CN115796504B - Ship real-time energy efficiency evaluation method and system based on carbon intensity - Google Patents
Ship real-time energy efficiency evaluation method and system based on carbon intensity Download PDFInfo
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Abstract
The invention provides a ship real-time energy efficiency evaluation method and system based on carbon intensity.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a ship real-time energy efficiency evaluation method and system based on carbon intensity.
Background
As an important tool for waterway transportation, how to evaluate the energy efficiency of ships in operation is a serious concern for shipmen, and how to set reasonable energy efficiency evaluation criteria is related. The international maritime organization promotes relevant regulations based on the operational carbon intensity CII, aims to evaluate the energy efficiency condition of the ship, and the ship which cannot meet the requirement of the carbon intensity regulations can face punishment measures. However, the operational carbon intensity CII is an annual energy efficiency evaluation index, is directly related to the operational mode and condition of the ship besides the performance of the ship, and can be directly applied to the real-time energy efficiency evaluation of the ship, if the operational carbon intensity CII is directly applied to the real-time energy efficiency evaluation of the ship, certain load conditions and the indexes under the navigational speed are always good, and under certain conditions, the operational carbon intensity CII is always bad, loses the evaluation significance, and cannot reasonably reflect the influence of the current ship energy efficiency condition on the annual carbon intensity index, so that the operational carbon intensity CII cannot be directly applied to the real-time energy efficiency evaluation of the ship in operation.
The existing ship real-time energy efficiency index evaluation scheme is used for evaluating the relative energy efficiency of the ship, the formulated evaluation standard is used for referring to the historical data of the ship, the data of sister ships and the data of other ships at the same level, the real-time energy efficiency condition of the ship is evaluated by manually demarcating the range through relative comparison, but whether the absolute value of the ship real-time energy efficiency index reaches a certain absolute value or not is not, so that the final annual index can meet the evaluation required by regulations, and the energy efficiency evaluation reference based on the energy efficiency compliance premise can not be provided for the ship in operation.
Disclosure of Invention
In order to solve the problems that the technology cannot provide energy efficiency evaluation references based on the premise of energy efficiency compliance for ships in operation and the like for evaluating the relative energy efficiency of the ships, the invention provides a ship real-time energy efficiency evaluation method based on carbon intensity. The invention further relates to a ship real-time energy efficiency evaluation system based on the carbon intensity.
The technical scheme of the invention is as follows:
The ship real-time energy efficiency evaluation method based on the carbon intensity is characterized by comprising the following steps of:
a data acquisition and processing step, namely, utilizing a ship draught pressure sensor, a whole-ship fuel flow meter and a ship positioning component to acquire the average ship draught, the average ship oil consumption and the average ship ground speed;
A ship state judging step, namely judging the ship navigation state and the loading condition according to the average ground speed and the average draft of the ship, wherein when the average ground speed of the ship is greater than a preset navigation speed threshold, the ship is in a navigation state, and otherwise, the ship is in a berthing or maneuvering state; the ship loading condition is full load when the average ship draft is greater than the full load draft threshold, the ship loading condition is ballasted when the average ship draft is less than the ballasted draft threshold, and the ship average draft is other loading conditions when the average ship draft is between the ballasted draft threshold and the full load draft threshold;
Calculating and acquiring a real-time energy efficiency index, namely calculating and acquiring each boundary of the ship average oil consumption evaluation grade under the corresponding load condition based on the ship annual carbon intensity grade boundary, the ship average ground speed and the ship load condition by taking the acquired ship average oil consumption as a real-time energy efficiency evaluation index;
and a real-time energy efficiency evaluation and classification step, namely comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and classifying the average oil consumption of the ship so as to evaluate the real-time energy efficiency condition of the ship.
