CN113794210B - Primary frequency modulation and inertia response coordination control method for new energy station - Google Patents
Primary frequency modulation and inertia response coordination control method for new energy station Download PDFInfo
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- CN113794210B CN113794210B CN202110991863.XA CN202110991863A CN113794210B CN 113794210 B CN113794210 B CN 113794210B CN 202110991863 A CN202110991863 A CN 202110991863A CN 113794210 B CN113794210 B CN 113794210B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
- H02J3/241—The oscillation concerning frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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Abstract
The invention discloses a primary frequency modulation and inertia response coordination control method of a new energy station, wherein a station controller transmits state information to a unit controller; the unit controller judges the primary frequency modulation state of the station controller according to the received station controller information, and determines the action of the primary frequency modulation action quantity to be adopted by the unit controller according to the primary frequency modulation state of the station controller and the local working strategy of the unit controller; the unit controller judges the inertia response state of the station controller according to the received station controller information, and determines the behavior of the inertia response action quantity to be adopted by the unit controller according to the inertia response state of the station controller and the local working strategy of the unit controller; the coordination control method ensures that strategies of the station controller and the unit controller cannot collide, simultaneously considers response speed and response precision, adapts to the working modes of the diversity of the new energy stations, and ensures that the strategies of the station controller and the unit controller are combined for application with high efficiency.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a primary frequency modulation and inertia response coordination control method for a new energy station.
Background
Along with the gradual increase of the duty ratio of the new energy in the power system, the responsibility of the new energy station for participating in the regulation of the power system is also scheduled, and the related standard of the successive departure clearly stipulates that the new energy station needs to have primary frequency modulation and inertia response functions.
Currently, the primary frequency modulation and inertia response is either done in the station controller or in the crew controller. The strategy is made in the station controller to improve the accuracy of station adjustment and is made in the unit controller to improve the speed of adjustment. How to coordinate the policies of the two controllers has not been a systematic approach.
Disclosure of Invention
The invention aims to solve the technical problem of providing a primary frequency modulation and inertia response coordination control method for a new energy station, which ensures that strategies of a station controller and a unit controller cannot collide, simultaneously gives consideration to response speed and response precision, adapts to the working modes of diversity of the new energy station, and ensures that the strategies of the station controller and the unit controller are combined for application with high efficiency.
In order to solve the technical problems, the invention provides a primary frequency modulation and inertia response coordination control method for a new energy station, which comprises a station controller and at least two unit controllers, wherein the method comprises the following steps:
the station controller transmits the information containing the primary frequency modulation and inertia response state to the unit controller;
the unit controller judges the primary frequency modulation state of the station controller according to the received station controller information, and determines the action of the primary frequency modulation action quantity to be adopted by the unit controller according to the primary frequency modulation state of the station controller and the local working strategy of the unit controller;
and the unit controller judges the inertia response state of the station controller according to the received station controller information, and determines the behavior of the inertia response action quantity to be adopted by the unit controller according to the inertia response state of the station controller and the local working strategy of the unit controller.
Preferably, the unit controller judges a primary frequency modulation state of the station controller, and if the station controller enters the primary frequency modulation state, the primary frequency modulation action quantity of the unit controller is canceled; if the station controller does not enter a primary frequency modulation state, adopting a primary frequency modulation action quantity of a unit controller;
the unit controller judges the inertia response state of the station controller, and if the station controller enters the inertia response state, the inertia response action quantity of the unit controller is canceled; and if the station controller does not enter an inertia response state, adopting the inertia response action quantity of the unit controller.
Preferably, the primary frequency modulation and inertia response state may be a trigger state of primary frequency modulation and inertia response.
Preferably, the primary frequency modulation and inertia response state may be an additional power value corresponding to the primary frequency modulation and inertia response.
Preferably, the process of cancelling the primary frequency modulation action amount of the unit controller is as follows: the frequency modulation action quantity of the unit controller can be linearly zeroed according to a certain slope.
Preferably, the process of cancelling the inertia response action quantity of the unit controller is as follows: the inertia response action quantity of the unit controller can be linearly zeroed according to a certain slope.
