CN107220747A - The analysis method and system of energy loss in a kind of energy consumption system - Google Patents
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Abstract
The invention provides the analysis method and system of energy loss in a kind of energy consumption system, analysis method passes through research that energy consumption system is lost, propose energy loss basic theories, energy loss is classified according to management loss, tangible technological attrition, Invisible technology loss, this method can be used to evaluate the efficiency of energy transmission system, and according to the intensity of variation of accounting, the degree of deterioration, reflect the present situation of energy loss and the energy saving space of three different directions, Customer decision or aid decision are used to help, realizes that saving pipe controlled optimizes.Analysis system includes：Real time data module, historical data module, environment data module, database module, data processing centre, management loss module, optimization link, material loss module, maintenance section, nonphysical wear module, transformation link and terminal display platform.The present invention is that Energy efficiency evaluation and management and control provide new tool by above-mentioned technical proposal.
Description
Technical Field
The invention relates to the technical field of centralized energy-saving management and control, in particular to an analysis method and system for energy loss in an energy consumption system.
Background
The energy consumption system is an integral device consuming energy and is widely applied to daily life or production. In order to improve the energy utilization rate, accelerate the construction of a resource-saving society and promote the comprehensive, coordinated and sustainable development of the economic society, energy-saving regulation and control of an energy consumption system are needed.
In the energy balance analysis method adopted in the traditional energy-saving regulation and control of an energy consumption system, output energy (or called energy source value) is compared with input energy (or called energy effective value) to obtain an energy source value Q1Sum energy effective value Q2And total energy loss value DeltaQ∑And according to the total energy loss value DeltaQ∑And energy source value Q1The ratio of (a) to (b) is calculated to yield the energy utilization ratio, and for the total energy loss value Δ Q∑The system is not analyzed, so that the difficulty in realizing energy-saving management and control of the energy consumption system is increased.
Disclosure of Invention
In order to achieve the above object, the present invention provides the following technical solutions:
a method of analyzing energy loss in an energy consumption system, comprising: a quantification step, quantifying the energy loss of the energy consumption system to obtain the total energy loss value delta Q of the energy consumption system∑Expected value of energy loss Δ Q0Design value of' sum energy loss Delta Q0In which the total energy loss value DeltaQ∑Equal to the energy source value Q1And an energy effective value Q2The difference between the two; obtainObtaining a tangible loss value delta Q of energy lossyAccording to the design value of Δ Q0And desired value Δ Q0The difference of is equal to the intangible loss value Delta QwObtaining an intangible loss value delta QwAccording to total energy loss Δ Q∑Equal to the desired value DeltaQ0"management loss value Δ QgApparent loss value DeltaQyAnd intangible loss value delta QwThe sum is obtained as a management loss value DeltaQg(ii) a A regulation step of managing the loss value Delta QgIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity of the energy-saving.
In the analysis method as described above, preferably, the regulating step specifically includes: according to the management loss value delta QgIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity in the process forms an energy consumption analysis report, and a user makes a regulation and control decision according to the energy consumption analysis report: if the loss value Delta Q is managedgIf the proportion of the energy consumption system is large, the optimization management strategy needs to be adjusted to regulate and control the energy consumption system; if there is a loss Δ QyIf the proportion is large, equipment needs to be overhauled or accessories need to be replaced so as to regulate and control the energy consumption system; if there is no apparent loss of Delta QwThe proportion is large, and new technology needs to be introduced to regulate and control the energy consumption system.
In the analysis method as described above, preferably, the energy consumption system is a heat supply network pipeline.
Another aspect further provides a system for analyzing energy loss in an energy consumption system, including: the system comprises a real-time data module, a historical data module, an environmental data module, a database module, a data processing center, a management loss module, an optimization link, a tangible loss module, a maintenance link, an intangible loss module, a transformation link and a terminal display platform; the real-time data module is connected with the database module and is used for collecting current data of each device in a middle link device of the energy consumption system; the historical data module is connected with the database module and is used for collecting the past data of each device in the intermediate link device; the environment data module is connected with the database module and is used for collecting data causing the deviation of the system from the expected data; the data processing center is connected with the database module and is responsible for calling data from the database module, carrying out corresponding data mining, calculation, analysis and prediction, analyzing the proportion of management loss, tangible loss and intangible loss in the total energy loss of the whole energy consumption system according to the definition of energy loss, and correspondingly transmitting the proportion to the management loss module, the tangible loss module and the intangible loss module; a user enters a corresponding optimization link, a maintenance link and a modification link according to the display result and the loss property of each loss module, wherein the optimization link is used for regulating and controlling the energy consumption system by adjusting an optimization management strategy, the maintenance link is used for regulating and controlling the energy consumption system by overhauling equipment or replacing accessories, and the modification link is used for regulating and controlling the energy consumption system by introducing a new technology; the terminal display platform is a display terminal of the analysis system and is used for checking, counting, printing and reporting system data.
In the analysis system as described above, preferably, the energy consumption analysis system further includes: and the cloud platform is respectively connected with the real-time data module, the historical data module and the environment data module, and is also connected with the database module and used for conveying the data collected by each data module to the database module.
The technical scheme provided by the invention has the following beneficial effects:
the method comprises the steps of analyzing quantized energy loss to obtain a total energy loss value, an expected value and a design value, evaluating an energy-saving control object according to the number (namely a total evaluation method) and the proportion (namely a proportion evaluation method) of management loss, tangible technology loss and intangible technology loss, reflecting the current situation of energy loss and energy-saving spaces in three different directions according to the change degree and the degradation degree of the proportion, and being used for decision making or decision assisting to realize energy-saving control and reduce the realization difficulty of the energy-saving control.
The problem that the energy consumption of the system deviates from the due level due to lack of research on management loss at home and abroad at present is solved. The energy consumption system evaluation system is perfected, the direction, the property and the space of the energy saving potential of the energy consumption system are determined, the management benefits can be quantized, and powerful technical support is provided for energy consumption enterprise decision making. A new energy consumption management theory is used, a closed-loop feedback means is combined, and centralized energy-saving management and control are realized through a remote data platform.
Drawings
FIG. 1 is a block diagram of an energy consumption system according to the present invention;
FIG. 2 is a flow chart of a method for energy loss analysis according to the present invention;
fig. 3 is a block diagram of an energy loss analysis system according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and the detailed description of the embodiments. The following examples are intended to illustrate the invention without limiting its scope.
Referring to fig. 1, the energy consumption system includes an energy source 1, an energy consumption end 2 and an intermediate link device 3, and the intermediate link device 3 is respectively connected to the energy source 1 and the energy consumption end 2 to transmit output energy (or called energy source value) generated by the energy source 1 to the energy consumption end 2. After the transmission of the intermediate link device 3, for example, energy conversion occurs during the transmission process, the input energy (or called energy effective value) received by the energy consumption end 2 is less than the output energy of the energy source 1, and the output energy Q is1And effective energy Q2The difference (or the difference between the energy source value and the energy effective value) of (A) is the total energy loss value Delta Q of the energy consumption system∑. In order to realize energy-saving control, total energy consumption needs to be reducedThe invention provides a method for analyzing energy loss in an energy consumption system, and the method is shown in fig. 2 and comprises the following steps:
a quantization step S1, which quantizes the energy loss of the energy consumption system to obtain the total energy loss value Delta Q of the energy consumption system∑Expected value of energy loss Δ Q0Design value of' sum energy loss Delta Q0In which the total energy loss value DeltaQ∑Equal to the energy source value Q1And an energy effective value Q2The difference between them.
Total energy loss Δ Q of energy consuming system∑Can be obtained by first obtaining the energy source value Q1Sum energy effective value Q2Then according to the formula Δ Q∑＝Q1-Q2Obtaining; the method can also be obtained by a direct measurement and calculation method, which is not limited in this embodiment. Value of energy source Q1Sum energy effective value Q2The obtained can be obtained by measuring, measuring and calculating, theoretical calculating and the like.
