CN112542858B

CN112542858B - Active power multicast group control regulating method and system for new energy and energy storage power station

Info

Publication number: CN112542858B
Application number: CN202011354235.2A
Authority: CN
Inventors: 彭世康; 孙锐; 傅美平; 袁方方; 张萌; 张鹏; 杨振宇; 范越; 李春来; 杨立滨
Original assignee: State Grid Corp of China SGCC; Xuji Group Co Ltd; XJ Electric Co Ltd; Xuchang XJ Software Technology Co Ltd; State Grid Qinghai Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Xuji Group Co Ltd; XJ Electric Co Ltd; Xuchang XJ Software Technology Co Ltd; State Grid Qinghai Electric Power Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2024-03-01
Anticipated expiration: 2040-11-26
Also published as: CN112542858A

Abstract

The method comprises the steps of determining an adjustable and increasable power supply equipment set and an adjustable and non-increasable power supply equipment set in the adjustable power supply equipment set according to real-time active power information of each power supply equipment of a power station when an AGC scheduling command is received, wherein the power supply equipment comprises a generator and/or energy storage equipment; according to the plan output active power, the adjustable and increased power supply equipment set information and the adjustable and non-increased power supply equipment set information corresponding to the AGC scheduling command, determining a multicast adjustment mode of active power output adjustment of the adjustable power supply equipment set, wherein the multicast adjustment mode comprises a multicast group control adjustment mode, an incremental adjustment mode of multicast group control firstly and then the like; and adjusting the adjustable and non-adjustable power supply equipment according to the determined multicast adjustment mode. The method solves the problem that the traditional multicast group control adjusting method adjusts the output active power of power supply equipment to be either too low or too much and seriously exceeds the standard.

Description

Active power multicast group control regulating method and system for new energy and energy storage power station

Technical Field

The invention relates to the technical field of electric power, in particular to a new energy and energy storage power station AGC multicast group control adjusting method and system.

Background

The renewable energy grid-connected power generation system capable of greatly developing wind energy, solar energy and the like is harmonious with the ecological environment and accords with the sustainable development strategy of the economy and society; the method is beneficial to enhancing the capacity of the power system for resisting war and disasters, is beneficial to improving the load balance of the power system, and can reduce line loss. The output active power of the wind power and photovoltaic grid-connected power generation system is influenced by weather variation, and the fluctuation is large, so that the safe and stable operation of a power grid is not facilitated, and therefore, an AGC (Automatic Generation Control, automatic power generation control) system is required to be installed for controlling the output active power of the wind-light power station.

The energy storage equipment system is an indispensable supporting technology for intelligent power grid, new energy access, distributed power generation, micro-power grid and electric automobile charging system development. The application of a large amount of renewable new energy sources, especially wind power generation and solar photovoltaic power generation, has randomness, intermittence and volatility, and large-scale access brings great challenges to power grid peak shaving, operation control, power supply quality and the like. The energy storage equipment system is added, so that the capacity of the power grid for admitting clean energy can be effectively improved, and the problem of safety and stability of the power grid caused by large-scale clean energy access is solved; the energy storage technology has the capability of peak clipping and valley filling, is beneficial to optimizing the energy management of the system, and improves the system efficiency and the equipment utilization rate; the energy storage technology is also beneficial to increasing the spare capacity of the system, improving the safety stability and the electric energy quality of the power grid, realizing the energy economy and improving the comprehensive benefit.

The AGC system carries out secondary adjustment on the active output of the power grid generator and the energy storage equipment so as to ensure that the generated active output and the active load are balanced, ensure that the system frequency is rated value, lead the regional tie line tide to be equal to the plan and minimize the regional operation cost. The power system requires the AGC control system to have rapidity and accuracy for controlling the active power output by the power station, requires the control response time not to exceed 10 seconds, and is suitable for controlling deviation to be smaller than 1% of installed capacity and overshoot to be smaller than 5% of installed capacity.

The large and medium-sized grid-connected new energy and energy storage power station generally comprises hundreds of power supply devices; in order for the power supply device to meet the power requirements of fast response AGC scheduling instructions, the power plant is typically equipped with a power regulator device, a multicast power regulator, that performs power generation control based on multicast messages. Therefore, large and medium-sized new energy and energy storage power stations are generally configured with AGC control system software for implementing multicast group control, and the output active power of each power supply device is controlled by an active power control mode of the multicast group control. The AGC multicast group control mode is a power control mode which evenly distributes the AGC target power among all adjustable power supply devices through a multicast power regulator to output active power of the power supply devices. And particularly, according to the AGC command, calculating the condition that the generated power needs to be increased, and issuing control commands to all the adjustable power supply equipment according to a multicast group control adjustment mode. The planned generated power of each adjustable power supply device is the product of the own maximum generated power and the multicast command power generation ratio.

When weather changes frequently, the actual power generation capacity of the new energy generator also fluctuates greatly, and at the moment, the traditional AGC multicast group control mode has difficulty in enabling the power station to output active power so as to meet the accuracy requirement and meet the limitation requirement on overshoot.

Disclosure of Invention

Object of the invention

The invention aims to provide a new energy and energy storage power station active power multicast group control regulating method and system, which are characterized in that power supply equipment is divided into adjustable and increased power supply equipment and adjustable and non-increased power supply equipment, active power, adjustable and increased power supply equipment set information and adjustable and non-increased power supply equipment set information are output according to a plan corresponding to an AGC scheduling command, a multicast regulating mode of active power output regulation of an adjustable power supply equipment set is determined, multicast group control regulation or incremental regulation such as multicast group control after the multicast group control is performed on each power supply equipment of the new energy and energy storage power station (called power station for short) in a targeted manner, and the control mode enables a generator of the power station to accurately output active power regulation under the condition that the power generation capacity greatly fluctuates, so that the accuracy requirement on the active power output by the power station is met.

(II) technical scheme

In order to solve the above problems, a first aspect of the present application provides a method for multicast group control adjustment of active power of a new energy source and an energy storage power station, including:

When an AGC scheduling command is received, determining an adjustable and addable power equipment set and an adjustable and non-addable power equipment set in the adjustable power equipment set according to real-time active power information of each power equipment of a power station, wherein the power station comprises a new energy power station or an energy storage power station, and the power equipment comprises a generator and/or energy storage equipment;

according to the plan output active power, the adjustable and increasable power supply equipment set information and the adjustable and non-increasable power supply equipment set information corresponding to the AGC scheduling command, determining a multicast adjustment mode of active power output adjustment of the adjustable power supply equipment set, wherein the multicast adjustment mode comprises a multicast group control adjustment mode, an incremental adjustment mode of multicast group control firstly and then the like;

and adjusting the adjustable and non-adjustable power supply equipment according to the determined multicast adjustment mode.

