CN107067101B - More fire point power grid risks minimize emergence treating method and system - Google Patents

More fire point power grid risks minimize emergence treating method and system Download PDF

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CN107067101B
CN107067101B CN201710083045.3A CN201710083045A CN107067101B CN 107067101 B CN107067101 B CN 107067101B CN 201710083045 A CN201710083045 A CN 201710083045A CN 107067101 B CN107067101 B CN 107067101B
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陆佳政
郭俊
李波
徐勋建
简洲
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Hunan Disaster Prevention Technology Co ltd
Xiang-Electric Experiment And Research Technology Co Of Hunan Province
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Abstract

The invention discloses a kind of more fire point power grid risks to minimize emergence treating method, including：Establish power network section collection；Identification obtains earth's surface mountain fire fire point set；Determine that mountain fire fire point triggers the transmission line of electricity set of alarm；The tripping operation probability of each circuit in computing electric power line set；Calculate the power grid risk factor of each circuit；Calculate the power network extent of injury of each fire point；According to having put out a fire, equipment is layouted, and is established optimization problem model, is determined optimisation strategy.Present invention also offers a kind of more fire point power grid risks to minimize emergency disposal system.Beneficial effects of the present invention：Influence degree of the fire point to electricity net safety stable can effectively be quantified, determine optimal mountain fire disposal order of priority；Optimal fire extinguishing equipment optimal dispatching scheme can be formulated, it is ensured that the mountain fire disaster big to electric network influencing obtains priority handle, and power network mountain fire calamity source is reduced into minimum degree according to equipment arrangement of having put out a fire.

Description

More fire point power grid risks minimize emergence treating method and system
Technical field
The present invention relates to electrical engineering technical field, is minimized in particular to a kind of more fire point power grid risks emergent Method of disposal and system.
Background technology
The AC/DC transmission lines such as extra-high voltage are to be related to the important energy source passage of national economy, because the friendships such as extra-high voltage are straight It is wide across region to flow power transmission line corridor, area coverage is big, and transmission line of electricity passes through numerous mountain fires region occurred frequently, power transmission line when serious Road is put out a fire nearby more than a day up to thousands of fiery points and equips limited amount, the existing disposal side for putting out a fire nearby or having fire to put out a fire Formula, easily omit and threaten important line big mountain fire disaster, cause tens of transmission line forest fires for including extra-high voltage grade Tripping operation is stopped transport, serious threat to bulk power grid safe and stable operation and social normal power supply.Therefore, it is necessary to study power network mountain fire calamity The quick optimal emergence treating method of the more fire points of evil, to ensure that bulk power grid safe operation provides important technical support.
Patent CN104915775A proposes a kind of risk assessment of transmission line forest fire disaster and Emergency decision method, should Method assesses the risk size of mountain fire with transmission line forest fire tripping operation probability and the load loss amount that trips, and is formulated with this at mountain fire Strategy is put, but does not analyze influence degree of the mountain fire to the safety and stability of power network；Patent CN104217375B proposes a kind of base In the emergent point site selecting method of the transmission line forest fire of graph theory, pass through statistical history mountain fire distribution map, power line load loses number The emergent point of optimal mountain fire with the minimum time selection of transmission line forest fire emergency measure implementation, but the non-quantitative analysis of the patent Influence degree of the mountain fire to specific circuit and power grid security, it is impossible to determine the precedence of mountain fire emergency disposal；Patent CN103971484A proposes a kind of a wide range of transmission line forest fire emergency disposal Intelligent Decision-making Method, attached according only to transmission line of electricity The number and transmission line of electricity voltage class of periareon determine fire extinguishing disposal method, and non-quantitative analysis mountain fire is to circuit and power grid security Threat degree, it is impossible to generate optimal mountain fire Disposal Strategies；Patent CN103961825B proposes a kind of special based on fire behavior The transmission line forest fire intelligent emergent method of disposal of analysis is levied, according to its prestige to transmission line of electricity of the fire behavior signature analysis of mountain fire Side of body degree, but the patent does not analyze influence degree of the mountain fire to whole electricity net safety stable, it is impossible to priority handle is instructed to electricity The maximum mountain fire disaster of net security threat.
Therefore, existing technology is unable to each fire point of quantitative analysis to electricity net safety stable threat degree, can not determine optimal Mountain fire disposal method.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of more fire point power grid risks to minimize emergency disposal side Method and system, can quantitative analysis it is each fire point to electricity net safety stable threat degree, and then according to fire point to electricity net safety stable prestige The size of the side of body formulates the optimal rescue programs of fire extinguishing order of priority and fire extinguishing equipment so that threatens power network big fiery point Priority handle is obtained, ensures safe and stable operation of the bulk power grid in more fire point outbursts.
