CN111289690A - AIS-based regional ship carbon emission monitoring method - Google Patents
AIS-based regional ship carbon emission monitoring method Download PDFInfo
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Abstract
The invention discloses an AIS-based regional ship carbon emission monitoring method, which is used for monitoring the ship carbon emission in a region and comprises the following steps: investigating regional traffic flow, AIS allocation conditions and carbon emission data, and determining registration information of the ship; receiving AIS signals of ships in the area to obtain real ship data, and establishing an area ship carbon emission evaluation model; obtaining regional carbon emission evaluation data according to the real ship data, the registration information and the regional ship carbon emission evaluation model; the registration information comprises ship file information and fuel supply list information, and the real ship data comprises ship speed, ship displacement, ship range, ship berthing time and ship measured carbon emission. By establishing the regional ship carbon emission evaluation model, the regional ship carbon emission evaluation model is used for evaluating and monitoring the regional ship carbon emission, so that the accuracy and comparability of regional ship carbon emission monitoring and evaluation are improved.
Description
Technical Field
The invention relates to the technical field of ship carbon emission, in particular to a regional ship carbon emission monitoring method.
Background
With the rapid development of the marine industry, the number of ships is greatly increased, the carbon emission of the ships is taken as one of the sources of greenhouse gases, the influence on the global environment is huge, the control of the carbon emission of the ships by various countries is more and more strict, and most of the evaluation methods for the carbon emission of the ships at present are as follows:
the fuel supply list (BDN) tracking and the regular inventory of fuel tanks, according to the requirement of the international anti-pollution convention (MARPOL), 400 total tons and more of ships must keep the BDN of each refueling, keep the ships for 3 years and take effect from 2010 to 7 months. In addition, the supplied fuel samples must be stored on board for 12 months or until the batch of fuel is exhausted, and taken out at night. The method hardly increases the cost of any monitoring equipment, but has poor precision and limited application range, is not suitable for ships using cargo as fuel or ships which cannot be acquired by BDN, and must be combined with a fuel tank liquid level monitoring method.
And (3) monitoring the liquid level of the fuel tank, reading the liquid level height of the fuel tank through a depth measuring device, converting the liquid level height into the volume of the fuel through a depth measuring meter, and converting the volume of the fuel into the weight of the fuel according to the density of the fuel (which can be obtained through BDN). The liquid level monitoring method comprises 3 types of electric sounding, mechanical sounding and manual sounding, and the corresponding monitoring equipment comprises an oil dip rod, an oil tank scale, a liquid level detecting tube and the like. The method is simple and easy, has relatively low cost, can be monitored in a manual or electronic mode, but has unstable accuracy which changes along with the changes of ship structures and software. The monitoring frequency is generally 1 day and 2 times, and the monitoring frequency is high-frequency, and 15 minutes and 1 time are required when fuel is added.
The calculated ship fuel consumption is larger than the actual consumption by aiming at the flow meter monitoring of the fuel combustion process. The fuel combustion process in the fuel equipment is monitored by using the flowmeter, the calculation result is closer to the fuel actually consumed by the ship, higher accuracy can be achieved, the carbon emission of the ship inside and outside the European Union area can be easily distinguished, the carbon emission report can be conveniently compiled, and the cost of the monitoring equipment is higher.
Direct carbon emission measurement uses exhaust gas flow meters, and direct measurement of ship carbon emission through chimneys and the like, and is high in accuracy, but high in cost, and needs training and explanation for crews who install ships.
The carbon emission change of ships is mostly regional change, most of the existing ship carbon emission monitoring methods are single-ship carbon emission monitoring, then the carbon emission evaluation in port areas is obtained through self-summarizing processing of all the areas, and the regional carbon emission monitoring evaluation is not accurate and has no good comparability due to differences of data summarization methods and calculation nodes used when the port areas carry out integrated analysis on the carbon emission of ships in the areas.
For example, chinese patent publication No. CN105115554A, published as 2015, 12 and 02, entitled "ship carbon emission monitoring method", discloses a ship carbon emission monitoring method, including: the control center processor calculates the oil consumption of the host machine by adopting a navy coefficient method; the processor calculates the oil consumption of the auxiliary engine and the boiler according to the oil consumption rates of the auxiliary engine and the boiler and the unit operation time; the processor adds the oil consumption of the main engine, the oil consumption of the auxiliary engine and the oil consumption of the boiler in unit operation time to obtain the oil consumption of the ship in unit operation time; the processor calculates the total oil consumption of the whole voyage according to the oil consumption of the ship in unit running time; and the processor calculates the carbon emission of the whole voyage according to the total oil consumption. The invention indirectly monitors the oil consumption of the ship, thereby realizing the monitoring of the carbon emission of the ship, but the detection of the carbon emission of the ship in the patent is positioned on the single ship layer surface, the regional monitoring of the carbon emission of the ship cannot be carried out, and the carbon emission of the ship in the region can be obtained only after the port area is required to analyze the carbon emission integration of the ship in the region, so that the regional carbon emission monitoring and evaluation is inaccurate, and different regions have poor comparability due to the difference in analysis.
