CN115796504A - Ship real-time energy efficiency evaluation method and system based on carbon strength - Google Patents
Ship real-time energy efficiency evaluation method and system based on carbon strength Download PDFInfo
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Abstract
The invention provides a carbon intensity-based ship real-time energy efficiency evaluation method and a carbon intensity-based ship real-time energy efficiency evaluation system.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a method and a system for evaluating ship real-time energy efficiency based on carbon strength.
Background
As an important tool for waterway transportation, how to evaluate the energy efficiency condition in ship operation is a great concern of shipowners, and the problem relates to how to set reasonable energy efficiency evaluation criteria. The international maritime organization provides relevant regulations based on the operating carbon strength CII, aims to evaluate the energy efficiency condition of the ship, and makes the ship not meeting the requirements of the carbon strength regulations face punishment measures. However, the operating carbon strength CII is an annual energy efficiency evaluation index, is directly related to the operating mode and the operating condition of the ship besides the performance of the ship, and if the CII is directly applied to the real-time energy efficiency evaluation of the ship, certain loading conditions and navigation speed indexes are always good, and certain conditions are always poor, so that the CII loses the evaluation significance, cannot reasonably reflect the influence of the current ship energy efficiency condition on the annual carbon strength index, and cannot be directly applied to the real-time evaluation of the ship energy efficiency in operation.
The existing ship real-time energy efficiency index evaluation scheme is that relative energy efficiency of a ship is evaluated, a formulated evaluation standard refers to historical data of the ship, data of sister ships and data of other ships in the same level, a range is manually defined through relative comparison, real-time energy efficiency conditions of the ship are evaluated, and whether an absolute value of a ship real-time energy efficiency index reaches a certain absolute value is not determined, so that a final annual index can meet the evaluation required by regulations, and an energy efficiency evaluation reference based on an energy efficiency compliance premise cannot be provided for the ship in operation.
Disclosure of Invention
The invention provides a carbon intensity-based ship real-time energy efficiency evaluation method, which aims to solve the problems that the relative energy efficiency of a ship is evaluated in the technology, energy efficiency evaluation reference cannot be provided for the ship in operation on the premise of energy efficiency compliance, and the like. The invention also relates to a real-time energy efficiency evaluation system of the ship based on the carbon strength.
The technical scheme of the invention is as follows:
a real-time energy efficiency assessment method for a ship based on carbon strength is characterized by comprising the following steps:
a data acquisition and processing step, wherein a ship draft pressure sensor, a whole-ship fuel oil flowmeter and a ship positioning component are used for acquiring and processing data to obtain the average draught of a ship, the average oil consumption of the ship and the average speed of the ship to the ground;
judging the ship state, namely judging the ship navigation state and the loading condition according to the average ship-to-ground speed and the average ship draught, wherein when the average ship-to-ground speed is greater than a preset speed threshold, the ship is in the navigation state, and otherwise, the ship is in a berthing or maneuvering state; the ship loading condition is full load when the average draught of the ship is greater than a full load draught threshold value, the ship loading condition is ballast when the average draught of the ship is less than a ballast draught threshold value, and the ship loading condition is other loading conditions when the average draught of the ship is between the ballast draught threshold value and the full load draught threshold value;
calculating and acquiring a real-time energy efficiency index, namely calculating and acquiring boundary lines of the average oil consumption evaluation grade of the ship under the corresponding loading condition based on an annual carbon strength grade boundary line of the ship, the average speed of the ship to the ground and the loading condition of the ship by taking the acquired average oil consumption of the ship as a real-time energy efficiency evaluation index;
and a real-time energy efficiency evaluation grading step, namely comparing the average oil consumption of the ship with each dividing line of the ship average oil consumption evaluation grading under the corresponding loading condition, and grading the average oil consumption of the ship 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 further obtained, and the real-time energy efficiency evaluation associated parameters include ship load, carbon coefficient of the type of fuel used by the ship, ratio of ship annual ballast to full-load voyage time, estimated annual berthing days of the ship, and ratio of ballast to full-load oil consumption of the ship at different voyage speeds; the ratio of the annual ballast to full-load voyage time of the ship and the annual estimated berthing days of the ship are obtained through the historical statistical data or the statistical data of the same-tonnage ship, and the ratio of the ballast to the full-load oil consumption of the ship at different voyages is obtained by adopting pilot data or historical data fitting analysis;
and calculating to obtain each boundary of the ship average oil consumption evaluation grades under the corresponding loading conditions based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed, the real-time energy efficiency evaluation associated parameters and the ship loading conditions.