Specifically, the determining, according to the planned output active power, the adjustable and extendable power supply device set information and the adjustable and non-extendable power supply device set information corresponding to the AGC scheduling command, a multicast adjustment mode of active power output adjustment of the adjustable power supply device set specifically includes:

determining a target power delta incP according to the following formula (I):

inCP＝planP-exchP (1)

an adjustable target power generation ratio aimR0, an adjustable non-increasable target power generation ratio aimR1, an adjustable increasable target power generation ratio aimR2, a sensitivity ratio zeroR, an adjustable non-increasable power generation ratio curR1 are determined according to the following formula (ii):

Determining a total subtractive margin mayDecP for the set of adjustable power supply devices according to the following formula (iii):

mayDecP＝(curP1-minP1)+(curP2-minP2) (III)

wherein, the planP outputs active power for the plan corresponding to the AGC scheduling command; the extracp is the current total output active power of the power station; curP1 is the total actual power generation active power of the adjustable non-augmented power supply device, and curP2 is the total actual power generation active power of the adjustable augmented power supply device; maxP1 is the total maximum generated active power of the adjustable non-augmented power supply device, and maxP2 is the total maximum generated active power of the adjustable augmented power supply device; zeroP1 is the total active power sensitivity of the adjustable non-augmented power supply device, zeroP2 is the total active power sensitivity of the adjustable augmented power supply device; minP1 is the total minimum controllable generated active power of the adjustable non-augmented power supply device, and minP2 is the total minimum controllable generated active power of the adjustable augmented power supply device;

when the adjustable power supply equipment set contains 1 or more adjustable and increased power supply equipment, and the target power increment incP is larger than the total active power sensitivity zero P2 of the adjustable and increased power supply equipment set, and the target power increment incP is larger than 1.5 times of allowable deviation active power waveP:

if the adjustable power supply equipment set does not have the adjustable non-increased power supply equipment, or the adjustable target power generation ratio aimR0 is more than or equal to (1-zero), or the adjustable target power generation ratio aimR2 is less than or equal to the adjustable non-increased target power generation ratio aimR1, determining that the adjustment mode of the adjustable power supply equipment set is a multicast group control adjustment mode;

When the target power increment incP is less than 0 and the absolute value of the target power increment incP is greater than the total active power sensitivity of the set of adjustable and increasable power supply devices, and the absolute value of the target power increment incP is greater than 1.5 times the allowable deviation active power waveP, and the total subtraction margin mayDecP is greater than the total active power sensitivity of the set of adjustable and increasable power supply devices:

and if all the power supply devices in the adjustable power supply device set are adjustable and increased power supply devices, or all the power supply devices are adjustable and non-increased power supply devices, or the adjustable and increased target power generation ratio aimR2 is smaller than or equal to the adjustable and non-increased power generation ratio curR1, determining that the adjustment mode of the adjustable power supply device set is a multicast group control adjustment mode.

Specifically, in the multicast group control adjustment mode, the adjustable target power generation ratio aimR0 is used as a multicast command power generation ratio, and the multicast command power generation ratio is simultaneously issued to each power supply device in the set of adjustable power supply devices in a broadcast manner through a multicast power regulator, so that the power control unit of each power supply device performs active power generation power adjustment according to the formula (iv):

planP _i ＝ad _j R×maxP _i (IV)

wherein, adjR is the multicast command power generation ratio of the power station power supply equipment; planP _i Representing planned power generation power, maxP, of the i-th power supply device _i Separate tableThe maximum power generation of the i-th power supply apparatus is shown.

Specifically, the determining the multicast adjustment mode of the active power adjustment of the adjustable power supply device set according to the planned output active power, the adjustable and increased power supply device set information and the adjustable and non-increased power supply device set information corresponding to the AGC scheduling command further includes:

when the number of the power supply devices of the adjustable and expandable power supply device set is more than or equal to 10 and more than or equal to 20% of the total adjustable power supply devices, and the number of the power supply devices of the adjustable and non-expandable power supply device set reaches 1 or more:

when the target power increment incP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set and the target power increment incP is larger than 1.5 times of allowable deviation active power wave P, if the adjustable target power generation ratio aimR0 is smaller than (1-zero) and the adjustable and increasable target power generation ratio aimR2 is larger than the adjustable and unexpandable target power generation ratio aimR1, determining that the adjustment mode of the adjustable power supply equipment set is an incremental adjustment mode after multicast group control;

when the target power increment incP is smaller than 0, the absolute value of the target power increment incP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set, and meanwhile, the absolute value of the target power increment incP is larger than 1.5 times of the allowable deviation active power waveP, if the total subtraction margin mayDecP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set, and the adjustable and increasable power generation ratio aimR2 is larger than or equal to the adjustable and non-increasable power generation ratio curR1, determining that the adjustment mode of the adjustable and increasable power supply equipment set is a multicast group control and equal increment adjustment mode.

Specifically, in the incremental adjustment mode of multicast group control and the like, the adjustable incremental target power generation ratio aimR2 is used as a multicast command power generation ratio, and the multicast command power generation ratio is simultaneously issued to each power supply device in the adjustable power supply device set in a broadcast mode through a multicast power regulator, so that the power control unit of each power supply device performs active power generation power adjustment according to a formula (IV);

and then controlling each power supply device in the adjustable non-augmented power supply device set to output active power according to the planned generated power determined by the following formula (V):

wherein, planP1 _i For the planned power generation power of the ith adjustable non-increased power supply equipment, curP1 _i For the i-th adjustable non-increased power supply equipment, the active power for actual power generation, maxP1 _i The maximum generated active power of the power supply equipment can not be increased for the ith station.