Preferably, in the step of calculating and obtaining the real-time energy efficiency index, real-time energy efficiency evaluation associated parameters are also obtained, wherein the real-time energy efficiency evaluation associated parameters comprise ship load, carbon coefficient of fuel type used by the ship, the ratio of ship annual ballast to full-load sailing time, the number of estimated ship annual berthing days, and the ratio of ship ballasting to full-load oil consumption under different sailing speeds; the ratio of the annual ballasting time to the full-load sailing time of the ship and the expected berthing days of the ship year are obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, and the ratio of the ballasting time to the full-load oil consumption of the ship at different sailing speeds is obtained through pilot voyage data or through historical data fitting analysis;
And calculating and obtaining each boundary of the ship average oil consumption evaluation classification under the corresponding load condition based on the ship annual carbon intensity level boundary, the ship average ground speed, the real-time energy efficiency evaluation related parameters and the ship load condition.
Preferably, in the data acquisition and processing step, the acquired data is preprocessed firstly, missing data is removed, then the data is subjected to averaging processing, hour averaged data is obtained, the draft data obtained by the ship draft pressure sensor and the ship ground speed data obtained by the ship positioning component are directly and statistically averaged in hours, the ship average draft and the ship average ground speed are obtained, and the ship average oil consumption is obtained by subtracting the head-tail breakpoint values from the whole ship fuel flow meter data obtained by the whole ship fuel flow meter.
Preferably, in the ship state determining step, the speed threshold is 5 knots, the full-load draft threshold is 90% of the ship design draft set value, and the ballast draft threshold is 110% of the ship ballast draft set value.
Preferably, the real-time energy efficiency index calculation and acquisition step calculates each dividing line of the ship average fuel consumption evaluation grade under the corresponding load condition, including a grade A dividing line, a grade B dividing line, a grade C dividing line and a grade D dividing line;
In the real-time energy efficiency evaluation and classification step, the real-time energy efficiency of the ship when the average oil consumption of the ship is smaller than the class A boundary under the corresponding load condition is class A, the real-time energy efficiency of the ship when the average oil consumption of the ship is larger than or equal to the class A boundary under the corresponding load condition and smaller than the class B boundary is class B, the real-time energy efficiency of the ship when the average oil consumption of the ship is larger than or equal to the class B boundary under the corresponding load condition and smaller than the class C boundary is class C, the real-time energy efficiency of the ship when the average oil consumption of the ship is larger than or equal to the class C boundary under the corresponding load condition and smaller than the class D boundary is class D, and the real-time energy efficiency of the ship when the average oil consumption of the ship is larger than or equal to the class D under the corresponding load condition is class E.
A ship real-time energy efficiency evaluation system based on carbon intensity is characterized by comprising a data acquisition processing module, a ship state judging module, a real-time energy efficiency index calculation acquisition module and a real-time energy efficiency evaluation grading module which are connected in sequence,
The data acquisition processing module is used for acquiring and processing data by using a ship draught pressure sensor, a whole-ship fuel flow meter and a ship positioning component to acquire the average ship draught, the average ship oil consumption and the average ship ground speed;
The ship state judging module judges the ship navigation state and the loading condition according to the average ground speed and the average draft of the ship, when the average ground speed of the ship is greater than a preset navigation speed threshold, the ship is in a navigation state, and otherwise, the ship is in a berthing or maneuvering state; when the average draft of the ship is greater than the full load draft threshold, the ship loading condition is full load, when the average draft of the ship is less than the ballast draft threshold, the ship loading condition is ballast, and when the average draft of the ship is between the ballast draft threshold and the full load draft threshold, the ship loading condition is other loading conditions;
The real-time energy efficiency index calculation acquisition module is used for calculating and acquiring ship average oil consumption under corresponding load conditions based on a ship annual carbon intensity level dividing line, a ship average ground speed and a ship load condition by taking the acquired ship average oil consumption as a real-time energy efficiency evaluation index;
And the real-time energy efficiency evaluation and classification module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and classifying the average oil consumption of the ship so as to evaluate the real-time energy efficiency condition of the ship.
