电线路及输电铁塔有轻微覆冰风险；当气温小于等于0℃且大于-20℃、相对湿度大于等于80％且大于90％时为严重，即输电线路及输电铁塔具有中度覆冰风险；当气温小于等于0℃且大于-20℃、相对湿度大于等于90％时为危急，即输电线路及输电铁塔具有严重覆冰风险。Further, the risk levels of meteorological conditions include normal, attention, serious, and critical; when the temperature is greater than 0°C, it means normal, that is, there is no risk of icing on transmission lines and transmission towers; when the temperature is less than or equal to 0°C and greater than -20°C , When the relative humidity is less than 80%, it is attention, that is, there is a slight risk of icing on transmission lines and transmission towers; when the temperature is less than or equal to 0°C and greater than -20°C, and the relative humidity is greater than or equal to 80% and greater than 90%, it is serious, that is, transmission Lines and transmission towers have a moderate risk of icing; when the temperature is less than or equal to 0°C and greater than -20°C, and the relative humidity is greater than or equal to 90%, it is critical, that is, transmission lines and transmission towers have a serious risk of icing.
所述等值覆冰厚度风险等级包括正常、注意、严重、危急；当等值覆冰厚度为0时为正常，即输电线路及输电铁塔不存在覆冰风险；当等值覆冰厚度小于设计值的30％时为注意，即输电线路及输电铁塔有轻微覆冰风险；当等值覆冰厚度大于等于设计值的30％且小于设计值的60％时为严重，即输电线路及输电铁塔具有中度覆冰风险；当等值覆冰厚度大于等于设计值的60％为危急，即输电线路及输电铁塔具有严重覆冰风险。The risk levels of the equivalent icing thickness include normal, attention, serious, and critical; when the equivalent icing thickness is 0, it is normal, that is, there is no risk of icing on transmission lines and transmission towers; when the equivalent icing thickness is less than the design When the value is 30% of the value, it is attention, that is, there is a slight risk of icing on transmission lines and transmission towers; when the equivalent ice thickness is greater than or equal to 30% of the design value and less than 60% of the design value, it is serious, that is, transmission lines and transmission towers There is a moderate risk of icing; when the equivalent ice thickness is greater than or equal to 60% of the design value, it is critical, that is, the transmission line and transmission tower have a serious risk of icing.
当导线等值覆冰厚度风险等级为严重时，发布预警信息；当导线等值覆冰厚度风险等级为危机时，发布融冰预警信息。When the risk level of equivalent icing thickness of conductors is serious, early warning information is issued; when the risk level of equivalent icing thickness of conductors is critical, early warning information of melting ice is issued.
作为优选，导线等值覆冰厚度的预警阈值为设计值的30％，当达到该预警阈值时，发布预警信息；导线等值覆冰厚度的告警阈值为设计值的60％，当达到该告警阈值时，发布融冰预警信息。此处的设计值输电线路所能承受的最大覆冰厚度的设计值，根据不同的线路其具体值不一样。As a preference, the warning threshold of the equivalent icing thickness of the conductor is 30% of the design value, and when the warning threshold is reached, an early warning message is issued; the warning threshold of the equivalent icing thickness of the conductor is 60% of the design value, and when the warning threshold is reached When the threshold is exceeded, an ice melting warning message is issued. The design value here is the design value of the maximum ice coating thickness that the transmission line can bear, and its specific value is different according to different lines.
本发明与现有技术相比，至少具有如下的优点和有益效果：Compared with the prior art, the present invention has at least the following advantages and beneficial effects:
本发明的方法通过覆冰监测和环境微气象监测方法对覆冰的在线监测，其具有全天性监测、感知能力强、快速响应且高效的优势，为冬季电网安全保驾护航。The method of the present invention monitors the icing on-line through the icing monitoring and environmental micro-meteorological monitoring methods, which has the advantages of all-day monitoring, strong sensing ability, fast response and high efficiency, and escorts the safety of the power grid in winter.
附图说明Description of drawings
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，并不构成对本发明实施例的限定。在附图中：The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not limit the embodiments of the present invention. In the attached picture:
图1为本发明的原理图。Fig. 1 is a schematic diagram of the present invention.
具体实施方式detailed description
为使本发明的目的、技术方案和优点更加清楚明白，下面结合实施例和附图，对本发明作进一步的详细说明，本发明的示意性实施方式及其说明仅用于解释本发明，并不作为对本发明的限定。In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.