Further, the active power multicast group control adjustment method further comprises the following steps: when the number of the power supply devices of the adjustable and increasable power supply device set is more than or equal to 1 and less than 10 or less than 20% of the total adjustable power supply devices, and the number of the power supply devices of the adjustable and non-increasable power supply device set reaches 1 or more:

when the target power increment incP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set and the target power increment incP is larger than 1.5 times of the allowable deviation active power wave P, if the adjustable target power generation ratio aimR0 is smaller than (1-zero) and the adjustable and increasable target power generation ratio aimR2 is larger than the adjustable and non-increasable target power generation ratio aimR1, determining that the adjustment mode of the adjustable power supply equipment set is an equal increment adjustment mode;

In the equi-delta regulation mode, the delta ratio dltR2 of the adjustable and additively power supply device is determined according to the following formula (vi), wherein 1 is taken when dltR2 > 1:

each power supply device in the set of adjustable incremental power supply devices is controlled to output active power according to a planned generated power determined by the following formula (VII):

planP2 _i ＝curP2 _i +dltR2×(maxP2 _i -curP2 _i ) (VII)

controlling each power supply device in the adjustable non-augmented power supply device set to output active power according to the planned generated power determined in the formula (V);

wherein, planP1i is the planned power generation power of the ith adjustable non-increasing power supply equipment, curP1i is the actual power generation active power of the ith adjustable non-increasing power supply equipment, maxP1i is the maximum power generation active power of the ith adjustable non-increasing power supply equipment, and planP2 _i For the planned power generation power of the ith adjustable and increased power supply equipment, curP2 _i Active power for actual power generation of i-th adjustable and increased power supply equipment, maxP2 _i Maximum power generation active power of i-th adjustable and increasable power supply equipment, curP2 _i The actual power generation active power of the power supply equipment can be increased for the ith station.

When the target power increment incP is smaller than 0, the absolute value of the target power increment incP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set, and meanwhile, the absolute value of the target power increment incP is larger than 1.5 times of the allowable deviation active power waveP, if the total decreasable margin mayDecP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set, and the adjustable and increasable target power generation ratio aimR2 is larger than or equal to the adjustable and non-increasable power generation ratio curR1, determining that the adjustment mode of the adjustable and increasable power supply equipment set is an equal increment adjustment mode;

in the equal increment adjustment mode, determining an increment ratio dltR2 of each power supply device in the set of adjustable and increasable power supply devices according to a formula (viii), and taking-1 when dltR2 < -1:

each power supply device in the set of adjustable incremental power supply devices is controlled to output active power according to a planned generated power determined by the following formula (ix):

planP2 _i ＝curP2 _i +dltR2×(curP2 _i -minP2 _i ) (IX)

wherein, planP1i is the planned power generation power of the ith adjustable non-increasable power supply equipment, curP1i is the actual power generation active power of the ith adjustable non-increasable power supply equipment, maxP1i is the maximum power generation active power of the ith adjustable non-increasable power supply equipment, minP2 is the total minimum controllable power generation active power of the adjustable increasable power supply equipment, and planP2 _i For the planned power generation power of the ith adjustable and increased power supply equipment, curP2 _i For the i-th adjustable and increased actual power generation active power of the power supply equipment, minP2 _i The minimum controllable generated active power of the power supply equipment can be increased for the ith station.

Further, the active power multicast group control adjustment method further comprises the following steps:

the target power generation ratio refR is determined according to the following formula (x):

wherein curP0 is the total actual power generated by the marker post generator; maxP0 is the total maximum power generation active power of the marker post generator;

when the target power increment incP is larger than the total active power sensitivity of the adjustable and increased power equipment set, and the target power increment incP is larger than 0.9 times of allowable deviation active power waveP and smaller than or equal to 1.5 times of allowable deviation active power waveP, and the adjustable and increased power equipment set contains 1 power equipment and more, the control method is as follows:

for the adjustable and expandable generator, the power generation ratio refR of the marker post and the maximum power generation active power maxP2 of the adjustable and expandable generator are used _i As the current power generation capacity of the generator, for the adjustable and adjustable energy storage equipment, the maximum power generation active power maxP2 of the adjustable and adjustable energy storage equipment is used _i Current power generation capability as an energy storage device; taking the difference value between the current power generation capacity and the actual power generation active power as the maximum increasable power; sequentially controlling power supply devices in the adjustable and expandable power supply device set according to the sequence of the maximum expandable power quantity of the adjustable and expandable power supply devices from large to small, and adjusting output power according to the current power generation capacity until the planned output active power corresponding to the AGC scheduling command is met; or alternatively

When the absolute value of the target power increment incP is larger than the total active power sensitivity of the adjustable and increasable power supply equipment set, and meanwhile, the target power increment incP is larger than or equal to-1.5 times of allowable deviation active power waveP and smaller than-0.9 times of allowable deviation active power waveP, and the total subtraction margin mayDecP of the adjustable power supply equipment is larger than the total active power sensitivity of the adjustable power supply equipment, sequentially controlling all power supply equipment in the adjustable power supply equipment set according to the sequence of the maximum reducible power quantity of all power supply equipment in the adjustable power supply equipment set from large to small until the planned output active power corresponding to the AGC scheduling command is met.

When the absolute value of the target power increment incP is smaller than or equal to 0.9 times of the allowable deviation active power waveP; or alternatively

When the absolute value of the target power increment incP is smaller than or equal to the total active power sensitivity of the adjustable and increased power supply equipment set; or alternatively

When the target power increment incP is larger than 0.9 times of allowable deviation active power waveP, and the adjustable power supply equipment set does not contain adjustable and increased power supply equipment; or alternatively

When the target power increment incP is smaller than-0.9 times of allowable deviation active power waveP and the total subtraction margin mayDecP of the adjustable power supply device is smaller than or equal to the total active power sensitivity of the adjustable power supply device, the control operation is not exported.

In a second aspect of the present application, a new energy and energy storage power station active power multicast group control adjustment system is provided, including:

the first determining module is used for determining an adjustable and increased power equipment set and an adjustable and non-increased power equipment set in the adjustable power equipment set according to real-time active power information of each power equipment of the power station when the AGC scheduling command is received, wherein the power station comprises a new energy power station or an energy storage power station, and the power equipment comprises a generator and/or energy storage equipment;

the second determining module is used for determining a multicast adjustment mode of active power adjustment of the adjustable power supply equipment set according to the planned output active power, the adjustable and increased power supply equipment set information and the adjustable and non-increased power supply equipment set information corresponding to the AGC scheduling command, wherein the multicast adjustment mode comprises a multicast group control adjustment mode and an incremental adjustment mode of multicast group control first and then the like;

And the adjusting module is used for adjusting the adjustable and non-adjustable power supply equipment according to the determined multicast adjusting mode.

(III) beneficial effects

The power supply equipment is divided into the adjustable and increasable power supply equipment and the adjustable and non-increasable power supply equipment, active power, adjustable and increasable power supply equipment set information and adjustable and non-increasable power supply equipment set information are output according to a plan corresponding to an AGC scheduling command, a multicast adjusting mode of active power output adjustment of the adjustable power supply equipment set is determined, multicast group control adjustment or incremental adjustment such as multicast group control is performed on each power supply equipment of a new energy source and an energy storage power station in a targeted manner, and the like, so that an electric generator of the power station can accurately output active power adjustment under the condition that the power generation capacity greatly fluctuates, and the accuracy requirement of the active power output by the power station is met.

