CN117134505A - Operation monitoring management system of energy storage power station - Google Patents
Operation monitoring management system of energy storage power station Download PDFInfo
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Abstract
The invention relates to an operation monitoring management system of an energy storage power station, in particular to the technical field of monitoring management of the energy storage power station, which comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring output parameters, energy storage parameters and environmental parameters of a storage battery; the voltage analysis module is used for analyzing voltage stability; the second acquisition module is used for acquiring the electricity consumption; the electricity analysis module is used for analyzing the load condition and the fluctuation condition; the charge analysis module is used for analyzing the working state of the storage battery; the analysis and adjustment module is used for adjusting the analysis processes of the load condition, the fluctuation condition and the working state; the adjusting and optimizing module is used for optimizing the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery; and the output management module is used for controlling the running state of the storage battery. The invention realizes the supervision of the output of the storage battery in the energy storage power station, and solves the problems of low monitoring efficiency and inaccurate management of the electric energy output of the storage battery in the energy storage power station.
Description
Technical Field
The invention relates to the technical field of monitoring and management of energy storage power stations, in particular to an operation monitoring and management system of an energy storage power station.
Background
In modern production activities, electric energy is the main energy source that people used, and electric energy output is stable can only satisfy people's demand of producing life, and this makes it to need to supervise electric energy output in the energy storage power station to guarantee electric energy output's continuity and stability.
Chinese patent publication No.: CN115954989B discloses an operation monitoring management system for an energy storage power station, which comprises the steps of analyzing the safety coefficient of local thermal performance of each cell and the safety coefficient of the overall state of a target energy storage battery pack, further evaluating the comprehensive thermal characteristic evaluation index of the target energy storage battery pack, thereby guaranteeing the safety performance stability of the energy storage battery pack, further improving the operation safety and the power supply reliability of the energy storage power station, simultaneously analyzing the expected service life of the target energy storage battery pack according to the historical thermal characteristic data of the target energy storage battery pack and combining the current monitoring data of the target energy storage battery pack. The invention realizes the analysis of the safety and stability of the battery pack in the energy storage power station, does not realize the management and control of the battery pack in the energy storage power station, and has the problems of low monitoring efficiency and inaccurate management of the output of the storage battery in the energy storage power station.
Disclosure of Invention
Therefore, the invention provides an operation monitoring management system of an energy storage power station, which is used for solving the problems of low monitoring efficiency and inaccurate management of the output of a storage battery in the energy storage power station in the prior art.
In order to achieve the above object, the present invention provides an operation monitoring and management system for an energy storage power station, comprising:
the first acquisition module is used for periodically acquiring output parameters, energy storage parameters and environmental parameters of the storage battery in the energy storage power station according to a preset period;
the voltage analysis module is used for analyzing the voltage stability according to the output parameters of the storage battery;
the second acquisition module is used for acquiring the electricity consumption of the storage battery power supply area when the voltage stability is voltage fluctuation;
the electricity consumption analysis module is used for analyzing the load condition and the fluctuation condition according to the electricity consumption of the storage battery power supply area;
the charge analysis module is used for analyzing the working state of the storage battery according to the energy storage parameter of the storage battery when the voltage stability is short interruption;
the analysis and adjustment module is used for adjusting the analysis process of the load condition and the fluctuation condition according to the environmental parameters and adjusting the analysis process of the working state of the storage battery according to the environmental parameters;
the adjusting and optimizing module is used for analyzing the harmonic current according to the output parameters of the storage battery and optimizing the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery according to the harmonic current;
and the output management module is used for controlling the running state of the storage battery according to the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery.
Further, the voltage analysis module calculates an average voltage of the current period according to the output voltage of the current period, compares a calculation result with the average voltage of the first two periods, and analyzes voltage stability according to the comparison result, wherein:
when U1 is not more than U/U -1 U2 is not less than and U1 is not less than U/U -2 When u2 is not more than, the voltage analysis module judges that the voltage stability is normal;
when U1 is not more than U/U -1 U/U is less than or equal to U2 -2 U1 or U1 is less than or equal to U/U -1 U/U is less than or equal to U2 -2 When the voltage is more than u2, the voltage analysis module judges that the voltage stability is voltage fluctuation;
when U/U -1 < U1/2 and U/U -2 And when the voltage is less than u1/2, the voltage analysis module judges that the voltage stability is short interruption.
Further, the electricity consumption analysis module is provided with a load analysis unit, which is used for comparing the electricity consumption of the current period with an electricity consumption threshold value and judging the load condition according to the comparison result, wherein:
when W/i/(W) Total (S) 1440) is more than or equal to w, the load analysis unit judges that the load condition is high load;
when W/i/(W) Total (S) 1440) < w, the load analysis unit determines that the load condition is a normal load;
wherein W represents the electricity consumption of the current period, W Total (S) The electricity consumption within 24 hours is represented, w represents the electricity consumption threshold, and the value range of w is more than or equal to 1.4 and less than or equal to 1.8.