Preferably, the real-time energy efficiency index calculation and acquisition module further acquires real-time energy efficiency evaluation related parameters, wherein the real-time energy efficiency evaluation related parameters comprise ship load, carbon coefficient of fuel type used by the ship, the ratio of ship annual ballast to full-load sailing time, the number of estimated ship annual berthing days, and the ratio of ship ballasting to full-load oil consumption under different sailing speeds; the ratio of the annual ballasting time to the full-load sailing time of the ship and the expected berthing days of the ship year are obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, and the ratio of the ballasting time to the full-load oil consumption of the ship under different sailing speeds is obtained through pilot sailing data or through historical data fitting analysis; and calculating and obtaining each boundary of the ship average oil consumption evaluation classification under the corresponding load condition based on the ship annual carbon intensity level boundary, the ship average ground speed, the real-time energy efficiency evaluation related parameters and the ship load condition.
Preferably, the data acquisition processing module pre-processes acquired data, eliminates missing data, then averages the data to obtain hour averaged data, and the draught data obtained by the ship draught pressure sensor and the ship ground speed data obtained by the ship positioning component are directly and statistically averaged in hours to obtain the ship average draught and the ship average ground speed, and the ship average oil consumption is obtained by subtracting the head-tail breakpoint values from the whole ship fuel flow meter data obtained by the whole ship fuel flow meter.
Preferably, the voyage threshold is 5 knots, the full-load draft threshold is 90% of the ship design draft set point, and the ballast draft threshold is 110% of the ship ballast draft set point.
Preferably, the real-time energy efficiency index calculation and acquisition module calculates each dividing line of the ship average fuel consumption evaluation grade under the corresponding load condition, wherein each dividing line comprises a grade A dividing line, a grade B dividing line, a grade C dividing line and a grade D dividing line; and the real-time energy efficiency evaluation and classification module compares the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, performs A-E classification on the average oil consumption of the ship, and evaluates the real-time energy efficiency condition of the ship as a qualified target when the C level is reached.
The beneficial effects of the invention are as follows:
According to the ship real-time energy efficiency assessment method based on the carbon intensity, ship annual carbon intensity compliance is taken as a premise, ship real-time energy efficiency assessment indexes are formulated, ship real-time energy consumption related data are collected, the obtained ship average oil consumption is taken as the real-time energy efficiency assessment indexes, and ship average oil consumption assessment grading boundaries under corresponding loading conditions are calculated, so that the ship real-time energy efficiency under different loading conditions and navigation speeds can be assessed and graded, the ship energy efficiency compliance condition can be assessed in real time, the problem that the current relative energy efficiency assessment of the ship cannot provide energy efficiency assessment references based on the energy efficiency compliance premise for the ship in operation is solved, and targeted references and guidance are provided for ship annual operation carbon intensity compliance.
The invention also relates to a ship real-time energy efficiency evaluation system based on the carbon intensity, which corresponds to the ship real-time energy efficiency evaluation method based on the carbon intensity, and can be understood as a system for realizing the ship real-time energy efficiency evaluation method based on the carbon intensity.
Drawings
FIG. 1 is a flow chart of the carbon strength based method for real-time energy efficiency assessment of a vessel of the present invention.
FIG. 2 is a schematic diagram of a method for estimating the real-time energy efficiency of a ship based on carbon intensity according to the present invention.
FIG. 3 is a block diagram of the carbon strength based real-time energy efficiency assessment system of the vessel of the present invention.
Detailed Description
The present invention will be described below with reference to the accompanying drawings.