Drawings

FIG. 1 is a flow chart of a method for multicast group control adjustment of active power of a new energy source and an energy storage power station;

FIG. 2 is a flow chart of a method for calculating the adjustment ratio and adjustment type of the active output of an adjustable power supply device for a new energy source and energy storage power station according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for performing active power multicast group control adjustment in a new energy and energy storage power station according to an embodiment of the present invention.

Detailed Description

The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.

Referring to fig. 1, the invention provides a new energy and energy storage power station active power multicast group control adjustment method, which comprises the following steps:

step 101: when an AGC scheduling command is received, determining an adjustable and addable power equipment set and an adjustable and non-addable power equipment set in the adjustable power equipment set according to real-time active power information of each power equipment of a power station, wherein the power station comprises a new energy power station or an energy storage power station, and the power equipment comprises a generator and/or energy storage equipment;

step 102: according to the plan output active power, the adjustable and increasable power supply equipment set information and the adjustable and non-increasable power supply equipment set information corresponding to the AGC scheduling command, determining a multicast adjustment mode of active power output adjustment of the adjustable power supply equipment set, wherein the multicast adjustment mode comprises a multicast group control adjustment mode, an incremental adjustment mode of multicast group control firstly and then the like;

Step 103: and adjusting the adjustable and non-adjustable power supply equipment according to the determined multicast adjustment mode.

Specifically, the adjustable and increased power supply device refers to a new energy generator which outputs power generation power under the control of a control command and does not reach MPPT (maximum power point tracking) power, or an energy storage device which outputs power discharge active power under the control of the control command and does not reach maximum power discharge active power, and the residual capacity of the energy storage device is in a permitted discharge range, and the power supply device also has the capability of increasing output power upwards. The adjustable non-augmented power supply device refers to a new energy generator which outputs power generation power under the control of a control command and reaches MPPT power, namely a new energy generator which is corresponding to the control command and has planned power generation power larger than the current MPPT power value, or an energy storage device which outputs power amplification active power under the control of the control command and has maximum power amplification active power or residual capacity lower than the minimum capacity allowed to be amplified, wherein the power supply device has no capability of increasing output power temporarily.

The power supply equipment is divided into adjustable and increased power supply equipment and adjustable and non-increased power supply equipment, active power, adjustable and increased power supply equipment set information and adjustable and non-increased power supply equipment set information are output according to a plan corresponding to an AGC scheduling command, a multicast adjusting mode of active power output adjustment of an adjustable power supply equipment set is determined, multicast group control adjustment or incremental adjustment such as multicast group control is performed on each power supply equipment of a power station in a targeted manner, and accuracy requirements on active power output by the power station can be met even if the power generation capacity fluctuates greatly.

determining a target power delta incP according to the following formula (I):

inCP＝planP-eXChP (I)

mayDecP＝(curP1-minP1)+(curP2-minP2) (III)

if all the power supply devices in the adjustable power supply device set are adjustable and adjustable power supply devices, or all the power supply devices are adjustable and non-adjustable power supply devices, or the adjustable and adjustable target power generation ratio aimR2 is smaller than the adjustable and non-adjustable power generation ratio curR1, determining that the adjustment mode of the adjustable power supply device set is a multicast group control adjustment mode.

PlanP _i ＝adjR×maxP _i (IV)

wherein, adjR is the multicast command power generation ratio of the power station power supply equipment; planP _i Representing planned power generation power, maxP, of the i-th power supply device _i Respectively representing the maximum power generation of the i-th power supply device.

Further, the determining the multicast adjustment mode of the active power adjustment of the adjustable power supply device set according to the planned output active power, the adjustable and increased power supply device set information and the adjustable and non-increased power supply device set information corresponding to the AGC scheduling command further includes:

Further, the multicast group control active power control method further comprises the following steps: when the number of the power supply devices of the adjustable and increasable power supply device set is more than or equal to 1 and less than 10 or less than 20% of the total adjustable power supply devices, and the number of the power supply devices of the adjustable and non-increasable power supply device set reaches 1 or more:

planP2 _i ＝curP2 _i +dltR2×(maxP2 _i -curP2 _i ) (VII)

when the target power increment incP is smaller than 0, the absolute value of the target power increment incP is larger than the total active power sensitivity of the adjustable incremental generator set, and meanwhile, the absolute value of the target power increment incP is larger than 1.5 times of the allowable deviation active power waveP, if the total reducible margin mayDecP is larger than the total active power sensitivity of the adjustable generator set, and the adjustable incremental target power generation ratio aimR2 is larger than or equal to the adjustable non-incremental power generation ratio curR1, determining that the adjustment mode of the adjustable generator set is an equal increment adjustment mode;

planP2 _i ＝curP2 _i +dltR2×(curP2 _i -minP2 _i ) (IX)

Further, the multicast group control active power control method further comprises the following steps:

Wherein curP0 is the total actual power generation active power of the marker post power supply device; maxP0 is the total maximum generated active power of the marker post power supply device;

The invention also provides a new energy and energy storage power station active power multicast group control and regulation system, which comprises:

The system embodiments and the method embodiments of the present invention correspond to each other one by one, and specific descriptions and effects refer to the method embodiments, which are not described herein.

The following is one embodiment of the present invention:

the adjustable power supply devices in this embodiment are classified into two types: an adjustable and scalable power supply device and an adjustable and scalable power supply device. The distinction between an adjustable and a non-adjustable power supply device is temporary and dynamic. As the external weather conditions change and the power control unit adjusts the output power of the device, they can be switched to each other.

1. Generating power of power supply device

In order to facilitate the control of the output power of the power supply apparatuses, each power supply apparatus is configured with properties such as actual generated power, maximum generated power, planned generated power, minimum controllable generated power, sensitivity power, and the like. The actual generated power refers to the generated active power actually output by the power supply device in operation. The maximum power refers to the peak maximum power output active power of the wind-light new energy generator under the condition of sufficient wind power or illumination, or the maximum power output active power of the energy storage device. The planned generated power refers to generated output active power corresponding to a control command sent by an external control system to a control unit of the power supply device itself. The minimum controllable power generation refers to the minimum planned power generation which can be responded and executed by a control unit of the new energy generator and does not cause the generator to stop; or the maximum charging active power (taking a negative value) of the energy storage device. The sensitivity power refers to the maximum deviation between the actual output generated power and the planned generated power after the power supply device responds and executes the control command when the control command power value received by the power supply device is within the self power generation output capacity range, and reflects the fluctuation range of the output active power of the power supply device after receiving the active power control command within the actual power generation capacity range.

