CN115986821A

CN115986821A - Intelligent monitoring and analyzing system based on comprehensive energy

Info

Publication number: CN115986821A
Application number: CN202211724644.6A
Authority: CN
Inventors: 汉京晓; 孔祥飞; 吴佳睿
Original assignee: China Railway Construction Group Electromechanical Installation Co ltd; BEIJING DISTRICT HEATING GROUP; Hebei University of Technology
Current assignee: China Railway Construction Group Electromechanical Installation Co ltd; BEIJING DISTRICT HEATING GROUP; Hebei University of Technology
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-18
Anticipated expiration: 2042-12-30
Also published as: CN115986821B

Abstract

The invention relates to the technical field of power supply coordination, in particular to an intelligent monitoring and analyzing system based on comprehensive energy, which comprises a photovoltaic power generation set, a fuel power generation set, a monitoring unit, a power storage set and a coordination control unit, wherein the coordination control unit is used for judging the power consumption level of a user side according to the analysis of power consumption data of the user side so as to determine a preliminary power supply scheme, and determining the starting time and the power generation power of the fuel power generation set according to the actual stored electric quantity of the power storage set in the system and the power consumption trend of the user side so as to provide electric energy for the user side, so that the shortage or waste of electric energy caused by the error between the electric energy required by the user side and the power generation power of the power generation side is avoided, the power station can be effectively ensured to meet the power consumption requirement of the user side, and the energy-saving and environmental-protection characteristics of the invention are effectively ensured by fully utilizing the clean energy advantages of the photovoltaic power station.

Description

Intelligent monitoring and analyzing system based on comprehensive energy

Technical Field

The invention relates to the technical field of power supply coordination, in particular to an intelligent monitoring and analyzing system based on comprehensive energy.

Background

Photovoltaic power generation refers to a power generation mode of directly converting solar radiation into electric energy, and photovoltaic power generation is the mainstream of solar power generation at present, so solar power generation is photovoltaic power generation at present. The distributed power generation is a photovoltaic power generation facility which is built near a user site, the operation mode is mainly self-used by a user side, redundant electric quantity is on line, and the balance adjustment of a power distribution system is characteristic. The distributed power generation follows the original measurement of local conditions, cleanness, high efficiency, scattered layout and near utilization, fully utilizes local solar energy resources, and replaces and reduces fossil energy consumption. However, since photovoltaic power generation is directly derived from solar energy, the photovoltaic power generation is inevitably affected by the illumination of sunlight to present instability and periodicity, and therefore, photovoltaic power generation cannot be used as a single direct power supply source and is generally used as a delayed power supply source together with an electric storage battery.

Chinese patent publication No. CN106786753B discloses a system of multi-user regional energy internet and an adjusting method thereof, in the technical scheme, a regional energy network is constructed based on a power grid, a heat supply network and a cold supply network, and multi-user regional energy network self-adjustment is realized through cooperative complementation between the regional energy network and an outside-region urban energy network and cooperative complementation between regional energy networks, and cooperative complementation between the regional energy network and energy storage. And the operation optimization of the regional energy network is realized through a meteorological prediction model, a multi-user energy demand prediction model, a renewable energy prediction model and a regional energy network optimization model. Therefore, the system of the multi-user regional energy Internet and the adjusting method thereof have the following problems: according to the technical scheme, the dispatching value of the urban energy network outside the area is the energy type which is not controlled by the area, if energy supply needs to be carried out by means of energy input outside the area, the problem of energy shortage caused by the fact that the dispatching value of the urban energy network outside the area cannot reach the expected value possibly exists, stable supply of energy in the area cannot be guaranteed, meanwhile, although the prediction level of energy utilization can be given according to historical data, in practical application, the trend of actual energy demand is not completely consistent with the trend of the historical data, therefore, on one hand, an energy supply station which can realize stable supply in the area and is provided with extra energy needs to be found to enable energy in the area to realize stable supply, so that the energy supply and the demand are matched to avoid energy waste, and meanwhile, an energy demand analysis system for monitoring in real time is adopted to analyze the actual demand in the area, and energy supply deviation caused by energy supply only according to the historical data can be avoided.

Disclosure of Invention

Therefore, the invention provides an intelligent monitoring and analyzing system based on comprehensive energy, which is used for overcoming the problem of energy waste caused by insufficient energy supply or excessive energy supply due to deviation of an energy predicted value and an actual value in the process of coordinately supplying regional energy according to historical energy data in the prior art.

In order to achieve the above object, the present invention provides an intelligent monitoring and analyzing system based on comprehensive energy, comprising:

the photovoltaic power generation set is used for converting solar energy into electric energy through the photovoltaic panel so as to provide electric energy for the user side;

the fuel power generation set is connected with the electric energy input port of the user end and used for converting the heat energy generated by fuel combustion into electric energy to provide electric energy for the user end;

the monitoring unit is connected with the photovoltaic power generation set and the fuel power generation set and used for acquiring historical electric energy consumption data of the user end, electric energy demand data of the user end, electric energy capacity data of the photovoltaic power generation set and electric energy capacity data of the fuel power generation set;

the power storage group is respectively connected with the photovoltaic power generation group, the fuel power generation group and the monitoring unit and used for storing the electric energy generated by the photovoltaic power generation group and the fuel power generation group and transmitting the stored electric energy to the user side;

and the coordination control unit is respectively connected with the photovoltaic power generation group, the fuel power generation group, the monitoring unit and the power storage group, is used for analyzing the power consumption demand level of a user end according to the historical electric energy consumption data so as to determine a preliminary power supply scheme, determines the starting time of the fuel power generation group according to the actual stored electric quantity of the power storage group in the system and the electric energy consumption of the user end when the power storage group is adopted for supplying power to the user end, and determines the power generation power of the fuel power generation group according to the electric energy consumption trend of the user end when the fuel power generation group is started for supplying power to the user end.

Further, the fuel power generation set comprises a plurality of single-type combustion units arranged in parallel and a plurality of thermoelectric generation units connected with each single-type combustion unit, wherein a single-type combustion unit is used for combusting fuel of a single fuel type to provide heat energy, a single thermoelectric generation unit is used for converting the heat energy generated by the corresponding single-type combustion unit into electric energy, and the fuel comprises: coal, oil, natural gas, coal gas, and biomass fuels.