The invention relates to a ship real-time energy efficiency evaluation method based on carbon intensity, which is shown in a flow chart of fig. 1 and comprises the following steps:
1. And a data acquisition and processing step, wherein a ship draught pressure sensor, a whole-ship fuel flow meter and a ship positioning component are utilized to acquire and process data, and the average ship draught, the average ship oil consumption and the average ship ground speed are acquired. As shown in the schematic diagram of fig. 2, namely, a ship eating water pressure sensor, a whole ship fuel flow meter and a ship GPS signal are collected, and the collection frequency is recommended to be 1Hz; preprocessing the original data, and eliminating missing data; and then averaging the data to obtain hour averaged data, wherein the draft data obtained by the pressure sensor (the draft data refers to bow-stern average draft data), the GPS obtains direct hour statistical average of ship ground speed data, so as to obtain ship average draft (average draft for short or hour average draft, or average bow-stern average draft data and time statistical average) T m and ship average ground speed (average ground speed for short hereinafter) V g, and the whole ship fuel flow meter signal is subtracted by a head-tail breakpoint value to obtain ship average fuel consumption (i.e. fuel consumption per hour) FC.
2. And a ship state judging step, namely judging the ship sailing state and the carrying condition according to the average ground speed V g and the average ship draft T m, wherein when the average ground speed of the ship is larger than a preset sailing speed threshold value, the ship is in a sailing state (or a normal sailing state), otherwise, the ship is in a berthing or maneuvering state, when the average ship draft is larger than a full-load draft threshold value, the carrying condition of the ship is full load, when the average ship draft is smaller than a ballast draft threshold value, the carrying condition of the ship is ballast, and the carrying condition of the ship is the carrying condition of other carrying conditions (namely, when the average ship draft is between the ballast draft threshold value and the full-load draft threshold value, the carrying condition of the ship is the carrying condition of other carrying conditions).
The real-time energy efficiency evaluation of the ship only aims at the ship navigation, so that the navigation/berthing state of the ship is firstly judged, and the evaluation standard is as follows: the ground speed V g is more than 5kn (kn is a section, namely the speed threshold is 5 sections), and the ground speed V g is in a normal sailing state, otherwise, the ground speed V g is in a berthing or maneuvering state; carrying out condition judgment on the navigation state data, wherein the evaluation standard is as follows: the average draft of the ship T m>0.9*Td is full load, T m<1.1*Tb is ballast, 1.1×t b≤Tm≤0.9*Td is other load conditions, wherein T d is an initial design stage setting parameter, namely a ship design draft set point (corresponding to the average draft of the bow and stern), the full load draft threshold is 0.9×t d,Tb is an initial design stage setting parameter, namely a ballast draft set point (corresponding to the average draft of the bow and stern), and the ballast draft threshold is 1.1×t b. It should be noted that, the foregoing draft thresholds are preferred values of the embodiments, and are not limited to the preferred values, and may be set to other values, for example, a full draft threshold of 0.8×t d、0.92*Td, and the like, and a ballast draft threshold of 1.2×t b、1.15*Tb、1.18*Tb, and the like.
3. And a real-time energy efficiency index calculation and acquisition step, wherein the acquired ship average oil consumption FC is used as a real-time energy efficiency evaluation index, and each boundary of ship average oil consumption evaluation grades under corresponding load conditions is calculated based on ship annual carbon intensity grade boundaries, ship average ground speed and ship load conditions.
1) Setting real-time energy efficiency index according to annual carbon intensity of ship
The method is characterized in that the annual carbon intensity CII of the ship is used as a target for achieving specific grading, the oil consumption per hour of different loading conditions and navigational speed of the ship is used as an energy efficiency evaluation index, and the ship is subjected to real-time energy efficiency grading evaluation. Assuming that the average fuel consumption per hour at the full load state of the ship V g is f (V g), and the fuel consumption per hour at the ballast to full load ratio is b (V g), the annual carbon intensity CII (g per ton of sea) of the ship is:
Wherein DWT is the ship load ton; c f is the carbon coefficient of the fuel type used by the ship; t is the full-load sailing hour; a 1 is the ratio of annual ballast to full load voyage time; n is the estimated number of berthing days of the ship in annual; m is ton of oil consumption per day when the ship is berthed.
The boundaries of the ship annual carbon intensity CII grades are determined values for a certain ship year, and assuming that the upper limits of CII grades a to D are respectively denoted as CII A、CIIB、CIIC、CII- (grams per ton of sea), the boundary f (V g, i) for real-time oil consumption per hour ton limit of a certain graded ship, namely full load real-time energy efficiency assessment, is to be reached as follows:
f (V g, i) is a full-load real-time energy efficiency evaluation boundary, namely A, B, C, D in annual CII classification, namely f (V g, A) is a ship real-time energy efficiency A-level boundary, and f (V g, B) is a ship real-time energy efficiency B-level boundary. The boundary line (ballast boundary line) for the real-time energy efficiency evaluation of the ballast is the product of the fuel consumption ratio (ballast to full fuel consumption ratio) and the full boundary line, that is, the ballast boundary line is g (V g)*f(Vg, i); the boundary of the other load conditions is obtained by linear interpolation of draft by using the full-load ballast boundary, namely the boundary of the other load conditions (flat draft is T m) is Denoted d (V g,Tm)*f(Vg, i).
2) Acquiring real-time energy efficiency evaluation associated parameters
The DWT of the ship load ton is a determined value; in this example, the vessel uses carbon factor C f heavy oil of fuel type 3.114, light oil 3.151, diesel/gasoline 3.206.
The annual ballast and full-load sailing time ratio a 1 can be obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, if the lack of data can be set to be 1.0, the full-load and ballast ratio can be analyzed by using the draft data collected in the current year, and the full-load and ballast ratio can be calculated in real time.
N is the expected mooring days of the ship, and can be obtained through the ship annual statistical data or the same tonnage ship statistical data; the data determined to be in the stopped state may also be counted by using the speed data collected in the current year, and the estimated number of counted days in the whole year is N 1 x 365/the current number of days elapsed assuming N 1 days.
M is the ton of daily oil consumption of ship berthing, so that historical statistical average value or empirical value can be adopted, and the data of navigational speed and oil consumption collected in the current year can be adopted, and the oil consumption data and berthing days which are judged to be berthing states are summed up, counted and then calculated, namely, berthing total oil consumption/berthing total days.
B (V g) is the ratio of ballast to full-load oil consumption of the ship at different speeds, and is obtained by fitting analysis of pilot data, historical data or acquired data in the same year, and an exponential function fitting method is recommended, namely, assuming thatThe coefficients k 1 and k 2 are then determined from the actual data using a least squares method.
As shown in fig. 2, after acquiring the real-time energy efficiency evaluation related parameters, substituting the real-time energy efficiency evaluation related parameters into a full-load real-time energy efficiency evaluation boundary f (V g, i) formula to perform energy efficiency real-time evaluation index calculation, namely, calculating each boundary of the ship average fuel consumption evaluation grades under the corresponding load conditions based on the ship annual carbon intensity level boundary (known quantity, CII A、CIIB、CIIC、CII-), the ship average speed to ground V g, the real-time energy efficiency evaluation related parameters and the ship load conditions.
4. And a real-time energy efficiency evaluation and classification step, wherein the average oil consumption of the ship is compared with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and the average oil consumption of the ship is classified, namely the real-time energy efficiency of the ship is classified (A, B, C, D, E), so that the real-time energy efficiency condition of the ship is evaluated.
Taking the annual carbon intensity of the ship as a grade C as a qualified target, taking the oil consumption FC of the ship per hour as an evaluation index, calculating an index evaluation classification line f (V g, i) by using the ground speed V g according to the load condition of the real-time acquired draft judgment, taking full load as an example, taking the real-time energy efficiency of the ship as grade A when FC is less than f (V g, A), taking f (V g,A)≤FC<f(Vg, B) as grade B, and so on, wherein grade A is optimal, grade C is qualified, and grade E is worst. The real-time energy efficiency assessment and grading of the ship are shown in table 1.
TABLE 1
In Table 1
The invention also relates to a ship real-time energy efficiency evaluation system based on the carbon intensity, which corresponds to the ship real-time energy efficiency evaluation method based on the carbon intensity, and can be understood as a system for realizing the ship real-time energy efficiency evaluation method based on the carbon intensity, wherein the system has a structure shown in figure 3 and comprises a data acquisition processing module, a ship state judging module, a real-time energy efficiency index calculation acquisition module and a real-time energy efficiency evaluation grading module which are connected in sequence.