Disclosure of Invention
The invention aims to overcome the defects that the monitoring method in the prior art is mainly used for monitoring carbon emission of a single ship and monitoring and evaluation of regional ship carbon emission need port area self-integration, and provides a regional ship carbon emission monitoring method.
The second invention aims to overcome the problem of inaccurate carbon emission monitoring in the prior art, and provides a regional ship carbon emission monitoring method, which enables a regional ship carbon emission evaluation model to be more accurate through optimization of modeling
In order to realize the first invention, the invention adopts the following technical scheme:
an AIS-based regional ship carbon emission monitoring method is used for monitoring ship carbon emission in a region and comprises the following steps:
investigating regional traffic flow, AIS allocation conditions and carbon emission data, and determining registration information of the ship;
receiving AIS signals of ships in the area to obtain real ship data, and establishing an area ship carbon emission evaluation model;
obtaining regional carbon emission evaluation data according to the real ship data, the registration information and the regional ship carbon emission evaluation model; wherein the registration information comprises ship file information and fuel supply list information, and the real ship data comprises ship speed, ship displacement, ship voyage, ship berthing time and ship measured carbon emission.
According to the scheme, regional traffic flow, AIS allocation conditions and carbon emission data are collected through investigation, registration information of ships is determined, real ship data of the ships are obtained through an AIS system associated with the ships, a regional ship carbon emission evaluation model is established by combining the registration information, the regional ship carbon emission evaluation model is used for evaluating and monitoring ship carbon emission in a region, and accuracy and comparability of regional ship carbon emission monitoring and evaluation are improved.
In order to achieve the second object of the present invention, the present invention adopts the following technical solutions:
the method for establishing the regional ship carbon emission evaluation model comprises the following steps:
the method comprises the following steps: receiving AIS signals of ships in the area, and acquiring real ship data;
step two: calling registration information of the ship and combining real ship data to analyze ship carbon emission influence factors;
step three: establishing a single-ship carbon emission calculation model;
step four: substituting relevant data in the real ship data into the single ship carbon emission calculation model, carrying out model numerical simulation, comparing a simulation result with ship actual carbon emission data in the real ship data, and entering a fifth step if a difference value between the simulation result and the ship actual carbon emission exceeds a preset value, or entering a sixth step if the difference value does not exceed the preset value;
step five: optimizing the single-ship carbon emission calculation model by adopting a multivariate regression analysis method, and returning to the step three;
step six: determining a single-ship carbon emission calculation model;
step seven: summing a plurality of single-ship carbon emission calculation models, and establishing a multi-ship carbon emission statistical model;
step eight: and judging the number of ships in the area according to the ship positions and the area boundary positions, and establishing an area ship carbon emission evaluation model.
According to the method, after the single-ship carbon emission calculation model is established, the real ship data are used for carrying out numerical simulation, the numerical simulation is compared with the real ship carbon emission data, the single-ship carbon emission calculation model is optimized, the single-ship carbon emission calculation model is more accurate, and therefore the regional ship carbon emission evaluation model established according to the single-ship carbon emission calculation model is more accurate.
Preferably, the formula for the mathematical model of the single ship comprises
Wherein C is the carbon dioxide emission amount in unit time on the ship, Q is the fuel oil amount consumed by the ship in unit time, p represents the carbon content coefficient of the fuel, r represents the carbon oxidation rate, and FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpIndicating the berthing time of the ship, D indicating the sailing mileage of the ship, delta indicating the cargo capacity of the ship, and v indicating the voyage of the shipAnd (4) speed.
The above formulas are combined
And
the single-ship carbon emission calculation model is obtained by combining the formula with the ship carbon emission influence factor, and the single-ship model established by the single-ship carbon emission calculation model is more accurate in monitoring the carbon emission of the ship.
Preferably, the ship carbon emission influence factors comprise a navigational speed factor, a displacement factor, a range factor and a berthing time factor;
the analysis formula of the navigational speed factor is as follows:
the analysis formula of the water discharge factor is as follows:
the voyage factor and the berthing time factor are analyzed according to the following formula:
wherein p represents the coefficient of carbon content of the fuel, r represents the rate of carbon oxidation, FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpThe ship berthing time is represented, D represents the ship sailing mileage, delta represents the ship loading capacity, and v represents the ship speed.
According to the formula used by the single-ship mathematical model, the factors such as the speed, the displacement, the range and the berthing time of the influence factors of the carbon emission of the ship can be changed along with the time, the change range is large, the influence factors are important influence factors of the carbon emission, and the carbon emission of the ship is analyzed through the speed factor, the displacement factor, the range factor and the berthing time factor, so that the monitoring and the evaluation of the regional carbon emission of the ship are more accurate.
The method has the advantages that the carbon emission model of the regional ship is established, so that the accuracy and comparability of monitoring the carbon emission of the regional ship are greatly improved, the single-ship carbon emission calculation model is optimized, the single-ship carbon emission calculation model is more accurate, and the regional ship carbon emission evaluation model established according to the single-ship carbon emission calculation model is more accurate.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
The specific embodiment is as follows: a regional ship carbon emission monitoring method based on AIS is used for monitoring ship carbon emission in a region and is characterized by comprising the following steps:
investigating regional traffic flow, AIS allocation conditions and carbon emission data, and determining registration information of the ship;
receiving AIS signals of ships in the area to obtain real ship data, and establishing an area ship carbon emission evaluation model;
obtaining regional carbon emission evaluation data according to the real ship data, the registration information and the regional ship carbon emission evaluation model; wherein the registration information comprises ship file information and fuel supply list information, and the real ship data comprises ship speed, ship displacement, ship voyage, ship berthing time and ship measured carbon emission.
The method for establishing the regional ship carbon emission evaluation model comprises the following steps:
the method comprises the following steps: receiving AIS signals of ships in the area, and acquiring real ship data;
step two: calling registration information of the ship and combining real ship data to analyze ship carbon emission influence factors;
step three: establishing a single-ship carbon emission calculation model;
step four: substituting relevant data in the real ship data into the single ship carbon emission calculation model, carrying out model numerical simulation, comparing a simulation result with ship actual carbon emission data in the real ship data, and entering a fifth step if a difference value between the simulation result and the ship actual carbon emission exceeds a preset value, or entering a sixth step if the difference value does not exceed the preset value;
step five: optimizing the single-ship carbon emission calculation model by adopting a multivariate regression analysis method, and returning to the step three;
step six: determining a single-ship carbon emission calculation model;
step seven: summing a plurality of single-ship carbon emission calculation models, and establishing a multi-ship carbon emission statistical model;
step eight: and judging the number of ships in the area according to the ship positions and the area boundary positions, and establishing an area ship carbon emission evaluation model.
The ship carbon emission influence factors comprise a navigational speed factor, a displacement factor, a range factor and a berthing time factor;
the analytical formula of the navigational speed factor is as follows:
the analytical formula of the water discharge factor is as follows:
the voyage factor and the berthing time factor are analyzed according to the following formula:
wherein p represents a fuel carbon content coefficient,r represents the carbon oxidation rate, FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpThe ship berthing time is represented, D represents the ship sailing mileage, delta represents the ship loading capacity, and v represents the ship speed.
The formula used by the mathematical model of the single ship comprises
Wherein C is the carbon dioxide emission amount in unit time on the ship, Q is the fuel oil amount consumed by the ship in unit time, p represents the carbon content coefficient of the fuel, r represents the carbon oxidation rate, and FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpThe ship berthing time is represented, D represents the ship sailing mileage, delta represents the ship loading capacity, and v represents the ship speed.
Through the formula and the analysis of the ship carbon emission influence factor, the specific ship multi-voyage carbon emission calculation model is obtained as follows:
wherein i is the number of the voyage number of the ship, and j is the fuel type corresponding to the specific voyage number of the ship.
According to the single-ship carbon emission calculation model, a multi-ship carbon emission calculation model is obtained as follows:
and k is a ship serial number, and the carbon emission amount of a plurality of ships in a certain period can be accurately counted by the multi-ship carbon emission calculation model.
The regional carbon emission model is obtained by combining a multi-ship carbon emission calculation model with ship positions and regional boundaries, comparing the ship position information with port boundary position information through a navigation positioning system on the ship, such as a Beidou positioning system, screening ships in the region according to the relation between the ship position and the regional boundaries, and calculating the carbon emission of a single ship. Finally, the carbon emission of ships in the region can be summed, and the total carbon emission condition in the region can be obtained.
