CN-121984090-A - Generator intelligent control method and device based on dynamic load and electronic equipment

Abstract

The application provides an intelligent control method and device for a generator based on dynamic load and electronic equipment, and belongs to the field of power grid fluctuation suppression. The method comprises the steps of counting power change times and power change values of a load in a preset duration based on electrical parameters of the load at a power grid side, selecting a working mode to be a constant power factor mode, a constant reactive power mode or an automatic regulation mode based on the power change times and the power change values, and controlling the total output power of the gas generator set under the three regulation modes based on operation state parameters of the super capacitor. According to the application, the power supply stability of the load can be kept through the adjustment of the super capacitor and the energy storage converter, the adjustment frequency of the gas generator set is reduced, and the power generation efficiency of the gas generator set is improved.

Inventors

• WANG XINLIANG
• WANG LONG

Assignees

• 天津博威动力设备有限公司

Dates

Publication Date

20260505

Application Date

20260408

Claims (10)

1. 1. The intelligent control method of the generator based on the dynamic load is characterized by being applied to an energy management unit in a gas power generation system, wherein the gas power generation system further comprises a gas power generation set, an energy storage converter, a super capacitor and a CT transformer, the direct current side of the energy storage converter is connected with the super capacitor, the alternating current side of the energy storage converter is respectively connected with the gas power generation set and the CT transformer, the CT transformer is used for collecting electrical parameters of a load at a power grid side, and the energy management unit is arranged in the energy storage converter and is used for collecting operation state parameters of the super capacitor; The method comprises the following steps: counting the power change times and the power change values of the load in a preset duration based on the electrical parameters of the load at the power grid side; If the power change times are smaller than the preset times and the power change value is smaller than or equal to the preset power change value, determining that the power regulation mode of the energy storage converter is a constant power factor mode; If the power change times are smaller than the preset times and the power change value is larger than the preset power change value, determining that the power regulation mode of the energy storage converter is a constant reactive power mode; If the power change times are greater than or equal to the preset times, determining that a power regulation mode of the energy storage converter is an automatic regulation mode, wherein the automatic regulation mode is a mode for regulating based on the voltage of the load; And controlling the total output power of the gas generator set in the constant power factor mode, the constant reactive power mode or the automatic regulation mode based on the operation state parameters of the super capacitor.
2. 2. The method of claim 1, wherein the operational state parameters of the super capacitor include voltage, current, and remaining power, and the total output power includes output active power and reactive power; Based on the operation state parameters of the super capacitor, controlling the total output power of the gas generator set in the constant power factor mode, wherein the control method comprises the following steps: calculating a target active power value actually required by the current load based on the voltage and the current of the current load; Calculating discharge power based on the voltage and the current of the super capacitor, calculating an active power value based on a preset power factor of the gas generator set and a reactive power set value of the gas generator set, and determining a first active power variation based on the active power value and the target active power value; If the super capacitor is determined to be in a preset discharge range based on the discharge power of the super capacitor and the residual electric quantity, controlling the super capacitor to compensate the first active power variable quantity, and controlling the sum of the output reactive power and the active power of the gas generator set to be unchanged; If the super capacitor is determined not to be in the preset discharge range based on the discharge power of the super capacitor and the residual electric quantity, controlling the gas generator set and the super capacitor to compensate the first active power variable quantity according to the dynamic distribution proportion, and keeping the output reactive power of the gas generator set unchanged.
3. 3. The method of claim 2, wherein the first active power variation comprises the gas generator set-compensated active power adjustment component and the supercapacitor-compensated active power adjustment component; the controlling the gas generator set and the super capacitor to compensate the first active power variation according to the dynamic allocation proportion comprises the following steps: Constructing a multi-objective constraint function based on the cycle life loss of the super capacitor, the regulation response speed of the gas generator set and the voltage deviation of the load, wherein the voltage deviation of the load is the absolute value of the difference value between the current voltage of the load and the rated voltage; Obtaining the dynamic allocation proportion based on the multi-objective constraint function; Multiplying the first active power variation by the dynamic allocation proportion to obtain an active power adjustment component compensated by the gas generator set and an active power adjustment component compensated by the super capacitor respectively.