Preferably, in the data acquisition and processing step, the acquired data is preprocessed to eliminate missing data, then the data is averaged to obtain hourly averaged data, draft data obtained by the ship draft pressure sensor and ship-to-ground speed data obtained by the ship positioning component are directly averaged in an hourly mode to obtain ship average draft and ship average-to-ground speed, and ship average oil consumption is obtained by subtracting the head-tail break point values of the whole-ship oil flow meter data obtained by the whole-ship oil flow meter.
Preferably, in the ship state determination step, the navigational speed threshold is 5 knots, the full-load draft threshold is 90% of the ship design draft setting, and the ballast draft threshold is 110% of the ship ballast draft setting.
Preferably, each boundary line corresponding to the grading of the average oil consumption evaluation of the ship under the loading condition is obtained through calculation in the real-time energy efficiency index calculation obtaining step, and each boundary line comprises a grade A boundary line, a grade B boundary line, a grade C boundary line and a grade D boundary line;
in the real-time energy efficiency evaluation grading step, when the average oil consumption of the ship is less than the grade A boundary under the corresponding loading condition, the real-time energy efficiency of the ship is grade A, when the average oil consumption of the ship is greater than or equal to the grade A boundary under the corresponding loading condition and less than the grade B boundary, the real-time energy efficiency of the ship is grade B, when the average oil consumption of the ship is greater than or equal to the grade B boundary under the corresponding loading condition and less than the grade C boundary, the real-time energy efficiency of the ship is grade C, when the average oil consumption of the ship is greater than or equal to the grade C boundary under the corresponding loading condition and less than the grade D boundary, the real-time energy efficiency of the ship is grade E.
A ship real-time energy efficiency evaluation system based on carbon intensity is characterized by comprising a data acquisition and processing module, a ship state judgment module, a real-time energy efficiency index calculation and acquisition module and a real-time energy efficiency evaluation grading module which are sequentially connected,
the data acquisition and processing module is used for acquiring and processing data by utilizing the ship draft pressure sensor, the whole ship fuel oil flowmeter and the ship positioning component to obtain the average draught of the ship, the average oil consumption of the ship and the average speed of the ship to the ground;
the ship state judging module is used for judging the ship navigation state and the loading condition according to the average ship-to-ground speed and the average ship draught, when the average ship-to-ground speed is greater than a preset speed threshold value, the ship is in the navigation state, otherwise, the ship is in the berthing or maneuvering state; when the average draught of the ship is greater than the full-load draught threshold value, the loading condition of the ship is full load, when the average draught of the ship is less than the ballast draught threshold value, the loading condition of the ship is ballast, and when the average draught of the ship is between the ballast draught threshold value and the full-load draught threshold value, the loading condition of the ship is other loading conditions;
the real-time energy efficiency index calculation acquisition module is used for calculating and obtaining each boundary of the ship average oil consumption evaluation grades under the corresponding loading conditions based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed and the loading conditions of the ship by taking the acquired ship average oil consumption as a real-time energy efficiency evaluation index;
and the real-time energy efficiency evaluation grading module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, and grading 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 associated parameters, wherein the real-time energy efficiency evaluation associated parameters include ship load, carbon coefficient of the type of fuel used by the ship, ratio of ship annual ballast to full-load voyage time, estimated annual berthing days of the ship, and ratio of ballast to full-load oil consumption of the ship at different voyage speeds; the ratio of the annual ballast to full-load voyage time of the ship and the annual estimated berthing days of the ship are obtained through the historical statistical data or the statistical data of the same-tonnage ship, and the ratio of the ballast to the full-load oil consumption of the ship at different voyages is obtained by adopting pilot data or historical data fitting analysis; and calculating to obtain each boundary of the ship average oil consumption evaluation grades under the corresponding loading conditions based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed, the real-time energy efficiency evaluation associated parameters and the ship loading conditions.