The invention provides a kind of more fire point power grid risks to minimize emergence treating method, and this method includes：
Step 1, according to electric network composition and planning operation mode, power network line is divided into some sections, foundation contains m The power network section collection G of individual section；
In formula, kiFor i-th of section, niThe power transmission line travel permit number included for i-th of section, lijFor the jth of i-th of section Bar transmission line of electricity；
Step 2, earth's surface mountain fire fire point set Z is obtained by satellite infrared view data, identification：
Z=[Z1 Z2 ... Zi ... Zg]
In formula, g is fire point number；
Step 3, all mountain fire fire points in the range of power network are filtered out, determine that mountain fire fire point triggers the transmission line of electricity collection of alarm Close S1：
S1=[lz1 lz2 ... lzi ... lzg]
In formula, lziFor fiery point ZiTrigger the transmission line of electricity set of alarm；
Step 4, according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In each circuit tripping operation it is general Rate：
P=[Pz1 Pz2 ... Pzi ... Pzp]
In formula, PziFor fiery point ZiTrigger the transmission line forest fire tripping operation probability of alarm；
Wherein, transmission line of electricity set S1In each circuit tripping operation probability according to transmission line forest fire trip probabilistic model calculate Obtain, transmission line forest fire tripping operation probabilistic model is：
Pi(U)=aPg(U)+b·Pp(U)
In formula, a is that because of the tripping operation of mountain fire history, relatively breakdown number accounts for total time of mountain fire history tripping operation under a certain voltage class Several ratios, b are because the alternate breakdown number of mountain fire history tripping operation accounts for the ratio of mountain fire history tripping operation total degree under a certain voltage class Example, Pg(U) it is to occur relatively to puncture the probability for causing transmission line of electricity to trip, P under a certain voltage classp(U) it is a certain voltage etc. The lower probability that alternate breakdown occurs and causes transmission line of electricity to trip of level；
Step 5, the power grid risk factor of each circuit is calculated：
Transmission line of electricity is alerted for the mountain fire in section, is specifically included：
Step 501, according to the power network section collection G of m section in step 1, to transmission line of electricity set S1In each circuit institute Section positioned；
Step 502, in calculation procedure 501 section significance level, calculation formula is：
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
Step 503, according to transmission line of electricity set S1In section residing for each circuit, calculate the power grid risk of every circuit because Sub- Kzi, calculation formula is：
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIt is disconnected where the circuit Circuit n Real-time Power Flow, L in the k of faceijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyFor circuit i events Barrier causes the load power variable quantity that generator y is shifted；HknCircuit n trend conveys limit, H in the section k where the circuiti Limit, D are conveyed for circuit i trendkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger alarm Transmission line forest fire tripping operation probability；
Circuit is alerted for the mountain fire for being not at section, according to the voltage class size of circuit and circuit mountain fire tripping operation probability The power grid risk factor of every circuit is calculated, calculation formula is：
In formula, KziFor the power grid risk factor of circuit, PziIt is the circuit in fiery point ZiTrigger the transmission line forest fire of alarm Trip probability；
Step 6, the power grid risk factor K drawn according to step 5zi, calculate each fiery point ZiPower network extent of injury Rzi, when one When individual fire point only alerts to a railway superstructures, the power network risk factor for alerting circuit is the power network extent of injury of the fire point Value；When the point-to-points bar circuit of a fire forms alarm simultaneously, the danger of the fire point should be more serious, and fire is put and triggers alarm Power network degree of danger of the circuit power network risks and assumptions sum as the fire point；And establish the power network extent of injury on all fire points Set R：
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm power transmission line of initiation The power grid risk factor values on road, RziFor fiery point ZiThe power network extent of injury；
Step 7, layouted according to existing fire extinguishing equipment, establish Optimized model, object function is that power grid risk is rescued with fire extinguishing The product for helping the time minimizes, and introduces the relation that exponential function describes the power grid risk factor and the power network extent of injury, fire fighting and rescue Time puts distance with fire according to fire extinguishing equipment divided by the average translational speed of fire extinguishing equipment, Optimized model are：
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diTo go out The fiery point Z of fire equipment distanceiDistance, average translational speed is 80km/h.
It is that satellite infrared image is received by satellite data reception device in step 2 as further improvement of the invention, And earth's surface mountain fire fire point set Z is calculated using fire point identification algorithm.
Further improved as of the invention, in step 3, using neighbouring grid Fast Match Algorithm, mountain fire is calculated Fire point triggers the transmission line of electricity set of alarm.
As currently preferred, a values are that 0.98, b values are 0.02.
Present invention also offers a kind of more fire point power grid risks to minimize emergency disposal system, including：
Section set computing system, for according to electric network composition and planning operation mode, if power network line is divided into Dry section, establish the power network section collection G containing m section；
In formula, kiFor i-th of section, niThe power transmission line travel permit number included for i-th of section, lijFor the jth of i-th of section Bar transmission line of electricity；
Forest fire system, for obtaining earth's surface mountain fire fire point set Z by satellite infrared view data, identification：
Z=[Z1 Z2 ... Zi ... Zg]
In formula, g is fire point number；
Transmission line of electricity set screening system, for filtering out all mountain fire fire points in the range of power network, determine mountain fire fire point Trigger the transmission line of electricity set S of alarm1：
S1=[lz1 lz2 ... lzi ... lzg]
In formula, lziFor fiery point ZiTrigger the transmission line of electricity set of alarm；
Trip probability calculation system, for according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In The tripping operation probability of each circuit：
P=[Pz1 Pz2 ... Pzi ... Pzp]
In formula, PziFor fiery point ZiTrigger the transmission line forest fire tripping operation probability of alarm；
Wherein, transmission line forest fire tripping operation probabilistic model is in the probability calculation system that trips：
Pi(U)=aPg(U)+b·Pp(U)
In formula, a is that because of the tripping operation of mountain fire history, relatively breakdown number accounts for total time of mountain fire history tripping operation under a certain voltage class Several ratios, b are because the alternate breakdown number of mountain fire history tripping operation accounts for the ratio of mountain fire history tripping operation total degree under a certain voltage class Example, Pg(U) it is to occur relatively to puncture the probability for causing transmission line of electricity to trip, P under a certain voltage classp(U) it is a certain voltage etc. The lower probability that alternate breakdown occurs and causes transmission line of electricity to trip of level；