实施例Example
本方法适用于110KV及以上电压等级交直流架空输电线路，如图1所示架空输电线路覆冰预警方法，包括以下步骤：This method is applicable to AC/DC overhead transmission lines with a voltage level of 110KV and above. As shown in Figure 1, the ice-covered early warning method for overhead transmission lines includes the following steps:
1)利用寒潮预警明确覆冰区域和线路；1) Use cold wave early warning to identify ice-covered areas and routes;
2)通过输电线路在线监测装置获取现场覆冰拉力值，建立等值覆冰厚度计算模型以计算导线等值覆冰厚度；2) Obtain the on-site icing pull force value through the online monitoring device of the transmission line, and establish an equivalent icing thickness calculation model to calculate the equivalent icing thickness of the wire;
3)结合现场微气象数据和三维地理信息，分析覆冰增长趋势；3) Combining on-site micro-meteorological data and three-dimensional geographic information to analyze the growth trend of ice cover;
4)根据导线等值覆冰厚度、覆冰增长趋势和预警风险等级发布预警信息。4) Release early warning information according to the equivalent ice thickness of conductors, ice growth trend and early warning risk level.
为了进一步确认覆冰情况，可通过现场人员复核覆冰情况。In order to further confirm the icing situation, the icing situation can be checked by on-site personnel.
在步骤1)中，可具体根据官方发布的天气预报和寒潮预警信息，评估温降区域所影响到的输电走廊和线路区段。In step 1), the transmission corridors and line sections affected by the temperature drop area can be evaluated based on the official weather forecast and cold wave warning information.
具体的，所述预警风险等级分为气象条件风险等级和等值覆冰厚度风险等级。Specifically, the warning risk level is divided into a meteorological condition risk level and an equivalent ice thickness risk level.
气象条件风险等级包括正常、注意、严重、危急；为正常时，表示输电线路不受冰雪灾害影响，输电线路及输电铁塔不存在覆冰风险；为注意时，表示输电通道受到轻微冰雪灾害影响，输电线路及输电铁塔有轻微覆冰风险；为严重时，表示输电线路受到中度冰雪灾害影响，输电线路及输电铁塔具有中度覆冰风险；为危急时，表示输电通道受到重度冰雪灾害影响，输电线路及输电铁塔具有严重覆冰风险。其气象条件风险具体的等级划分详见表1。The risk level of meteorological conditions includes normal, attention, serious, and critical; when it is normal, it means that the transmission line is not affected by ice and snow disasters, and there is no risk of ice covering on transmission lines and transmission towers; when it is attention, it means that the transmission channel is affected by minor ice and snow disasters, The transmission line and the transmission tower have a slight risk of icing; when it is serious, it means that the transmission line is affected by moderate ice and snow disasters, and the transmission line and transmission tower have a moderate risk of icing; when it is critical, it means that the transmission channel is affected by severe ice and snow disasters, Transmission lines and transmission towers are at serious risk of icing. See Table 1 for the specific classification of meteorological condition risks.
表1气象条件风险等级划分Table 1 Risk classification of meteorological conditions
等值覆冰厚度风险等级包括正常、注意、严重、危急；为正常时，表示输电线路不受冰雪灾害影响，输电线路及输电铁塔不存在覆冰风险；为注意时，表示输电通道受到轻微冰雪灾害影响，输电线路及输电铁塔有轻微覆冰风险；为严重时，表示输电线路受到中度冰雪灾害影响，输电线路及输电铁塔具有中度覆冰风险；为危急时，表示输电通道受到重度冰雪灾害影响，输电线路及输电铁塔具有严重覆冰风险。其等值覆冰厚度风险的具体等级划分详见表2。The risk level of equivalent ice thickness includes normal, attention, serious, and critical; when it is normal, it means that the transmission line is not affected by ice and snow disasters, and there is no risk of icing on transmission lines and transmission towers; when it is attention, it means that the transmission channel is slightly affected by ice and snow Affected by the disaster, there is a slight risk of ice covering on the transmission line and transmission tower; when it is serious, it means that the transmission line is affected by moderate ice and snow disasters, and the transmission line and transmission tower have a moderate risk of ice covering; when it is critical, it means that the transmission channel is severely iced and snowed Due to the impact of the disaster, transmission lines and transmission towers are at serious risk of icing. See Table 2 for the specific grade division of the equivalent ice thickness risk.
表2等值覆冰厚度风险等级划分Table 2 Risk classification of equivalent ice thickness
导线等值覆冰厚度的预警阈值为设计值的30％，当达到该预警阈值时，发布预警信息；导线等值覆冰厚度的告警阈值为设计值的60％，当达到该告警阈值时，发布融冰预警信息。The warning threshold of equivalent icing thickness of wires is 30% of the design value, and when the warning threshold is reached, the warning information is released; the warning threshold of the equivalent icing thickness of wires is 60% of the design value, and when the warning threshold is reached, Issue ice melting warning information.