Preferably, the data acquisition processing module performs preprocessing on the acquired data, eliminates missing data, then performs averaging processing on the data to obtain hourly averaged data, and directly performs hourly statistical averaging on draft data obtained by the ship draft pressure sensor and ship-to-ground speed data obtained by the ship positioning component to obtain ship average draft and ship average-to-ground speed, and subtracts head and tail break point values of the whole-ship fuel oil flow meter data obtained by the whole-ship fuel oil flow meter to obtain ship average oil consumption.
Preferably, the navigational speed threshold is 5 knots, the full 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 and obtains all boundary lines of the ship average oil consumption evaluation grading under the corresponding load condition, including a grade A boundary line, a grade B boundary line, a grade C boundary line and a grade D boundary line; the real-time energy efficiency evaluation grading module compares the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, carries out A-E grading on the average oil consumption of the ship, and evaluates the real-time energy efficiency condition of the ship when the average oil consumption of the ship reaches the grade C.
The invention has the beneficial effects that:
according to the carbon strength-based ship real-time energy efficiency evaluation method, the ship real-time energy efficiency evaluation index is formulated on the premise of ship annual carbon strength compliance, ship real-time energy consumption related data are collected, the obtained ship average oil consumption is used as the real-time energy efficiency evaluation index, and the ship average oil consumption evaluation grading boundary under the corresponding loading condition is obtained through calculation, so that the real-time energy efficiency of ships under different loading conditions and navigation speeds of the ships is evaluated and graded, the energy efficiency compliance condition of the ships can be evaluated in real time, the problems that the existing evaluation on the relative energy efficiency of the ships cannot provide energy efficiency evaluation reference and the like on the premise of energy efficiency compliance for the ships in operation are solved, and targeted reference and guidance are provided for the ship annual operating carbon strength compliance.
The invention also relates to a carbon strength-based ship real-time energy efficiency evaluation system, which corresponds to the carbon strength-based ship real-time energy efficiency evaluation method and can be understood as a system for realizing the carbon strength-based ship real-time energy efficiency evaluation method.
Drawings
FIG. 1 is a flow chart of a method for real-time energy efficiency assessment of a ship based on carbon strength according to the present invention.
FIG. 2 is a schematic diagram of a method for evaluating the real-time energy efficiency of a ship based on carbon strength according to the invention.
FIG. 3 is a block diagram of a real-time energy efficiency assessment system for a ship based on carbon strength.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
The invention relates to a real-time energy efficiency evaluation method for a ship based on carbon strength, which is shown in a flow chart of figure 1 and comprises the following steps:
1. and data acquisition and processing, namely acquiring and processing data by using a ship draft pressure sensor, a whole-ship fuel oil flowmeter and a ship positioning component to obtain the average draught of the ship, the average oil consumption of the ship and the average speed of the ship to the ground. As shown in a schematic diagram of fig. 2, namely collecting ship draft pressure sensors, a whole ship fuel oil flow meter and ship GPS signals, wherein the collection frequency suggests 1Hz; preprocessing the original data and eliminating missing data; averaging the data to obtain hourly averaged data, wherein draft data (the draft data refers to fore-and-aft average draft data) obtained by the pressure sensor and ship-to-ground speed data obtained by the GPS are directly averaged in hours to obtain ship average draft (average draft for short, or average draft in hours, which is average of fore-and-aft average draft data by time statistics) T m And the average speed of the ship to the ground (hereinafter referred to as the average speed of the ship to the ground) V g And subtracting the head-tail break point value of the signals of the whole ship fuel flowmeter to obtain the average oil consumption (namely the oil consumption per hour) FC of the ship.