Power grid risk factor computing system, for calculating the power grid risk factor of each circuit；
Transmission line of electricity is alerted for the mountain fire of section, is specifically included：
Alignment system, for the power network section collection G of the m section in section set, to transmission line of electricity set S1In Section where each circuit is positioned；
Section significance level computing system, for calculating the significance level of section, calculation formula is：
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
Single line power grid risk factor computing system, for according to transmission line of electricity set S1In it is disconnected residing for each circuit Face, calculate the power grid risk factor K of every circuitzi, calculation formula is：
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIt is disconnected where the circuit Circuit n Real-time Power Flow, L in the k of faceijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyFor circuit i events Barrier causes the load power variable quantity that generator y is shifted；HknCircuit n trend conveys limit, H in the section k where the circuiti Limit, D are conveyed for circuit i trendkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger alarm Transmission line forest fire tripping operation probability；
Circuit is alerted for the mountain fire for being not at section, according to the voltage class size of circuit and circuit mountain fire tripping operation probability The power grid risk factor of every circuit is calculated, calculation formula is：
In formula, KziFor the power grid risk factor of circuit, PziIt is the circuit in fiery point ZiTrigger the transmission line forest fire of alarm Trip probability；
Power network extent of injury set computing system, for the power grid risk factor being calculated according to the power grid risk factor Kzi, calculate each fiery point ZiPower network extent of injury Rzi, when a fire point only alerts to a railway superstructures, alert the electricity of circuit Net risk factor is the power network extent of injury value of the fire point；When the point-to-points bar circuit of a fire forms alarm simultaneously, the fire The danger of point should be more serious, and fire is put to power network danger journey of the circuit power network risks and assumptions sum as the fire point of initiation alarm Degree；And establish the power network extent of injury set R on all fire points：
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm power transmission line of initiation The power grid risk factor values on road, RziFor fiery point ZiThe power network extent of injury；
Optimization system, for being layouted according to existing fire extinguishing equipment, establish Optimized model, object function be power grid risk with The product of fire fighting and rescue time minimizes, and introduces the relation that exponential function describes the power grid risk factor and the power network extent of injury, goes out Fiery rescue time puts distance with fire according to fire extinguishing equipment divided by the average translational speed of fire extinguishing equipment, Optimized model are：
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diTo go out The fiery point Z of fire equipment distanceiDistance, average translational speed is 80km/h.
As further improvement of the invention, forest fire system is to receive satellite infrared by satellite data reception device Image, and earth's surface mountain fire fire point set Z is calculated using fire point identification algorithm.
As further improvement of the invention, transmission line of electricity set set screening system uses neighbouring grid Rapid matching to calculate Method, the transmission line of electricity set that mountain fire fire point triggers alarm is calculated.
As currently preferred, a values are that 0.98, b values are 0.02.
Beneficial effects of the present invention are：
1st, it can effectively quantify influence degree of the fire point to electricity net safety stable, determine optimal mountain fire disposal order of priority；
2nd, arrangement can be equipped according to existing fire extinguishing, formulates optimal fire extinguishing equipment optimal dispatching scheme, it is ensured that right The big mountain fire disaster of electric network influencing obtains priority handle, and power network mountain fire calamity source is reduced into minimum degree；
3rd, it is workable, provide effective technological approaches for transmission line forest fire emergency disposal.
Brief description of the drawings
Fig. 1 is a kind of flow signal of more fire point power grid risks minimum emergence treating methods described in the embodiment of the present invention Figure；
Fig. 2 is the sectional schematic diagram of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1, as shown in figure 1, a kind of more fire point power grid risks described in the embodiment of the present invention minimize emergency disposal Method, this method include：
Step 1, as shown in Fig. 2 according to electric network composition and planning operation mode, power network line is divided into some disconnected Face, establish the power network section collection G containing 2 sections；
In formula, kAFor section A, kBFor section B, lA1For section A the 1st article of transmission line of electricity, lA2The 2nd article for section A is defeated Electric line, lA3For section A the 3rd article of transmission line of electricity, lB1For section B the 1st article of transmission line of electricity, lB2The 2nd article for section B is defeated Electric line, lB3For section B the 3rd article of transmission line of electricity, lB4For section B the 4th article of transmission line of electricity, lB5The 5th article for section B is defeated Electric line, lB6For section B the 6th article of transmission line of electricity, lB7For section B the 7th article of transmission line of electricity.
Step 2, by satellite infrared reception device, satellite infrared image is received, identifies to obtain using fire point identification algorithm Earth's surface mountain fire fire point set Z, fire point are as shown in Figure 2：
Z=[Z1 Z2 Z3 Z4 Z5]。
Step 3, all mountain fire fire points in the range of power network are filtered out, using neighbouring grid Fast Match Algorithm, determine mountain Fiery point triggers the transmission line of electricity set S of alarm1：
S1=[lA1 lA2 lA3 lB1 lB2 lB5 lB6]。
Step 4, according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In each circuit tripping operation it is general Rate：
Transmission line forest fire tripping operation probabilistic model be：
Pi(U)=aPg(U)+b·Pp(U)
In formula, a is that because of the tripping operation of mountain fire history, relatively breakdown number accounts for total time of mountain fire history tripping operation under a certain voltage class Several ratios, b are because the alternate breakdown number of mountain fire history tripping operation accounts for the ratio of mountain fire history tripping operation total degree under a certain voltage class Example, Pg(U) it is to occur relatively to puncture the probability for causing transmission line of electricity to trip, P under a certain voltage classp(U) it is a certain voltage etc. The lower probability that alternate breakdown occurs and causes transmission line of electricity to trip of level.
According to live circuit practical operation situation statistical analysis, about 98% mountain fire tripping operation is relatively to puncture, 2% Mountain fire tripping operation is alternate breakdown, and therefore, a values are that 0.98, b values are 0.02.Pg(U) transported according to circuit away from ground distance and circuit Row voltage is calculated, Pp(U) it is calculated according to circuit phase spacing and circuit working voltage.