Expected value of energy loss Δ Q0"is the minimum limit that the energy consumption system can reach under the conditions of the current advanced technology, that is, the expected value Δ Q of the energy consumption0"is an advanced value of the industry where the energy consumption system is located. For energy consumption systems, the advanced value may be Δ Q under ideal conditions0When new materials, new processes and new methods are applied to reduce energy loss in practical engineering application, the desired value delta Q can be obtained through design calculation under the condition that investors consider the investment scale to be appropriate0"which is a theoretically calculated value.
Design value of energy loss Δ Q0The energy loss value selected for the design of the energy consumption system, i.e. the energy consumption system has an energy loss of delta Q0Design to design the value Δ Q0Greater than desired value Δ Q0And (5) allowing the strain to stand. In general, the design value Δ Q is calculated by engineering design related parameters (such as material, structure, thickness, etc.) and by measuring parameters such as ambient temperature, external surface temperature, etc0The specific calculation formula canReference is made to the corresponding industry standard specification.
Obtaining step S2, obtaining tangible loss value Delta Q of energy lossyAccording to the design value of Δ Q0And desired value Δ Q0The difference of is equal to the intangible loss value Delta QwObtaining an intangible loss value delta QwAccording to total energy loss Δ Q∑Equal to the desired value DeltaQ0"management loss value Δ QgApparent loss value DeltaQyAnd intangible loss value delta QwThe sum is obtained as a management loss value DeltaQg。
In particular, according to the formula Δ Q0＝ΔQ0`+ΔQwObtaining an intangible loss value delta Q of the energy lossw. Intangible loss value delta QwIs derived from intangible wear, representing an increased technical loss due to technological advances in the industry in which energy-consuming systems are located.
Tangible loss of energy loss Δ QyCan be obtained by the formula Δ Qy＝ΔQ0``-ΔQ0Obtained,. DELTA.Q0"indicates that after the energy consumption system is used for a period of time, the energy consumption of the energy consumption system is relative to the designed value delta Q due to the self-reason (such as aging) of the equipment0Changed value, i.e. the energy loss of the energy consuming system after a period of use, relative to the design value Δ Q0Increase to Δ Q0"so, the increase in loss due to this is called the tangible loss, denoted Δ QyIn other words, tangible loss Δ QyIs due to tangible wear, which represents an increased technical loss of the energy consuming system over historical time. In practical engineering application, the tangible loss delta Q can be obtained by adopting a direct measurement calculation methody。
The sum of the intangible loss and the tangible loss of the energy loss is called the technical loss, i.e. the intangible loss value delta QwAnd tangible loss value Δ QyThe sum is called the technical loss value delta Qj. The loss caused by inherent form limitation or the limitation of energy storage, conversion and motion principles is called technical loss.
Management loss value delta Q of energy lossgCan be represented by the formula Δ Q∑＝ΔQ0`+ΔQw+ΔQy+ΔQgAnd (4) obtaining. Managing the loss Δ Q if the energy consuming system is installed and operating exactly as designedgIs 0, the energy loss is equal to the technical loss, at the design value Δ Q0。
A control step S3, according to the management loss value delta QgIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity of the energy-saving.
Specifically, the loss value Δ Q is managed according togIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity in the process forms an energy consumption analysis report, and a user makes a regulation and control decision according to the energy consumption analysis report: if the loss value Delta Q is managedgIf the proportion of the energy consumption system is large, the optimization management strategy needs to be adjusted to regulate and control the energy consumption system; if there is a loss Δ QyIf the proportion is large, equipment needs to be overhauled or accessories need to be replaced so as to regulate and control the energy consumption system; if there is no apparent loss of Delta QwThe proportion is large, and new technology needs to be introduced to regulate and control the energy consumption system.