Further, the electricity consumption analysis module is further provided with a fluctuation analysis unit, which is used for calculating the period average electricity consumption according to the electricity consumption, comparing the period electricity consumption with the period average electricity consumption, and counting the fluctuation times according to the comparison result, wherein:
when u1 is less than Wk/W' less than u2, the fluctuation analysis unit judges that the electricity consumption in the current analysis period is not fluctuated, and the fluctuation times are not counted;
when Wk/W 'is less than or equal to u1 or Wk/W' is less than or equal to u2, the fluctuation analysis unit judges the fluctuation of the electricity consumption in the current analysis period and counts the fluctuation times;
the fluctuation analysis unit analyzes the fluctuation condition according to the fluctuation times, wherein:
when G/64 is more than or equal to G, the fluctuation analysis unit judges that the fluctuation condition is high fluctuation frequency;
when G/64 is less than G, the fluctuation analysis unit judges that the fluctuation condition is low fluctuation frequency;
wherein, G represents the fluctuation times, G represents the fluctuation threshold, and the value range is as follows: g is more than or equal to 0.6 and less than 1.
Further, the charge analysis module compares the total charge capacity with the residual charge capacity, and analyzes the working state of the storage battery according to the comparison result, wherein:
when Q1/Q2 is more than or equal to Q, the charge analysis module judges that the working state of the storage battery is abnormal;
when Q1/Q2 is smaller than Q, the charge analysis module judges that the working state of the storage battery is normal;
wherein, Q1 represents the residual charge capacity, Q2 represents the total charge capacity, Q represents the charge threshold, and the range of the charge threshold is: q is more than or equal to 0.1 and less than or equal to 0.3.
Further, the analysis adjustment module is provided with an electricity adjustment unit for comparing the ambient temperature with a temperature threshold value and adjusting the analysis process of the load condition and the fluctuation condition according to the comparison result, wherein:
when T is less than or equal to T1, the electricity consumption adjusting unit judges that the temperature is normal, and does not adjust the analysis process of the load condition and the fluctuation condition;
when T1 is more than or equal to T2, the electricity consumption adjusting unit judges that the temperature is higher, adjusts the electricity consumption threshold, and sets w1=wxt1/T for the adjusted electricity consumption threshold as w 1;
when T is more than T2, the electricity consumption adjusting unit judges that the temperature is too high, adjusts the fluctuation threshold, and sets g1=gxt2/T for the adjusted fluctuation threshold g 1;
wherein T represents the ambient temperature, T1 represents the first temperature threshold, T2 represents the second temperature threshold, and T1 is more than or equal to 30 and less than or equal to 40 and less than or equal to T2 and less than 50.
Further, the analysis adjustment module is further provided with a charge adjustment unit for adjusting a charge threshold according to weather, wherein:
when the weather is overcast and rainy, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q1, and q1=qxα1 is set;
when the weather is strong wind, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q2, and q2=qxα2 is set;
when the weather is sunny, the charge adjusting unit does not adjust the charge threshold value;
wherein α1 represents a first adjustment parameter, and the value range is: alpha 1 is more than 1 and less than or equal to 1.2, alpha 2 represents a second adjustment parameter, and the value range is as follows: alpha 2 is more than or equal to 0.8 and less than 1.
Further, the adjustment optimization module is provided with a harmonic analysis unit, which is used for calculating harmonic current according to output parameters of the storage battery through a harmonic current calculation formula, and the harmonic analysis unit is provided with a harmonic current calculation formula as follows:
I1=j1×j2×AI×U×I×3
wherein, I1 represents harmonic current, j1 represents a load factor coefficient, and the value range is as follows: j1 is more than or equal to 0.5 and less than or equal to 0.8, j2 represents a treatment coefficient, and the value range is as follows: j2 is more than or equal to 0.2 and less than or equal to 1, AI represents harmonic current distortion rate, and the value range is as follows: AI is more than or equal to 0.1 and less than or equal to 0.35, wherein I represents the output current of the storage battery.
Further, the adjustment optimization module is provided with an adjustment optimization unit for optimizing the adjustment process of the load condition, the fluctuation condition and the working state of the storage battery according to the harmonic current, wherein:
when the I1/I is less than or equal to beta 1, the adjusting and optimizing unit judges that the harmonic current intensity is weak, and does not optimize the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery;
when β1 is smaller than I1/I is smaller than or equal to β2, the adjustment optimization unit judges that the adjustment process of the electricity consumption threshold value is optimized in the harmonic current intensity, the optimized electricity consumption threshold value is w2, and w2=w1/(1+β1+β2) is set;
when beta 2 is less than I1/I and less than or equal to beta 3, the adjusting and optimizing unit judges that the harmonic current intensity is higher, optimizes the adjusting process of the fluctuation threshold, and sets g2=g1/(1+beta 2+beta 3) for the optimized fluctuation threshold, wherein g2 is the fluctuation threshold;
when I1/I > β3, the adjustment optimizing unit determines that the harmonic current intensity is too high, optimizes the adjustment process of the fluctuation threshold and the charge threshold, sets the optimized fluctuation threshold as g3, sets g3=g1/(1+2×β3), sets the optimized charge threshold as q3, and sets q3=qz/(1+β3);
wherein, beta 1 represents a first harmonic threshold value, beta 2 represents a second harmonic threshold value, beta represents a third harmonic threshold value, beta 1 is more than 0 and less than or equal to 0.015 and less than or equal to 0.03 and less than or equal to 0.05, qz represents an adjusted charge threshold value, z is a charge threshold value number, and the range of values is as follows: z= {1,2}.