Further, the monitoring unit comprises a data storage module for storing the historical electric energy consumption data and the data detected by the data detection module in real time, and a data detection module for detecting the electric energy consumption of the user terminal, the electric energy capacity of the photovoltaic power generation set, the electric energy capacity of the fuel power generation set and the electric energy storage amount of the electric storage set, wherein the data storage module is respectively connected with the data detection module and the coordination control unit, and the data detection module is respectively connected with the photovoltaic power generation set, the fuel power generation set, the electric storage set and the electric energy input port of the user terminal.

Further, the coordination control unit forms an electric energy consumption statistical function P (t) according to the historical electric energy consumption data and determines the electric energy demand water of the user end by analyzing the P (t)Setting an electric energy consumption statistical function P (t) = PT which is averaged to match a primary power supply scheme for a user terminal, wherein t is electric energy consumption data acquisition time of the user terminal, PT is total amount of electric energy consumed by the user terminal at the electric energy consumption data acquisition time t, the coordination control unit is provided with a first electric energy demand level electric energy standard PT1 and a second electric energy demand level electric energy standard PT2, wherein PT1 is more than 0 and less than PT2, the coordination control unit records the total amount of electric energy consumption of the user terminal in the ith preset statistical period as Pt i, and Pt i = P (t is set _i+1 )-P(t _i ) Wherein, t _i For the start time, t, of the ith predetermined statistical period _i+1 Is the starting time of the (i + 1) th preset statistical period, i is an integer,

when the Pt i is less than or equal to PT1, the coordination control unit judges that the ith preset statistical period is in a first electric energy demand level and adopts a first power supply scheme, and the coordination control unit controls the power storage unit to be started so as to supply power to the user side and controls the fuel power generation unit to be closed;

when PT1 is larger than Pt i and smaller than or equal to PT2, the coordination control unit judges that the ith preset statistical period is in a second electric energy demand level and adopts a second power supply scheme, the coordination control unit controls the power storage unit to supply power to the user side and determines whether to start a fuel power generation unit to supply power to the power storage unit according to the power generation power of the photovoltaic power generation unit so that the power storage unit stores the electric energy generated by the fuel power generation unit;

and when Pt i is greater than PT2, the coordination control unit judges that the ith preset statistical period is at a third electric energy demand level and adopts a third power supply scheme, and the coordination control unit controls the fuel power generation group to supply power to the user side.

Further, the coordination control unit determines whether the electricity storage group has the power supply capacity according to the electricity stored in the electricity storage group under the first power supply condition, the coordination control unit is provided with an electricity storage group electric energy storage percentage standard E, wherein, E is more than 10% and less than 30%, the coordination control unit records the actual value of the electricity stored in the electricity storage group as qa, the maximum stored electricity in the electricity storage group as qz, the coordination control unit records the electricity storage group electric energy storage percentage as E, and sets E = qa/qz × 100%,

when E is larger than or equal to E, the coordination control unit judges that the reserve electric quantity of the electricity storage group meets the standard and the electricity storage group has power supply capacity, and controls the electricity storage group to supply power to the user side;

when E is less than E, the coordination control unit judges that the reserve electric quantity of the electricity storage group is lower than a standard, the electricity storage group does not have power supply capacity, and the coordination control unit controls the fuel power generation group to supply power to the user side by adopting the third power supply scheme;

the first power supply condition is that the coordination control unit adopts the first power supply scheme and the power storage group supplies power to the user terminal.

Further, the coordination control unit calculates an electricity load parameter of a user terminal according to the electricity consumption of the user terminal and the electricity storage amount of the photovoltaic power generation group under a first power supply adjustment condition, and determines the opening waiting time or the closing waiting time of the fuel power generation group according to the electricity load parameter, the coordination control unit is provided with a first electricity load reference standard A1 and a second electricity load reference standard A2, wherein A1 is more than 0.5 and less than 1 and less than A2, the monitoring unit detects the electricity amount qb stored to the electricity storage group by the photovoltaic power generation group in a preset detection period TB and the electricity consumption qc of the user terminal in the preset detection period TB, the coordination control unit records the electricity load parameter as a, and sets a = qb/qc,

when a is less than or equal to A1, the coordination control unit judges that the power utilization load parameter is lower than a first power utilization load reference standard, the coordination control unit controls the fuel power generation set to be started after the starting waiting time delta ta so as to supply power to the user side, controls the power storage set to be stopped after the fuel power generation set is started so as to supply power to the user side, and sets delta ta =0;

when A1 is more than a and less than or equal to A2, the coordination control unit judges that the power utilization load parameter meets a first power utilization load reference standard, the coordination control unit controls the fuel power generation set to be started after the starting waiting time delta ta so as to supply power to the user side, and controls the power storage set to be stopped after the fuel power generation set is started so as to supply power to the user side, and delta ta = [0.5 qa/(qc-qb) ] × TB is set, wherein TB is more than 1min and less than 60min;

when a is greater than A2, the coordination control unit judges that the electricity load parameter meets a second electricity load reference standard, the coordination control unit controls the electricity storage group to supply electricity to the user end and controls the fuel electricity generation group to keep closing within a closing waiting time length delta TB, and delta TB is set to be = [0.3 qa/(qb-qc) ] × TB;

the first power supply adjustment condition is that the power storage group supplies power to the user side and E is larger than or equal to E.