4. 4. The method of claim 1, wherein the operational state parameters of the super-capacitor include voltage, current, and remaining power, and the total output power includes output reactive power and active power; Based on the operation state parameters of the super capacitor, controlling the total output power of the gas generator set in the constant reactive power mode comprises the following steps: calculating a target active power value of the current load based on the current voltage and current of the load, and calculating a difference value between the target active power value and an active power set value of the gas generator set to obtain a second active power variation; If the super capacitor is determined to be in the preset discharge range based on the discharge power of the super capacitor and the residual electric quantity, controlling the super capacitor to compensate the second active power variable quantity, and controlling the sum of the output reactive power and the active power of the gas generator set to be unchanged; and if the super capacitor is determined not to be in the preset discharge range based on the discharge power of the super capacitor and the residual electric quantity, controlling the gas generator set and the super capacitor to absorb and compensate the second active power variable quantity according to the dynamic distribution proportion, and keeping the output reactive power of the gas generator set unchanged.
5. 5. The method of claim 1, wherein the operational state parameter of the supercapacitor comprises a currently allowable discharge power limit; based on the operation state parameters of the super capacitor, controlling the total output power of the gas generator set in the automatic regulation mode comprises the following steps: Obtaining the active power of the load at the current voltage based on a preset voltage-active power curve in response to the current voltage of the load being greater than a preset voltage; Calculating a difference value between the active power and an active power threshold value, controlling the energy storage converter to be in a discharge state based on the difference value, and controlling the super capacitor to compensate the difference value according to a current allowable discharge power limit value; Responding to the fact that the current voltage of the load is smaller than the preset voltage, and obtaining reactive power of the load at the current voltage based on a preset voltage-reactive power curve; And controlling the energy storage converter to absorb the difference value according to the current allowable discharge power limit value, and controlling the sum of the output active power and the reactive power of the gas generator set to be unchanged.
6. 6. The method of claim 5, wherein the operational state parameter of the supercapacitor further comprises a residual capacity, and wherein the generating of the voltage-active power curve comprises: fitting to obtain a basic voltage-active power relation curve based on a voltage fluctuation range and a power factor of the load in a preset history period; And determining an active power compensation coefficient based on the residual electric quantity of the super capacitor, and multiplying the basic voltage-active power relation curve by the active power compensation coefficient to obtain the voltage-active power curve after dynamic correction.
7. 7. The method of claim 1, wherein the method further comprises: Acquiring an active power output value of the energy storage converter and the fuel consumption of the gas generator set in real time; calculating the current power generation efficiency of the gas generator set based on the active power output value and the fuel consumption; And if the current power generation efficiency is lower than a preset efficiency threshold, keeping the reactive power of the current load unchanged, and the residual electric quantity of the super capacitor is larger than a first electric quantity threshold, controlling the energy storage converter to increase active power output, and simultaneously controlling the gas generator set to reduce active power output so that the power generation efficiency of the gas generator set is larger than or equal to the preset efficiency threshold.
8. 8. The method of claim 7, wherein the method further comprises: And if the power generation efficiency of the gas generator set is continuously lower than a preset efficiency threshold value in the adjusted first duration and the residual electric quantity of the super capacitor is smaller than or equal to the first electric quantity threshold value, regulating the output active power of the gas generator set in advance by a second duration according to the voltage fluctuation characteristic and the power factor change trend of the load in the preset history period.
9. 9. The intelligent generator control device based on the dynamic load is characterized by being applied to an energy management unit in a gas power generation system, wherein the gas power generation system further comprises a gas power generation unit, an energy storage converter, a super capacitor and a CT transformer, the direct current side of the energy storage converter is connected with the super capacitor, the alternating current side of the energy storage converter is respectively connected with the gas power generation unit and the CT transformer, the CT transformer is used for collecting electrical parameters of a load at the power grid side, and the energy management unit is arranged in the energy storage converter and is used for collecting operation state parameters of the super capacitor; The device comprises: The data calculation module is used for counting the power change times and power change values of the load in a preset duration based on the electrical parameters of the load; The mode selection module is used for determining that the power regulation mode of the energy storage converter is a constant power factor mode if the power change times are smaller than preset times and the power change value is smaller than or equal to a preset power change value; If the power change times are smaller than the preset times and the power change value is larger than the preset power change value, determining that the power regulation mode of the energy storage converter is a constant reactive power mode; If the power change times are greater than or equal to the preset times, determining that a power regulation mode of the energy storage converter is an automatic regulation mode, wherein the automatic regulation mode is a mode for regulating based on the voltage of the load; and the power regulation and control module is used for controlling the total output power of the gas generator set in the constant power factor mode, the constant reactive power mode or the automatic regulation mode based on the operation state parameters of the super capacitor.
10. 10. An electronic device comprising a memory, a processor and a computer program stored in the memory and running on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 8 when the computer program is executed.