The data acquisition and processing module is used for acquiring and processing data by using the ship draught pressure sensor, the whole-ship fuel flow meter and the ship positioning component to acquire the average ship draught, the average ship oil consumption and the average ship ground speed. Preferably, the collected data are preprocessed, missing data are removed, then the data are averaged to obtain hour averaged data, the draft data obtained by the ship draft pressure sensor and the ship ground speed data obtained by the ship positioning component are directly and statistically averaged in hours to obtain the ship average draft and the ship average ground speed, and the ship average fuel consumption is obtained by subtracting the head-tail breakpoint values from the whole ship fuel flow meter data obtained by the whole ship fuel flow meter.
And the ship state judging module judges the ship sailing state and the ship carrying condition according to the average ground speed and the average draft of the ship, when the average ground speed of the ship is greater than a preset speed threshold, the ship is in a normal sailing state, otherwise, the ship is in a berthing or maneuvering state, when the average draft of the ship is greater than a full-load draft threshold, the ship carrying condition is full-load, and when the average draft of the ship is less than a ballast draft threshold, the ship carrying condition is ballast, and the rest is other carrying conditions. Preferably, the voyage threshold is 5 knots, the full-load draft threshold is 90% of the ship design draft set point, and the ballast draft threshold is 110% of the ship ballast draft set point.
And the real-time energy efficiency index calculation acquisition module is used for calculating and acquiring each boundary of the ship average oil consumption evaluation grade under the corresponding load condition based on the ship annual carbon intensity grade boundary, the ship average ground speed and the ship load condition by taking the acquired ship average oil consumption as the real-time energy efficiency evaluation index. Further, real-time energy efficiency evaluation associated parameters are also obtained, wherein the real-time energy efficiency evaluation associated parameters comprise ship load, carbon coefficient of fuel oil type used by the ship, the ratio of ship annual ballast to full-load sailing time, the estimated mooring days of the ship year, and the ratio of ship ballasts under different speeds to full-load oil consumption; the ratio of the annual ballasting time to the full-load sailing time of the ship and the expected berthing days of the ship year are obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, and the ratio of the ballasting time to the full-load oil consumption of the ship under different sailing speeds is obtained through pilot sailing data or through historical data fitting analysis; and calculating and obtaining each boundary of the ship average oil consumption evaluation classification under the corresponding load condition based on the ship annual carbon intensity level boundary, the ship average ground speed, the real-time energy efficiency evaluation related parameters and the ship load condition.
And the real-time energy efficiency evaluation and classification module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and classifying the average oil consumption of the ship so as to evaluate the real-time energy efficiency condition of the ship. Preferably, the real-time energy efficiency index calculation and acquisition module calculates and obtains each dividing line of the ship average fuel consumption evaluation grade under the corresponding load condition, wherein each dividing line comprises a grade A dividing line, a grade B dividing line, a grade C dividing line and a grade D dividing line; and the real-time energy efficiency evaluation and classification module compares the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, performs A-E classification on the average oil consumption of the ship, and evaluates the real-time energy efficiency condition of the ship as a qualified target when the C level is reached.
According to the ship real-time energy efficiency evaluation method and system based on the carbon intensity, ship draught pressure sensors, full ship fuel flow meters and ship GPS signals are collected; preprocessing and averaging the data, taking average data of each hour, obtaining real-time draft T m of the ship, total oil consumption FC of each hour and ground speed V g of the ship, judging the ship load condition according to T m, calculating an oil consumption grading boundary of each hour under the corresponding load condition according to V g, grading A-E of the oil consumption of the ship per hour, and evaluating the real-time energy efficiency condition of the ship.