2. A ship state judging step of judging the average speed V of the ship to the ground g And mean draft T of the vessel m Judging the sailing state and the loading condition of the ship, wherein when the average speed of the ship to the ground is greater than a preset speed threshold value, the ship is in the sailing state (or in the normal sailing state), and otherwise, the ship is in a berthing or maneuvering stateAnd (3) a state that when the average draft of the ship is greater than the full draft threshold value, the loading condition of the ship is full, and when the average draft of the ship is less than the ballast draft threshold value, the loading condition of the ship is ballast, and the balance of the loading condition is other loading conditions (namely other loading conditions when the average draft of the ship is between the ballast draft threshold value and the full draft threshold value).
The real-time energy efficiency evaluation of the ship only aims at the navigation of the ship, so the navigation/berthing state of the ship is firstly judged, and the evaluation criteria are as follows: speed to ground V g >5kn (kn is section, namely the navigational speed threshold is 5 sections) is in a normal navigation state, and otherwise, is in a parking or maneuvering state; and (3) carrying out load condition judgment on the navigation state data, wherein the evaluation standard is as follows: average draught T of ship m >0.9*T d To be fully loaded, T m <1.1*T b For ballasting, 1.1 × T b ≤T m ≤0.9*T d Is other loading conditions, where T d Setting parameters for the initial design stage, namely ship design draft set value (corresponding to average draft of bow and stern), and setting the full-load draft threshold value to be 0.9T d ，T b Setting a parameter, namely a ballast draft set value (corresponding to the average draft between the head and the stern) for the initial design stage, wherein the ballast draft threshold value is 1.1T b . It should be noted that the draft thresholds are preferred values of the embodiments, are not limited only, and may be set to other values, for example, the full-load draft threshold is 0.8 × t d 、0.92*T d Etc., e.g. a ballast draft threshold of 1.2 × t b 、1.15*T b 、1.18*T b And so on.
3. And calculating and obtaining a real-time energy efficiency index, namely calculating and obtaining each boundary of the ship average oil consumption evaluation grades under the corresponding loading condition based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed and the loading condition of the ship by taking the obtained ship average oil consumption FC as the real-time energy efficiency evaluation index.
1) Setting real-time energy efficiency index according to annual carbon intensity of ship
The method is characterized in that the aim of achieving specific grading of annual carbon strength CII of the ship is taken, and real-time energy efficiency grading evaluation is carried out on the ship by taking oil consumption per hour of different loading conditions and navigational speeds of the ship as an energy efficiency evaluation index. Assuming the average speed over the ground (or called full load) V of the ship under full load g Hourly oil consumption of f (V) g ) The ratio of ballast to full load fuel consumption per hour is b (V) g ) The annual carbon strength CII (grams per ton of nautical miles) of the ship is:
wherein DWT is ship load ton; c f Carbon coefficient of fuel type for ship; t is the full load voyage hour; a is a 1 The ratio of annual ballast to full load voyage time; n is the estimated berthing days of the ship in the year; and M is the daily fuel consumption tonnage of the ship in mooring.
The annual carbon strength CII grade boundary of a ship is a definite value for a certain year of a certain ship, and the upper limits of the CII grades A-D are respectively assumed to be recorded as CII A 、CII B 、CII C 、CII - (g per ton of nautical miles), the limit of ton of real-time oil consumption per hour for a certain classification ship, i.e., the boundary f (V) of full-load real-time energy efficiency evaluation g I) the following:
f(V g i) is a boundary of a full-load real-time energy efficiency assessment, referred to as a full-load boundary, where i is an annual CII hierarchy, i.e., A, B, C, D, i.e., f (V) g A) is the boundary line of class A for real-time energy efficiency of the ship, f (V) g And B) is a boundary line of the grade B of the real-time energy efficiency of the ship. It should be noted that the boundary (ballast boundary) of the real-time energy efficiency estimation of the ballast is the product of the fuel consumption ratio (ballast to full-load fuel consumption ratio) and the full-load boundary, i.e., the ballast boundary is g (V) g )*f(V g I); the boundaries for the remaining other load conditions are obtained by draft linear interpolation using the full load boundary, i.e. the other load conditions (flat draft is T) m ) The boundary is
Is marked as d (V) g ,T m )*f(V g ,i)。
2) Obtaining real-time energy efficiency assessment associated parameters
DWT of ship load ton is a determined value; in this embodiment, the carbon coefficient C of the fuel type used by the ship f The heavy oil is 3.114, the light oil is 3.151 and the diesel oil/gasoline is 3.206.