Further, the output management module controls the operation state of the energy storage power station according to the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery, wherein:
when the voltage stability is normal, the output management module does not control the running state of the storage battery;
when the voltage stability is voltage fluctuation and the load condition is high load, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the current running storage batteries;
when the voltage stability is voltage fluctuation and the fluctuation condition is high fluctuation frequency, the output management module controls to close the currently operated storage battery and open other non-operated storage batteries, and the number of the other non-operated storage batteries is less than or equal to the number of the currently operated storage batteries;
when the voltage stability is short-time interruption and the working state of the storage battery is abnormal, the output management module controls to close the storage battery which is currently operated and open other non-operated storage batteries with the same closing number;
when the voltage stability is short-time interruption and the working state of the storage battery is normal, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the currently running storage batteries.
Compared with the prior art, the invention has the advantages that the output parameters, the energy storage parameters and the environmental parameters of the storage battery are periodically acquired by the first acquisition module, so that the accuracy of data acquisition is improved, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of storage battery management is improved, the voltage stability is analyzed by the analysis of the storage battery parameters by the voltage analysis module, whether the voltage is in an abnormal state is judged, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of storage battery management is improved, the power consumption of a storage battery power supply area is acquired by the analysis of the second acquisition module, the accuracy of data acquisition is improved, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of the storage battery management is improved, the analysis of the electricity consumption is carried out by the electricity consumption analysis module to analyze the load condition and the fluctuation condition, the analysis accuracy of the voltage stability is improved, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of the storage battery management is improved, the working state of the storage battery is analyzed by the charge analysis module to analyze the storage battery energy storage parameter, the reason of the abnormal voltage is judged to be related to the working state of the storage battery, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is further improved, the accuracy of the storage battery management is improved, the analysis of the environmental parameter is carried out by the analysis and adjustment module to adjust the analysis process of the load condition, the fluctuation condition and the working state of the storage battery, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of storage battery management is improved, the influence of harmonic current on load conditions, fluctuation conditions and the working state of the storage battery is analyzed through the adjustment optimization module, so that the monitoring efficiency of a system on the output of the storage battery in the energy storage power station is improved, the accuracy of storage battery management is improved, the analysis of voltage stability, load conditions, fluctuation conditions and the working state of the storage battery is controlled through the output management module, the running state of the storage battery is controlled, the stability and continuity of the output of the storage battery are ensured, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, and the accuracy of storage battery management is improved.
Drawings
FIG. 1 is a block diagram of an operation monitoring and management system for an energy storage power station according to the present embodiment;
FIG. 2 is a block diagram of the electrical analysis module according to the present embodiment;
FIG. 3 is a block diagram illustrating an analysis adjustment module according to the present embodiment;
fig. 4 is a block diagram of the structure of the adjustment optimizing module according to the present embodiment.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of 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 merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, an operation monitoring and management system for an energy storage power station according to the present embodiment includes:
the first obtaining module is configured to periodically obtain, according to a preset period, an output parameter, an energy storage parameter and an environmental parameter of a storage battery in the energy storage power station, where the output parameter includes an output voltage and an output current, the energy storage parameter includes a total charge capacity and a residual charge capacity, the environmental parameter includes an environmental temperature and a weather, the environmental temperature is an environmental temperature of the storage battery, the weather includes a overcast and rainy day, a strong wind day and a sunny day, the energy storage power station is an energy storage power station including a plurality of groups of storage batteries, the environmental temperature is obtained by a temperature sensor, the setting number of the temperature sensor is at least one, the installation position of the temperature sensor is required to meet the position of the storage battery close to the energy storage power station, the weather is obtained by a weather website or is obtained by user interaction input, and the output parameter and the energy storage parameter of the storage battery are obtained by importing in background data in the storage battery management system, it can be understood that in this embodiment, the preset period is set to 15 minutes, a person skilled in the art can freely set, the setting of the preset period is required to be less than or equal to 1 hour, such as 10 minutes, 20 minutes, 30 minutes and the preset period is required to be reduced, and the preset period can be analyzed;
the voltage analysis module is used for analyzing voltage stability according to output parameters of the storage battery, and is connected with the first acquisition module, wherein the voltage stability comprises normal voltage, voltage fluctuation and short-time interruption;
the second acquisition module is used for acquiring the electricity consumption of the storage battery power supply area when the voltage stability is voltage fluctuation, and is connected with the voltage analysis module, wherein the electricity consumption of the storage battery power supply area is the electricity consumption within 24 hours when the voltage stability is voltage fluctuation, and the acquisition mode is that the background data of the power grid management platform is imported;
the power consumption analysis module is used for analyzing load conditions and fluctuation conditions according to the power consumption of the storage battery power supply area, the power consumption analysis module is connected with the second acquisition module, the load conditions comprise high load and normal load, and the fluctuation conditions comprise high fluctuation frequency and low fluctuation frequency;
the charge analysis module is used for analyzing the working state of the storage battery according to the energy storage parameter of the storage battery when the voltage stability is short-time interruption, and is connected with the voltage analysis module;
the analysis adjustment module is used for adjusting the analysis process of the load condition and the fluctuation condition according to the environmental parameters, and is also used for adjusting the analysis process of the working state of the storage battery according to the environmental parameters, and is connected with the charge analysis module and the electricity consumption analysis module;
the adjusting and optimizing module is used for analyzing the harmonic current according to the output parameters of the storage battery, optimizing the adjustment process of the load condition, the fluctuation condition and the working state of the storage battery according to the harmonic current, and connecting the adjusting and optimizing module with the analyzing and adjusting module;
the output management module is used for controlling the running state of the storage battery according to the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery, and is connected with the adjustment optimization module.