Further, the coordination control unit determines a threshold adjustment mode aiming at the opening waiting time or the closing waiting time according to the current electric energy demand level of the system under the first power supply adjustment condition so as to enable the power supply starting time or the power supply ending time of the fuel power generation set to meet the electric energy demand of a user terminal, the coordination control unit is provided with a first electric energy demand level adjustment parameter alpha 1, a second electric energy demand level adjustment parameter alpha 2 and a third electric energy demand level adjustment parameter alpha 3, wherein 0 < alpha 3 < 0.6 < alpha 2 < 1 < alpha 1,

when the system is at a first electric energy demand level, the coordination control unit adjusts the threshold value by adopting a first electric energy demand level adjustment parameter alpha 1, records the adjusted opening waiting time threshold value as delta TA and the adjusted closing waiting time threshold value as delta TB, and sets delta TA = delta TA0 × alpha 1 and delta TB = delta TB0 × alpha 1, wherein delta TA0 is a preset basic opening waiting time threshold value, and delta TB0 is a preset basic closing waiting time threshold value;

when the system is at a second electric energy demand level, the coordination control unit adjusts the waiting time threshold value by adopting a second electric energy demand level adjusting parameter alpha 2, and sets delta TA = delta TA0 × alpha 2 and delta TB = delta TB0 × alpha 2;

when the system is at a third electric energy demand level, the coordination control unit adjusts the waiting time threshold value by using a third electric energy demand level adjustment parameter α 3, and sets Δ TA = Δ TA0 × α 3 and Δ TB = Δ TB0 × α 3.

Further, the coordination control unit compares the opening waiting time length delta TA with a corresponding opening waiting time length threshold value delta TA under a first power supply correction condition, compares the closing waiting time length delta TB with a corresponding closing waiting time length threshold value delta TB to determine an adjustment mode aiming at the power supply of the fuel power generation set,

when delta TA is less than or equal to delta TA, the coordination control unit judges that the starting waiting time meets the threshold standard, and the coordination control unit controls the fuel power generation set to be started for power supply after the starting waiting time delta TA;

when delta TA is larger than delta TA, the coordination control unit judges that the starting waiting time length exceeds a threshold value standard, and the coordination control unit controls the fuel power generation set to be started for power supply after the starting waiting time length delta TA;

when the delta TB is less than or equal to the delta TB, the coordination control unit judges that the closing waiting time length meets the threshold value standard, and the coordination control unit controls the fuel power generation set to be kept closed within the closing waiting time length delta TB;

when delta TB is greater than delta TB, the coordination control unit judges that the closing waiting time length meets the threshold value standard, and controls the fuel power generation set to be kept closed within the closing waiting time length delta TB;

the first power supply correction condition is that the coordinated control unit completes the calculation of Δ TA and Δ TB and the adjustment of Δ TA and Δ TB.

Further, the coordination control unit determines whether to start the fuel generation set to supply power to the electricity storage set according to the generated power of the photovoltaic generation set under a second power supply condition, the coordination control unit is provided with a generated power standard F1, wherein F1 is greater than 0, the coordination control unit records the generated power of the photovoltaic generation set detected by the monitoring unit as fg,

when fg is less than F1, the coordination control unit judges that the power generation power of the photovoltaic power generation set is lower than the standard and the power generation amount of the photovoltaic power generation set is lower than the standard, and the coordination control unit controls the fuel power generation set to be started to supply power to the power storage set;

when fg is larger than or equal to F1, the coordination control unit judges that the power generation power of the photovoltaic power generation set meets the standard and the power generation amount of the photovoltaic power generation set meets the standard, and the coordination control unit controls the fuel power generation set to stop supplying power to the power storage set and controls the photovoltaic power generation set to supply power to the power storage set;

the second power supply condition is that the coordination control unit adopts a second power supply scheme and the power storage group supplies power to the user terminal.

Further, the coordination control unit determines an electric energy consumption trend of the user terminal under a third power supply condition according to an electric energy consumption statistical function P (t) to adjust the generated power of the fuel power generation set, the coordination control unit is provided with a first trend comparison parameter D1, a second trend comparison parameter D2, a first power adjustment parameter β 1, a second power adjustment parameter β 2 and a third power adjustment parameter β 3, wherein D1 is greater than 0 and less than D2, β 1 is greater than 0 and less than 1 and less than β 2 and β 3, the coordination control unit records the electric energy consumption trend of the user terminal as D (t), sets D (t) as a derivative function of P (t), D (t) = P' (t), and the coordination control unit records the electric energy consumption trend of the user terminal at t as D, D is greater than or equal to 0,

when D is more than or equal to 0 and less than D1, the coordination control unit judges that the electric energy consumption of the user side is in a first increasing interval and adjusts the generated power of the fuel power generation set to fr, and fr = fr0 × β 1 and fr0 are set as the preset generated power of the fuel power generation set;

when D is more than or equal to D1 and less than D2, the coordination control unit judges that the electric energy consumption of the user side is in a second increase interval and adjusts the generated power of the fuel power generation set to fr, and fr = fr0 × β 2 is set;

when D is larger than or equal to D2, the coordination control unit judges that the electric energy consumption of the user side is in a third increasing interval and adjusts the generated power of the fuel power generation set to fr, and fr = fr0 × β 3 is set;

the third power supply condition is that the fuel power generation set supplies power to the user terminal.

Compared with the prior art, the photovoltaic power generation set, the fuel power generation set, the monitoring unit, the power storage set and the coordination control unit are arranged in the power station, the power demand level of the user side is judged according to the analysis of the power consumption data of the user side through the coordination control unit to determine a primary power supply scheme, the starting time and the power generation power of the fuel power generation set are determined according to the actual stored electric quantity of the power storage set in the system, the electric energy consumption of the user side and the electric energy consumption trend of the user side to provide electric energy for the user side, the shortage or the waste of electric energy caused by the error between the electric energy demanded by the user side and the electric energy generated by the power generation side is avoided, the power station can be effectively ensured to meet the power demand of the user side, and meanwhile, the energy-saving and environment-friendly characteristics of the photovoltaic power generation set are effectively ensured by fully utilizing the clean energy advantages of the photovoltaic power station.

Furthermore, the fuel power generation set comprises a plurality of single-type combustion units and thermoelectric generation units for providing electric energy, and environment-friendly biomass fuel is adopted as the combustion fuel of the fuel power generation set, so that the technical scheme of the invention has the advantage of environmental protection, and the energy capacity of the electric energy has energy supply of random cutting due to the fact that the combustion units and the thermoelectric generation units in the fuel power generation set are connected in parallel, the power generation power of the combustion power generation set can be adjusted by controlling the work of the single combustion unit, and the effectiveness and the practicability of the system for intelligently monitoring and analyzing the power based on comprehensive energy can be adjusted according to the power utilization condition of a user side.