Annual ballast to full load voyage time ratio a 1 The method can be obtained through ship historical statistical data or same-tonnage ship statistical data, and if the data is lack of data, the data can be set to be 1.0, and the full load and ballast ratio can be analyzed and calculated in real time by utilizing the draft data collected in the current year.
N is the estimated berthing days of the ship in the year and can be obtained through historical statistical data of the ship or statistical data of the ship with the same tonnage; the data determined as the parking state may also be counted using the current year of collected speed data, assuming N 1 Day, the predicted statistical number of days in the whole year is N 1 * 365/current elapsed days.
And M is the daily fuel consumption tonnage of the ship in berthing, so that the fuel consumption data judged to be in a berthing state and berthing days are summed up and counted by adopting a historical statistical average value or an empirical value or adopting the navigational speed and the fuel consumption data acquired in the same year, and then the sum is calculated, namely the berthing total fuel consumption/the berthing total days.
b(V g ) For the specific value of ballast and full-load oil consumption of the ship under different navigational speeds, the specific value is obtained by fitting and analyzing pilot data, historical data or data collected in the same year, and an exponential function fitting method is proposed, namely, an assumption is made
Then determining the coefficient k by using a least square method according to actual data 1 And k 2 。
As shown in fig. 2, after obtaining the real-time energy efficiency assessment correlation parameter, the obtained real-time energy efficiency assessment correlation parameter is substituted into a boundary f (V) fully carrying the real-time energy efficiency assessment g And i) calculating an energy efficiency real-time evaluation index by using a formula, namely based on an annual carbon strength grade boundary (known quantity, CII) of the ship A 、CII B 、CII C 、CII - ) Average speed V of ship to ground g And calculating the real-time energy efficiency evaluation associated parameters and the ship loading condition to obtain each boundary of the ship average oil consumption evaluation grade under the corresponding loading condition.
4. And a step of real-time energy efficiency evaluation grading, which is to compare the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, and grade the average oil consumption of the ship, namely grading the real-time energy efficiency of the ship (A, B, C, D and E) so as to evaluate the real-time energy efficiency condition of the ship.
The annual carbon strength of the ship reaches C level as a qualified target, the oil consumption FC of the ship per hour is used as an evaluation index, and the ground speed V is utilized according to the real-time collected loading condition of draught judgment g Calculating index evaluation grading line f (V) g I) full load, FC<f(V g The real-time energy efficiency of the ship is A grade at A), f (V) g ,A)≤FC<f(V g And B) is the grade B, and the analogy is repeated, wherein the grade A is the optimal grade, the grade C is the qualified grade, and the grade E is the worst grade. The real-time energy efficiency assessment of the ship is graded as shown in table 1.
TABLE 1
In Table 1
The invention also relates to a carbon-strength-based ship real-time energy efficiency evaluation system, which corresponds to the carbon-strength-based ship real-time energy efficiency evaluation method and can be understood as a system for realizing the carbon-strength-based ship real-time energy efficiency evaluation method, and the structure of the system is shown in fig. 3, and the system comprises a data acquisition and processing module, a ship state judgment module, a real-time energy efficiency index calculation and acquisition module and a real-time energy efficiency evaluation grading module which are sequentially connected.