Referring to fig. 2, the electricity analysis module includes:
the load analysis unit is used for analyzing the load condition according to the electricity consumption of the current period of the storage battery power supply area;
the fluctuation analysis unit is used for analyzing the fluctuation times according to the electricity consumption of the storage battery power supply area and analyzing the fluctuation conditions according to the fluctuation times, and is connected with the load analysis unit.
Referring to fig. 3, the analysis adjustment module includes:
the electricity consumption adjusting unit is used for adjusting the analysis process of the load condition and the fluctuation condition according to the ambient temperature;
and the charge adjusting unit is used for adjusting the working state analysis process of the storage battery according to weather and is connected with the electricity adjusting unit.
Referring to fig. 4, the adjustment optimization module includes:
the harmonic analysis unit is used for analyzing harmonic current according to the output parameters of the storage battery;
the adjusting and optimizing unit is used for optimizing the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery according to the harmonic current, and is connected with the harmonic analysis unit.
Specifically, in this embodiment, the output parameters, the energy storage parameters and the environmental parameters of the storage battery are periodically acquired by the first acquisition module, so as to improve the accuracy of data acquisition, thereby improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, and improving the accuracy of storage battery management, by analyzing the parameters of the storage battery by the voltage analysis module, so as to analyze the voltage stability, and judge whether the voltage is in an abnormal state, thereby improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, and improving the accuracy of storage battery management, by analyzing the voltage stability by the second acquisition module, so as to acquire the electricity consumption of a power supply area of the storage battery, thereby improving the accuracy of data acquisition, and further improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, and improving the accuracy of storage battery management, by analyzing the load condition and fluctuation condition by the electricity consumption analysis module, thereby improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, improving the accuracy of storage battery management, and the accuracy of storage battery management by the charge analysis module, and analyzing the storage battery storage battery management, so as to analyze the working condition of the abnormal voltage and judge the cause of the storage battery in the storage power station, and improve the working condition of the storage battery in the storage power station, and improve the quality of the storage battery management, the output management module analyzes the output parameters of the storage battery to analyze the influence of harmonic current on the load condition, the fluctuation condition and the working state of the storage battery, so that the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, the accuracy of storage battery management is improved, and the output management module analyzes the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery to control the running state of the storage battery, so that the stability and the continuity of the output of the storage battery are ensured, the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, and the accuracy of storage battery management is improved.
Specifically, in this embodiment, the voltage analysis module calculates an average voltage of a current period according to an output voltage of the current period, compares a calculation result with the average voltage of the first two periods, and analyzes voltage stability according to the comparison result, where:
when U1 is not more than U/U -1 U2 is not less than and U1 is not less than U/U -2 When u2 is not more than, the voltage analysis module judges that the voltage stability is normal;
when U1 is not more than U/U -1 U/U is less than or equal to U2 -2 U1 or U1 is less than or equal to U/U -1 U/U is less than or equal to U2 -2 When the voltage is more than u2, the voltage analysis module judges that the voltage stability is voltage fluctuation;
when U/U -1 < U1/2 and U/U -2 When the voltage is less than u1/2, the voltage analysis module judges that the voltage stability is short interruption;
wherein U represents the average voltage of the current period, U -1 Representing the average voltage of the previous cycle, U -2 The average voltage of the previous two periods is represented, u= (u1+u2..+ Ui)/i is set, U1 represents the output voltage of the first minute in the current period, U2 represents the output voltage of the second minute in the current period, ui represents the output voltage of the last minute in the current period, i represents the duration of the preset period, the unit is minutes, U1 represents the first comparison threshold, and the value range is: u1 is more than or equal to 0.9 and less than 1, u2 represents a second comparison threshold, and the value range is as follows: u2 is more than 1 and less than or equal to 1.1. It may be understood that, in this embodiment, the values of the first comparison threshold and the second comparison threshold are not specifically limited, and can be freely set by a person skilled in the art, and only the judgment on the voltage stability needs to be satisfied, where the optimal values of the first comparison threshold and the second comparison threshold are: u1=0.95, u2=1.05.
Specifically, in this embodiment, the load analysis unit compares the electricity consumption of the current period with the electricity consumption threshold, and determines the load condition according to the comparison result, where:
when W/i/(W) Total (S) 1440) is more than or equal to w, the load analysis unit judges that the load condition is high load;
when W/i/(W) Total (S) 1440) < w, the load analysis unit determines that the load condition is a normal load;
wherein W represents the electricity consumption of the current period, W Total (S) The electricity consumption within 24 hours is represented, w represents the electricity consumption threshold, and the value range of w is more than or equal to 1.4 and less than or equal to 1.8. It can be understood that, in this embodiment, the value of the electricity consumption threshold is not specifically limited, and a person skilled in the art can freely set the value of the electricity consumption threshold only by meeting the analysis of the load condition, where the optimal value of the electricity consumption threshold is: w=1.6.