In order to solve the problems, the invention also provides a primary frequency modulation and inertia response coordination control method for the new energy station, which comprises a station controller and at least two unit controllers, and the method further comprises the following steps:
the unit controller uploads information containing primary frequency modulation and inertia response states of the unit controller to the station controller;
the station controller judges the primary frequency modulation state of the unit controller, and determines the action of primary frequency modulation action quantity to be adopted by the station controller according to the primary frequency modulation state of the unit controller and the local working strategy of the station controller;
and the station controller judges the inertia response state of the unit controller, and determines the behavior of the inertia response action quantity to be adopted by the station controller according to the inertia response state of the unit controller and the local working strategy of the station controller.
Preferably, the station controller judges a primary frequency modulation state of the unit controller, and if the unit controller enters the primary frequency modulation state, the station controller cancels the primary frequency modulation action quantity issued to the unit; if the unit controller does not enter a primary frequency modulation state, the station controller issues a primary frequency modulation action quantity;
the station controller judges the inertia response state of the unit controller, and if the unit controller enters the inertia response state, the inertia response action quantity issued to the unit by the station controller is canceled; and if the unit controller does not enter the inertia response state, the station controller issues inertia response action quantity.
Preferably, the station controller calculates the total primary frequency modulation action quantity requirement of the station, and equally distributes the action quantity to the unit controllers which do not enter primary frequency modulation.
Preferably, the station controller calculates the total inertia response action quantity requirement of the station, and distributes the action quantity equally to the unit controllers which do not enter the inertia response.
After the method is adopted, the station controller transmits the information containing the primary frequency modulation and inertia response state to the unit controller; the unit controller judges the primary frequency modulation state of the station controller according to the received station controller information, and determines the action of the primary frequency modulation action quantity to be adopted by the unit controller according to the primary frequency modulation state of the station controller and the local working strategy of the unit controller; the unit controller judges the inertia response state of the station controller according to the received station controller information, and determines the action of the inertia response action quantity to be adopted by the station controller according to the inertia response state of the station controller and the local working strategy of the unit controller.
Drawings
FIG. 1 is a schematic diagram of information interaction when a station controller frequency modulation command of a new energy station coordination control method of the invention is prioritized;
FIG. 2 is a logic flow diagram of generating a power command of a unit controller when a station controller frequency modulation command of a new energy station primary frequency modulation and inertia response coordination control method is prioritized;
FIG. 3 is a schematic diagram of information interaction when a unit controller frequency modulation command of the new energy station primary frequency modulation and inertia response coordination control method of the invention is prioritized;
fig. 4 is a logic flow diagram for generating a power down command of a station controller when a unit controller frequency modulation command of a new energy station primary frequency modulation and inertia response coordination control method of the invention is prioritized.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment discloses a primary frequency modulation and inertia response coordination control method of a new energy station, which comprises a station controller and at least two unit controllers, wherein the method comprises the following steps: the station controller transmits the information containing the primary frequency modulation and inertia response state to the unit controller;
the unit controller judges the primary frequency modulation state of the station controller according to the received station controller information, and determines the action of the primary frequency modulation action quantity to be adopted by the unit controller according to the primary frequency modulation state of the station controller and the local working strategy of the unit controller;
and the unit controller judges the inertia response state of the station controller according to the received station controller information, and determines the behavior of the inertia response action quantity to be adopted by the unit controller according to the inertia response state of the station controller and the local working strategy of the unit controller.
The unit controller judges the primary frequency modulation state of the station controller, and if the station controller enters the primary frequency modulation state, the primary frequency modulation action quantity of the unit controller is canceled; if the station controller does not enter a primary frequency modulation state, adopting a primary frequency modulation action quantity of a unit controller;
the unit controller judges the inertia response state of the station controller, and if the station controller enters the inertia response state, the inertia response action quantity of the unit controller is canceled; and if the station controller does not enter an inertia response state, adopting the inertia response action quantity of the unit controller.
Adding primary frequency modulation and inertia response status bits into information issued to a unit controller by the station controller, and setting relevant status bits when the station controller triggers primary frequency modulation or inertia response; meanwhile, the power instruction issued by the station controller to the unit is the sum of the single machine power instruction, the primary frequency modulation action quantity and the inertia response action quantity distributed according to the upper-level scheduling. Referring to fig. 1, fig. 1 illustrates contents included in information issued to a stack controller by a station controller in order to implement the present embodiment.