The data acquisition and processing module acquires and processes data by using the ship draft pressure sensor, the whole-ship fuel oil flow meter and the ship positioning component to obtain the average draught of the ship, the average oil consumption of the ship and the average speed of the ship to the ground. Preferably, the acquired data are preprocessed to eliminate missing data, then the data are averaged to obtain hourly averaged data, draft data obtained by the ship draft pressure sensor and ship-to-ground speed data obtained by the ship positioning component are directly counted and averaged hourly to obtain ship average draft and ship average-to-ground speed, and whole-ship fuel oil flow meter data obtained by the whole-ship fuel oil flow meter are subtracted from head and tail break point values to obtain ship average oil consumption.
The ship state judging module is used for judging the ship navigation state and the loading condition according to the average ship-to-ground speed and the average ship draft, when the average ship-to-ground speed is greater than a preset speed threshold, the ship is in a normal navigation state, otherwise, the ship is in a berthing or maneuvering state, when the average ship draft is greater than a full load draft threshold, the ship loading condition is full load, when the average ship draft is less than a ballast draft threshold, the ship loading condition is ballast, and the rest is other loading conditions. Preferably, the navigational speed threshold is 5 knots, the full draft threshold is 90% of the ship design draft setting, and the ballast draft threshold is 110% of the ship ballast draft setting.
And the real-time energy efficiency index calculation acquisition module is used for calculating and obtaining various dividing lines of the ship average oil consumption evaluation grade under the corresponding loading condition based on the ship annual carbon strength grade dividing line, the ship average ground speed and the ship loading condition by taking the acquired ship average oil consumption as a real-time energy efficiency evaluation index. Further, real-time energy efficiency evaluation associated parameters are obtained, wherein the real-time energy efficiency evaluation associated parameters comprise ship load, carbon coefficient of the type of fuel used by the ship, ratio of annual ballast to full-load voyage time of the ship, estimated annual berthing days of the ship, and ratio of ballast to full-load oil consumption of the ship at different voyage speeds; the ratio of the annual ballast to full-load voyage time of the ship and the annual estimated berthing days of the ship are obtained through historical ship statistical data or same-tonnage ship statistical data, and the ratio of the annual ballast to full-load oil consumption of the ship at different voyage speeds is obtained through pilot data or historical data fitting analysis; and calculating to obtain each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition based on the ship annual carbon strength grade boundary, the ship average ground speed, the real-time energy efficiency evaluation correlation parameter and the ship loading condition.
And the real-time energy efficiency evaluation grading module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, and grading 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 obtaining module calculates and obtains each boundary corresponding to the grading of the average oil consumption evaluation of the ship under the loading condition, wherein each boundary comprises a grade A boundary, a grade B boundary, a grade C boundary and a grade D boundary; the real-time energy efficiency evaluation grading module compares the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, carries out A-E grading on the average oil consumption of the ship, and evaluates the real-time energy efficiency condition of the ship when the average oil consumption of the ship reaches the grade C.
The invention relates to a real-time energy efficiency evaluation method and a real-time energy efficiency evaluation system for a ship based on carbon strength, which are characterized in that ship draft pressure sensors, a whole-ship fuel oil flow meter and ship GPS signals are collected; preprocessing and averaging the data, and taking the average data per hour to obtain the real-time draught T of the ship m FC total oil consumption per hour and ship speed to ground V g According to T m Judging the loading condition of the ship according to V g And calculating an hourly oil consumption grading boundary under the corresponding loading condition, carrying out A-E grading on the hourly oil consumption of the ship, and evaluating the real-time energy efficiency condition of the ship.
It should be noted that the above-described embodiments may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention 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 various changes and modifications can be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A real-time energy efficiency assessment method for a ship based on carbon strength is characterized by comprising the following steps:
a data acquisition and processing step, in which a ship draft pressure sensor, a whole-ship fuel oil flowmeter and a ship positioning component are utilized to acquire data acquisition and processing so as to acquire the average draught of a ship, the average oil consumption of the ship and the average speed of the ship to the ground;
judging the ship state, namely judging the ship navigation state and the loading condition according to the average ship-to-ground speed and the average ship draught, wherein when the average ship-to-ground speed is greater than a preset speed threshold, the ship is in the navigation state, and otherwise, the ship is in a berthing or maneuvering state; the ship loading condition is full load when the average draught of the ship is greater than a full load draught threshold value, the ship loading condition is ballast when the average draught of the ship is less than a ballast draught threshold value, and the ship loading condition is other loading conditions when the average draught of the ship is between the ballast draught threshold value and the full load draught threshold value;
calculating and obtaining a real-time energy efficiency index, namely calculating and obtaining various dividing lines of the average oil consumption evaluation grade of the ship under the corresponding loading condition based on the annual carbon strength grade dividing line of the ship, the average speed of the ship to the ground and the loading condition of the ship by taking the obtained average oil consumption of the ship as a real-time energy efficiency evaluation index;
and a real-time energy efficiency evaluation grading step, namely comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, and grading the average oil consumption of the ship to evaluate the real-time energy efficiency condition of the ship.