Description

Generator intelligent control method and device based on dynamic load and electronic equipment Technical Field The application belongs to the technical field of power grid fluctuation suppression, and particularly relates to an intelligent control method and device for a generator based on dynamic load and electronic equipment. Background At present, when the gas generator set encounters high-power fluctuation load equipment in an island operation mode, the load equipment has smaller power and is relatively stable when no load is applied, but the power is rapidly increased when work is applied, the power is reduced to be smaller after work is applied, the whole process is relatively short, and therefore the load detected by the gas generator set is easy to be neglected, and unstable conditions such as traveling cars and the like are caused. Meanwhile, when the gas generator set encounters high-power fluctuation load equipment, the working efficiency of the gas generator set can be reduced, and the energy consumption is increased. In the prior art, a capacitance compensation cabinet is developed, which can be used for compensating reactive loads on a high-voltage side and a low-voltage bus side, but has small effect of stabilizing the loads, and is difficult to meet the actual requirements of an actual gas generator set, so that an intelligent control method of a dynamic load generator is needed. Disclosure of Invention The application aims to provide a generator intelligent control method and device based on dynamic load and electronic equipment, so as to solve the technical problem in the background art, realize that the power supply of the load is kept stable through the adjustment of a super capacitor and an energy storage converter, reduce the adjustment frequency of a gas generator set and improve the power generation efficiency of the gas generator set. The application provides an intelligent control method of a generator based on dynamic load, which comprises an energy management unit in a gas power generation system, a gas power generation unit, an energy storage converter, a super capacitor and a CT transformer, wherein the direct current side of the energy storage converter is connected with the super capacitor, the alternating current side of the energy storage converter is respectively connected with the gas power generation unit and the CT transformer, the CT transformer is used for collecting electrical parameters of loads at a power grid side, and the energy management unit is arranged in the energy storage converter and is used for collecting operation state parameters of the super capacitor; the method comprises the following steps: Counting the power change times and the power change values of the load in a preset time based on the electrical parameters of the load at the power grid side; If the power change times are smaller than the preset times and the power change value is smaller than or equal to the preset power change value, determining that the power regulation mode of the energy storage converter is a constant power factor mode; if the power change times are smaller than the preset times and the power change value is larger than the preset power change value, determining that the power regulation mode of the energy storage converter is a constant reactive power mode; If the power change times are greater than or equal to the preset times, determining that the power regulation mode of the energy storage converter is an automatic regulation mode, wherein the automatic regulation mode is a mode for regulating based on the voltage of the load; and controlling the total output power of the gas generator set in a constant power factor mode, a constant reactive power mode or an automatic regulation mode based on the operation state parameters of the super capacitor. The application provides an intelligent control device of a generator based on dynamic load, which comprises an energy management unit in a gas power generation system, a gas power generation unit, an energy storage converter, a super capacitor and a CT transformer, wherein the direct current side of the energy storage converter is connected with the super capacitor, the alternating current side of the energy storage converter is respectively connected with the gas power generation unit and the CT transformer, the CT transformer is used for collecting electrical parameters of loads at the power grid side, and the energy management unit is arranged in the energy storage converter and is used for collecting operation state parameters of the super capacitor; The device comprises a data calculation module, a power control module and a power control module, wherein the data calculation module is used for counting the power change times and the power change values of the load in a preset duration based on the electrical parameters of the load; The mode selection module is used for determining that the power regulation mode of the e