CN103023022B - Take into account the transmission section power limit emulated computation method of circuit Real-time Monitoring Data - Google Patents
Take into account the transmission section power limit emulated computation method of circuit Real-time Monitoring Data Download PDFInfo
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- CN103023022B CN103023022B CN201210492510.6A CN201210492510A CN103023022B CN 103023022 B CN103023022 B CN 103023022B CN 201210492510 A CN201210492510 A CN 201210492510A CN 103023022 B CN103023022 B CN 103023022B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 40
- 230000006641 stabilisation Effects 0.000 claims abstract description 25
- 238000011105 stabilization Methods 0.000 claims abstract description 25
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010931 gold Substances 0.000 claims abstract description 6
- 229910052737 gold Inorganic materials 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims abstract description 5
- 238000004088 simulation Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 5
- 230000002411 adverse Effects 0.000 claims description 3
- 238000005094 computer simulation Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 102000000584 Calmodulin Human genes 0.000 description 1
- 108010041952 Calmodulin Proteins 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Abstract
The invention discloses a kind of transmission section power limit emulated computation method taking into account circuit Real-time Monitoring Data, according to stabilization of power grids result of calculation, critical circuits in electrical network is installed the on-line monitoring equipment such as microclimate, wire and gold utensil temperature survey, Real-time Collection line operational data, unification is sent to power system monitor center.By determining the environmental aspect residing for transmission line in real time, compared with completed stabilization of power grids result of calculation, checking and assessing the correctness of stability Calculation result.With reference to transmission line real-time running data, can reasonable arrangement current electric grid operational mode, and guide next year stabilization of power grids calculation and check.The transmission section power limit that the inventive method is applicable in Power System Stability Analysis calculates.
Description
Technical field
The present invention relates to a kind of section power limit emulated computation method taking into account circuit Real-time Monitoring Data, belong to Power System Stability Analysis technical field.
Background technology
In electric power system, all need the stabilization of power grids calculation and check work carrying out following 2-3 every year.Before carrying out stability Calculation task, first to carry out the establishment of boundary condition.The boundary condition of stability Calculation comprises network load prediction level, annual rack change project (comprising the situation of change of power supply and electrical network) etc. in following 2 to three years.After boundary condition is determined, the preparation of simulation calculation data can be carried out, mainly carry out emulated data modeling according to boundary condition and analogue system calculation requirement, Computed-torque control is mainly used in searching and finds the hidden danger that may exist in electrical network, these hidden danger comprise, and the transmitted power that the little wire diameter wire in electrical network bears exceedes that it allows operate power for a long time, area power grid voltage levvl does not meet the demands.According to calculating conclusion, the suggestion solving following electrical network problem is proposed.The whole stabilization of power grids analyzes the flow chart of simulation calculation as shown in Figure 1.
Calculate in check in the current stabilization of power grids and there is following problem: (1) ambient temperature and conductor overheating amount adopt fixed numbers, such as, the ambient temperature in the harshest situation is by the outdoor maximum temperature 40 degrees Celsius consideration of the hottest moon; (2) wire maximum safety temperature adopts fixed numbers, and overhead line conductor heating maximum permissible value is generally by 70 degrees Celsius of calculating.Such calculation and check result cannot reflect the ambient temperature of transmission line under practical operation situation and conductor overheating situation, and the confidence level of result is affected.
Current, in global range, the pressure of resources and environment aspect constantly increases, and the requirement of society to environmental protection, energy-saving and emission-reduction and sustainable development improves day by day; Meanwhile, the continuous propelling of electricity marketization process and user are to the continuous lifting of the quality of power supply and reliability requirement, and this requires that following electrical network must can provide supply of electric power that is safer, reliable, clean, high-quality.For this reason, the requirement of power grid construction should meet electric network reliability and fail safe needs on the one hand, as far as possible rationally should reduce power network construction project again on the other hand, alleviates passway for transmitting electricity and builds nervous pressure, with Economization on land and all kinds of resource.Thus, how to consider the actual conditions of electrical network when carrying out power grid security check analysis and calculating, become a problem demanding prompt solution.
Summary of the invention
The object of the invention is, for realizing taking into account circuit practical operation situation when power system stability calculation and check, proposing a kind of transmission section power limit Simulation Analysis method.
Technical scheme of the present invention is, the inventive method has taken into account the Real-time Monitoring Data of transmission line in electrical network; By microclimate, wire and gold utensil temperature survey on-line monitoring equipment that the key transmission circuit in electrical network is installed, Real-time Collection line operational data, unification is sent to power system monitor center; Apply the transmission line Real-time Monitoring Data collected, improve the accuracy of stabilization of power grids calculation and check result.
The step that the present invention takes into account the transmission section power limit emulated computation method of circuit Real-Time Monitoring is:
1, stabilization of power grids calculation and check.