Before the primary frequency modulation or inertia response state position of the station controller is set, the unit controller calculates the action quantity according to the primary frequency modulation or inertia response strategy of the unit controller; after the primary frequency modulation or inertia response state position of the station controller is set, the unit controller cancels the action quantity of the primary frequency modulation or inertia response strategy. Referring to fig. 2, fig. 2 illustrates a process of generating a power command of the crew controller according to the present embodiment.
In this embodiment, the primary frequency modulation and inertia response state is a trigger state of primary frequency modulation and inertia response.
Example two
The present embodiment is based on the first embodiment, except that the primary frequency modulation and inertia response state may be an additional power value corresponding to the primary frequency modulation and inertia response.
In this embodiment, based on the first embodiment, the process of "cancelling the primary frequency modulation action amount of the unit controller" is as follows: the frequency modulation action quantity of the unit controller is reset to zero, the zero resetting process can be performed asymptotically, and a certain slope is set for linear zero resetting.
In this embodiment, based on the first embodiment, the process of "cancelling the inertia response action amount of the unit controller" is as follows: the inertia response action quantity of the unit controller is reset to zero, the zero resetting process can be performed asymptotically, and a certain slope is set for linear zero resetting.
Example III
The embodiment discloses a new energy station primary frequency modulation and inertia response coordination control method, which comprises a station controller and at least two unit controllers, and the method further comprises the following steps: the unit controller uploads information containing primary frequency modulation and inertia response states of the unit controller to the station controller;
the station controller judges the primary frequency modulation state of the unit controller, and determines the action of primary frequency modulation action quantity to be adopted by the station controller according to the primary frequency modulation state of the unit controller and the local working strategy of the station controller;
and the station controller judges the inertia response state of the unit controller, and determines the behavior of the inertia response action quantity to be adopted by the station controller according to the inertia response state of the unit controller and the local working strategy of the station controller.
The station controller judges the primary frequency modulation state of the unit controller, and if the unit controller enters the primary frequency modulation state, the primary frequency modulation action quantity issued to the unit by the station controller is canceled; if the unit controller does not enter a primary frequency modulation state, the station controller issues a primary frequency modulation action quantity;
the station controller judges the inertia response state of the unit controller, and if the unit controller enters the inertia response state, the inertia response action quantity issued to the unit by the station controller is canceled; and if the unit controller does not enter the inertia response state, the station controller issues inertia response action quantity.
Adding a primary frequency modulation and inertia response state bit into the information uploaded to the station controller by the unit controller, and setting a relevant state bit when the unit controller triggers primary frequency modulation or inertia response; meanwhile, the power instruction issued by the station controller to the unit is the sum of the single machine power instruction, the primary frequency modulation action quantity and the inertia response action quantity distributed according to the upper-level scheduling.
Referring to fig. 3, fig. 3 shows that for implementing the present embodiment, the crew controller uploads the information content to be included, and the station controller issues the information content to be included.
And calculating the total primary frequency modulation and inertia response action quantity demand of the station, uniformly distributing the primary frequency modulation action quantity to a unit controller in a non-uploading primary frequency modulation state, and uniformly distributing the inertia response action quantity to the unit controller in the non-uploading inertia response state. Referring to fig. 4, fig. 4 illustrates the instruction dispatch logic of the station controller.
The coordination control method ensures that strategies of the station controller and the unit controller cannot collide, simultaneously considers response speed and response precision, adapts to the working modes of the diversity of the new energy stations, and ensures that the strategies of the station controller and the unit controller are combined for application with high efficiency.
It should be understood that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the descriptions of the present invention and the accompanying drawings, or direct or indirect application in other relevant technical fields, are included in the scope of the present invention.
Claims (8)
1. A primary frequency modulation and inertia response coordination control method for a new energy station comprises a station controller and at least two unit controllers, and is characterized by comprising the following steps:
the station controller transmits the information containing the primary frequency modulation and inertia response state to the unit controller;
the unit controller judges the primary frequency modulation state of the station controller according to the received station controller information, and determines the action of the primary frequency modulation action quantity to be adopted by the unit controller according to the primary frequency modulation state of the station controller and the local working strategy of the unit controller;
the unit controller judges the inertia response state of the station controller according to the received station controller information, and determines the behavior of the inertia response action quantity to be adopted by the unit controller according to the inertia response state of the station controller and the local working strategy of the unit controller;
the unit controller judges the primary frequency modulation state of the station controller, and if the station controller enters the primary frequency modulation state, the primary frequency modulation action quantity of the unit controller is canceled; if the station controller does not enter a primary frequency modulation state, adopting a primary frequency modulation action quantity of a unit controller;
the unit controller judges the inertia response state of the station controller, and if the station controller enters the inertia response state, the inertia response action quantity of the unit controller is canceled; and if the station controller does not enter an inertia response state, adopting the inertia response action quantity of the unit controller.