It should be noted that the above-described embodiments will enable those skilled in the art to more fully understand the invention, but do not limit it in any way. Therefore, although the present invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that the present invention may be modified or equivalent, and in all cases, all technical solutions and modifications which do not depart from the spirit and scope of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. The ship real-time energy efficiency evaluation method based on the carbon intensity is characterized by comprising the following steps of:
a data acquisition and processing step, namely, utilizing a ship draught pressure sensor, a whole-ship fuel flow meter and a ship positioning component to acquire the average ship draught, the average ship oil consumption and the average ship ground speed;
A ship state judging step, namely judging the ship navigation state and the loading condition according to the average ground speed and the average draft of the ship, wherein when the average ground speed of the ship is greater than a preset navigation speed threshold, the ship is in a navigation state, and otherwise, the ship is in a berthing or maneuvering state; the ship loading condition is full load when the average ship draft is greater than the full load draft threshold, the ship loading condition is ballasted when the average ship draft is less than the ballasted draft threshold, and the ship average draft is other loading conditions when the average ship draft is between the ballasted draft threshold and the full load draft threshold;
Calculating and acquiring a real-time energy efficiency index, namely taking the acquired average oil consumption of the ship as a real-time energy efficiency evaluation index, and acquiring real-time energy efficiency evaluation associated parameters, wherein the real-time energy efficiency evaluation associated parameters comprise ship load, carbon coefficient of the type of the ship using fuel oil, the ratio of the ship annual ballast to full-load sailing time, the estimated ship annual berthing days and the ratio of the ship ballasting to full-load oil consumption under different navigational speeds; the ratio of the annual ballasting time to the full-load sailing time of the ship and the expected berthing days of the ship year are obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, and the ratio of the ballasting time to the full-load oil consumption of the ship at different sailing speeds is obtained through pilot voyage data or through historical data fitting analysis; based on the ship annual carbon intensity grade boundary, the ship average ground speed, the real-time energy efficiency evaluation related parameters and the ship load condition, calculating to obtain ship average oil consumption evaluation grading boundaries under corresponding load conditions, wherein each boundary comprises a class A boundary, a class B boundary, a class C boundary and a class D boundary;
A real-time energy efficiency evaluation and classification step, namely comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and classifying the average oil consumption of the ship so as to evaluate the real-time energy efficiency condition of the ship; the ship real-time energy efficiency is A grade when the ship average oil consumption is smaller than the A grade boundary under the corresponding load condition, the ship real-time energy efficiency is B grade when the ship average oil consumption is larger than or equal to the A grade boundary under the corresponding load condition and smaller than the B grade boundary, the ship real-time energy efficiency is C grade when the ship average oil consumption is larger than or equal to the B grade boundary under the corresponding load condition and smaller than the C grade boundary, the ship real-time energy efficiency is D grade when the ship average oil consumption is larger than or equal to the C grade boundary under the corresponding load condition and smaller than the D grade boundary, and the ship real-time energy efficiency is E grade when the ship average oil consumption is larger than or equal to the D grade boundary under the corresponding load condition.
2. The method for evaluating the real-time energy efficiency of the ship based on the carbon intensity according to claim 1, wherein in the data acquisition and processing step, the acquired data is preprocessed, missing data is removed, then the data is subjected to averaging processing, the hour averaged data is obtained, the draft data obtained by the ship draft pressure sensor and the ship ground speed data obtained by the ship positioning component are directly and statistically averaged for hours, the ship average draft and the ship average ground speed are obtained, and the ship average oil consumption is obtained by subtracting the head-tail breakpoint value from the whole ship fuel flow meter data obtained by the whole ship fuel flow meter.
3. The method for estimating the real-time energy efficiency of a ship based on the carbon intensity according to claim 1, wherein in the ship state determining step, the navigational speed threshold is 5 knots, the full-load draft threshold is 90% of the ship design draft set value, and the ballast draft threshold is 110% of the ship ballast draft set value.