Specifically, in this embodiment, the load analysis unit analyzes the current period power consumption to determine the load condition, so that the power consumption in the power supply area directly affects the output of the storage battery, thereby improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station and improving the accuracy of the storage battery management.
Specifically, in this embodiment, the fluctuation analysis unit calculates the period average power consumption according to the power consumption, compares the period power consumption with the period average power consumption, and counts the fluctuation times according to the comparison result, where:
when u1 is less than Wk/W' less than u2, the fluctuation analysis unit judges that the electricity consumption in the current analysis period is not fluctuated, and the fluctuation times are not counted;
when Wk/W 'is less than or equal to u1 or Wk/W' is less than or equal to u2, the fluctuation analysis unit judges the fluctuation of the electricity consumption in the current analysis period and counts the fluctuation times;
wherein Wk represents the electricity consumption of the current analysis period, k represents the period number, and the value range is as follows: k= { 1.ltoreq.k.ltoreq.64|k ε N + And W 'represents a period average power consumption, and W' = [ w1+w2+ ] +wk1]And/k, W1 represents the electricity consumption of the first period in the obtained electricity consumption, W2 represents the electricity consumption of the second period in the obtained electricity consumption, wk1 represents the electricity consumption of the current period, and k1 epsilon k.
Specifically, the fluctuation analyzing unit in this embodiment analyzes the fluctuation situation according to the fluctuation times, wherein:
when G/64 is more than or equal to G, the fluctuation analysis unit judges that the fluctuation condition is high fluctuation frequency;
when G/64 is less than G, the fluctuation analysis unit judges that the fluctuation condition is low fluctuation frequency;
wherein, G represents the fluctuation times, G represents the fluctuation threshold, and the value range is as follows: g is more than or equal to 0.6 and less than 1. It can be understood that, in this embodiment, the value of the fluctuation threshold is not specifically limited, and a person skilled in the art can freely set the value of the fluctuation threshold only by meeting the judgment on the fluctuation condition, where the optimal value of the fluctuation threshold is: g=0.8.
Specifically, in this embodiment, the fluctuation analysis unit analyzes the electricity consumption of each period and the average electricity consumption of each period to analyze the fluctuation range of the electricity consumption of each period, and determine the large fluctuation of the electricity consumption, so as to analyze the fluctuation condition, further improve the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, and improve the accuracy of the storage battery management.
Specifically, in this embodiment, the charge analysis module compares the total charge capacity with the remaining charge capacity, and analyzes the working state of the storage battery according to the comparison result, where:
when Q1/Q2 is more than or equal to Q, the charge analysis module judges that the working state of the storage battery is abnormal;
when Q1/Q2 is smaller than Q, the charge analysis module judges that the working state of the storage battery is normal;
wherein, Q1 represents the residual charge capacity, Q2 represents the total charge capacity, Q represents the charge threshold, and the range of the charge threshold is: q is more than or equal to 0.1 and less than or equal to 0.3. It can be understood that, in this embodiment, the value of the charge threshold is not specifically limited, and a person skilled in the art can freely set the value of the charge threshold only by meeting the judgment on the working state of the storage battery, where the optimal value of the charge threshold is: q=0.2.
Specifically, in this embodiment, the electricity consumption adjustment unit compares the environmental temperature with a temperature threshold, and adjusts the analysis process of the load condition and the fluctuation condition according to the comparison result, where:
when T is less than or equal to T1, the electricity consumption adjusting unit judges that the temperature is normal, and does not adjust the analysis process of the load condition and the fluctuation condition;
when T1 is more than or equal to T2, the electricity consumption adjusting unit judges that the temperature is higher, adjusts the electricity consumption threshold, and sets w1=wxt1/T for the adjusted electricity consumption threshold as w 1;
when T is more than T2, the electricity consumption adjusting unit judges that the temperature is too high, adjusts the fluctuation threshold, and sets g1=gxt2/T for the adjusted fluctuation threshold g 1;
wherein T represents the ambient temperature, T1 represents the first temperature threshold, T2 represents the second temperature threshold, and T1 is more than or equal to 30 and less than or equal to 40 and less than or equal to T2 and less than 50. It can be understood that, in this embodiment, the values of the first temperature threshold and the second temperature threshold are not specifically limited, and can be freely set by a person skilled in the art, and only the adjustment of the load condition and the fluctuation condition analysis process needs to be satisfied, where the optimal values of the first temperature threshold and the second temperature threshold are as follows: t1=30, t2=42.
Specifically, in this embodiment, the electricity consumption adjusting unit is used to analyze the environmental temperature to adjust the electricity consumption threshold and the fluctuation threshold, where the electricity consumption threshold and the fluctuation threshold are related to the environmental temperature, and adjust the electricity consumption threshold and the fluctuation threshold when the environmental temperature does not meet the working temperature of the storage battery, so as to improve the accuracy of analysis of the load condition and the fluctuation condition, further improve the monitoring efficiency of the system on the output of the storage battery in the energy storage power station, and improve the accuracy of storage battery management.