Furthermore, the monitoring unit comprises a data storage module for storing the historical electric energy consumption data and the data detected by the data detection module in real time, and a data detection module for detecting the electric energy consumption of the user terminal, the electric energy capacity of the photovoltaic power generation group, the electric energy capacity of the fuel power generation group and the electric energy storage amount of the electric energy storage group, the data storage module is arranged to ensure that the historical data can be effectively recorded, the data detection module is arranged to detect the current electricity utilization condition of the user terminal and the generated energy of the photovoltaic power generation group and the fuel power generation group of the power generation terminal and detect the electric energy storage condition of the electric energy storage group, and the invention effectively ensures that the generated energy can be adjusted according to the actual electric energy consumption state of the user terminal to ensure the effective utilization of the generated electric energy.

Furthermore, the coordination control unit forms an electric energy consumption statistical function P (t) according to the historical electric energy consumption data statistics, determines the electric energy demand level of the user side by analyzing the P (t), preliminarily obtains the electric energy consumption level of the user side in a preset statistical period by analyzing the electric energy consumption condition of the user side in the historical data, effectively uses the historical data as a reference of generated energy to preliminarily plan which power generation mode is adopted for generating power, only uses the power storage group for supplying power to the user side in the preset statistical period with less electric energy consumption, and uses the photovoltaic power generation group for storing power, thereby ensuring the effective utilization of clean energy by the invention.

Furthermore, the coordination control unit of the invention determines whether the power storage group has power supply capability according to the electric quantity stored in the power storage group, if the electric quantity in the power storage group is lower than the standard, the power storage group may not provide the required electric energy for the user terminal, and the power supply capability is not provided when the electric energy demand of the user is increased, so that by detecting the electric quantity stored in the power storage group, on one hand, the power storage group can be ensured to effectively provide the electric energy within a certain time when providing the electric energy for the user terminal, and on the other hand, by detecting, the scheme of providing fuel power generation for the power storage group which does not use the stored electricity for power supply is provided, thereby effectively ensuring the electric energy utilization of the stored electricity, avoiding the power supply amount from exceeding the use level of the user terminal, and simultaneously ensuring that the power supply terminal has stable electric energy supply.

Furthermore, the coordination control unit determines the power load parameter of the user end according to the power consumption of the user end and the power storage amount of the photovoltaic power generation group so as to determine the starting time or the closing time of the fuel power generation group, and by detecting the power generation amount of the photovoltaic power generation group and the power consumption of the user end, when the power stored by the power storage group is used for supplying power, the power consumption of the power storage group can be predicted, and the power supply starting time of the fuel power generation group is determined according to the power difference between the power storage and the power supply, so that the stability of the power supply of the user end can be ensured when the power storage group is used for supplying power so that the power supply of the user end can be switched from the power storage group to the fuel power generation group by presetting the starting of the fuel power generation group to supply the power supply when the power storage electric energy is consumed to a set value.

Furthermore, the coordination control unit determines a threshold adjustment mode aiming at the opening waiting time or the closing waiting time according to the electric energy demand level of the preset statistical period corresponding to the current system, so that the power generation starting time or the power generation ending time of the fuel power generation group meets the electric energy demand of the user terminal, the coordination control unit compares the calculated opening waiting time delta TA or the calculated closing waiting time delta TB with the corresponding opening waiting time threshold delta TA or the corresponding closing waiting time threshold delta TB to determine an adjustment mode aiming at the power supply of the fuel power generation group, the opening waiting time or the closing waiting time is determined by judging the current electric energy demand level, the electric energy supply time of the power storage group can be changed correspondingly due to the fact that the difference of the electric energy consumption values of the user terminals corresponding to different electric energy demand levels is large, and at the moment, the situation that the electric energy supply of the fuel power generation group is still in the power generation waiting stage when the electric energy cannot be supplied by the preset value of the power storage group can be avoided by adjusting the opening waiting time or the closing waiting time, and the situation that the electric energy supply of the electric energy supply to the user terminal is interrupted can be further ensured.

Furthermore, the coordination control unit determines whether to start the fuel power generation set to generate power according to the power generation power fg of the photovoltaic power generation set, so that the power storage set stores the electric energy generated by the fuel power generation set, judges whether the photovoltaic power generation set can provide enough electric energy by judging the power generation power of the photovoltaic power generation set, and supplements and stores the electric energy by adopting the fuel power generation set when the power generation power of the photovoltaic power generation set is lower than the standard, thereby effectively ensuring the sufficient electric energy storage, further ensuring that the technical scheme of the invention can provide the required electric energy for the user terminal, and avoiding the situation that the power supply requirement is not satisfied due to insufficient electric energy.

Furthermore, the method and the device determine the electric energy consumption trend of the user side through the electric energy consumption statistical function P (t) to adjust the power generation power of the fuel power generation set, judge the electric energy consumption trend of the user side through the analysis of the electric energy consumption of the user side, and adjust the power generation power of the fuel power generation set, thereby effectively ensuring that the technical scheme of the invention can effectively identify the electric energy value of the demand quantity corresponding to the electric energy demand of the user side, ensuring the effective utilization of power generation and avoiding the energy waste caused by excessive power generation.