2. The carbon-intensity-based ship real-time energy efficiency assessment method according to claim 1, wherein in the real-time energy efficiency index calculation obtaining step, real-time energy efficiency assessment associated parameters are further obtained, and the real-time energy efficiency assessment associated parameters include ship load, carbon coefficient of fuel oil type used by a ship, ratio of ship annual ballast to full-load voyage time, ship annual estimated berthing days, and ratio of ballast to full-load oil consumption of the ship at different voyage speeds; the ratio of the annual ballast to full-load voyage time of the ship and the annual estimated berthing days of the ship are obtained through the historical statistical data or the statistical data of the same-tonnage ship, and the ratio of the ballast to the full-load oil consumption of the ship at different voyages is obtained by adopting pilot data or historical data fitting analysis;
and calculating to obtain each boundary of the ship average oil consumption evaluation grades under the corresponding loading conditions based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed, the real-time energy efficiency evaluation associated parameters and the ship loading conditions.
3. The carbon strength-based ship real-time energy efficiency evaluation method according to claim 1 or 2, wherein in the data acquisition and processing step, acquired data are preprocessed to eliminate missing data, then the data are averaged to obtain hourly averaged data, draft data obtained by a ship draft pressure sensor and ship-to-ground speed data obtained by a ship positioning component are directly subjected to hourly statistical averaging to obtain ship average draft and ship average-to-ground speed, and ship average oil consumption is obtained by subtracting head and tail break point values from ship-to-tail break point values of the whole-ship oil flow meter data obtained by the whole-ship oil flow meter.
4. The method for real-time energy efficiency evaluation of ships based on carbon strength according to claim 1 or 2, wherein in the ship state determination step, the navigational speed threshold is 5 knots, the draft loading threshold is 90% of the ship design draft setting, and the draft ballast threshold is 110% of the ship ballast draft setting.
5. The real-time energy efficiency evaluation method for the ship based on the carbon strength as claimed in claim 1 or 2, wherein the real-time energy efficiency index calculation obtaining step calculates to obtain each boundary line corresponding to the grading of the average oil consumption evaluation of the ship under the loading condition, and the boundary lines include a grade A boundary line, a grade B boundary line, a grade C boundary line and a grade D boundary line;
in the real-time energy efficiency evaluation grading step, when the average oil consumption of the ship is less than the grade A boundary under the corresponding loading condition, the real-time energy efficiency of the ship is grade A, when the average oil consumption of the ship is greater than or equal to the grade A boundary under the corresponding loading condition and less than the grade B boundary, the real-time energy efficiency of the ship is grade B, when the average oil consumption of the ship is greater than or equal to the grade B boundary under the corresponding loading condition and less than the grade C boundary, the real-time energy efficiency of the ship is grade C, when the average oil consumption of the ship is greater than or equal to the grade C boundary under the corresponding loading condition and less than the grade D boundary, the real-time energy efficiency of the ship is grade E.