For the ith power supply equipment, use maxP _i 、planP _i 、minP _i 、zeroP _i 、curP _i Respectively representing the maximum generated power, the planned generated power, the minimum controllable generated power, the sensitivity power and the actual generated power of the power supply equipment, wherein the subscript i represents that the single power supply equipment is in the power supply equipment setIs a sequence number of (c). Has a minP of 0 to less than or equal to _i ≤planP _i ≤maxP _i ，zeroP _i >0，0≤curP _i ≤maxP _i 。

1.2 Power Generation ratio of Power supply apparatus

In the AGC control system, the categories of the power supply devices and some statistical parameters of the generated power are shown in table 1:

TABLE 1 categories of Power supply devices and statistical parameters of Power generated

The total generated active power of each type in the table refers to the total added value of the generated active power corresponding to each power supply device in the same type of power supply device set.

In response to the AGC scheduling command, the AGC control system establishes an active output control strategy of the power supply device, and then uses a very important parameter, namely, a Generation Ratio (Ratio). The power generation ratio of the power supply apparatus is mainly: an actual power generation ratio, a sensitivity ratio, a minimum power generation ratio, a target power generation ratio, and the like.

The actual power generation ratio refers to the ratio of the total actual power generation active power to the total maximum power generation active power of a class of power supply equipment set. There are three types of actual power generation ratios, namely: the calculation formulas of the post power generation ratio refR, the adjustable non-amplified power generation ratio curR1 and the adjustable amplified power generation ratio curR2 are as follows:

Sensitivity ratio, which is the ratio of the total active power sensitivity of the adjustable power supply device to the total maximum generated active power, is expressed by the zeroR, and the calculation formula is as follows:

the minimum power generation ratio is the ratio of the total minimum controllable generated active power to the total maximum generated active power of the adjustable power supply equipment, and is expressed by minR, and the calculation formula is as follows:

the AGC target power increment, also referred to as AGC target power shortage, refers to the difference between the planned output power corresponding to the AGC scheduling command and the actual total output power of the new energy source and the energy storage power station (hereinafter referred to as the power station). The AGC target power increment is represented by incP and is calculated as:

the target power generation ratio refers to the ratio of the total planned power generation active power to the total maximum power generation active power of a class of power supply equipment set after bearing the AGC target power increment. There are three categories of target power generation ratios, namely: the calculation formulas of the adjustable target power generation ratio aimR0, the adjustable non-adjustable target power generation ratio aimR1 and the adjustable target power generation ratio aimR2 are as follows:

in the above formula, curP0, curP1 and curP2 are respectively the total actual power generation active power of the marker post generator, the adjustable non-increased power supply equipment and the adjustable increased power supply equipment; the maxP0, the maxP1 and the maxP2 are respectively the total maximum power generation active power of the marker post generator, the adjustable non-increased power supply equipment and the adjustable increased power supply equipment; zeroP1 and zeroP2 are respectively the total active power sensitivity of the adjustable non-adjustable and adjustable power supply device. The minP1 and the minP2 are respectively adjustable and non-adjustable and adjustable total minimum controllable power generation active power of the adjustable and adjustable power supply equipment. The extracp is the current total output active power of the power station, also called as exchange active power, and can be acquired through collection at a public connection branch between the power station and a large power grid; loadP is the total load active power including the network loss in the power station; the planP outputs active power for a plan corresponding to the AGC scheduling command; incP is the AGC target power delta. The calculated value of each type of target power generation ratio is 1 if the calculated value is larger than 1; if the ratio is smaller than the minimum power generation ratio minR, the ratio is taken as minR.

The output power control mode of the power supply equipment of the multicast group control is as follows:

the AGC multicast group control mode is a group power control mode which issues output power control commands to all adjustable power supply devices by means of a multicast power controller device. Based on the traditional multicast group control adjustment mode, the invention combines the control modes of an equal-proportion increment adjustment mode based on the maximum generated power, an equal-proportion increment adjustment mode based on an adjustment margin, a unit optimization adjustment mode based on the maximum generation ratio and the like, and provides an accurate comprehensive AGC multicast group control mode.

2.1 multicast group control adjustment

The multicast power regulator is generally installed in large and medium-sized grid-connected new energy and energy storage power stations, and the multicast power regulator can send remote regulation instructions to all power supply equipment of the whole station at one time in a UDP multicast mode so as to improve the power regulation response speed of the whole power supply equipment. It has two modes of regulation, namely, regulation according to a percentage mode and regulation according to a power value mode. When the power is regulated in a percentage mode, the multicast command provides a percentage value, and each adjustable power supply equipment control system takes the power corresponding to the same percentage value of the maximum power generation power as the planned power generation power to control the power supply equipment to output active power. When the power is regulated in a power value mode, the control system of each adjustable power supply device uses the power value provided by the multicast command as the planned power generation power to control the power supply device to output active power, and the power supply device is suitable for the condition that the maximum output active power of each power supply device in the power station is identical to each other.

In the multicast group control regulation mode, after the AGC control system receives the scheduling command, according to the current power supply equipment operation condition of the power station, the AGC target power command is converted into a multicast control command, and then the multicast control command is sent to a multicast power regulator, and the multicast power regulator broadcasts the command to all the adjustable power supply equipment at one time. If the power generation ratio of the multicast control command is adjR, the i-th adjustable power supply device plans the power generation power to be:

planP _i ＝adjR×maxP _i (1)

wherein, adjR is the multicast command power generation ratio of the power station power supply equipment; planP _i 、maxP _i Respectively representing the planned generated power and the maximum generated power of the ith adjustable power supply equipment.

The multicast group control regulation mode has the advantages of high response speed and capability of rapidly sending remote regulation instructions to the control units of all the adjustable power supply devices. The disadvantage is that each power supply device is treated indiscriminately and not intelligent enough. The method does not identify the actual power generation capacity of each adjustable power supply device, and can indifferently send out remote regulation commands with the same power generation ratio to any one adjustable power supply device, and certain adjustable power supply devices can not reach the planned power generation power corresponding to the remote regulation commands because of limited actual power generation capacity, so that the output power of the whole station can not reach the target value of the scheduling requirement.