Drawings

FIG. 1 is a schematic structural diagram of an intelligent monitoring and analyzing system based on comprehensive energy sources according to the present invention;

FIG. 2 is a schematic structural diagram of a fuel power generation stack according to an embodiment of the present invention;

FIG. 3 is a schematic view of a monitoring unit according to the present invention;

FIG. 4 is a power supply logic diagram of the intelligent monitoring and analyzing system based on comprehensive energy sources;

FIG. 5 is a logic diagram of the feedback adjustment of the intelligent monitoring and analyzing system based on comprehensive energy.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in conjunction with the following examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, which is a schematic structural diagram of an intelligent monitoring and analyzing system based on integrated energy according to the present invention, the present invention provides an intelligent monitoring and analyzing system based on integrated energy, including:

the fuel power generation set is connected with the electric energy input port of the user end and is used for converting the heat energy generated by fuel combustion into electric energy so as to provide electric energy for the user end;

According to the invention, the photovoltaic power generation set, the fuel power generation set, the monitoring unit, the power storage set and the coordination control unit are arranged in the power station, the coordination control unit is used for judging the power consumption level of the user end according to the analysis of the power consumption data of the user end so as to determine a preliminary power supply scheme, and the starting time and the power generation power of the fuel power generation set are determined according to the actual stored electric quantity of the power storage set in the system, the electric energy consumption of the user end and the electric energy consumption trend of the user end so as to provide electric energy for the user end, so that the shortage of electric energy or the waste of electric energy caused by the error between the electric energy required by the user end and the power generation electric quantity of the power generation end is avoided, the power station can meet the power consumption requirement of the user end effectively, and the energy-saving and environmental-protection characteristics of the photovoltaic power station are effectively ensured by fully utilizing the clean energy advantages of the photovoltaic power station.

Referring to fig. 2, a schematic structural diagram of a fuel power generation assembly according to an embodiment of the present invention is shown, where the fuel power generation assembly includes a plurality of single-type combustion units arranged in parallel and a plurality of thermoelectric generation units connected to each of the single-type combustion units, a single-type combustion unit is used to combust a fuel of a single fuel type to provide heat energy, and a single thermoelectric generation unit is used to convert the heat energy generated by the corresponding single-type combustion unit into electric energy, where the fuel includes: coal, oil, natural gas, coal gas, and biomass fuels.

The fuel power generation set comprises a plurality of single-type combustion units and thermoelectric generation units for providing electric energy, and environment-friendly biomass fuel is used as combustion fuel of the fuel power generation set, so that the technical scheme of the invention has the advantage of environmental protection, and the energy production capacity of the electric energy has energy supply of random cutting because the combustion units and the thermoelectric generation units in the fuel power generation set are connected in parallel, the power generation power of the combustion power generation set can be adjusted by controlling the work of the single combustion unit, and the effectiveness and the practicability of the intelligent monitoring and analyzing system based on comprehensive energy can adjust the power generation electric energy according to the power utilization condition of a user terminal are ensured.

Please refer to fig. 3, which is a schematic structural diagram of a monitoring unit according to the present invention, where the monitoring unit includes a data storage module for storing the historical electric energy consumption data and data detected in real time by the data detection module, and a data detection module for detecting electric energy consumption of a user terminal, electric energy capacity of a photovoltaic power generation set, electric energy capacity of a fuel power generation set, and electric energy storage amount of the power storage set, the data storage module is respectively connected to the data detection module and the coordination control unit, and the data detection module is respectively connected to the photovoltaic power generation set, the fuel power generation set, the power storage set, and an electric energy input port of the user terminal.

The data storage module is arranged to ensure that the historical data can be effectively recorded, the data detection module is arranged to detect the current power utilization condition of the user side and the generated energy of the photovoltaic power generation set and the fuel power generation set of the power generation side and detect the electric quantity storage condition of the power storage set, and the data storage module effectively ensures that the generated energy can be adjusted according to the actual electric energy consumption state of the user side, so that the effective utilization of the generated electric energy is ensured.

Referring to fig. 4, which is a power supply logic diagram of the intelligent monitoring and analyzing system based on integrated energy according to the present invention, the coordination control unit forms a power consumption statistical function P (t) according to the historical power consumption data, determines the power demand level of the user terminal by analyzing P (t) to match a preliminary power supply scheme for the user terminal, and sets the power consumption statistical function P (t) = PT, where t is the power consumption data acquisition time of the user terminal, PT is the total amount of power consumed by the user terminal at the power consumption data acquisition time t, the coordination control unit is provided with a first power demand level power standard PT1 and a second power demand level power standard PT2, where 0 < PT1 < PT2, the coordination control unit records the total power consumption of the user terminal in the ith preset statistical period as PT i, and sets PT i = P (t i = P) (t is a power consumption total amount of the user terminal in the ith preset statistical period _i+1 )-P(t _i ) Wherein, t _i For the start time, t, of the ith predetermined statistical period _i+1 Is the starting time of the (i + 1) th preset statistical period, i is an integer,

when the Pt i is less than or equal to the PT1, the coordination control unit judges that the ith preset statistical period is in a first electric energy demand level and adopts a first power supply scheme, and the coordination control unit controls the power storage unit to be started to supply power to the user side and controls the fuel power generation unit to be closed;

The coordination control unit of the invention forms an electric energy consumption statistical function P (t) according to the historical electric energy consumption data statistics and determines the electric energy demand level of the user terminal by analyzing the P (t), the electric energy consumption condition of the user terminal in the historical data is analyzed to preliminarily obtain the electric energy consumption level of the user terminal in a preset statistical period, the historical data is effectively used as the reference of generated energy to preliminarily plan which power generation mode is adopted for power generation, only a photovoltaic power generation set is used for power supply in the preset statistical period with less electric energy consumption, and the effective utilization of clean energy is ensured.

Specifically, the coordination control unit determines whether the power storage group has power supply capacity according to the electric quantity stored in the power storage group under the first power supply condition, the coordination control unit is provided with a power storage group electric energy reserve percentage standard E, wherein, E is more than 10% and less than 30%, the coordination control unit records the actual value of the electric quantity stored in the power storage group as qa, the maximum stored electric quantity in the power storage group as qz, the coordination control unit records the power storage group electric energy reserve percentage as E, and sets E = qa/qz × 100%,

when the E is larger than or equal to the E, the coordination control unit judges that the reserve electric quantity of the electricity storage group meets the standard and the electricity storage group has power supply capacity, controls the electricity storage group to supply power to the user side and determines the starting time of the fuel electricity generation group according to the electric energy consumption of the user side and the electric energy storage quantity of the photovoltaic electricity generation group so that the fuel electricity generation group supplies power to the user side;

The coordination control unit determines whether the power storage group has power supply capacity according to the electric quantity stored in the power storage group, if the electric quantity in the power storage group is lower than the standard, the power storage group may not provide required electric energy for the user terminal, and the power storage group does not have electric energy supply capacity when the electric energy demand of the user is increased, so that by detecting the electric quantity stored in the power storage group, on one hand, the power storage group can be ensured to effectively provide electric energy within a certain time when providing electric energy for the user terminal, and on the other hand, the scheme of providing fuel power generation for the power storage group without using the power storage and supply capacity is realized through detection, the electric energy utilization of the power storage is effectively ensured, the power supply capacity is prevented from exceeding the use level of the user terminal, and meanwhile, the power supply terminal can be ensured to have stable electric energy supply.