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033460.XACN106781229A (en) | 2016-11-15 | 2016-11-15 | Coated by ice of overhead power transmission line method for early warning |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033460.XACN106781229A (en) | 2016-11-15 | 2016-11-15 | Coated by ice of overhead power transmission line method for early warning |
| Publication Number | Publication Date |
|---|---|
| CN106781229Atrue CN106781229A (en) | 2017-05-31 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033460.XAPendingCN106781229A (en) | 2016-11-15 | 2016-11-15 | Coated by ice of overhead power transmission line method for early warning |
| Country | Link |
|---|---|
| CN (1) | CN106781229A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108921396A (en)* | 2018-06-13 | 2018-11-30 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of powerline ice-covering early warning method based on microclimate and icing historical data |
| CN109214675A (en)* | 2018-08-28 | 2019-01-15 | 华北电力大学 | A kind of powerline ice-covering methods of risk assessment |
| CN110188500A (en)* | 2019-06-06 | 2019-08-30 | 国网湖南省电力有限公司 | Risk analysis method and system for disconnection of power transmission lines covered with ice and falling towers |
| CN110910037A (en)* | 2019-12-02 | 2020-03-24 | 贵州电网有限责任公司 | Early warning calculation method for icing of tension value of tangent tower power transmission line |
| CN111047177A (en)* | 2019-12-06 | 2020-04-21 | 国网湖南省电力有限公司 | Multi-source monitoring and early warning method and system for icing of power transmission line |
| CN111879275A (en)* | 2020-07-31 | 2020-11-03 | 国网四川省电力公司电力科学研究院 | On-line monitoring device and method for ice coating on transmission lines |
| CN115112068A (en)* | 2022-07-13 | 2022-09-27 | 国网四川省电力公司电力科学研究院 | Method and device for estimating ice thickness of transmission line based on time series iteration |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006015047U1 (en)* | 2006-09-29 | 2006-12-07 | Klotsche, Michael, Dipl.-Ing. | Ice warning system for wind power systems has sensor module and data logger, whereby data logger is connected by data lines to sensor module, to anemometer and to controller for wind power system |
| CN101672667A (en)* | 2008-09-10 | 2010-03-17 | 华东电力试验研究院有限公司 | Method for forecasting wire icing of transmission line |
| CN102054328A (en)* | 2010-12-13 | 2011-05-11 | 云南电力试验研究院(集团)有限公司 | Dynamic warning method for ice-covered power transmission lines |
| CN102938021A (en)* | 2012-11-02 | 2013-02-20 | 云南大学 | Quantitative estimation and prediction method for icing load of power transmission line |
| CN103376083A (en)* | 2012-04-23 | 2013-10-30 | 贵州电力试验研究院 | Power transmission line icing intelligent on-line monitoring system |
| CN104615811A (en)* | 2015-01-23 | 2015-05-13 | 云南电网有限责任公司 | Mapping method for electric transmission line freezing weather risk level distribution diagram |
| CN105184407A (en)* | 2015-09-11 | 2015-12-23 | 国家电网公司 | Power transmission line icing growth forecasting method based on atmospheric numerical model |
| CN105258664A (en)* | 2015-11-11 | 2016-01-20 | 国网四川省电力公司电力科学研究院 | Power transmission line equivalence icing thickness acquisition method |
| CN106033556A (en)* | 2015-03-16 | 2016-10-19 | 国家电网公司 | A micro-meteorological disaster monitoring and early warning system for power grid and its early warning method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006015047U1 (en)* | 2006-09-29 | 2006-12-07 | Klotsche, Michael, Dipl.-Ing. | Ice warning system for wind power systems has sensor module and data logger, whereby data logger is connected by data lines to sensor module, to anemometer and to controller for wind power system |
| CN101672667A (en)* | 2008-09-10 | 2010-03-17 | 华东电力试验研究院有限公司 | Method for forecasting wire icing of transmission line |
| CN102054328A (en)* | 2010-12-13 | 2011-05-11 | 云南电力试验研究院(集团)有限公司 | Dynamic warning method for ice-covered power transmission lines |
| CN103376083A (en)* | 2012-04-23 | 2013-10-30 | 贵州电力试验研究院 | Power transmission line icing intelligent on-line monitoring system |
| CN102938021A (en)* | 2012-11-02 | 2013-02-20 | 云南大学 | Quantitative estimation and prediction method for icing load of power transmission line |
| CN104615811A (en)* | 2015-01-23 | 2015-05-13 | 云南电网有限责任公司 | Mapping method for electric transmission line freezing weather risk level distribution diagram |
| CN106033556A (en)* | 2015-03-16 | 2016-10-19 | 国家电网公司 | A micro-meteorological disaster monitoring and early warning system for power grid and its early warning method |
| CN105184407A (en)* | 2015-09-11 | 2015-12-23 | 国家电网公司 | Power transmission line icing growth forecasting method based on atmospheric numerical model |
| CN105258664A (en)* | 2015-11-11 | 2016-01-20 | 国网四川省电力公司电力科学研究院 | Power transmission line equivalence icing thickness acquisition method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108921396A (en)* | 2018-06-13 | 2018-11-30 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of powerline ice-covering early warning method based on microclimate and icing historical data |
| CN109214675A (en)* | 2018-08-28 | 2019-01-15 | 华北电力大学 | A kind of powerline ice-covering methods of risk assessment |
| CN109214675B (en)* | 2018-08-28 | 2021-12-07 | 华北电力大学 | Power transmission line icing risk assessment method |
| CN110188500A (en)* | 2019-06-06 | 2019-08-30 | 国网湖南省电力有限公司 | Risk analysis method and system for disconnection of power transmission lines covered with ice and falling towers |
| CN110910037A (en)* | 2019-12-02 | 2020-03-24 | 贵州电网有限责任公司 | Early warning calculation method for icing of tension value of tangent tower power transmission line |
| CN111047177A (en)* | 2019-12-06 | 2020-04-21 | 国网湖南省电力有限公司 | Multi-source monitoring and early warning method and system for icing of power transmission line |
| CN111879275A (en)* | 2020-07-31 | 2020-11-03 | 国网四川省电力公司电力科学研究院 | On-line monitoring device and method for ice coating on transmission lines |
| CN115112068A (en)* | 2022-07-13 | 2022-09-27 | 国网四川省电力公司电力科学研究院 | Method and device for estimating ice thickness of transmission line based on time series iteration |
| Publication | Publication Date | Title |
|---|---|---|
| CN106781229A (en) | Coated by ice of overhead power transmission line method for early warning | |
| WO2016082617A1 (en) | Gis-based method and system for associating meteorological information with power device | |
| CN207335774U (en) | A kind of power transmission line comprehensive on-line monitoring and cruising inspection system | |
| CN103559649A (en) | Power grid disaster early-warning method and system | |
| CN107796434A (en) | A kind of transmission line galloping on-line monitoring and early warning system | |
| CN103678865B (en) | A kind of sleet causes the probability of malfunction online evaluation method of transmission line malfunction | |
| CN103427367B (en) | A kind of power transmission lines overhauling method | |
| CN104950351B (en) | Meteorological-based composite horizontal display method and system for multi-meteorological elements | |
| CN203520461U (en) | An early warning device for power grid disasters | |
| CN106157177A (en) | A kind of transmission line of electricity snowfall wide area monitoring and pre-alarming method based on miniradar | |
| CN104065016B (en) | Online icing-prevention and snow-coverage-prevention method for electric transmission line by utilizing separate-excitation resonance | |
| CN102800029A (en) | Risk probability evaluation method for same-tower multi-circuit power transmission line | |
| CN114936450A (en) | Digital twin evaluation method and system for dynamic capacity increase of wind power transmission line | |
| CN111047177A (en) | Multi-source monitoring and early warning method and system for icing of power transmission line | |
| CN106370147A (en) | Wind deflection based power transmission line's wind deflection early warning system and method | |
| CN106709574A (en) | Maintenance system and method for 10 kV, 35 kV and 110 kV transmission line | |
| CN202630939U (en) | Power transmission line icing real-time monitoring device | |
| CN107066689B (en) | Meteorological risk early warning method for wind deflection faults of power transmission line | |
| CN103413176A (en) | Quantitative evaluation method for necessity of transmission line icing monitoring | |
| CN104951992A (en) | GIS-based power-meteorology longitudinal association method and system | |
| Bendel et al. | A review of the effect of ice storms on the power industry | |
| CN102706304A (en) | Predicating method for icing thickness of power transmission line conductor | |
| CN206146455U (en) | Transmission line waves on -line monitoring and early warning system | |
| CN102508321A (en) | Method for forecasting ice coating of power grid | |
| CN204556027U (en) | A kind of based on Beidou communication system power line line state monitoring system |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20170531 |