Specifically, the charge adjustment unit in this embodiment adjusts the charge threshold according to weather, where:
when the weather is overcast and rainy, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q1, and q1=qxα1 is set;
when the weather is strong wind, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q2, and q2=qxα2 is set;
when the weather is sunny, the charge adjusting unit does not adjust the charge threshold value;
wherein α1 represents a first adjustment parameter, and the value range is: alpha 1 is more than 1 and less than or equal to 1.2, alpha 2 represents a second adjustment parameter, and the value range is as follows: alpha 2 is more than or equal to 0.8 and less than 1. It can be understood that, in the present embodiment, the values of the first adjustment parameter and the second adjustment parameter are not specifically limited, and can be freely set by a person skilled in the art, and only the adjustment of the charge threshold needs to be satisfied, where the optimal values of the first adjustment parameter and the second adjustment parameter are α1=1.1, and α2=0.9.
Specifically, in this embodiment, the charge adjustment unit is used to adjust the charge threshold value through the analysis of the weather, so as to increase the influence of severe weather on the abnormal judgment of the storage battery, and make the charge threshold value related to the weather, thereby improving the monitoring efficiency of the system on the output of the storage battery in the energy storage power station and improving the accuracy of the storage battery management.
Specifically, in this embodiment, the harmonic analysis unit calculates the harmonic current according to the output parameter of the storage battery through a harmonic current calculation formula, where the harmonic analysis unit is provided with the harmonic current calculation formula as follows:
I1=j1×j2×AI×U×I×3
wherein, I1 represents harmonic current, j1 represents a load factor coefficient, and the value range is as follows: j1 is more than or equal to 0.5 and less than or equal to 0.8, j2 represents a treatment coefficient, and the value range is as follows: j2 is more than or equal to 0.2 and less than or equal to 1, AI represents harmonic current distortion rate, and the value range is as follows: AI is more than or equal to 0.1 and less than or equal to 0.35, wherein I represents the output current of the storage battery. It can be understood that the values of the load factor coefficient, the treatment coefficient and the harmonic current distortion rate are not specifically limited in this embodiment, and can be freely set by a person skilled in the art, and the values of the load factor coefficient, the treatment coefficient and the harmonic current distortion rate are related to the number capacity of the storage batteries and the number capacity of the transformers in the energy storage power station, so that the calculation of the harmonic current is only required to be satisfied.
Specifically, in this embodiment, the harmonic current is analyzed by the harmonic analysis unit to analyze the parameters of the storage battery, so that accuracy of harmonic current analysis is improved, monitoring efficiency of the system on the output of the storage battery in the energy storage power station is further improved, and accuracy of storage battery management is improved.
Specifically, the adjustment optimizing unit in this embodiment optimizes the adjustment process of the load condition, the fluctuation condition, and the operating state of the storage battery according to the harmonic current, wherein:
when the I1/I is less than or equal to beta 1, the adjusting and optimizing unit judges that the harmonic current intensity is weak, and does not optimize the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery;
when β1 is smaller than I1/I is smaller than or equal to β2, the adjustment optimization unit judges that the adjustment process of the electricity consumption threshold value is optimized in the harmonic current intensity, the optimized electricity consumption threshold value is w2, and w2=w1/(1+β1+β2) is set;
when beta 2 is less than I1/I and less than or equal to beta 3, the adjusting and optimizing unit judges that the harmonic current intensity is higher, optimizes the adjusting process of the fluctuation threshold, and sets g2=g1/(1+beta 2+beta 3) for the optimized fluctuation threshold, wherein g2 is the fluctuation threshold;
when I1/I > β3, the adjustment optimizing unit determines that the harmonic current intensity is too high, optimizes the adjustment process of the fluctuation threshold and the charge threshold, sets the optimized fluctuation threshold as g3, sets g3=g1/(1+2×β3), sets the optimized charge threshold as q3, and sets q3=qz/(1+β3);
wherein, beta 1 represents a first harmonic threshold value, beta 2 represents a second harmonic threshold value, beta represents a third harmonic threshold value, beta 1 is more than 0 and less than or equal to 0.015 and less than or equal to 0.03 and less than or equal to 0.05, qz represents an adjusted charge threshold value, z is a charge threshold value number, and the range of values is as follows: z= {1,2}. It can be understood that, in this embodiment, the value of the harmonic threshold is not specifically limited, and a person skilled in the art can freely set the value of the harmonic threshold only by optimizing the adjustment process of the working state of the storage battery, where the optimal value of the harmonic threshold is: β1=0.015, β2=0.03, β3=0.05.
Specifically, in this embodiment, the harmonic current is analyzed by the adjustment optimization module to optimize the adjustment process of the electricity threshold, the fluctuation threshold and the charge threshold, and the influence of the harmonic current on the load condition, the fluctuation condition and the working state of the storage battery is increased by using the influence of the electricity threshold, the fluctuation threshold and the charge threshold on the harmonic current, so that the monitoring efficiency of the system on the output of the storage battery in the energy storage power station is improved, and the accuracy of the storage battery management is improved.