The method comprises the steps of analyzing quantized energy loss to obtain a total energy loss value, an expected value and a design value, evaluating an energy-saving control object according to management loss, tangible technology loss, the quantity of intangible technology loss (namely a total quantity evaluation method) and an occupation ratio (namely a proportion evaluation method), reflecting the current situation of energy loss and energy-saving spaces in three different directions according to the change degree and the degradation degree of the occupation ratio, and being used for decision making or decision assisting to realize energy-saving control. The energy loss analysis method provided by the invention is used for solving the problem that the energy consumption of the system deviates from the due level due to lack of research on management loss at home and abroad at present. The method is applied to improve an energy consumption system evaluation system, and the direction, the property and the space of the energy saving potential of the energy consumption system are determined, so that powerful technical support is provided for energy consumption enterprise decision making.
As a preferred embodiment, the energy loss analysis method described above can also implement continuously improved functions through closed-loop management after the decision is executed. The energy loss value after condition change is calculated by taking result data after regulation and control execution as disturbance factors of the system according to different classes of data, and the continuously improved function is realized through the closed-loop design. In a closed-loop management process, as a decision maker, the corresponding link can be executed according to the previous energy-saving analysis report, so that the corresponding loss value can be changed, the effectiveness of the executing link is judged according to the change condition of the loss value, and the corresponding link is executed for multiple times until the corresponding loss value reaches an expected target value.
Taking an energy consumption system as a centralized heating system as an example for explanation, the energy source 1 is a heat source, the energy consumption end 2 is a heat consumer, the intermediate link device 3 is a heating pipe network, and the total energy loss can be divided into: the heat dissipation loss, the water replenishing and heat consumption loss, the pipe network imbalance heat loss, the heat exchange loss, the power consumption loss and the like can be controlled through the intermediate link device corresponding to each loss to complete energy-saving management and control. In fact, from the viewpoint of energy saving management, these losses exemplified above can be regarded as being composed of technical losses and management losses. For example, the heat dissipation loss of a pipeline is partially determined by the characteristics of the insulating material and the insulating mode adopted by the design, and the technical loss has technical objectivity and is often called as a design value. The following explains the energy loss analysis method by taking the heat supply pipe network pipeline corresponding to the heat dissipation loss as an example:
1) a formula delta Q provided by a method for testing heat dissipation loss and evaluating heat insulation effect of a heat insulation structure of a heat supply pipeline (CJ/T140-2001) is adopted∑＝0.278G(c1t1-c2t2) Calculating to obtain the total energy loss value delta Q of the heat supply pipe network pipeline∑；
Wherein G is the mass flow of hot water, and the unit is kg/h; c. C1，c2Network management of heat supply pipe at side according to hot water temperatureThe specific heat capacity of hot water at the inlet and the outlet is kJ/(kg ∙ K); t is t1、t2The measured hot water temperature of the inlet and outlet of the heat supply pipe network pipeline is K, and the heat supply pipe network pipeline corresponding to the formula is a hot water medium heat supply pipe network pipeline.
2) Searching the design value and industry advanced value of the pipeline of the heat supply pipe network to obtain the design value delta Q of the heat dissipation loss0And expected value of heat dissipation loss Δ Q0All through Delta Qw＝ΔQ0-ΔQ0Calculating to obtain an intangible loss value delta Qw；
Design value Δ Q0The design value delta Q can also be calculated by related parameters (such as heat insulation materials, thickness, structures and the like) of engineering design and parameters such as environment temperature, outer surface temperature and the like obtained by measurement0The specific calculation formula can be referred to the corresponding industry standard specification.