In AGC control systems, there are two methods of calculating the multicast commanded power generation ratio. The first calculation method is to adopt a mode that all adjustable power supply devices bear the target power shortage of AGC, and the power generation ratio of the multicast command is the adjustable target power generation ratio aimR0. When the target power generation ratio is large, the method is adopted to control, so that the power generation ratio shared by each adjustable power supply device is high, the actual output power of the non-adjustable power supply devices in the adjustable power supply devices cannot reach the output power tasks allocated to the non-adjustable power supply devices, or some adjustable and adjustable power supply devices are changed into adjustable and non-adjustable power supply devices, the actual output power is smaller, and finally the total output power of the power station cannot reach the target power required by AGC (automatic gain control), and the accuracy requirement cannot be met. Particularly when the power station has some power supply equipment which is in an adjustable and non-increasable state for some reason, the power station can be in a state of undergenerated power frequently.

The second calculation method adopts a mode that all adjustable and increased power supply devices bear the target power shortage of AGC, and the power generation ratio of the multicast command is the adjustable and increased target power generation ratio aimR2. When the method is adopted for control, the accuracy requirement can be generally met. However, when some temporary adjustable non-increased power supply devices (such as generators temporarily blocked by the cloud) become adjustable increased power supply devices, the output of the power station may suddenly rise, so that the total output power exceeds the target value of the scheduling requirement, and the exceeding amount may not meet the requirement defined by the specification. Particularly when the number of adjustable and scalable power devices is small in proportion to the number of adjustable power devices, the power generation rate of the multicast command will be large. After the command is issued, if a large number of adjustable non-increasable power supply devices are changed into adjustable increasable power supply devices, the overshoot will be very serious.

2.2 unit optimization adjustment mode based on maximum power generation ratio

The adjustment principle of the unit optimization adjustment mode is that the target output power required by the scheduling is realized by controlling the output of the least power supply equipment, so as to meet the requirement of quick response to the scheduling command.

The unit optimizing and adjusting mode based on the maximum power generation ratio is an improvement on the common unit optimizing and adjusting mode, namely, the unit optimizing and adjusting mode sets the actual power generation capacity of the adjustable and expandable power supply equipment to be the product of the configured maximum power generation power and the given maximum power generation ratio. If the generated power needs to be increased, the AGC control system in the adjusting mode adjusts the adjustable and increased power supply equipment one by one, and the output power of the AGC control system is maximally adjusted to the product of the maximum output power and the maximum generation ratio. If the ith adjustable and increased power supply equipment is adjusted, the planned generated power is as follows:

wherein, maxAP _i 、maxUP _i 、maxP _i 、curP _i 、zeroP _i 、planP _i The current power generation capacity, the margin, the configured maximum power generation power, the actual power generation power, the sensitivity power and the planned power generation power of the ith power supply equipment are respectively calculated; maxR is given maximum power generationRatio of; incP is the AGC target power delta. The function max { a, b } represents a large value between the values a and b.

The maximum power generation ratio maxR is in a range between the minimum power generation ratio minR and 1, namely, the minR is less than or equal to maxR and less than or equal to 1. When maxr=1, the method is a common unit optimization adjustment mode. In the unit optimizing and adjusting mode, if maxR is multiplied by maxP _i <curP _i +zeroP _i Then maximum planned generation power maxAP _i ≈curP _i maxUP capable of increasing margin _i <zeroP _i At this time, the power supply apparatus is not required to be adjusted, and the next power supply apparatus is selected for processing.

Because the weather conditions of the positions of all new energy generators in a new energy power station are basically the same, the actual power generation capacity of the adjustable and expandable generator is very similar to that of the marker post generator; the maximum power generation ratio maxR for the adjustable generator is therefore the target power generation ratio refR, i.e. ready-to-use (refR x maxP _i ) To estimate the actual power generation capacity of the ith adjustable incremental generator. For energy storage devices in an energy storage power station or a new energy power station, the actual capacity of the energy storage device is only related to the residual capacity of the energy storage device, and the energy storage device is not basically influenced by weather environmental changes; therefore, the maximum power generation ratio maxR of the adjustable and increasable energy storage device is taken to be 1, namely the actual power generation capacity of the adjustable and increasable energy storage device is the maximum power generation capacity of the adjustable and increasable energy storage device.

When the power generation power needs to be increased, the common unit optimizing and adjusting mode assumes that the power generation output capacity of each adjustable generator is configured maximum power generation power, and because the actual power generation capacity of the generator often does not reach the configured maximum power generation power, multiple wheels need to be adjusted, so that the overall adjusting response speed is reduced; the unit optimization adjustment mode taking the power generation ratio of the standard pole as the maximum power generation ratio is adopted, so that the actual power generation power of the adjustable generator after adjustment can easily reach the planned power generation power required by the control command, and the actual output power of the power station can reach the target power required by the dispatching after one round of adjustment in most cases.

When the scheduling command requires to reduce the generated power, the unit optimizing and adjusting mode based on the maximum power generation ratio is the same as the common unit optimizing and adjusting mode, namely, when a single adjustable power supply device is adjusted, the scheduled generated power is calculated by adopting the formula (3) and is used as a remote adjusting command to be issued to a control unit of the adjustable power supply device.

In the formula, decP is AGC target power decrement, is the opposite number of AGC target power increment, and has decp= -incP; maxDP _i 、minP _i 、curP _i 、planP _i The reducible margin, the minimum controllable generated power, the actual generated power and the planned generated power of the ith adjustable power supply device are respectively represented.

The unit optimization adjustment mode based on the maximum power generation ratio is not generally used alone, but is used as an auxiliary adjustment mode of a multicast group control mode. When the multicast group control adjustment mode is adopted, if the target value issued at the time of scheduling is very close to the exchange power value actually output at the present, the power generation ratio of the power station power supply equipment receiving the round multicast control command is very small in phase difference with the power generation ratio issued by the previous round multicast control command, so that the adjustment effect cannot be achieved; at the moment, a round of unit optimization adjustment mode based on the maximum power generation ratio is carried out, so that the output power of the power station accurately reaches the target value of the scheduling requirement.

Referring to fig. 2 and 3, the embodiment provides a method for multicast group control adjustment of active power of a new energy source and an energy storage power station, which specifically includes:

1. calculating control mode and regulation ratio of active output of adjustable power supply equipment

In the active power multicast group control regulation method of the new energy and the energy storage power station, the control modes aiming at the active power regulation of the adjustable power supply equipment comprise four types: 1. and (3) unit optimization adjustment based on the maximum power generation ratio, 2, multicast group control adjustment, 3, multicast group control and then equal incremental adjustment, and 4, equal incremental adjustment. The adjustment ratio and the adjustment execution strategy corresponding to different control modes are different.

The unit optimization regulation mode based on the maximum power generation ratio is used for the situation that the absolute value of the AGC target power increment is small, and the unit optimization regulation mode based on the maximum power generation ratio is adopted for executing a control strategy on the whole adjustable power supply equipment; the calculated regulation ratio is taken as the maximum power generation ratio of the unit optimization regulation mode, the new energy power station is taken as a target power generation ratio refR, and the energy storage power station is taken as 1.

