CN103138401A - Device and method for carrying out primary frequency modulation on generator unit by applying of power management unit (PMU) frequency information - Google Patents
Device and method for carrying out primary frequency modulation on generator unit by applying of power management unit (PMU) frequency information Download PDFInfo
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- CN103138401A CN103138401A CN2013100656001A CN201310065600A CN103138401A CN 103138401 A CN103138401 A CN 103138401A CN 2013100656001 A CN2013100656001 A CN 2013100656001A CN 201310065600 A CN201310065600 A CN 201310065600A CN 103138401 A CN103138401 A CN 103138401A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Abstract
The invention discloses a device for carrying out primary frequency modulation on a generator unit by applying of power management unit (PMU) frequency information. The device comprises a PMU device and a frequency data capturing and sending device which is used for analyzing the frequency data of the PMU device and sending the frequency data to a DCS or a DEH of the generator unit to enable the generator unit to carry out the primary frequency modulation according to the received frequency data. The input end of the frequency data capturing and sending device is connected with the PMU device or a communication network between the PMU device and a control center, and the output end of the frequency data capturing and sending device is connected with the DCS or the DEH of the generator unit. The frequency data capturing and sending device is used for capturing needed frequency data by utilizing of the detected data by the PMU device, the frequency data is sent to the DCS or the DEF of the generator unit, the frequency data is served as a primary frequency modulation standard by the DCS or the DEH of the generator unit, and therefore, the primary frequency modulation is enabled to be accurate.
Description
Technical field
The present invention relates to the generating set primary frequency regulation technical field, relate in particular to the apparatus and method that a kind of PMU of employing frequency information carries out generating set primary frequency regulation.
Background technology
Mains frequency is the important indicator of weighing the quality of power supply, and it is the important channel of keeping mains frequency that the unit that generates electricity by way of merging two or more grid systems participates in primary frequency modulation, and primary frequency function is one of necessary functions of generating set.Generating set primary frequency regulation is mainly realized by Logical Configuration in the DCS of generating set or DEH, when logic is judged speed discrepancy over the primary frequency modulation dead band, start corresponding control strategy, according to the frequency change size, ratio rapid adjustment generating set is exerted oneself as requested, keep and send out the power supply equilibrium,transient, reach the purpose of primary frequency modulation.
All detect frequency with rotational speed probe or frequency transmitter when generating set carries out primary frequency modulation mostly at present, as the frequency modulation standard.And existing rotational speed probe and frequency transmitter certainty of measurement are often inadequate, thus will cause the primary frequency modulation performance of a different dive to close requirement or misoperation when the detection error is excessive, thus cause the problem of primary frequency modulation tripping, malfunction or exercise amplitude not enough.
Summary of the invention
The purpose of this invention is to provide a kind of apparatus and method that can improve the primary frequency modulation precision.
The present invention adopts following technical proposals:
adopt the PMU frequency information to carry out the device of generating set primary frequency regulation, comprise the PMU device, also comprise frequency data crawl dispensing device, described frequency data crawl dispensing device is used for the frequency data of PMU device are resolved and are sent to DCS or the DEH of generating set, make generating set carry out primary frequency modulation according to the described frequency data that receive, the input of described frequency data crawl dispensing device connects the communication network between PMU device or PMU device and control centre, the output of described frequency data crawl dispensing device connects DCS or the DEH of generating set.
Described frequency data crawl dispensing device is the simulation main website, and the input of described simulation main website connects the communication network between PMU device or PMU device and control centre, and the output of simulation main website connects DCS or the DEH of generating set.
Described frequency data crawl dispensing device comprises mirror image switch and monitoring main frame, and the mouth that is mirrored of described mirror image switch connects a PMU device, and mirror port connects monitors main frame, DCS or the DEH of the output connection generating set of monitoring main frame.
Described frequency data crawl dispensing device comprises Communication processing module and communication interface, and the input of described Communication processing module connects the output of PMU device, and the output of Communication processing module connects DCS or the DEH of generating set by communication interface.
Use the MODBUS communications protocol between the DCS of described frequency data crawl dispensing device and generating set or DEH.
Adopt PMU device frequency information to carry out the method for generating set primary frequency regulation, comprise the following steps:
A: at first grasp dispensing device by frequency data and the PMU device is carried out the crawl of frequency data;
B: frequency data crawl dispensing device is sent to the data value that grabs DCS and the DEH of generating set;
C: generating set carries out the primary frequency modulation action in real time according to the described frequency data value that receives.
Described frequency data crawl dispensing device is the simulation main website, and the input of described simulation main website connects the communication network between PMU device or PMU device and control centre, and the output of simulation main website connects DCS or the DEH of generating set.
Described frequency data crawl dispensing device comprises mirror image switch and monitoring main frame, and the mouth that is mirrored of described mirror image switch connects a PMU device, and mirror port connects monitors main frame, DCS or the DEH of the output connection generating set of monitoring main frame.
Described frequency data crawl dispensing device comprises Communication processing module and communication interface, and the input of described Communication processing module connects the output of PMU device, and the output of Communication processing module connects DCS or the DEH of generating set by communication interface.