3) According to the environmental conditions and service life of the energy consumption system (namely the heat supply pipe network pipeline), the design value delta Q of the heat dissipation loss is calculated through sampling measurement0' after the heat supply pipe network pipeline is used for a period of time, the heat dissipation loss of the pipeline is enabled to be relative to the designed value delta Q due to the natural aging of the heat insulation material used by the pipeline0Increase to Δ Q0"the design value Δ Q0"may be referred to as the current design value, design value Δ Q0Referred to as initial design value), by Δ Qy＝ΔQ0``-ΔQ0Calculating to obtain a tangible loss value delta Qy；
In practical engineering application, the tangible loss delta Q can be obtained by using a measuring meter algorithmyThe adopted methods comprise a surface temperature method, a temperature difference method, a heat flow meter method and the like, and formulas involved in the methods can refer to the standard specification GB/T8175-2008 apparatus and pipeline heat insulation design guide rules.
4) By Delta Q∑＝ΔQ0`+ΔQw+ΔQy+ΔQgCalculating to obtain a management loss value delta Qg；
5) Combining historical dataAnalyzing the management loss Delta Q in the whole systemgTangible technical loss Δ QyIntangible technical loss delta QwThe quantity and the proportion of the energy consumption are reflected, the current situation of energy consumption, the change process in different time periods and energy-saving spaces in three different directions are reflected, and an energy consumption analysis report is obtained;
6) and the user completes reasonable decision according to the energy consumption analysis report.
It should be noted that, for those skilled in the art, the method for analyzing the heat dissipation loss of the heat supply pipe network pipeline is also applicable to intermediate link devices corresponding to other losses of the central heating system, and is also applicable to other energy consumption systems, and this embodiment does not limit this.
The present invention also provides an energy loss analysis system, as shown in fig. 3, which includes: the system comprises a real-time data module, a historical data module, an environmental data module, a database module, a data processing center, a management loss module, an optimization link, a tangible loss module, a maintenance link, an intangible loss module, a transformation link and a terminal display platform.
And the real-time data module is connected with the database module and is used for collecting the current data of each device in the intermediate link device of the energy consumption system. The historical data module is connected with the database module and used for collecting the past data of each device in the intermediate link device. The environment data module is connected with the database module and used for collecting data causing deviation of the system from expectations, the data can be obtained through presetting, manual entry and external data interfaces and comprise social data and disturbance factors, and the social data can be industry advanced values, expectation values and basic data in a new equipment environment. The disturbance factor is the result data after the energy-saving regulation and control is executed, namely the result data after the regulation and control is used as the disturbance factor of the system according to different types of the data.
The data processing center is connected with the database module, is the core of the whole system, is responsible for calling data from the database module, carries out corresponding data mining, calculation, analysis and prediction, analyzes the proportion of management loss, tangible loss and non-tangible loss in the whole system in total energy loss according to the definition of the energy loss, and correspondingly transmits the proportion to the management loss module, the tangible loss module and the intangible loss module. The user enters the corresponding optimization, maintenance, and modification execution links according to the display result and the loss property of each loss module, and for the description about entering the corresponding optimization, maintenance, and modification execution links according to the loss property, reference may be made to the content in step S3, which is not described in detail here. Each execution link is a subsystem of the system, is triggered by decision after receiving manual input of adjustment data, calculates an energy loss value after condition change by using the executed result data as disturbance data of the system according to different types of the data, and realizes a continuously improved function through the closed-loop design. The terminal display platform is a display terminal of the system and is used for checking, counting, printing and reporting system data.
In order to facilitate remote control, the energy consumption analysis system further comprises: the cloud platform (or called as remote data platform) is respectively connected with the tangible loss data module, the intangible loss data module and the management loss data module, and is also connected with the database module and used for conveying the data collected by the loss data modules to the database module.
In summary, the invention analyzes the quantized energy loss to obtain the total energy loss value, the expected value and the design value, then evaluates the energy-saving control object according to the management loss, the tangible technology loss, the quantity of the intangible technology loss (namely, a total quantity evaluation method) and the occupation ratio (namely, a proportion evaluation method), and reflects the current situation of the energy loss and the energy-saving spaces in three different directions according to the change degree and the deterioration degree of the occupation ratio for decision or auxiliary decision, thereby realizing the energy-saving control and reducing the realization difficulty of the energy-saving control.