Please refer to fig. 5, which is a feedback adjustment logic diagram of an intelligent monitoring and analyzing system based on integrated energy according to the present invention, wherein the coordination control unit calculates an electrical load parameter of a user terminal according to an electrical energy consumption of the user terminal and an electrical energy storage amount of the photovoltaic power generation group under a first power supply adjustment condition, and determines an on-waiting duration or an off-waiting duration of the fuel power generation group according to the electrical load parameter, the coordination control unit is provided with a first electrical load reference standard A1 and a second electrical load reference standard A2, wherein A1 is greater than 0.5 and less than 1 and less than A2, the monitoring unit detects an electrical quantity qb stored in the electrical storage group by the photovoltaic power generation group in a preset detection period TB and an electrical energy consumption qc of the user terminal in a preset detection period TB, the coordination control unit records the electrical load parameter as a, and sets a = qb/qc,

when a is less than or equal to A1, the coordination control unit judges that the power consumption load parameter is lower than a first power consumption load reference standard, the coordination control unit controls the fuel power generation set to be started after the starting waiting time delta ta so as to supply power to the user side, controls the power storage set to be stopped after the fuel power generation set is started so as to supply power to the user side, and sets delta ta =0;

when A1 is larger than a and smaller than or equal to A2, the coordination control unit judges that the power consumption load parameter meets a first power consumption load reference standard, the coordination control unit controls the fuel power generation set to be started after the starting waiting time delta ta so as to supply power to the user side, and controls the power storage set to be stopped after the fuel power generation set is started so as to supply power to the user side, and delta ta = [0.5 qa/(qc-qb) ] × TB is set, wherein TB is larger than 1min and smaller than 60min;

According to the invention, by detecting the generated energy of the current photovoltaic power generation set and the electric energy consumption of the user terminal, when the electric energy stored in the electricity storage set is used for supplying power, the electric energy consumption of the electricity storage set can be predicted, and the power generation starting time of the fuel power generation set is determined according to the electric energy difference between electricity storage and power supply, so that the stability of the electric energy supply of the user terminal can be ensured when the electricity storage set is used for supplying power to ensure that the electric energy supply of the user terminal is switched from the electricity storage set to the fuel power generation set by presetting the starting power supply of the fuel power generation set when the electricity storage electric energy is consumed to a set value.

Please refer to fig. 5, which is a feedback adjustment logic diagram of the intelligent monitoring and analyzing system based on integrated energy according to the present invention, wherein the coordination control unit determines a threshold adjustment manner for the on-waiting duration or the off-waiting duration under the first power supply adjustment condition according to the current power demand level of the system, so that the power supply start time or the power supply end time of the fuel power generation set meets the power demand of the user terminal, the coordination control unit is provided with a first power demand level adjustment parameter α 1, a second power demand level adjustment parameter α 2, and a third power demand level adjustment parameter α 3, where 0 < α 3 < 0.6 < α 2 < 1 < α 1,

when the system is at a first electric energy demand level, the coordination control unit adjusts the threshold value by adopting a first electric energy demand level adjustment parameter alpha 1, records the adjusted opening waiting time length threshold value as delta TA and the adjusted closing waiting time length threshold value as delta TB, and sets delta TA = delta TA0 × alpha 1 and delta TB = delta TB0 × alpha 1, wherein delta TA0 is a preset basic opening waiting time length threshold value, and delta TB0 is a preset basic closing waiting time length threshold value;

Specifically, the coordination control unit compares the opening waiting time length delta TA with a corresponding opening waiting time length threshold value delta TA, compares the closing waiting time length delta TB with a corresponding closing waiting time length threshold value delta TB under a first power supply correction condition to determine an adjustment mode for the power supply of the fuel power generation set,

when delta TB is larger than delta TB, the coordination control unit judges that the closing waiting time length meets a threshold value standard, and the coordination control unit controls the fuel power generation set to be kept closed within the closing waiting time length delta TB;

The invention determines a threshold value adjusting mode aiming at the opening waiting time length or the closing waiting time length according to the electric energy demand level of the preset statistic period corresponding to the current system so as to enable the power generation starting time or the power generation ending time of the fuel power generation set to accord with the electric energy demand of a user terminal, compares the opening waiting time length delta TA or the closing waiting time length delta TB obtained by calculation with the corresponding opening waiting time length threshold value delta TA or the closing waiting time length threshold value delta TB to determine the adjusting mode aiming at the power supply of the fuel power generation set, determines the opening waiting time length or the closing waiting time length by judging the current electric energy demand level, and can avoid the situation that the electric energy supply is interrupted because the electric energy consumption value difference of the user terminal is larger at different electric energy demand levels, and at the moment, the situation that the electric energy supply is still in the power generation waiting stage when the electric energy is not provided by the electric energy consumption of the power storage set to the preset value can be avoided by adjusting the opening waiting time length or the closing waiting time length, thereby further ensuring the effective power supply of the user terminal.

Specifically, the coordination control unit determines whether to start the fuel power generation set to supply power to the power storage set according to the generated power of the photovoltaic power generation set under the second power supply condition, the coordination control unit is provided with a generated power standard F1, wherein F1 is greater than 0, the coordination control unit records the generated power of the photovoltaic power generation set detected by the monitoring unit as fg,

when fg is larger than or equal to F1, the coordination control unit judges that the power generation power of the photovoltaic power generation set meets the standard and the power generation amount of the photovoltaic power generation set meets the standard, and the coordination control unit controls the fuel power generation set to close the power supply to the power storage set and controls the photovoltaic power generation set to supply power to the power storage set;

The invention judges whether the photovoltaic power generation set can provide enough electric energy or not by judging the power generation power of the photovoltaic power generation set, and supplements and stores the electricity by adopting the fuel power generation set when the power generation power of the photovoltaic power generation set is lower than the standard, thereby effectively ensuring the sufficient electric energy storage, further ensuring that the technical scheme of the invention can provide the required electric energy for the user terminal, and avoiding the situation that the power supply requirement is not satisfied due to the insufficient electric energy.

Specifically, the coordination control unit determines an electric energy consumption trend of a user terminal under a third power supply condition according to the electric energy consumption statistical function P (t) to adjust the generated power of the fuel power generation set, the coordination control unit is provided with a first trend comparison parameter D1, a second trend comparison parameter D2, a first power adjustment parameter β 1, a second power adjustment parameter β 2 and a third power adjustment parameter β 3, wherein D1 is greater than 0 and less than D2, β 1 is greater than 0 and less than β 2 and less than β 3, the coordination control unit records the electric energy consumption trend of the user terminal as D (t), D (t) is set as a derivative function of P (t), D (t) = P' (t), the coordination control unit records the electric energy consumption trend of the user terminal at t as D, D is greater than or equal to 0,

when D is more than or equal to 0 and less than D1, the coordination control unit judges that the electric energy consumption of the user side is in a first increase interval and adjusts the generated power of the fuel power generation group to fr, and fr = fr0 × β 1, fr0 is set as the preset generated power of the fuel power generation group;

The method and the device determine the electric energy consumption trend of the user side through the electric energy consumption statistical function P (t) to adjust the power generation power of the fuel power generation set, judge the electric energy consumption trend of the user side through the analysis of the electric energy consumption of the user side, and adjust the power generation power of the fuel power generation set, thereby effectively ensuring that the technical scheme of the invention can effectively identify the electric energy value of the demand quantity corresponding to the electric energy demand of the user side, ensuring the effective utilization of power generation and avoiding the energy waste caused by excessive power generation.

Example 1:

this embodiment provides an intelligent monitoring analytic system based on comprehensive energy, and its user side power supply object is each industrial enterprise in the region, the system includes: photovoltaic power generation group, the fuel power generation group of burning living beings, monitoring unit, accumulate group and coordinated control unit, each parameter sets up to in the coordinated control unit:

the first power demand level power standard PT1=0.1 multiplied by historical statistics averages power consumption of the user terminal all day long;

the second electric energy demand level electric quantity standard PT2=0.3 multiplied by historical statistics is used for averaging the electric consumption of the user terminal all day;

the preset statistical period equally divides 24 hours in one day into 2 statistical periods, wherein the duration of each statistical period is 12 hours, and the statistical periods are respectively as follows: 1 st statistical period 6; the 2 nd statistical period 18;

the standard of the electric energy storage percentage of the electricity storage group E =20%;

first electrical load reference standard A1=0.6;

second electrical load reference standard A2=1.3;

a first power demand level adjustment parameter α 1=1.5;

a second power demand level adjustment parameter α 2=0.8;

a third power demand level adjustment parameter α 3=0.5;

the generated power standard F1=0.5 multiplied by the rated generated power of the photovoltaic power generation group;

the first trend comparison parameter D1=0.05;

the second trend comparison parameter D2=0.1;

the first power regulating variable β 1=0.6;

the second power regulating variable β 2=1.1;

the third power manipulated variable β 3=1.5.

Example 2:

this embodiment provides an intelligent monitoring analytic system based on comprehensive energy, and its user side power supply object is single electric energy demand object, the system includes: photovoltaic power generation group, the fuel power generation group of burning natural gas, monitoring unit, accumulate group and coordinated control unit, each parameter sets up to in the coordinated control unit:

the first electric energy demand level electric quantity standard PT1=0.2 multiplied by historical statistics is used for averaging the electric consumption of the user terminal all day;

the second power demand level power standard PT2=0.4 multiplied by historical statistics averages power consumption of the user terminal all day long;

the preset statistical period equally divides 24 hours in one day into 4 statistical periods, wherein the duration of each statistical period is 6 hours, and the statistical periods are respectively as follows: 1 st statistical period 0; the 2 nd statistical period 6; the 3 rd statistical period 12; 4 th statistical period 18;

the standard of the electric energy storage percentage of the electricity storage group E =15%;

first electrical load reference standard A1=0.8;

second electrical load reference standard A2=1.2;

a first power demand level adjustment parameter α 1=1.5;

a second power demand level adjustment parameter α 2=0.8;

a third power demand level adjustment parameter α 3=0.5;

the first trend comparison parameter D1=0.05;

the second trend comparison parameter D2=0.1;

the first power regulating variable β 1=0.6;

a second power regulating variable β 2=1.1;

the third power manipulated variable β 3=1.5.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent monitoring and analyzing system based on comprehensive energy sources is characterized by comprising:

2. The intelligent monitoring and analysis system based on integrated energy resources of claim 1, wherein the fuel power generation set comprises a plurality of single-type combustion units arranged in parallel and a plurality of thermoelectric generation units connected to each of the single-type combustion units, a single-type combustion unit is used for combusting fuel of a single fuel type to provide heat energy, a single thermoelectric generation unit is used for converting the heat energy generated by the corresponding single-type combustion unit into electric energy, and the fuel comprises: coal, oil, natural gas, coal gas, and biomass fuels.

3. The system according to claim 1, wherein the monitoring unit comprises a data storage module for storing the historical electric energy consumption data and data detected by the data detection module in real time, and a data detection module for detecting the electric energy consumption of the user terminal, the electric energy capacity of the photovoltaic power generation group, the electric energy capacity of the fuel power generation group and the electric energy storage of the electric storage group, the data storage module is respectively connected with the data detection module and the coordination control unit, and the data detection module is respectively connected with the electric energy input ports of the photovoltaic power generation group, the fuel power generation group, the electric storage group and the user terminal.