Transmission line of electricity set S1In the tripping operation probability of each circuit be：
P1(U)=0.98 × 0.37+0.02 × 0.87=0.38
P2(U)=0.98 × 0.93+0.02 × 0.43=0.92
P3(U)=0.98 × 0.93+0.02 × 0.43=0.92
P4(U)=0.98 × 0.70+0.02 × 0.2=0.69
P5(U)=0.98 × 0.21+0.02 × 0.71=0.22
P6(U)=0.98 × 0.74+0.02 × 0.24=0.73
P7(U)=0.98 × 0.74+0.02 × 0.24=0.73
Step 5, transmission line of electricity is alerted for the mountain fire in section, specifically included：
Step 501, according to the power network section collection of 2 sections in step 1, to transmission line of electricity set S1In where each circuit Section positioned, wherein, lA1、lA2、lA3In section kA, lB1、lB2、lB5、lB6In section kB。
Step 502, the significance level of cross sections is calculated, calculation formula is：
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
Section kAThe trend of conveying is 690MW, section kBThe trend of conveying is 810MW.Section k is calculatedAImportant journey Spend and beSection kBSignificance level be
Step 503, according to transmission line of electricity set S1In section residing for each circuit, calculate the power grid risk of every circuit because Sub- Kzi, calculation formula is：
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIt is disconnected where the circuit Circuit n Real-time Power Flow, L in the k of faceijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyFor circuit i events Barrier causes the load power variable quantity that generator y is shifted；HknCircuit n trend conveys limit, H in the section k where the circuiti Limit, D are conveyed for circuit i trendkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger alarm Transmission line forest fire tripping operation probability；
The power grid risk factor that every circuit is calculated is respectively：
Transmission line of electricity lA1The power grid risk factor be：
Transmission line of electricity lA2The power grid risk factor be：
Transmission line of electricity lA3The power grid risk factor be：
Transmission line of electricity lB1The power grid risk factor be：
Transmission line of electricity lB2The power grid risk factor be：
Transmission line of electricity lB5The power grid risk factor be：
Transmission line of electricity lB6The power grid risk factor be：
Step 6, the power grid risk factor K drawn according to step 5zi, calculate each fiery point ZiPower network extent of injury Rzi, when one When individual fire point only alerts to a railway superstructures, the power network risk factor for alerting circuit is the power network extent of injury of the fire point Value；When the point-to-points bar circuit of a fire forms alarm simultaneously, the danger of the fire point should be more serious, and fire is put and triggers alarm Power network degree of danger of the circuit power network risks and assumptions sum as the fire point；And establish the power network extent of injury on all fire points Set R：
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm power transmission line of initiation The power grid risk factor values on road, RziFor fiery point ZiThe power network extent of injury；
It can be obtained from Fig. 2, fiery point Z1Influence transmission line of electricity lA1, fiery point Z2Influence transmission line of electricity lA2、lA3, fiery point Z3Influence Transmission line of electricity lB1, fiery point Z4Influence transmission line of electricity lB2, fiery point Z5Influence transmission line of electricity lB5、lB6；
Therefore,
Power network extent of injury collection is calculated to be combined into：
R=[Rz1 Rz2 ... Rz5]=[0.037 0.208 0.089 0.017 0.138].
Step 7, layouted according to existing fire extinguishing equipment, establish Optimized model, object function is that power grid risk is rescued with fire extinguishing The product for helping the time minimizes, and introduces the relation that exponential function describes the power grid risk factor and the power network extent of injury, fire fighting and rescue Time puts distance with fire according to fire extinguishing equipment divided by the average translational speed of fire extinguishing equipment, Optimized model are：
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diTo go out The fiery point Z of fire equipment distanceiDistance, average translational speed is 80km/h；
Existing fire extinguishing equipment quantity is 3 in the present embodiment, and fire is counted out as 5, solving-optimizing model, at obtained mountain fire Putting optimisation strategy is：The disposal of equipment 1 mountain fire 2, the disposal of equipment 2 mountain fire 3, the disposal mountain fire 5 of equipment 3.Wherein, model solution can be adopted Solved with the methods of linear programming of routine, enumerative technique.
Embodiment 2, a kind of more fire point power grid risks that the present invention applies described in example minimize emergency disposal system, including：
Section set computing system, for according to electric network composition and planning operation mode, if power network line is divided into Dry section, the power network section collection G containing m section is established, as shown in Fig. 2 according to electric network composition and planning operation mode, will Power network line is divided into some sections, establishes the power network section collection G containing 2 sections；
In formula, kAFor section A, kBFor section B, lA1For section A the 1st article of transmission line of electricity, lA2The 2nd article for section A is defeated Electric line, lA3For section A the 3rd article of transmission line of electricity, lB1For section B the 1st article of transmission line of electricity, lB2The 2nd article for section B is defeated Electric line, lB3For section B the 3rd article of transmission line of electricity, lB4For section B the 4th article of transmission line of electricity, lB5The 5th article for section B is defeated Electric line, lB6For section B the 6th article of transmission line of electricity, lB7For section B the 7th article of transmission line of electricity.
Forest fire system, for receiving satellite infrared image by satellite data reception device, and recognized using fire point Earth's surface mountain fire fire point set Z is calculated in algorithm, and fire point is as shown in Figure 1：
Z=[Z1 Z2 Z3 Z4 Z5]。
Transmission line of electricity set screening system, for filtering out all mountain fire fire points in the range of power network, using neighbouring grid Fast Match Algorithm, determine that mountain fire fire point triggers the transmission line of electricity set S of alarm1：
S1=[lA1 lA2 lA3 lB1 lB2 lB5 lB6]。
Trip probability calculation system, for according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In The tripping operation probability of each circuit：
Transmission line forest fire tripping operation probabilistic model be：
Pi(U)=aPg(U)+b·Pp(U)
According to live circuit practical operation situation statistical analysis, about 98% mountain fire tripping operation is relatively to puncture, 2% Mountain fire tripping operation is alternate breakdown, and therefore, a values are that 0.98, b values are 0.02.Pg(U) transported according to circuit away from ground distance and circuit Row voltage is calculated, Pp(U) it is calculated according to circuit phase spacing and circuit working voltage.