When the multicast group control adjustment mode is carried out, a multicast group control command is issued to all the adjustable power supply devices, the planned power generation power of each adjustable power supply device is the product of the maximum power generation power of each adjustable power supply device and the multicast command power generation ratio, the calculated adjustment ratio is used as the multicast command power generation ratio, and the adjustable target power generation ratio aimR0 is taken.

When the incremental adjustment modes of multicast group control and the like are performed, multicast group control commands are issued to all the adjustable power supply devices, the calculated adjustment ratio is used as a multicast command power generation ratio, and the adjustable target power generation ratio aimR2 is taken for issuing multicast control commands. Then, for all adjustable non-incremental generators, an equal proportion incremental adjustment mode based on the maximum power is forced to be executed, and the incremental ratio of the incremental adjustment mode is taken as 2 times of sensitivity ratio; and (3) forcibly executing the operation of adjusting 0 of the output active power for all the adjustable non-addable energy storage devices. For the ith adjustable non-increased power supply equipment, the planned power generation power is

In the formula, the zeroR is the sensitivity ratio of the adjustable power supply equipment; planP1 _i 、curP1 _i 、maxP1 _i Respectively representing the planned power generation power, the actual power generation power and the maximum power generation power of the ith adjustable non-increasable power supply equipment.

Because the multicast group control command destroys the planned generated power of all the adjustable non-augmented power supply devices, making their planned generated power no longer satisfy equation (4); after the multicast command is issued, the control command is issued one by one to all the adjustable non-augmented power supply devices according to the planned generated power calculated by the formula (4), so as to ensure that the power of the power station which is oversupplied to the large power grid does not exceed the overshoot limit value specified by the power grid system for the power station after the adjustable non-augmented power supply devices are changed into the adjustable augmented power supply devices.

Firstly, executing the multicast group control command can make the total output power of the power station quickly reach the target power required by the AGC scheduling command, and improve the response speed of the power station to the scheduling command. Then, an anti-overdriving control operation is performed for the adjustable non-augmented power supply device, which, although taking time, does not affect the rapidity and accuracy of the power station response to the scheduling command since it does not affect the total output power value of the power station. The control unit of the adjustable power supply device processes the control command of the multicast power regulator and adjusts the output power of the power generation unit to reach the power value corresponding to the control command, and the process takes a few seconds to tens of seconds. The anti-overdriving operation of the adjustable non-augmented power supply device is essentially a preventive operation performed with the adjustable augmented power supply device for a period of several seconds to several tens of seconds in response to the multicast command.

And an equal increment adjustment mode, wherein an equal-proportion increment adjustment mode based on an adjustment margin is firstly implemented on the adjustable and increasable power supply equipment, and then an equal-proportion increment adjustment mode based on the maximum power with the increment ratio of 2 times of sensitivity is implemented on the adjustable and non-increasable power supply equipment. The advantage of this control flow is the same as the advantage of the processing sequence in the incremental adjustment mode, such as multicast group control first and then.

Unlike the first multicast group control and then equal incremental adjustment, the equal incremental adjustment is not mandatory for the control operation of the adjustable non-scalable power supply device. Because the adjustable power supply device does not influence the planned power generation power of the adjustable non-adjustable power supply device when performing the adjustment operation on the adjustable power supply device; so for a specific piece of adjustable non-augmented power supply equipment, if the difference between the planned generated power issued by the power supply equipment before the operation of the power supply equipment and the current actual generated power of the power supply equipment is not more than 2 times of sensitivity power, the power supply equipment does not need to be controlled by the adjustment of the power supply equipment. Therefore, when the number of the adjustable and increasable power supply devices is small, the equal-increment adjustment mode has advantages in terms of execution speed and limitation of overshoot compared with the equal-increment adjustment mode after multicast group control.

The overall process flow for calculating the control mode and the adjustment ratio of the active power output of the adjustable power supply device is shown in fig. 2, and the overall processing logic is as follows:

1) The control mode is set as the unit optimization adjustment mode in the following cases:

when an increased active force is required, an adjustable, scalable power supply device is present, and the AGC target power delta incP is less than the total sensitivity power zero 2 of the adjustable, scalable power supply device.

When a reduced active force is desired, the AGC target power reduction decP (the inverse of the incremental power incP) is less than the total sensitivity power zero (i.e., zero p1+zero p2) of all adjustable power supply devices.

2) In the following cases other than the above, the control mode is set to the multicast group control adjustment mode:

all power supply devices are adjustable and adjustable power supply devices.

When the active power output needs to be increased, an adjustable and increased power supply device exists, and the adjustable target power generation ratio is close to 1.0 (such as aimR0> 1.0-zero), and the adjustable and increased target power generation ratio is not higher than the adjustable and non-increased power generation target ratio (aimR 2 is less than or equal to aimR 1).

When the power output is required to be reduced, all power supply equipment is adjustable non-increased power supply equipment, or the adjustable increased target power generation ratio is not higher than the adjustable non-increased power generation ratio (aimR 2 is less than or equal to curR 1).

3) In addition to the above situation, there are both adjustable and non-adjustable power supply devices, if the number of the adjustable and non-adjustable power supply devices is large (for example, 1/5 or more of the total number of the adjustable power supply devices and the specific number is not less than 10), the control mode is set to be an incremental adjustment mode such as multicast group control before the like; otherwise, the control mode is set to be an equal increment adjustment mode.

The adjustment principle is as follows: preferentially enabling the output power to reach a target value as soon as possible; and the method can prevent a great amount of over-power from suddenly appearing. Therefore, in order to reach the target value as soon as possible, multicast group control is used more, and equipartition group control is used less; when the number of the adjustable power supply devices meets a certain requirement, multicast group control can be used. If the generated power of the adjustable and increased power supply equipment reaches the target value only by means of adjusting the generated power, multicast group control adjustment is firstly performed on the adjustable power supply equipment, so that the total output power of the power station reaches the target power value rapidly; and then, an equal-proportion incremental adjustment mode based on the maximum power and used for preventing the excessive emission is implemented on the adjustable non-increasable power supply equipment.

2. Executing control strategy according to control mode type and adjustment ratio

A control strategy execution flow of the new energy and energy storage power station active power multicast group control regulation method is shown in figure 3.

And when the control mode type is 1, performing unit optimization adjustment, and executing a control strategy according to a unit optimization adjustment mode based on the maximum power generation ratio.