Primary Calculation is carried out to the stabilization of power grids, finds out the critical circuits and generating set that may affect power grid security.
2, circuit runs Real time data acquisition.
Critical circuits in electrical network is installed microclimate, wire and gold utensil temperature survey on-line monitoring equipment, Real-time Collection line operational data, unification is sent to power system monitor center.
3, transmission line real-time running data is considered, rational power system operating mode.
Dispatching of power netwoks runs department after the real-time running data obtaining critical circuits in electrical network, specifies the environmental aspect residing for transmission line, compared with completed stabilization of power grids result of calculation, checks and assesses the correctness of stability Calculation result; With reference to transmission line real-time running data, reasonable arrangement current electric grid operational mode, and guides next year stabilization of power grids calculation and check.In the stability Calculation of next year, with reference to the most adverse circumstances of wire in the current year and the highest heat condition, in stability Calculation work from now on, adopt practicable transmission of electricity limit data.
The present invention's beneficial effect is compared with the prior art, (1) the inventive method considers the actual conditions of operation of power networks, makes calculation and check result more accurate; (2) the present invention can excavate passway for transmitting electricity potentiality as far as possible when ensureing safety, saves power grid construction investment, promotes energy-saving and emission-reduction.
The inventive method is applicable to transmission section power limit simulation calculation when carrying out stability analysis in electric power system.
Accompanying drawing explanation
Fig. 1 is the flow chart that existing stability simulation calculates;
Fig. 2 is the flow chart considering that the stability simulation of circuit Real-Time Monitoring calculates.
Embodiment
The embodiment that the present invention takes into account the transmission section power limit emulated computation method of circuit Real-Time Monitoring comprises the following steps:
1, stabilization of power grids calculation and check
The flow process of stabilization of power grids calculation and check comprises the following steps:
(1) boundary condition is formulated.The basis of compilation of boundary condition is the major network Rolling Planning of electrical network, the development electric grid investment plan of planning department and the construction project plan etc. of bouw/infra, is used for determining network load prediction level, annual power supply and power network construction project etc.
(2) grid simulation data modeling.According to the requirement of analogue system calculated data modeling, the power network construction project data in second and third year in fixed boundary condition are input in analogue system, set up the model of annual grid condition after can reflecting.Emulated data modeling contents comprises determines transmission line length, model, single double back data, by calculating the parameter such as resistance, reactance obtaining circuit, similar mode is adopted to calculate main transformer parameter, generator parameter, capacity reactance device parameter, again according to each element connected mode, finally erect electrical network computer sim-ulation system model.
(3) electricity net safety stable calculates.According to the requirement of " guiding rules of power system safety and stability ", based on the electric network model put up, carry out the Simulation Analysis such as trend, transient stability, minor interference under first, second level security stability criterion, find the safety and stability hidden danger existed in electrical network.Whether alternative route transmission power and the line power limit, search the little wire diameter wire that operate power in electrical network is out-of-limit, check area power grid voltage levvl simultaneously and meet the demands, find out voltage stabilization weakness zone in system.
2, on the critical circuits of passway for transmitting electricity, online monitoring equipment is installed, gathers real-time running data.
By being arranged on microclimate, wire and the gold utensil on-line temperature monitoring equipment on transmission line, the first-hand meteorologic parameter data that the temperature on monitored overhead line structures, humidity, wind direction, wind speed, rainfall, atmospheric pressure etc. are detailed can be obtained; By installing sensor for measuring temperature on wire and gold utensil, pass field wires and node intensification situation back rear Surveillance center in real time, then in conjunction with the parameter such as temperature, humidity, wind speed, wind direction, sunshine of site environment, reference line conveying capacity, realize analyzing wire overtemperature, sag trend, effectively solve the electric power accident that conductor temperature raises, sag reduces and causes.
3, according to real-time running data, formulate current electric grid operational mode and and guide stability Calculation work in the coming year.
After acquisition transmission line real-time measuring data, carry out following work:
(1) stability Calculation result is adjusted.After obtaining transmission line real-time running data, can determine that environmental aspect residing for transmission line and circuit generate heat situation in real time, thus determine the actual fed power limit of transmission line.This limit and the stabilization of power grids are calculated compared with the transmission line stability limit data considered, can check and assess the accuracy of stability Calculation result.
(2) reasonable arrangement power system operating mode.According to stabilization of power grids calculation and check result, and with reference to transmission line real-time running data, the real-time transmission power limit of each transmission line section can be calculated, calmodulin binding domain CaM network load level, can the service work of the grid equipment such as reasonable arrangement circuit, generator, such as, when transmission cross-section power margin is larger, suitably can arrange overhaul of the equipments more, when power margin is less, then should reduces or not arrange grid maintenance work.Adjustment current electric grid operational mode can be reached like this, adapt to the demand of operation of power networks real-time change.
(3) next year stabilization of power grids calculation and check is instructed.In the stability Calculation of next year, with reference to the current year and the most adverse circumstances of wire of forcasted years and the highest heat condition in the past, in stability Calculation work, adopt practicable transmission of electricity limit data, result of calculation Feasible degree is significantly improved.
Claims (2)
1. take into account a section power limit emulated computation method for circuit Real-time Monitoring Data, comprise stabilization of power grids calculation and check, it is characterized in that, described method has taken into account the Real-time Monitoring Data of transmission line in electrical network; By microclimate, wire and gold utensil temperature survey on-line monitoring equipment that critical circuits in electrical network is installed, Real-time Collection critical circuits service data, is sent to power system monitor center by Real-time Monitoring Data and the unification of critical circuits service data; And in conjunction with the temperature of critical circuits site environment, humidity, wind speed, wind direction, sunshine parameter, with reference to critical circuits conveying capacity, realize analyzing critical circuits wire overtemperature, sag trend, effectively solve the electric power accident that critical circuits conductor temperature raises, sag reduces and causes; Apply the transmission line Real-time Monitoring Data collected, improve the accuracy of stabilization of power grids calculation and check result;
Described method, after the real-time running data obtaining critical circuits in electrical network, specifies the environmental aspect residing for transmission line, compared with completed stabilization of power grids calculation and check result, checks and assesses the correctness of stabilization of power grids calculation and check result; With reference to critical circuits real-time running data, reasonable arrangement current electric grid operational mode, and guides next year stabilization of power grids calculation and check; In the stabilization of power grids calculation and check of next year, with reference to the most adverse circumstances of critical circuits wire in the current year and the highest heat condition, in stabilization of power grids calculation and check work from now on, adopt practicable transmission of electricity limit data.
2. take into account the section power limit emulated computation method of circuit Real-time Monitoring Data according to claim 1, it is characterized in that, described stabilization of power grids calculation and check comprises grid simulation data modeling, the power network construction project data in second and third year in fixed boundary condition are input in analogue system, set up the model of annual grid condition after can reflecting; Emulated data modeling contents comprises determines transmission line length, model, single double back data, by calculating the resistance, the reactance parameter that obtain transmission line; Calculate main transformer parameter, generator parameter, capacity reactance device parameter according to main transformer, generator and capacity reactance data, then according to main transformer, generator and capacity reactance connected mode, finally erect electrical network computer sim-ulation system model.
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| CN105281330B (en) * | 2015-11-09 | 2017-12-19 | 山东大学 | One kind sends the hot valued methods of wind-powered electricity generation transmission line of electricity outside |
| CN109165820A (en) * | 2018-08-06 | 2019-01-08 | 南京理工大学 | A kind of methods of risk assessment of aerial condutor and its splicing fitting excess temperature |
| CN110458405A (en) * | 2019-07-10 | 2019-11-15 | 清华大学 | It is a kind of based on electric power-Characteristics of micrometeorology data power system security method for early warning |
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| CN102055243A (en) * | 2010-12-15 | 2011-05-11 | 北京交通大学 | High-voltage transmission line/ tower long-distance video on-line monitoring system |
| CN102215253A (en) * | 2011-05-18 | 2011-10-12 | 中国电力科学研究院 | Layered exchange and control method for real-time monitoring system data by power dispatching |
| JP2012010567A (en) * | 2010-06-28 | 2012-01-12 | Toshiba Corp | Power system monitoring control apparatus |
| CN102593829A (en) * | 2012-03-12 | 2012-07-18 | 广东省电力调度中心 | Method and device for determining transmission section in consideration of key branch circuit |
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| JP2012010567A (en) * | 2010-06-28 | 2012-01-12 | Toshiba Corp | Power system monitoring control apparatus |
| CN101957891A (en) * | 2010-09-14 | 2011-01-26 | 天津理工大学 | Static safety analysis system of modularization power grid on basis of communication system |
| CN102055243A (en) * | 2010-12-15 | 2011-05-11 | 北京交通大学 | High-voltage transmission line/ tower long-distance video on-line monitoring system |
| CN102215253A (en) * | 2011-05-18 | 2011-10-12 | 中国电力科学研究院 | Layered exchange and control method for real-time monitoring system data by power dispatching |
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Effective date of registration: 20180709 Address after: 330096 No. 88, min Qiang Road, private science and Technology Park, Nanchang, Jiangxi Co-patentee after: State Grid Corporation of China Patentee after: Power Science Research Institute of Jiangxi Electric Power Co., Ltd. Address before: 330088 No. 88, min Qiang Road, private science and Technology Park, Nanchang, Jiangxi Co-patentee before: State Grid Corporation of China Patentee before: Jiangxi Electric Power Science Academy |