6. A ship real-time energy efficiency evaluation system based on carbon intensity is characterized by comprising a data acquisition and processing module, a ship state judgment module, a real-time energy efficiency index calculation and acquisition module and a real-time energy efficiency evaluation grading module which are sequentially connected,
the data acquisition and processing module is used for acquiring and processing data by utilizing the ship draft pressure sensor, the whole ship fuel oil flowmeter and the ship positioning component to obtain the average draught of the ship, the average oil consumption of the ship and the average speed of the ship to the ground;
the ship state judging module is used for judging the ship navigation state and the loading condition according to the average ship-to-ground speed and the average ship draught, when the average ship-to-ground speed is greater than a preset speed threshold value, the ship is in the navigation state, otherwise, the ship is in the berthing or maneuvering state; when the average draught of the ship is greater than the full-load draught threshold value, the loading condition of the ship is full load, when the average draught of the ship is less than the ballast draught threshold value, the loading condition of the ship is ballast, and when the average draught of the ship is between the ballast draught threshold value and the full-load draught threshold value, the loading condition of the ship is other loading conditions;
the real-time energy efficiency index calculation acquisition module is used for calculating and obtaining each boundary of the ship average oil consumption evaluation grades under the corresponding loading conditions based on the annual carbon strength grade boundary of the ship, the average ship-to-ground speed and the loading conditions of the ship by taking the acquired ship average oil consumption as a real-time energy efficiency evaluation index;
and the real-time energy efficiency evaluation grading module is used for comparing the average oil consumption of the ship with each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition, and grading the average oil consumption of the ship so as to evaluate the real-time energy efficiency condition of the ship.
7. The carbon-intensity-based ship real-time energy efficiency evaluation system according to claim 6, wherein in the real-time energy efficiency index calculation obtaining module, real-time energy efficiency evaluation associated parameters are further obtained, and the real-time energy efficiency evaluation associated parameters include ship load, carbon coefficient of fuel oil type used by a ship, ratio of ship annual ballast to full-load voyage time, ship annual estimated berthing days, and ratio of ballast to full-load oil consumption of the ship at different voyage speeds; the ratio of the annual ballast to full-load voyage time of the ship and the annual estimated berthing days of the ship are obtained through historical ship statistical data or same-tonnage ship statistical data, and the ratio of the annual ballast to full-load oil consumption of the ship at different voyage speeds is obtained through pilot data or historical data fitting analysis; and calculating to obtain each boundary of the ship average oil consumption evaluation grading under the corresponding loading condition based on the ship annual carbon strength grade boundary, the ship average ground speed, the real-time energy efficiency evaluation correlation parameter and the ship loading condition.
8. The carbon-strength-based ship real-time energy efficiency evaluation system according to claim 6 or 7, wherein the data acquisition and processing module is used for preprocessing acquired data, eliminating missing data, then carrying out averaging processing on the data to obtain hourly averaged data, directly carrying out hourly statistical averaging on draft data obtained by a ship draft pressure sensor and ship-to-ground speed data obtained by a ship positioning component to obtain ship average draft and ship average-to-ground speed, and subtracting a head-to-tail break point value from whole-ship fuel flow meter data obtained by a whole-ship fuel flow meter to obtain ship average oil consumption.
9. The real-time energy efficiency assessment system for ships based on carbon strength according to claim 6 or 7, characterized in that said navigational speed threshold is 5 knots, said draft loading threshold is 90% of the ship design draft set value, and the ballast draft threshold is 110% of the ship ballast draft set value.
10. The real-time energy efficiency evaluation system for the ship based on the carbon strength according to claim 6 or 7, wherein the real-time energy efficiency index calculation and acquisition module calculates and obtains all boundary lines of the ship average oil consumption evaluation grading under the corresponding loading condition, including a grade A boundary line, a grade B boundary line, a grade C boundary line and a grade D boundary line; the real-time energy efficiency evaluation grading module compares the average oil consumption of the ship with each dividing line of the ship average oil consumption evaluation grading under the corresponding loading condition, carries out A-E grading on the average oil consumption of the ship, and evaluates the real-time energy efficiency condition of the ship when the average oil consumption of the ship reaches the grade C, namely a qualified target.
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| CN117452923A (en) * | 2023-12-22 | 2024-01-26 | 广州奕极机电科技有限公司 | Ship energy-saving control system based on big data analysis |
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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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| 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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