In the embodiment, regional traffic flow, AIS allocation conditions and carbon emission data are collected through investigation, registration information of ships is determined, real ship data of the ships are obtained through an AIS system associated with the ships, a regional ship carbon emission evaluation model is established by combining the registration information, the regional ship carbon emission evaluation model is used for evaluating and monitoring the regional ship carbon emission, and the accuracy and comparability of regional ship carbon emission monitoring and evaluation are improved; according to a formula used by a single ship mathematical model, the influence factors of ship carbon emission, such as the speed, the displacement, the voyage and the berthing time, can change along with time, the change range is large, the influence factors are important influence factors of the carbon emission, and the ship carbon emission is analyzed through the speed factor, the displacement factor, the voyage factor and the berthing time factor, so that the regional ship carbon emission monitoring and evaluation are more accurate; after the single-ship carbon emission calculation model is established, the real ship data are used for carrying out numerical simulation, the numerical simulation is compared with the real ship actual measurement carbon emission data, the single-ship carbon emission calculation model is optimized, the single-ship carbon emission calculation model is more accurate, the regional ship carbon emission evaluation model established according to the single-ship carbon emission calculation model is more accurate, and combination of the regional ship carbon emission evaluation model and the real ship actual measurement carbon emission calculation model
And
considering the ship sailing state and the host state to calculate the carbon emission of a single ship and obtain the estimated carbon emission of the ship in a single voyage, and combining the formula with the shipThe carbon emission influence factors obtain a single-ship carbon emission calculation model, and the single-ship model established by the single-ship carbon emission calculation model can monitor the carbon emission of the ship more accurately, so that the regional ship carbon emission evaluation model established according to the single-ship carbon emission calculation model is more accurate.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (4)
1. A regional ship carbon emission monitoring method based on AIS is used for monitoring ship carbon emission in a region, and is characterized by comprising the following steps:
investigating regional traffic flow, AIS allocation conditions and carbon emission data, and determining registration information of the ship;
receiving AIS signals of ships in the area to obtain real ship data, and establishing an area ship carbon emission evaluation model;
obtaining regional carbon emission evaluation data according to the real ship data, the registration information and the regional ship carbon emission evaluation model;
the registration information comprises ship file information and fuel supply list information, and the real ship data comprises ship speed, ship displacement, ship range, ship berthing time and ship measured carbon emission.
2. The AIS-based regional ship carbon emission monitoring method according to claim 1, wherein the regional ship carbon emission assessment model is established by the following method:
the method comprises the following steps: receiving AIS signals of ships in the area, and acquiring real ship data;
step two: calling registration information of the ship and combining real ship data to analyze ship carbon emission influence factors;
step three: establishing a single-ship carbon emission calculation model;
step four: substituting relevant data in the real ship data into the single ship carbon emission calculation model, performing model numerical simulation, comparing a simulation result with ship actual carbon emission data in the real ship data, and entering a fifth step if a difference value between the simulation result and the ship actual carbon emission exceeds a preset value, or entering a sixth step if the difference value does not exceed the preset value;
step five: optimizing the single-ship carbon emission calculation model by adopting a multivariate regression analysis method, and returning to the step three;
step six: determining a single-ship carbon emission calculation model;
step seven: summing a plurality of single-ship carbon emission calculation models, and establishing a multi-ship carbon emission statistical model;
step eight: and judging the number of ships in the area according to the ship positions and the area boundary positions, and establishing an area ship carbon emission evaluation model.
3. The AIS-based regional ship carbon emission monitoring method of claim 2, wherein the formula for the mathematical model of the individual ship comprises
Wherein C is the carbon dioxide emission amount in unit time on the ship, Q is the fuel oil amount consumed by the ship in unit time, p represents the carbon content coefficient of the fuel, r represents the carbon oxidation rate, and FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpRepresenting the mooring time of the ship, D representing the sailing mileage of the ship, delta representing the cargo capacity of the ship, and v representing the speed of the ship.
4. The AIS-based regional vessel carbon emission monitoring method of claim 2 wherein the vessel carbon emission impact factors include a cruise factor, a displacement factor, a range factor, and a berthing time factor;
the analysis formula of the navigational speed factor is
The analytical formula of the water discharge factor is
The voyage factor and the berthing time factor are analyzed by the formula
Wherein p represents the coefficient of carbon content of the fuel, r represents the rate of carbon oxidation, FAIndicating fuel consumption of the auxiliary unit, FBTime consumption of fuel oil for boiler, k1And k2Is constant and is determined by the model of the marine main engine, tpRepresenting the mooring time of the ship, D representing the sailing mileage of the ship, delta representing the cargo capacity of the ship, and v representing the speed of the ship.
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Application publication date: 20200616 |