Transmission line of electricity set S1In the tripping operation probability of each circuit be：
P1(U)=0.98 × 0.37+0.02 × 0.87=0.38
P2(U)=0.98 × 0.93+0.02 × 0.43=0.92
P3(U)=0.98 × 0.93+0.02 × 0.43=0.92
P4(U)=0.98 × 0.70+0.02 × 0.2=0.69
P5(U)=0.98 × 0.21+0.02 × 0.71=0.22
P6(U)=0.98 × 0.74+0.02 × 0.24=0.73
P7(U)=0.98 × 0.74+0.02 × 0.24=0.73
Power grid risk factor computing system, for calculating the power grid risk factor of each circuit；
Transmission line of electricity is alerted for the mountain fire of section, is specifically included：
Alignment system, for the power network section collection G of the m section in section set, to transmission line of electricity set S1In Section where each circuit is positioned, in the present embodiment, according to the power network section collection of 2 sections, to transmission line of electricity set S1 In section where each circuit positioned, wherein, lA1、lA2、lA3In section kA, lB1、lB2、lB5、lB6In section kB。
Section significance level computing system, for calculating the significance level of section, calculation formula is：
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
In the present embodiment, section kAThe trend of conveying is 690MW, section kBThe trend of conveying is 810MW.It is calculated disconnected Face kASignificance level beSection kBSignificance level be
Single line power grid risk factor computing system, for according to transmission line of electricity set S1In it is disconnected residing for each circuit Face, calculate the power grid risk factor K of every circuitzi, calculation formula is：
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIt is disconnected where the circuit Circuit n Real-time Power Flow, L in the k of faceijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyFor circuit i events Barrier causes the load power variable quantity that generator y is shifted；HknCircuit n trend conveys limit, H in the section k where the circuiti Limit, D are conveyed for circuit i trendkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger alarm Transmission line forest fire tripping operation probability；
In the present embodiment, the power grid risk factor that every circuit is calculated is respectively：
Transmission line of electricity lA1The power grid risk factor be：
Transmission line of electricity lA2The power grid risk factor be：
Transmission line of electricity lA3The power grid risk factor be：
Transmission line of electricity lB1The power grid risk factor be：
Transmission line of electricity lB2The power grid risk factor be：
Transmission line of electricity lB5The power grid risk factor be：
Transmission line of electricity lB6The power grid risk factor be：
Circuit is alerted for the mountain fire for being not at section, according to the voltage class size of circuit and circuit mountain fire tripping operation probability The power grid risk factor of every circuit is calculated, calculation formula is：
In formula, KziFor the power grid risk factor of circuit, PziIt is the circuit in fiery point ZiTrigger the transmission line forest fire of alarm Trip probability；
Power network extent of injury set computing system, for the power grid risk factor being calculated according to the power grid risk factor Kzi, calculate each fiery point ZiPower network extent of injury Rzi, when a fire point only alerts to a railway superstructures, alert the electricity of circuit Net risk factor is the power network extent of injury value of the fire point；When the point-to-points bar circuit of a fire forms alarm simultaneously, the fire The danger of point should be more serious, and fire is put to power network danger journey of the circuit power network risks and assumptions sum as the fire point of initiation alarm Degree；And establish the power network extent of injury set R on all fire points：
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm power transmission line of initiation The power grid risk factor values on road, RziFor fiery point ZiThe power network extent of injury；
It can be obtained from Fig. 2, fiery point Z1Influence transmission line of electricity lA1, fiery point Z2Influence transmission line of electricity lA2、lA3, fiery point Z3Influence Transmission line of electricity lB1, fiery point Z4Influence transmission line of electricity lB2, fiery point Z5Influence transmission line of electricity lB5、lB6；
Therefore,
Power network extent of injury collection is calculated to be combined into：
R=[Rz1 Rz2 ... Rz5]=[0.037 0.208 0.089 0.017 0.138].
Optimization system, for being layouted according to existing fire extinguishing equipment, establish Optimized model, object function be power grid risk with The product of fire fighting and rescue time minimizes, and introduces the relation that exponential function describes the power grid risk factor and the power network extent of injury, goes out Fiery rescue time puts distance with fire according to fire extinguishing equipment divided by the average translational speed of fire extinguishing equipment, Optimized model are：
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diTo go out The fiery point Z of fire equipment distanceiDistance, average translational speed is 80km/h.