4. The system according to claim 3, wherein the coordination control unit forms a statistical power consumption function P (t) according to the historical power consumption data, determines the power demand level of the user end by analyzing P (t) to match a preliminary power supply scheme for the user end, and sets the statistical power consumption function P (t) = PT, where t is the power consumption data collection time of the user end, and PT is the total amount of power consumed by the user end at the time t of the power consumption data collection, and the coordination control unit is provided with a first power demand level power standard PT1 and a second power demand level power standard PT2, where 0 < PT1 < PT2, and sets the total amount of power consumption of the user end in the ith preset statistical period as Pti, and sets Pti = P (t) = PT _i+1 )-P(t _i ) Wherein, t _i For the start time, t, of the ith predetermined statistical period _i+1 Is the starting time of the (i + 1) th preset statistical period, i is an integer,

when Pti is less than or equal to PT1, the coordination control unit judges that the ith preset statistical period is at a first electric energy demand level and adopts a first power supply scheme, and the coordination control unit controls the power storage unit to be started to supply power to the user side and controls the fuel power generation unit to be closed;

when PT1 is larger than Pti and smaller than or equal to PT2, the coordination control unit judges that the ith preset statistical period is in a second electric energy demand level and adopts a second power supply scheme, the coordination control unit controls the power storage group to supply power to the user side and determines whether to start a fuel power generation group to supply power to the power storage group according to the power generation power of the photovoltaic power generation group so that the power storage group stores the electric energy generated by the fuel power generation group;

and when Pti is greater than PT2, the coordination control unit judges that the ith preset statistical period is at a third electric energy demand level and adopts a third power supply scheme, and the coordination control unit controls the fuel power generation group to supply power to the user side.

5. The intelligent monitoring and analyzing system based on integrated energy of claim 4, wherein the coordination control unit determines whether the electricity storage group has the power supply capability according to the electricity quantity stored in the electricity storage group under the first power supply condition, the coordination control unit sets a standard E of percentage of electricity storage group electric energy reserve, wherein, 10% < E < 30%, the coordination control unit records the actual value of the electricity quantity stored in the electricity storage group as qa, the maximum stored electricity quantity in the electricity storage group as qz, the coordination control unit records the percentage of electricity storage group as E, sets E = qa/qz x 100%,

when E is less than E, the coordination control unit judges that the reserve electric quantity of the electricity storage group is lower than the standard, the electricity storage group does not have the power supply capacity and adopts the third power supply scheme, and the coordination control unit controls the fuel power generation group to supply power to the user side;

6. The intelligent monitoring and analyzing system based on integrated energy of claim 5, wherein the coordination control unit calculates a power consumption load parameter of a user terminal according to a power consumption amount of the user terminal and a power storage amount of the photovoltaic power generation group under a first power supply adjustment condition, and determines an on-waiting duration or an off-waiting duration of the fuel power generation group according to the power consumption load parameter, the coordination control unit is provided with a first power load reference standard A1 and a second power load reference standard A2, wherein A1 is more than 0.5 and less than 1 and less than A2, the monitoring unit detects a power qb stored in the power storage group by the photovoltaic power generation group in a preset detection period TB and a power consumption qc of the user terminal in a preset detection period TB, the coordination control unit records the power consumption load parameter as a, and sets a = qb/qc,

when a is greater than A2, the coordination control unit judges that the power utilization load parameter meets a second power utilization load reference standard, the coordination control unit controls the power storage group to supply power to the user end and controls the fuel power generation group to keep closing within a closing waiting time duration delta TB, and delta TB is set to be = [0.3 qa/(qb-qc) ] × TB;

7. The intelligent monitoring and analyzing system based on integrated energy resource of claim 6, wherein the coordination control unit determines the threshold adjustment manner for the on-waiting duration or the off-waiting duration according to the current power demand level of the system under the first power supply adjustment condition so that the power supply start time or the power supply end time of the fuel power generation set conforms to the power demand of the user terminal, and is provided with a first power demand level adjustment parameter α 1, a second power demand level adjustment parameter α 2 and a third power demand level adjustment parameter α 3, wherein 0 < α 3 < 0.6 < α 2 < 1 < α 1,

8. The intelligent monitoring and analyzing system based on integrated energy of claim 7, wherein the coordination control unit compares the on-wait duration Δ TA with a corresponding on-wait duration threshold Δ TA, compares the off-wait duration Δ TB with a corresponding off-wait duration threshold Δ TB under a first power supply correction condition to determine an adjustment manner for the power supply of the fuel generation set,

when the delta TB is less than or equal to the delta TB, the coordination control unit judges that the closing waiting time length meets the threshold value standard, and controls the fuel power generation set to be kept closed within the closing waiting time length delta TB;

the first power supply correction condition is that the coordination control unit completes the calculation of Δ TA and Δ TB and the adjustment of Δ TA and Δ TB.

9. The intelligent monitoring and analyzing system based on integrated energy of claim 4, wherein the coordination control unit determines whether to start the fuel power generation set to supply power to the power storage set according to the power generation power of the photovoltaic power generation set under the second power supply condition, the coordination control unit is provided with a power generation standard F1, wherein F1 is greater than 0, the coordination control unit records the power generation power of the photovoltaic power generation set detected by the monitoring unit as fg,

10. The comprehensive energy-based intelligent monitoring and analyzing system of claim 4, wherein the coordination control unit determines an electric energy consumption trend of the user terminal according to the electric energy consumption statistical function P (t) under a third power supply condition to adjust the generated power of the fuel power generation set, the coordination control unit is provided with a first trend comparison parameter D1, a second trend comparison parameter D2, a first power adjustment parameter β 1, a second power adjustment parameter β 2 and a third power adjustment parameter β 3, wherein D1 is greater than 0 and less than D2, β 1 is greater than 0 and less than β 2 and less than β 3, the coordination control unit records the electric energy consumption trend of the user terminal as D (t), D (t) is set as a derivative function of P (t), D (t) = P' (t), the coordination control unit records the electric energy consumption trend of the user terminal at t as D, D is greater than or equal to 0,

when D is larger than or equal to D2, the coordination control unit judges that the electric energy consumption of the user side is in a third increase interval and adjusts the generated power of the fuel power generation set to fr, and fr = fr0 × β 3 is set;