2. The method for coordinated control of primary frequency modulation and inertia response of a new energy station according to claim 1, wherein the primary frequency modulation and inertia response state is a trigger state of primary frequency modulation and inertia response.
3. The method for coordinated control of primary frequency modulation and inertia response of a new energy station according to claim 1, wherein the primary frequency modulation and inertia response state is an additional power value corresponding to the primary frequency modulation and inertia response.
4. The method for coordinated control of primary frequency modulation and inertia response of a new energy station according to claim 1, wherein the process of canceling the primary frequency modulation action amount of the unit controller is as follows: and the frequency modulation action quantity of the unit controller is linearly zeroed according to a certain slope.
5. The method for coordinated control of primary frequency modulation and inertia response of a new energy station according to claim 1, wherein the process of canceling the inertia response amount of the unit controller is as follows: and the inertia response action quantity of the unit controller is linearly zeroed according to a certain slope.
6. A primary frequency modulation and inertia response coordination control method for a new energy station comprises a station controller and at least two unit controllers, and is characterized by comprising the following steps:
the unit controller uploads information containing primary frequency modulation and inertia response states of the unit controller to the station controller;
the station controller judges the primary frequency modulation state of the unit controller, and determines the action of primary frequency modulation action quantity to be adopted by the station controller according to the primary frequency modulation state of the unit controller and the local working strategy of the station controller;
the station controller judges the inertia response state of the unit controller, and determines the behavior of the inertia response action quantity to be adopted by the station controller according to the inertia response state of the unit controller and the local working strategy of the station controller;
the station controller judges the primary frequency modulation state of the unit controller, and if the unit controller enters the primary frequency modulation state, the primary frequency modulation action quantity issued to the unit by the station controller is canceled; if the unit controller does not enter a primary frequency modulation state, the station controller issues a primary frequency modulation action quantity;
the station controller judges the inertia response state of the unit controller, and if the unit controller enters the inertia response state, the station controller cancels the inertia response action quantity issued to the unit; and if the unit controller does not enter the inertia response state, the station controller issues inertia response action quantity.
7. The coordination control method for primary frequency modulation and inertia response of new energy station according to claim 6, wherein the station controller calculates total primary frequency modulation action amount requirement of the station, and distributes the action amount equally to the unit controller which does not enter primary frequency modulation.
8. The method for coordinated control of primary frequency modulation and inertia response of a new energy station according to claim 6, wherein the station controller calculates total inertia response action volume requirements of the station and distributes the action volume equally to the unit controllers which do not enter inertia response.
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| CN111934327A (en) * | 2020-06-30 | 2020-11-13 | 中国电力科学研究院有限公司 | Wind turbine generator primary frequency modulation and virtual inertia coordination control method and device |
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| CN112736988A (en) * | 2020-12-24 | 2021-04-30 | 西安交通大学 | New energy power system inertia estimation method considering influence of primary frequency modulation and droop control |
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| CN108054770B (en) * | 2017-12-31 | 2019-04-23 | 北京金风科创风电设备有限公司 | Photovoltaic power plant and primary frequency modulation control method thereof |
| CN110098622B (en) * | 2018-01-31 | 2021-04-13 | 北京金风科创风电设备有限公司 | Primary frequency modulation method and device for wind turbine generator |
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| CN111934327A (en) * | 2020-06-30 | 2020-11-13 | 中国电力科学研究院有限公司 | Wind turbine generator primary frequency modulation and virtual inertia coordination control method and device |
| CN112736988A (en) * | 2020-12-24 | 2021-04-30 | 西安交通大学 | New energy power system inertia estimation method considering influence of primary frequency modulation and droop control |
| CN112636374A (en) * | 2021-03-09 | 2021-04-09 | 沈阳微控新能源技术有限公司 | Primary frequency modulation and virtual inertia response control method and device for wind power station |
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