When the control mode type is 2-multicast group control adjustment, the calculated multicast command adjustment ratio is utilized to issue a multicast group control command to the multicast power regulator.

When the control mode type is 3, firstly multicast group control and then equal incremental adjustment are performed, firstly, a multicast group control command is issued to a multicast power regulator by using the calculated multicast adjustment ratio; and then, forcing an equal proportion incremental adjustment mode based on the maximum power for preventing the excessive sending of all the adjustable non-increasable power supply equipment.

When the control mode type is 4-equal increment adjustment, firstly, executing an equal-proportion increment adjustment mode based on adjustment margin on all adjustable and increasable power supply equipment by using the calculated increment adjustment ratio; and then executing an equal-proportion incremental adjustment mode based on the maximum power for the adjustable non-increasable power supply equipment, wherein the equal-proportion incremental adjustment mode is used for preventing overdriving.

The invention provides a new energy and energy storage power station active power multicast group control regulating method and system, which are based on the traditional multicast group control regulating mode, add new control modes such as an equal proportion increment regulating mode based on the maximum generated power, an equal proportion increment regulating mode based on regulating margin, a unit optimizing regulating mode based on the maximum generating ratio and the like; the power supply equipment with adjustable power is divided into two types of adjustable and increased power supply equipment and adjustable and non-increased power supply equipment, and different control and adjustment modes are respectively implemented for each type of adjustable power supply equipment; the system also provides four control modes of unit optimization adjustment, multicast group control adjustment, incremental adjustment after multicast group control and the like, and adopts different control modes according to different running current situations of power station power supply equipment.

The method and the system for regulating the active power multicast group of the new energy and energy storage power station are suitable for AGC control system software of a wind power station, a solar photovoltaic power station, other new energy power stations and energy storage power stations which are provided with multicast power regulators. The method has the advantages of simultaneously considering the rapidity and the accuracy of the response to the dispatching command, effectively limiting the overshoot of the output power of the power station, and having good application value. The application of active power monitoring and energy management systems of practical large and medium-sized photovoltaic power stations, wind power stations and energy storage power stations proves that the AGC control software product adopting the method has the characteristics of high speed and high accuracy in response to AGC scheduling commands, the safe and stable operation of a power grid is well maintained, stable and high-quality electric energy is provided for users, and high user satisfaction is obtained.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims

1. The utility model provides a new energy and energy storage power station active power multicast group control adjusting method which is characterized by comprising the following steps:

according to the determined multicast regulation mode, regulating the adjustable and non-adjustable power supply equipment;

the method for determining the multicast regulation mode of active power output regulation of the adjustable power supply equipment set according to the plan output active power, the adjustable and increased power supply equipment set information and the adjustable and non-increased power supply equipment set information corresponding to the AGC scheduling command specifically comprises the following steps:

determining a target power delta incP according to the following formula (I):

（Ⅰ）

（Ⅱ）

（Ⅲ）

if all the power supply devices in the adjustable power supply device set are adjustable and adjustable power supply devices or all the power supply devices are non-adjustable and adjustable power supply devices or the adjustable and adjustable target power generation ratio aimR2 is smaller than or equal to the adjustable and non-adjustable power generation ratio curR1, determining that the adjustment mode of the adjustable power supply device set is a multicast group control adjustment mode;

In the multicast group control adjustment mode, the adjustable target power generation ratio aimR0 is used as a multicast command power generation ratio, and the multicast command power generation ratio is simultaneously issued to each power supply device in the adjustable power supply device set in a broadcast manner through a multicast power regulator, so that the power control unit of each power supply device performs active power generation power adjustment according to a formula (IV):

（Ⅳ）

2. The method for active power multicast group control adjustment according to claim 1, wherein the determining the multicast adjustment mode of active power adjustment of the set of adjustable power supply devices according to the planned output active power, the set of adjustable and scalable power supply devices, and the set of adjustable and scalable power supply devices corresponding to the AGC scheduling command further comprises:

3. The active power multicast group control adjustment method according to claim 2, wherein the adjustable and increasable target power generation ratio aimR2 is used as a multicast command power generation ratio in a multicast group control and equal increment adjustment mode, and the multicast command power generation ratio is simultaneously issued to each power supply device in the set of adjustable power supply devices in a broadcast manner through a multicast power adjuster, so that a power control unit of each power supply device performs active power generation power adjustment according to formula (iv);

（Ⅴ）

4. The active power multicast group control adjustment method according to claim 2, further comprising: when the number of the power supply devices of the adjustable and increasable power supply device set is more than or equal to 1 and less than 10 or less than 20% of the total adjustable power supply devices, and the number of the power supply devices of the adjustable and non-increasable power supply device set reaches 1 or more:

（Ⅵ）

（Ⅶ）

（Ⅴ）

wherein, planP1i is the planned power generation power of the ith adjustable non-increasing power supply equipment, curP1i is the actual power generation active power of the ith adjustable non-increasing power supply equipment, maxP1i is the maximum power generation active power of the ith adjustable non-increasing power supply equipment, and planP2 _i For the planned power generation power of the ith adjustable and increased power supply equipment, curP2 _i Active power for actual power generation of i-th adjustable and increased power supply equipment, maxP2 _i The maximum generated active power of the power supply equipment can be increased for the ith station.

5. The active power multicast group control adjustment method according to claim 4, further comprising: when the number of the power supply devices of the adjustable and increasable power supply device set is more than or equal to 1 and less than 10 or less than 20% of the total adjustable power supply devices, and the number of the power supply devices of the adjustable and non-increasable power supply device set reaches 1 or more:

（Ⅷ）

（Ⅸ）

controlling each power supply device in the adjustable non-augmented power supply device set to output active power according to the planned generated power determined in the formula (V); wherein, the minP2 is the total minimum controllable generated active power of the adjustable and increased power supply equipment, and the planP2 _i For the planned power generation power of the ith adjustable and increased power supply equipment, curP2 _i For the i-th adjustable and increased actual power generation active power of the power supply equipment, minP2 _i The minimum controllable generated active power of the power supply equipment can be increased for the ith station.

6. The active power multicast group control adjustment method according to claim 1, further comprising:

（Ⅹ）

7. The active power multicast group control adjustment method according to claim 1, further comprising:

And when the target power increment incP is smaller than-0.9 times of allowable deviation active power waveP and the total subtraction margin mayDecP of the adjustable power supply equipment is smaller than or equal to the total active power sensitivity of the adjustable power supply equipment, performing no outlet control operation.

8. A new energy source and energy storage power station active power multicast group control adjustment system based on the new energy source and energy storage power station active power multicast group control adjustment method as claimed in any one of claims 1-7, characterized by comprising: