CN104281982A - Substation equipment state evaluation method based on power grid topological structure - Google Patents
Substation equipment state evaluation method based on power grid topological structure Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 claims description 7
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Abstract
The invention relates to a substation equipment state evaluation method based on a power grid topological structure. The substation equipment state evaluation method is characterized by including the following steps: (1) a substation equipment model is built, wherein the substation equipment model comprises attribute information and power grid topological structure information of equipment; (2) associated equipment having the electric relation with analyzed equipment is searched in cooperation with the power grid topological structure information; (3) state evaluation is carried out on the analyzed equipment according to equipment state influence factors, and influences of the analyzed equipment on the associated equipment are calculated. By means of the substation equipment state evaluation method, when traditional monitoring indicators of equipment states are considered, the position of the equipment in the power grid topological structure is comprehensively considered, the equipment state analysis is not isolated any more, and the equipment states are more comprehensively analyzed.
Description
Technical field
The present invention relates to a kind of method of primary equipment in transformer station being carried out to state estimation.
Background technology
In transformer station, the maintenance mode of key equipment develops into repair based on condition of component from trouble hunting, prophylactic repair, greatly reduces the cost of overhaul, ensure that the reliability of system.The state estimation of key equipment has various ways, and major part is all the running status by monitoring equipment, obtains equipment operational factor, then carries out calculating equipment state.
At present, in intelligent substation station equipment state evaluating method, only isolated ground analytical equipment ruuning situation, do not go analytical equipment state from transformer station's overall operation situation, it is only the individual instances of analytical equipment, not having influencing each other of analytical equipment, obviously there is the problem of one-sidedness in this method.
The equipment run in electrical network, each equipment is a node in electrical network, is not isolated existence, therefore, only has and go analytical equipment state in conjunction with topological structure of electric information, the state of ability comprehensive assessment equipment.
Summary of the invention
Technology to be solved by this invention is asked questions, just be to provide a kind of transformer substation equipment state assessment method based on topological structure of electric, it can on the basis of the online monitoring data of equipment, the topological structure of electric information in comprehensive transformer station residing for this equipment, the state of comprehensive assessment equipment.
Solve the problems of the technologies described above, the present invention adopts technical scheme to realize:
Based on a transformer substation equipment state assessment method for topological structure of electric, it is characterized in that, described state evaluating method comprises the following steps:
(1) substation equipment model is set up: device model comprises attribute information and the topological structure of electric information of equipment;
(2) there is in conjunction with topological structure of electric information searching and analyzed equipment the associate device of electrical link;
(3) according to equipment state influence factor state estimation carried out on analyzed equipment and calculate the impact of analyzed equipment on its associate device.
Described in above-mentioned steps (1), the attribute information of equipment comprises the title of equipment, the physical parameter of equipment, the environmental information residing for equipment, the maintenance schedule etc. of equipment.
The physical parameter of described equipment is obtained by the equipment condition monitoring device in transformer station; Environmental information residing for described equipment obtains from the environmental information production system; The maintenance schedule of described equipment obtains from the production schedule production system; The topology information of described electrical network obtains from Substation Bus Arrangement figure.
According to equipment state influence factor, state estimation is carried out to analyzed equipment in step (3) and comprise opening and closing state according to the switchgear in topological structure of electric information and substation equipment, add up the step of the on-line operation time of analyzed equipment.Because topological structure of electric introduced by substation equipment model of the present invention, the on-line operation time that equipment is real can be added up accurately, but not in prior art, the rough on-line operation time using the making time of equipment as equipment, relative to prior art, the present invention can the insulation ag(e)ing situation of assessment apparatus more accurately.
Carrying out state estimation according to equipment state influence factor to analyzed equipment in described step (3) comprises according to substation equipment modeling statistics analyzed equipment overload number of times and the step of overload cumulative time, owing in equipment state appraisal procedure being before only isolated ground analytical equipment ruuning situation, so the overload cumulative time of equipment cannot be known, and topological structure of electric introduced by substation equipment model of the present invention, can know that the overload of equipment adds up situation according to associate device.
Described step (3) also comprises the steps: to carry out state estimation according to equipment state influence factor to analyzed equipment, the health status of computing equipment, when equipment is in abnormality, calculates the impact of analyzed equipment on its associate device, and state estimation is carried out to these associate devices;
The step of the health status of computing equipment is: list the influence factor of equipment state and give respective weights respectively, the score of computing equipment and the number percent of full marks: 85% ~ 100% health status, 70% ~ 85% sub-health state, 45% ~ 70% malfunction, 0% ~ 45% severe fault condition, being less than 0% unknown state.
Relative to prior art, the present invention has following beneficial effect: equipment state appraisal procedure provided by the present invention, when considering the traditional monitoring index of equipment state, consider the position of equipment in topological structure of electric, make equipment state analysis no longer isolated, analyze the state of equipment more all sidedly.
Embodiment
Below in conjunction with the specific embodiment of the present invention, introduce the lower transformer substation equipment state assessment method based on topological structure of electric of the present invention in detail.
Equipment state appraisal procedure based on topological structure of electric in transformer station of the present invention specifically comprises the steps:
Step 1: set up substation equipment model
Device model comprises attribute information and the topological structure of electric information of equipment, the attribute information of described equipment comprises the title of equipment, the physical parameter of equipment as voltage, electric current, temperature, pressure etc., the environmental information residing for equipment as mountain fire, thunder and lightning, haze etc., the maintenance schedule etc. of equipment.
The method of the maintenance schedule assessment apparatus state of the physical parameter of bonding apparatus, the environmental information residing for equipment, equipment is prior art.Primary object of the present invention is that equipment state appraisal procedure of the present invention combines topological structure of electric, and the annexation of topological structure of electric information response between equipment and equipment, connects in which way.
Substation equipment model describes with xml formatted file.
Above-mentioned steps 1 comprises the steps:
The physical parameter of acquisition equipment, the physical parameter of equipment is obtained by the equipment condition monitoring device in transformer station, and described equipment condition monitoring device refers to the device such as observing and controlling, protection, can the running state parameter of collecting device;
The environmental information of acquisition equipment and O&M plan, obtain environmental information and the O&M plan information of equipment in production system;
Obtain topological structure of electric information, obtain topological structure of electric information by the main wiring diagram of transformer station, main wiring diagram here mainly refers to the primary equipment wiring diagram of transformer station.Topological structure of electric information describes the interconnecting relation of equipment room, and such as, the high-pressure side of main transformer with which isolating switch is connected, and bus with which isolating switch is connected.
Step 2: the associate device in conjunction with topological structure of electric information searching and analyzed equipment with electrical link
As in topological structure of electric information, bus 1 is connected with main transformer 1# by primary cut-out A, when carrying out equipment state assessment, need the opening and closing state considering primary cut-out A, if primary cut-out A is in gate-dividing state, then bus 1 and main transformer 1# are without electrical link, namely between main transformer 1# and bus 1, nothing influences each other, if primary cut-out is in "on" position, then the state of main transformer 1# may have impact to bus 1, and in like manner the state of bus 1 also can have impact to the operation of main transformer 1#.
Step 3: according to equipment state influence factor state estimation carried out on analyzed equipment and calculate the impact of analyzed equipment on its associate device
Equipment state influence factor and device category closely related, if the state influence factor of various equipment carries out existing in state estimation prior art introduction with according to equipment state influence factor to equipment, but the topological structure of electric information due to substation equipment models coupling of the present invention, so, equipment state influence factor more accurately can be obtained in the present invention:
As the overload number of times, overload cumulative time, on-line operation time etc. of equipment.In prior art, the rough on-line operation time using the making time of equipment as equipment, and the present invention can according to the opening and closing state of the switchgear in topological structure of electric information and substation equipment, count the charged on-line operation time that analyzed equipment is real accurately, thus the insulation ag(e)ing situation of assessment apparatus more accurately.
Above-mentioned steps 3 can also comprise the steps: to carry out state estimation according to equipment state influence factor to analyzed equipment, the health status of computing equipment, when equipment is in abnormality, calculates the impact of analyzed equipment on its associate device, and state estimation is carried out to these associate devices;
The step of the health status of computing equipment is: list the influence factor of equipment state and give respective weights respectively, the score of computing equipment and the number percent of full marks: 85% ~ 100% health status, 70% ~ 85% sub-health state, 45% ~ 70% malfunction, 0% ~ 45% severe fault condition, being less than 0% unknown state.
Example below for adopting the inventive method to carry out equipment state assessment:
power transformer:
For the state estimation of power transformer in transformer station, consider the physical parameter of power transformer as phase voltage, line voltage, phase current, oil temperature etc., power transformer environmental information, the maintenance schedule of power transformer, and the topological structure of electric information to be associated with power transformer can judge the working time, penetration power situation etc. of power transformer by this information, then according to the health status of different weight calculation power transformers.