Existing fire extinguishing equipment quantity is 3 in the present embodiment, and fire is counted out as 5, solving-optimizing model, at obtained mountain fire Putting optimisation strategy is：The disposal of equipment 1 mountain fire 2, the disposal of equipment 2 mountain fire 3, the disposal mountain fire 5 of equipment 3.Wherein, model solution can be adopted Solved with the methods of linear programming of routine, enumerative technique.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (8)

1. a kind of more fire point power grid risks minimize emergence treating method, it is characterised in that this method includes：
Step 1, according to electric network composition and planning operation mode, power network line is divided into some sections, established disconnected containing m The power network section collection G in face；
<mrow> <mi>G</mi> <mo>=</mo> <mfenced open = "[" close = "]"> <mtable> <mtr> <mtd> <msub> <mi>k</mi> <mn>1</mn> </msub> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mn>2</mn> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mi>i</mi> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mi>m</mi> </msub> </mtd> </mtr> </mtable> </mfenced> <mo>=</mo> <mfenced open = "[" close = "]"> <mtable> <mtr> <mtd> <msub> <mi>l</mi> <mn>11</mn> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mn>12</mn> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>1</mn> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>1</mn> <msub> <mi>n</mi> <mn>1</mn> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mn>21</mn> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mn>22</mn> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>2</mn> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>2</mn> <msub> <mi>n</mi> <mn>2</mn> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mn>1</mn> </mrow> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mn>2</mn> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <msub> <mi>in</mi> <mi>i</mi> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mn>1</mn> </mrow> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mn>2</mn> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <msub> <mi>mn</mi> <mi>m</mi> </msub> </mrow> </msub> </mtd> </mtr> </mtable> </mfenced> </mrow>
In formula, kiFor i-th of section, niThe power transmission line travel permit number included for i-th of section, lijJ-th strip for i-th of section is defeated Electric line；
Step 2, earth's surface mountain fire fire point set Z is obtained by satellite infrared view data, identification：
Z=[Z1 Z2 ... Zi ... Zg]
In formula, g is fire point number；
Step 3, all mountain fire fire points in the range of power network are filtered out, determine that mountain fire fire point triggers the transmission line of electricity set S of alarm1：
S1=[lz1 lz2 ... lzi ... lzg]
In formula, lziFor fiery point ZiTrigger the transmission line of electricity set of alarm；
Step 4, according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In each circuit tripping operation probability：
P=[Pz1 Pz2 ... Pzi ... Pzp]
In formula, PziFor fiery point ZiTrigger the transmission line forest fire tripping operation probability of alarm；
Wherein, transmission line of electricity set S1In each circuit tripping operation probability according to transmission line forest fire trip probabilistic model be calculated, Transmission line forest fire tripping operation probabilistic model be：
Pi(U)=aPg(U)+b·Pp(U)
In formula, a is that because of the tripping operation of mountain fire history, relatively breakdown number accounts for mountain fire history tripping operation total degree under a certain voltage class Ratio, b are because the alternate breakdown number of mountain fire history tripping operation accounts for the ratio of mountain fire history tripping operation total degree, P under a certain voltage classg (U) it is to occur relatively to puncture the probability for causing transmission line of electricity to trip, P under a certain voltage classp(U) it is under a certain voltage class The probability that alternate breakdown causes transmission line of electricity to trip occurs；
Step 5, the power grid risk factor of each circuit is calculated：
Transmission line of electricity is alerted for the mountain fire in section, is specifically included：
Step 501, according to the power network section collection G of m section in step 1, to transmission line of electricity set S1In it is disconnected where each circuit Face is positioned；
Step 502, in calculation procedure 501 section significance level, calculation formula is：
<mrow> <msub> <mi>D</mi> <mi>k</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>Q</mi> <mi>k</mi> </msub> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>m</mi> </munderover> <msub> <mi>Q</mi> <mi>j</mi> </msub> </mrow> </mfrac> </mrow>
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
Step 503, according to transmission line of electricity set S1In section residing for each circuit, calculate the power grid risk factor of every circuit Kzi, calculation formula is：
<mrow> <msub> <mi>K</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mo>|</mo> <mfrac> <msub> <mi>I</mi> <mi>i</mi> </msub> <msub> <mi>I</mi> <mrow> <mi>i</mi> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> </mfrac> <mo>|</mo> <mo>&amp;times;</mo> <mfrac> <mrow> <munder> <mo>&amp;Sigma;</mo> <mi>n</mi> </munder> <msub> <mi>J</mi> <mrow> <mi>k</mi> <mi>n</mi> </mrow> </msub> <mo>-</mo> <munder> <mo>&amp;Sigma;</mo> <mi>j</mi> </munder> <msub> <mi>L</mi> <mrow> <mi>i</mi> <mi>j</mi> </mrow> </msub> <mo>-</mo> <munder> <mo>&amp;Sigma;</mo> <mi>y</mi> </munder> <msub> <mi>G</mi> <mrow> <mi>i</mi> <mi>y</mi> </mrow> </msub> </mrow> <mrow> <munder> <mo>&amp;Sigma;</mo> <mi>n</mi> </munder> <msub> <mi>H</mi> <mrow> <mi>k</mi> <mi>n</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>H</mi> <mi>i</mi> </msub> </mrow> </mfrac> <mo>&amp;times;</mo> <msub> <mi>D</mi> <mi>k</mi> </msub> <mo>&amp;times;</mo> <msub> <mi>P</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> </mrow>
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIn the section k where the circuit Circuit n Real-time Power Flow, LijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyCaused for circuit i failures The load power variable quantity of generator y transfers；HknCircuit n trend conveys limit, H in the section k where the circuitiFor circuit I trend conveying limit, DkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger the transmission of electricity of alarm Circuit mountain fire tripping operation probability；
Circuit is alerted for the mountain fire for being not at section, according to the voltage class size of circuit and the tripping operation probability calculation of circuit mountain fire The power grid risk factor of every circuit, calculation formula are：
In formula, KziFor the power grid risk factor of circuit, PziIt is the circuit in fiery point ZiTrigger the transmission line forest fire tripping operation of alarm Probability；
Step 6, the power grid risk factor K drawn according to step 5zi, calculate each fiery point ZiPower network extent of injury Rzi, when a fire When point only alerts to a railway superstructures, the power network risk factor for alerting circuit is the power network extent of injury value of the fire point；When When the point-to-points bar circuit of one fire forms alarm simultaneously, the danger of the fire point should be more serious, and fire is put to the circuit for triggering alarm Power network degree of danger of the power grid risk factor sum as the fire point；And establish the power network extent of injury set on all fire points R：
<mrow> <msub> <mi>R</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mn>1</mn> </msub> </mrow> </msub> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mn>2</mn> </msub> </mrow> </msub> <mo>+</mo> <mo>...</mo> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mi>j</mi> </msub> </mrow> </msub> <mo>...</mo> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mi>q</mi> </msub> </mrow> </msub> </mrow>
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm transmission line of electricity of initiation Power grid risk factor values, RziFor fiery point ZiThe power network extent of injury；
Step 7, layouted according to existing fire extinguishing equipment, Optimized model is established, when object function is power grid risk and fire fighting and rescue Between product minimize, introduce exponential function and describe the relation of the power grid risk factor and the power network extent of injury, fire fighting and rescue time It is according to fire extinguishing equipment and fire point distance divided by the average translational speed of fire extinguishing equipment, Optimized model：
<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mi>min</mi> </mtd> <mtd> <mrow> <mi>f</mi> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msup> <mi>e</mi> <msub> <mi>R</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> </msup> <mo>&amp;CenterDot;</mo> <msub> <mi>t</mi> <mi>i</mi> </msub> </mrow> </mtd> </mtr> </mtable> </mfenced>
<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <mi>s</mi> <mi>t</mi> <mo>.</mo> </mrow> </mtd> <mtd> <mrow> <msub> <mi>t</mi> <mi>i</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>d</mi> <mi>i</mi> </msub> <mn>80</mn> </mfrac> </mrow> </mtd> </mtr> </mtable> </mfenced>
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diFilled for fire extinguishing The standby fiery point Z of distanceiDistance, average translational speed is 80km/h.