4. A ship real-time energy efficiency evaluation system based on carbon intensity is characterized by comprising a data acquisition processing module, a ship state judging module, a real-time energy efficiency index calculation acquisition module and a real-time energy efficiency evaluation grading module which are connected in sequence,
The data acquisition processing module is used for acquiring and processing data by using a ship draught pressure sensor, a whole-ship fuel flow meter and a ship positioning component to acquire the average ship draught, the average ship oil consumption and the average ship ground speed;
The ship state judging module judges the ship navigation state and the loading condition according to the average ground speed and the average draft of the ship, when the average ground speed of the ship is greater than a preset navigation speed threshold, the ship is in a navigation state, and otherwise, the ship is in a berthing or maneuvering state; when the average draft of the ship is greater than the full load draft threshold, the ship loading condition is full load, when the average draft of the ship is less than the ballast draft threshold, the ship loading condition is ballast, and when the average draft of the ship is between the ballast draft threshold and the full load draft threshold, the ship loading condition is other loading conditions;
The real-time energy efficiency index calculation acquisition module is used for taking the acquired average oil consumption of the ship as a real-time energy efficiency evaluation index and also acquiring real-time energy efficiency evaluation associated parameters, wherein the real-time energy efficiency evaluation associated parameters comprise ship load, carbon coefficient of the type of the ship using fuel oil, the ratio of the ship annual ballast to full-load sailing time, the estimated ship annual berthing days and the ratio of the ship ballasts under different sailing speeds to full-load oil consumption; the ratio of the annual ballasting time to the full-load sailing time of the ship and the expected berthing days of the ship year are obtained through the annual statistical data of the ship or the statistical data of the ship with the same tonnage, and the ratio of the ballasting time to the full-load oil consumption of the ship under different sailing speeds is obtained through pilot sailing data or through historical data fitting analysis; based on the ship annual carbon intensity grade boundary, the ship average ground speed, the real-time energy efficiency evaluation related parameters and the ship load condition, calculating to obtain ship average oil consumption evaluation grading boundaries under corresponding load conditions, wherein each boundary comprises a class A boundary, a class B boundary, a class C boundary and a class D boundary;
and the real-time energy efficiency evaluation and classification module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation and classification under the corresponding load condition, and carrying out A-E classification on the average oil consumption of the ship, wherein the ship is qualified when the C level is reached, so that the real-time energy efficiency condition of the ship is evaluated.
5. The system for estimating the real-time energy efficiency of the ship based on the carbon intensity according to claim 4, wherein the data acquisition processing module is used for preprocessing the acquired data, eliminating missing data, averaging the data to obtain hour averaged data, and directly counting and averaging the water-draft data obtained by the ship water-draft pressure sensor and the ship ground speed data obtained by the ship positioning component for hours to obtain the ship average draft and the ship average ground speed, and subtracting the head-tail breakpoint value from the whole-ship fuel flow meter data obtained by the whole-ship fuel flow meter to obtain the ship average fuel consumption.
6. The carbon intensity based vessel real time energy efficiency assessment system of claim 4, wherein the voyage threshold is 5 knots, the full load draft threshold is 90% of the vessel design draft set point, and the ballast draft threshold is 110% of the vessel ballast draft set point.
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| CN109658544A (en) * | 2018-12-06 | 2019-04-19 | 上港集团长江港口物流有限公司 | Inner branch line container ship energy efficiency management system and its implementation |
| CN115195971A (en) * | 2022-07-15 | 2022-10-18 | 中国船舶重工集团公司第七一一研究所 | Ship energy efficiency management system, method and storage medium |
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| CN107563576A (en) * | 2017-10-14 | 2018-01-09 | 连云港杰瑞深软科技有限公司 | A kind of ship intelligence energy efficiency management system |
| CN109658544A (en) * | 2018-12-06 | 2019-04-19 | 上港集团长江港口物流有限公司 | Inner branch line container ship energy efficiency management system and its implementation |
| CN115195971A (en) * | 2022-07-15 | 2022-10-18 | 中国船舶重工集团公司第七一一研究所 | Ship energy efficiency management system, method and storage medium |
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