The equipment be connected with power transformer, high voltage side of transformer has disconnector and isolating switch, and low-pressure side has isolating switch.
If the on high-tension side isolating switch of power transformer is gate-dividing state, then power transformer is without electricity, when power transformer is without electricity, then need not assess the state of power transformer, discussion of the present invention be the equipment needing to carry out state estimation.
When carrying out state estimation to power transformer, if the state of power transformer is slight overload state, so on high-tension side disconnector and isolating switch then have larger current to be passed through.Can know from the equipment characteristic of power transformer, power transformer has very strong capability of overload, such as, when overload 1.3 times, is arranged on outdoor power transformer and can runs 120 minutes.For the on high-tension side disconnector of power transformer and isolating switch, then need to consider that big current long-play state is on the impact of equipment, the overload electric current born is larger, and the loss of equipment is larger, through repeatedly accumulating for a long time, the insulation division branch of equipment is aging.
Disconnector is connected with power transformer high-pressure side with isolating switch; if the electric current that disconnector or isolating switch flow through is larger; exceed certain limit; then may cause the overladen generation of power transformer; can according to the length of overload time; judge the impact of overload on power transformer, and judged by the overload protection device of power transformer, be then not easy to calculate overladen accumulation situation.
isolating switch:
For the state estimation of transformer station's inner breaker, consider the physical parameter of isolating switch as the maintenance schedule of branch wire time, fracture situation etc., isolating switch, residing environmental information, and the topological structure of electric information to be associated with isolating switch, according to the health status of different weight calculation isolating switchs.
The divide-shut brake number of times of statistics isolating switch, for adding up the action frequency of the spring device of isolating switch, because spring device action, can wear and tear, statistics number, and be mainly used in the residual life predicting spring device, spring device damages, and isolating switch has also just damaged; Calculate the T.T. that breaker closing runs, thus the insulation ag(e)ing situation of assessment isolating switch; Judge the running status of the equipment that isolating switch is connected with isolating switch when being in "on" position and calculate the working time of described equipment as transformer, bus, disconnector, grounding switch etc., thus add up the charging operation time of each equipment, assess each apparatus insulated aging situation; Consider the parameter of deciliter state of isolating switch as the maintenance schedule of deciliter time, fracture situation etc., isolating switch, calculate the health status of isolating switch.
Claims (6)
1. based on a transformer substation equipment state assessment method for topological structure of electric, it is characterized in that, described state evaluating method comprises the following steps:
(1) substation equipment model is set up: device model comprises attribute information and the topological structure of electric information of equipment;
(2) there is in conjunction with topological structure of electric information searching and analyzed equipment the associate device of electrical link;
(3) according to equipment state influence factor state estimation carried out on analyzed equipment and calculate the impact of analyzed equipment on its associate device.
2. the transformer substation equipment state assessment method based on topological structure of electric according to claim 1, it is characterized in that, described in above-mentioned steps (1), the attribute information of equipment comprises the title of equipment, the physical parameter of equipment, environmental information residing for equipment, the maintenance schedule of equipment.
3. the transformer substation equipment state assessment method based on topological structure of electric according to claim 2, is characterized in that, the physical parameter of described equipment is obtained by the equipment condition monitoring device in transformer station; Environmental information residing for described equipment obtains from the environmental information production system; The maintenance schedule of described equipment obtains from the production schedule production system; The topology information of described electrical network obtains from Substation Bus Arrangement figure.
4. the transformer substation equipment state assessment method based on topological structure of electric according to any one of claim 1 ~ 3 claim, it is characterized in that, according to equipment state influence factor, state estimation is carried out to analyzed equipment in above-mentioned steps (3) and comprise opening and closing state according to the switchgear in topological structure of electric information and substation equipment, add up the step of the on-line operation time of analyzed equipment.
5. the transformer substation equipment state assessment method based on topological structure of electric according to any one of claim 4 claim, it is characterized in that, according to equipment state influence factor, state estimation is carried out to analyzed equipment in above-mentioned steps (3) and comprise according to substation equipment modeling statistics analyzed equipment overload number of times and the step of overload cumulative time.
6. the transformer substation equipment state assessment method based on topological structure of electric according to claim 1, it is characterized in that, above-mentioned steps (3) also comprises the steps: to carry out state estimation according to equipment state influence factor to analyzed equipment, the health status of computing equipment, when equipment is in abnormality, calculate the impact of analyzed equipment on its associate device, and state estimation is carried out to these associate devices;
The step of the health status of computing equipment is: list the influence factor of equipment state and give respective weights respectively, the score of computing equipment and the number percent of full marks: 85% ~ 100% health status, 70% ~ 85% sub-health state, 45% ~ 70% malfunction, 0% ~ 45% severe fault condition, being less than 0% unknown state.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105260495A (en) * | 2015-07-31 | 2016-01-20 | 国家电网公司 | Decoupling simulation analysis method for identifying power angle instability reason of large-disturbance power grid |
| CN105335903A (en) * | 2015-11-30 | 2016-02-17 | 广东电网有限责任公司电力调度控制中心 | Intelligent substation modeling method |
| CN105445585A (en) * | 2015-11-27 | 2016-03-30 | 广州供电局有限公司 | Fault diagnosis method and system for primary loop of power grid |
| CN106022608A (en) * | 2016-05-19 | 2016-10-12 | 国电南瑞科技股份有限公司 | Remote operation safety control method considering state of power grid equipment |
| CN106532961A (en) * | 2016-12-26 | 2017-03-22 | 北京四方继保自动化股份有限公司 | Intelligent substation anti-misoperation locking method based on information fusion |
| CN108256234A (en) * | 2018-01-19 | 2018-07-06 | 中电普瑞电力工程有限公司 | A kind of method and system for being used to assess transformer DC magnetic bias influence |
| CN112713655A (en) * | 2020-12-29 | 2021-04-27 | 国网安徽省电力有限公司 | Regulating cloud-based transformer substation operation state studying and judging method |
| CN113268590A (en) * | 2021-04-06 | 2021-08-17 | 云南电网有限责任公司昆明供电局 | Power grid equipment running state evaluation method based on equipment portrait and integrated learning |
| CN116796483A (en) * | 2023-08-25 | 2023-09-22 | 北京城建智控科技股份有限公司 | Automatic topology coloring method and device for system diagram, electronic equipment and storage medium |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105260495A (en) * | 2015-07-31 | 2016-01-20 | 国家电网公司 | Decoupling simulation analysis method for identifying power angle instability reason of large-disturbance power grid |
| CN105260495B (en) * | 2015-07-31 | 2018-11-30 | 国家电网公司 | A kind of decoupling simulation analysis method of the big interference power grid generator rotor angle cause of destabilization of identification |
| CN105445585A (en) * | 2015-11-27 | 2016-03-30 | 广州供电局有限公司 | Fault diagnosis method and system for primary loop of power grid |
| CN105445585B (en) * | 2015-11-27 | 2018-04-13 | 广州供电局有限公司 | The method for diagnosing faults and system of power grid primary circuit |
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| CN106532961B (en) * | 2016-12-26 | 2019-08-27 | 北京四方继保自动化股份有限公司 | A kind of intelligent substation Interlocking Methods based on information fusion |
| CN106532961A (en) * | 2016-12-26 | 2017-03-22 | 北京四方继保自动化股份有限公司 | Intelligent substation anti-misoperation locking method based on information fusion |
| CN108256234A (en) * | 2018-01-19 | 2018-07-06 | 中电普瑞电力工程有限公司 | A kind of method and system for being used to assess transformer DC magnetic bias influence |
| CN108256234B (en) * | 2018-01-19 | 2023-09-22 | 中电普瑞电力工程有限公司 | Method and system for evaluating DC magnetic bias influence of transformer |
| CN112713655A (en) * | 2020-12-29 | 2021-04-27 | 国网安徽省电力有限公司 | Regulating cloud-based transformer substation operation state studying and judging method |
| CN112713655B (en) * | 2020-12-29 | 2023-05-02 | 国网安徽省电力有限公司 | Substation operation state studying and judging method based on regulation and control cloud |
| CN113268590A (en) * | 2021-04-06 | 2021-08-17 | 云南电网有限责任公司昆明供电局 | Power grid equipment running state evaluation method based on equipment portrait and integrated learning |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
| CN116796483A (en) * | 2023-08-25 | 2023-09-22 | 北京城建智控科技股份有限公司 | Automatic topology coloring method and device for system diagram, electronic equipment and storage medium |
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| CN104281982B (en) | 2018-08-07 |
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