2. more fire point power grid risks according to claim 1 minimize emergence treating method, it is characterised in that in step 2 It is that satellite infrared image is received by satellite data reception device, and earth's surface mountain fire fire point is calculated using fire point identification algorithm Set Z.
3. more fire point power grid risks according to claim 1 minimize emergence treating method, it is characterised in that in step 3, Using neighbouring grid Fast Match Algorithm, the transmission line of electricity set that mountain fire fire point triggers alarm is calculated.
4. more fire point power grid risk according to claim 1 minimizes emergence treating method, it is characterised in that a values are 0.98, b value is 0.02.
5. a kind of more fire point power grid risks minimize emergency disposal system, it is characterised in that including：
Section set computing system, for according to electric network composition and planning operation mode, power network line being divided into some disconnected Face, establish the power network section collection G containing m section；
<mrow> <mi>G</mi> <mo>=</mo> <mfenced open = "[" close = "]"> <mtable> <mtr> <mtd> <msub> <mi>k</mi> <mn>1</mn> </msub> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mn>2</mn> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mi>i</mi> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>k</mi> <mi>m</mi> </msub> </mtd> </mtr> </mtable> </mfenced> <mo>=</mo> <mfenced open = "[" close = "]"> <mtable> <mtr> <mtd> <msub> <mi>l</mi> <mn>11</mn> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mn>12</mn> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>1</mn> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>1</mn> <msub> <mi>n</mi> <mn>1</mn> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mn>21</mn> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mn>22</mn> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>2</mn> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mn>2</mn> <msub> <mi>n</mi> <mn>2</mn> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mn>1</mn> </mrow> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mn>2</mn> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>i</mi> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <msub> <mi>in</mi> <mi>i</mi> </msub> </mrow> </msub> </mtd> </mtr> <mtr> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <mo>...</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mn>1</mn> </mrow> </msub> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mn>2</mn> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <mi>m</mi> <mi>j</mi> </mrow> </msub> </mtd> <mtd> <mo>...</mo> </mtd> <mtd> <msub> <mi>l</mi> <mrow> <msub> <mi>mn</mi> <mi>m</mi> </msub> </mrow> </msub> </mtd> </mtr> </mtable> </mfenced> </mrow>
In formula, kiFor i-th of section, niThe power transmission line travel permit number included for i-th of section, lijJ-th strip for i-th of section is defeated Electric line；
Forest fire system, for obtaining earth's surface mountain fire fire point set Z by satellite infrared view data, identification：
Z=[Z1 Z2 ... Zi ... Zg]
In formula, g is fire point number；
Transmission line of electricity set screening system, for filtering out all mountain fire fire points in the range of power network, determine that mountain fire fire point triggers The transmission line of electricity set S of alarm1：
S1=[lz1 lz2 ... lzi ... lzg]
In formula, lziFor fiery point ZiTrigger the transmission line of electricity set of alarm；
Trip probability calculation system, for according to transmission line forest fire tripping operation probabilistic model computing electric power line set S1In each line The tripping operation probability on road：
P=[Pz1 Pz2 ... Pzi ... Pzp]
In formula, PziFor fiery point ZiTrigger the transmission line forest fire tripping operation probability of alarm；
Wherein, transmission line forest fire tripping operation probabilistic model is in the probability calculation system that trips：
Pi(U)=aPg(U)+b·Pp(U)
In formula, a is that because of the tripping operation of mountain fire history, relatively breakdown number accounts for mountain fire history tripping operation total degree under a certain voltage class Ratio, b are because the alternate breakdown number of mountain fire history tripping operation accounts for the ratio of mountain fire history tripping operation total degree, P under a certain voltage classg (U) it is to occur relatively to puncture the probability for causing transmission line of electricity to trip, P under a certain voltage classp(U) it is under a certain voltage class The probability that alternate breakdown causes transmission line of electricity to trip occurs；
Power grid risk factor computing system, for calculating the power grid risk factor of each circuit；
Transmission line of electricity is alerted for the mountain fire of section, is specifically included：
Alignment system, for the power network section collection G of the m section in section aggregation system, to transmission line of electricity set S1In it is each Section where circuit is positioned；
Section significance level computing system, for calculating the significance level of section, calculation formula is：
<mrow> <msub> <mi>D</mi> <mi>k</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>Q</mi> <mi>k</mi> </msub> <mrow> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>m</mi> </munderover> <msub> <mi>Q</mi> <mi>j</mi> </msub> </mrow> </mfrac> </mrow>
In formula, m is section number, DkFor section k significance level, QkFor section k real-time conveying trend sum；
Single line power grid risk factor computing system, for according to transmission line of electricity set S1In section residing for each circuit, calculate The power grid risk factor K of every circuitzi, calculation formula is：