The problem that the energy consumption of the system deviates from the due level due to lack of research on management loss at home and abroad at present is solved. The energy consumption system evaluation system is perfected, the direction, the property and the space of the energy saving potential of the energy consumption system are determined, the management benefits can be quantized, and powerful technical support is provided for energy consumption enterprise decision making. A new energy consumption management theory is used, a closed-loop feedback means is combined, and centralized energy-saving management and control are realized through a remote data platform.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (5)
1. A method for analyzing energy loss in an energy consumption system, the method comprising:
a quantification step, quantifying the energy loss of the energy consumption system to obtain the total energy loss value delta Q of the energy consumption system∑Expected value of energy loss Δ Q0Design value of' sum energy loss Delta Q0In which the total energy loss value DeltaQ∑Equal to the energy source value Q1And an energy effective value Q2The difference between the two;
an obtaining step of obtaining a tangible loss value delta of energy lossQyAccording to the design value of Δ Q0And desired value Δ Q0The difference of is equal to the intangible loss value Delta QwObtaining an intangible loss value delta QwAccording to total energy loss Δ Q∑Equal to the desired value DeltaQ0"management loss value Δ QgApparent loss value DeltaQyAnd intangible loss value delta QwThe sum is obtained as a management loss value DeltaQg；
A regulation step of managing the loss value Delta QgIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity of the energy-saving.
2. The analytical method of claim 1, wherein the step of regulating specifically comprises:
according to the management loss value delta QgIntangible loss value delta QwApparent loss value DeltaQyAt total energy loss Δ Q∑The specific gravity in the process forms an energy consumption analysis report, and a user makes a regulation and control decision according to the energy consumption analysis report: if the loss value Delta Q is managedgIf the proportion of the energy consumption system is large, the optimization management strategy needs to be adjusted to regulate and control the energy consumption system; if there is a loss Δ QyIf the proportion is large, equipment needs to be overhauled or accessories need to be replaced so as to regulate and control the energy consumption system; if there is no apparent loss of Delta QwThe proportion is large, and new technology needs to be introduced to regulate and control the energy consumption system.
3. The method for analyzing energy loss in an energy consumption system according to claim 2, wherein the energy consumption system is a heat supply pipe network pipeline.
4. An analysis system for energy losses in an energy consumption system, the analysis system comprising: the system comprises a real-time data module, a historical data module, an environmental data module, a database module, a data processing center, a management loss module, an optimization link, a tangible loss module, a maintenance link, an intangible loss module, a transformation link and a terminal display platform; wherein,
the real-time data module is connected with the database module and is used for collecting current data of each device in the middle link device of the energy consumption system;
the historical data module is connected with the database module and is used for collecting the past data of each device in the intermediate link device;
the environment data module is connected with the database module and is used for collecting data causing the deviation of the system from the expected data;
the data processing center is connected with the database module and is responsible for calling data from the database module, carrying out corresponding data mining, calculation, analysis and prediction, analyzing the proportion of management loss, tangible loss and intangible loss in the total energy loss of the whole energy consumption system according to the definition of energy loss, and correspondingly transmitting the proportion to the management loss module, the tangible loss module and the intangible loss module; a user enters a corresponding optimization link, a maintenance link and a modification link according to the display result and the loss property of each loss module, wherein the optimization link is used for regulating and controlling the energy consumption system by adjusting an optimization management strategy, the maintenance link is used for regulating and controlling the energy consumption system by overhauling equipment or replacing accessories, and the modification link is used for regulating and controlling the energy consumption system by introducing a new technology;
the terminal display platform is a display terminal of the analysis system and is used for checking, counting, printing and reporting system data.
5. The energy loss analysis system of claim 4, further comprising: and the cloud platform is respectively connected with the real-time data module, the historical data module and the environment data module, and is also connected with the database module and used for conveying the data collected by each data module to the database module.
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