Specifically, in this embodiment, the output management module controls the operation state of the energy storage power station according to the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery, where:
when the voltage stability is normal, the output management module does not control the running state of the storage battery;
when the voltage stability is voltage fluctuation and the load condition is high load, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the current running storage batteries;
when the voltage stability is voltage fluctuation and the fluctuation condition is high fluctuation frequency, the output management module controls to close the currently operated storage battery and open other non-operated storage batteries, and the number of the other non-operated storage batteries is less than or equal to the number of the currently operated storage batteries;
when the voltage stability is short-time interruption and the working state of the storage battery is abnormal, the output management module controls to close the storage battery which is currently operated and open other non-operated storage batteries with the same closing number;
when the voltage stability is short-time interruption and the working state of the storage battery is normal, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the currently running storage batteries.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (10)
1. An energy storage power station operation monitoring management system, comprising:
the first acquisition module is used for periodically acquiring output parameters, energy storage parameters and environmental parameters of the storage battery in the energy storage power station according to a preset period;
the voltage analysis module is used for analyzing the voltage stability according to the output parameters of the storage battery;
the second acquisition module is used for acquiring the electricity consumption of the storage battery power supply area when the voltage stability is voltage fluctuation;
the electricity consumption analysis module is used for analyzing the load condition and the fluctuation condition according to the electricity consumption of the storage battery power supply area;
the charge analysis module is used for analyzing the working state of the storage battery according to the energy storage parameter of the storage battery when the voltage stability is short interruption;
the analysis and adjustment module is used for adjusting the analysis process of the load condition and the fluctuation condition according to the environmental parameters and adjusting the analysis process of the working state of the storage battery according to the environmental parameters;
the adjusting and optimizing module is used for analyzing the harmonic current according to the output parameters of the storage battery and optimizing the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery according to the harmonic current;
and the output management module is used for controlling the running state of the storage battery according to the voltage stability, the load condition, the fluctuation condition and the working state of the storage battery.
2. The energy storage power station operation monitoring management system according to claim 1, wherein the voltage analysis module calculates an average voltage of a current period according to an output voltage of the current period, compares a calculation result with the average voltage of the first two periods, and analyzes voltage stability according to the comparison result, wherein:
when U1 is not more than U/U -1 U2 is not less than and U1 is not less than U/U -2 When u2 is not more than, the voltage analysis module judges that the voltage stability is normal;
when U1 is not more than U/U -1 U/U is less than or equal to U2 -2 U1 or U1 is less than or equal to U/U -1 U/U is less than or equal to U2 -2 When the voltage is more than u2, the voltage analysis module judges that the voltage stability is voltage fluctuation;
when U/U -1 < U1/2 and U/U -2 And when the voltage is less than u1/2, the voltage analysis module judges that the voltage stability is short interruption.
3. The energy storage power station operation monitoring management system according to claim 2, wherein the electricity consumption analysis module is provided with a load analysis unit for comparing the electricity consumption of the current period with an electricity consumption threshold value and judging the load condition according to the comparison result, wherein:
when W/i/(W) Total (S) 1440) is more than or equal to w, the load analysis unit judges that the load condition is high load;
when W/i/(W) Total (S) 1440) < w, the load analysis unit determines that the load condition is a normal load;
wherein W represents the electricity consumption of the current period, W Total (S) The electricity consumption within 24 hours is represented, w represents the electricity consumption threshold, and the value range of the electricity consumption threshold is 1.4-w1.8。
4. The energy storage power station operation monitoring management system according to claim 3, wherein the electricity consumption analysis module is further provided with a fluctuation analysis unit for calculating a period average electricity consumption according to the electricity consumption, comparing each period electricity consumption with the period average electricity consumption, and counting the fluctuation times according to the comparison result, wherein:
when u1 is less than Wk/W' less than u2, the fluctuation analysis unit judges that the electricity consumption in the current analysis period is not fluctuated, and the fluctuation times are not counted;
when Wk/W 'is less than or equal to u1 or Wk/W' is less than or equal to u2, the fluctuation analysis unit judges the fluctuation of the electricity consumption in the current analysis period and counts the fluctuation times;
the fluctuation analysis unit analyzes the fluctuation condition according to the fluctuation times, wherein:
when G/64 is more than or equal to G, the fluctuation analysis unit judges that the fluctuation condition is high fluctuation frequency;
when G/64 is less than G, the fluctuation analysis unit judges that the fluctuation condition is low fluctuation frequency;
wherein, G represents the fluctuation times, G represents the fluctuation threshold, and the value range is as follows: g is more than or equal to 0.6 and less than 1.
5. The energy storage power station operation monitoring management system of claim 2, wherein the charge analysis module compares the total charge capacity with the remaining charge capacity and analyzes the operating state of the battery according to the comparison result, wherein:
when Q1/Q2 is more than or equal to Q, the charge analysis module judges that the working state of the storage battery is abnormal;
when Q1/Q2 is smaller than Q, the charge analysis module judges that the working state of the storage battery is normal;
wherein, Q1 represents the residual charge capacity, Q2 represents the total charge capacity, Q represents the charge threshold, and the range of the charge threshold is: q is more than or equal to 0.1 and less than or equal to 0.3.
6. The energy storage power station operation monitoring management system according to claim 3 or 4, wherein the analysis adjustment module is provided with an electricity adjustment unit for comparing the ambient temperature with a temperature threshold and adjusting the analysis process of the load condition and the fluctuation condition according to the comparison result, wherein:
when T is less than or equal to T1, the electricity consumption adjusting unit judges that the temperature is normal, and does not adjust the analysis process of the load condition and the fluctuation condition;
when T1 is more than or equal to T2, the electricity consumption adjusting unit judges that the temperature is higher, adjusts the electricity consumption threshold, and sets w1=wxt1/T for the adjusted electricity consumption threshold as w 1;
when T is more than T2, the electricity consumption adjusting unit judges that the temperature is too high, adjusts the fluctuation threshold, and sets g1=gxt2/T for the adjusted fluctuation threshold g 1;
wherein T represents the ambient temperature, T1 represents the first temperature threshold, T2 represents the second temperature threshold, and T1 is more than or equal to 30 and less than or equal to 40 and less than or equal to T2 and less than 50.
7. The energy storage power station operation monitoring management system of claim 5, wherein the analysis adjustment module is further provided with a charge adjustment unit for adjusting a charge threshold according to weather, wherein:
when the weather is overcast and rainy, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q1, and q1=qxα1 is set;
when the weather is strong wind, the charge adjusting unit adjusts the charge threshold value, the adjusted charge threshold value is q2, and q2=qxα2 is set;
when the weather is sunny, the charge adjusting unit does not adjust the charge threshold value;
wherein α1 represents a first adjustment parameter, and the value range is: alpha 1 is more than 1 and less than or equal to 1.2, alpha 2 represents a second adjustment parameter, and the value range is as follows: alpha 2 is more than or equal to 0.8 and less than 1.
8. The energy storage power station operation monitoring management system according to claim 1, wherein the adjustment optimization module is provided with a harmonic analysis unit for calculating a harmonic current according to an output parameter of the storage battery through a harmonic current calculation formula, and the harmonic analysis unit is provided with a harmonic current calculation formula as follows:
I1=j1×j2×AI×U×I×3
wherein, I1 represents harmonic current, j1 represents a load factor coefficient, and the value range is as follows: j1 is more than or equal to 0.5 and less than or equal to 0.8, j2 represents a treatment coefficient, and the value range is as follows: j2 is more than or equal to 0.2 and less than or equal to 1, AI represents harmonic current distortion rate, and the value range is as follows: AI is more than or equal to 0.1 and less than or equal to 0.35, wherein I represents the output current of the storage battery.
9. The energy storage power station operation monitoring management system according to claim 8, wherein the adjustment optimization module is provided with an adjustment optimization unit for optimizing an adjustment process of a load condition, a fluctuation condition, and an operation state of the storage battery according to a harmonic current, wherein:
when the I1/I is less than or equal to beta 1, the adjusting and optimizing unit judges that the harmonic current intensity is weak, and does not optimize the adjusting process of the load condition, the fluctuation condition and the working state of the storage battery;
when β1 is smaller than I1/I is smaller than or equal to β2, the adjustment optimization unit judges that the adjustment process of the electricity consumption threshold value is optimized in the harmonic current intensity, the optimized electricity consumption threshold value is w2, and w2=w1/(1+β1+β2) is set;
when beta 2 is less than I1/I and less than or equal to beta 3, the adjusting and optimizing unit judges that the harmonic current intensity is higher, optimizes the adjusting process of the fluctuation threshold, and sets g2=g1/(1+beta 2+beta 3) for the optimized fluctuation threshold, wherein g2 is the fluctuation threshold;
when I1/I > β3, the adjustment optimizing unit determines that the harmonic current intensity is too high, optimizes the adjustment process of the fluctuation threshold and the charge threshold, sets the optimized fluctuation threshold as g3, sets g3=g1/(1+2×β3), sets the optimized charge threshold as q3, and sets q3=qz/(1+β3);
wherein, beta 1 represents a first harmonic threshold value, beta 2 represents a second harmonic threshold value, beta represents a third harmonic threshold value, beta 1 is more than 0 and less than or equal to 0.015 and less than or equal to 0.03 and less than or equal to 0.05, qz represents an adjusted charge threshold value, z is a charge threshold value number, and the range of values is as follows: z= {1,2}.
10. The energy storage power station operation monitoring management system of claim 4 or 5, wherein the output management module controls the operation state of the energy storage power station according to voltage stability, load conditions, fluctuation conditions, and the operation state of the storage battery, wherein:
when the voltage stability is normal, the output management module does not control the running state of the storage battery;
when the voltage stability is voltage fluctuation and the load condition is high load, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the current running storage batteries;
when the voltage stability is voltage fluctuation and the fluctuation condition is high fluctuation frequency, the output management module controls to close the currently operated storage battery and open other non-operated storage batteries, and the number of the other non-operated storage batteries is less than or equal to the number of the currently operated storage batteries;
when the voltage stability is short-time interruption and the working state of the storage battery is abnormal, the output management module controls to close the storage battery which is currently operated and open other non-operated storage batteries with the same closing number;
when the voltage stability is short-time interruption and the working state of the storage battery is normal, the output management module controls to start other non-running storage batteries, and the number of the other non-running storage batteries is less than or equal to the number of the currently running storage batteries.
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