<mrow> <msub> <mi>K</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mo>|</mo> <mfrac> <msub> <mi>I</mi> <mi>i</mi> </msub> <msub> <mi>I</mi> <mrow> <mi>i</mi> <mi>m</mi> <mi>a</mi> <mi>x</mi> </mrow> </msub> </mfrac> <mo>|</mo> <mo>&amp;times;</mo> <mfrac> <mrow> <munder> <mo>&amp;Sigma;</mo> <mi>n</mi> </munder> <msub> <mi>J</mi> <mrow> <mi>k</mi> <mi>n</mi> </mrow> </msub> <mo>-</mo> <munder> <mo>&amp;Sigma;</mo> <mi>j</mi> </munder> <msub> <mi>L</mi> <mrow> <mi>i</mi> <mi>j</mi> </mrow> </msub> <mo>-</mo> <munder> <mo>&amp;Sigma;</mo> <mi>y</mi> </munder> <msub> <mi>G</mi> <mrow> <mi>i</mi> <mi>y</mi> </mrow> </msub> </mrow> <mrow> <munder> <mo>&amp;Sigma;</mo> <mi>n</mi> </munder> <msub> <mi>H</mi> <mrow> <mi>k</mi> <mi>n</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>H</mi> <mi>i</mi> </msub> </mrow> </mfrac> <mo>&amp;times;</mo> <msub> <mi>D</mi> <mi>k</mi> </msub> <mo>&amp;times;</mo> <msub> <mi>P</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> </mrow>
In formula, IiFor circuit i actual current, IimaxFor circuit i maximum allowed current value, JknIn the section k where the circuit Circuit n Real-time Power Flow, LijThe load power variable quantity of circuit j transmission, G are caused for circuit i failuresiyCaused for circuit i failures The load power variable quantity of generator y transfers；HknCircuit n trend conveys limit, H in the section k where the circuitiFor circuit I trend conveying limit, DkThe section k significance levels where the circuit, PziIt is the circuit in fiery point ZiTrigger the transmission of electricity of alarm Circuit mountain fire tripping operation probability；
Circuit is alerted for the mountain fire for being not at section, for the voltage class size according to circuit and circuit mountain fire tripping operation probability The power grid risk factor of every circuit is calculated, calculation formula is：
In formula, KziFor the power grid risk factor of circuit, PziIt is the circuit in fiery point ZiTrigger the transmission line forest fire tripping operation of alarm Probability；
Power network extent of injury set computing system, for the power grid risk factor K being calculated according to the power grid risk factorzi, meter Calculate each fiery point ZiPower network extent of injury Rzi, when a fire point only alerts to a railway superstructures, alert the power network danger of circuit The dangerous factor is the power network extent of injury value of the fire point；When the point-to-points bar circuit of a fire forms alarm simultaneously, the fire point Danger should be more serious, and fire is put to power network degree of danger of the circuit power network risks and assumptions sum as the fire point of initiation alarm； And establish the power network extent of injury set R on all fire points：
<mrow> <msub> <mi>R</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mn>1</mn> </msub> </mrow> </msub> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mn>2</mn> </msub> </mrow> </msub> <mo>+</mo> <mo>...</mo> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mi>j</mi> </msub> </mrow> </msub> <mo>...</mo> <mo>+</mo> <msub> <mi>K</mi> <mrow> <msub> <mi>zi</mi> <mi>q</mi> </msub> </mrow> </msub> </mrow>
R=[Rz1 Rz2 ... Rzi ... Rzq]
In formula, q is fiery point ZiThe number of, lines of the alarm transmission of electricity of initiation,For fiery point ZiThe j bars alarm transmission line of electricity of initiation Power grid risk factor values, RziFor fiery point ZiThe power network extent of injury；
Optimization system, for being layouted according to existing fire extinguishing equipment, Optimized model is established, object function is power grid risk and fire extinguishing The product of rescue time is minimized, and introduces the relation that exponential function describes the power grid risk factor and the power network extent of injury, and fire extinguishing is rescued The time is helped according to fire extinguishing equipment and fire point distance divided by the average translational speed of fire extinguishing equipment, Optimized model is：
<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mi>min</mi> </mtd> <mtd> <mrow> <mi>f</mi> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msup> <mi>e</mi> <msub> <mi>R</mi> <mrow> <mi>z</mi> <mi>i</mi> </mrow> </msub> </msup> <mo>&amp;CenterDot;</mo> <msub> <mi>t</mi> <mi>i</mi> </msub> </mrow> </mtd> </mtr> </mtable> </mfenced>
<mfenced open = "" close = ""> <mtable> <mtr> <mtd> <mrow> <mi>s</mi> <mi>t</mi> <mo>.</mo> </mrow> </mtd> <mtd> <mrow> <msub> <mi>t</mi> <mi>i</mi> </msub> <mo>=</mo> <mfrac> <msub> <mi>d</mi> <mi>i</mi> </msub> <mn>80</mn> </mfrac> </mrow> </mtd> </mtr> </mtable> </mfenced>
In formula, RziFor fiery point ZiThe power network extent of injury, tiIt is provided to for fire extinguishing up to fiery point ZiRequired time, diFilled for fire extinguishing The standby fiery point Z of distanceiDistance, average translational speed is 80km/h.
6. more fire point power grid risks according to claim 5 minimize emergency disposal system, it is characterised in that forest fire System is to receive satellite infrared image by satellite data reception device, and earth's surface mountain fire is calculated using fire point identification algorithm Fiery point set Z.
7. more fire point power grid risks according to claim 5 minimize emergency disposal system, it is characterised in that transmission line of electricity Gather screening system and use neighbouring grid Fast Match Algorithm, the transmission line of electricity set that mountain fire fire point triggers alarm is calculated.
8. more fire point power grid risk according to claim 5 minimizes emergency disposal system, it is characterised in that a values are 0.98, b value is 0.02.
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