Use the MODBUS communications protocol between the DCS of described frequency data crawl dispensing device and generating set or DEH.
The frequency data that the present invention utilizes the PMU device to detect, grasp dispensing device by frequency data and the PMU device is carried out the parsing of required frequency data, and frequency data are sent to DCS or the DEH of generating set, the DCS of generating set or DEH be take these data as the primary frequency modulation standard, thereby make primary frequency modulation more accurate.
Description of drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is that the structure of embodiment 1 of the present invention connects block diagram;
Fig. 3 is that the structure of embodiment 2 of the present invention connects block diagram;
Fig. 4 is that the structure of embodiment 3 of the present invention connects block diagram.
Embodiment
as shown in Figure 1, adopt the PMU frequency information to carry out the device of generating set primary frequency regulation, comprise the PMU device, described PMU device and control centre carry out communication by Ethernet, also comprise frequency data crawl dispensing device, described frequency data crawl dispensing device is used for the frequency data of PMU device are resolved and are sent to DCS or the DEH of generating set, make generating set carry out primary frequency modulation according to this data value that receives, the input of described frequency data crawl dispensing device connects the communication network of PMU device or PMU device and control centre, the output of described frequency data crawl dispensing device connects DCS or the DEH of generating set.
Embodiment 1: as shown in Figure 2, described frequency data crawl dispensing device is the simulation main website, and the input of described simulation main website connects the output of PMU device, and the output of simulation main website connects DCS or the DEH of generating set.According to the standard-required of PMU, the PMU device all possesses the function of communicating by letter with a plurality of main websites (being described control centre) simultaneously.The present invention arranges an industrial computer and is the simulation main website, by simulation main website operation simulation center communicating by letter with PMU.After the simulation main website obtains frequency information, then by communication mode, frequency numerical value is sent into DCS or DEH.Calculate the primary frequency modulation actuating quantity by Logical Configuration in DCS or DEH, the adjustment generating set is exerted oneself and is reached the primary frequency modulation purpose.
Embodiment 2: as shown in Figure 3, described frequency data crawl dispensing device comprises the mirror image switch and monitors main frame, being mirrored mouthful of described mirror image switch connects a PMU device, and mirror port connects monitors main frame, the output of monitoring main frame connect generating set DCS or DEH.The present embodiment adopts the data image mode that PMU device and master station communication are monitored, the PMU device is issued the data Replica of main website to monitoring main frame, monitoring main frame resolves the data that copy by stipulations, find wherein required frequency data, then by communication modes, frequency is delivered to DCS or DEH.Not needing does not so need to carry out alternate acknowledge with the PMU device to the change of PMU device internal processes, can not increase the weight of the burden of PMU device.
embodiment 3: as shown in Figure 4, described frequency data crawl dispensing device comprises Communication processing module and communication interface, the input of described Communication processing module connects the output of PMU device, the output of Communication processing module connects DCS or the DEH of generating set by communication interface, the described Communication processing module of the present embodiment can use PMU device itself with the Communication processing module, also can increase a new Communication processing module, the Communication processing module directly is transferred to generating set DCS or DEH by communication port with the frequency data that measurement calculates like this.The installation cost of the present embodiment is minimum.
Adopt PMU device frequency information to carry out the method for generating set primary frequency regulation, comprise the following steps:
A: at first grasp dispensing device by frequency data and the PMU device is carried out the crawl of frequency data;
B: frequency data crawl dispensing device is sent to the data value that grabs DCS and the DEH of generating set;
C: generating set carries out the primary frequency modulation action in real time according to the described frequency data value that receives.
Use the MODBUS communications protocol between the DCS of described frequency data crawl dispensing device and generating set or DEH.Present main flow generating set DCS and DEH support MODBUS communications protocol mode, therefore can be by setting up the MODBUS communication, and the frequency signal that the frequency data grabbing device is obtained is transferred to generating set DCS or DEH.The MODBUS communication can adopt the modes such as RS485, RS232, Ethernet to carry out physical connection.
For the generating set DCS and the DEH that do not support the MODBUS communications protocol, can adopt other communications protocol and generating set DCS and DEH to carry out communication.For the DCS that does not support communication and DEH, also can adopt 8421 modes, be about to frequency signal and be converted to 16 tunnel switching value signal, by 16 way switch amount input signals, frequency signal is sent to generating set DCS.Owing to communication modes or 8421 modes, frequency data being transferred to DCS, and analog quantity 4 ~ 20mA transmission means of unconventional employing, data precision can not be affected.
The frequency data of frequency of utilization data crawl dispensing device crawl PMU device of the present invention are as the standard of generating set primary frequency regulation, described frequency data crawl dispensing device is not limited to above-mentioned three kinds of embodiment, can realize that the DCS or the DEH that resolve the frequency data of PMU device and be sent to generating set get final product.Solve the problem of the primary frequency modulation tripping, malfunction or the exercise amplitude not enough that cause not due to turbine speed probe and frequency transmitter certainty of measurement in DCS by said method, and then improved action qualification rate and the accuracy of generating set primary frequency regulation.
Claims (10)
1. adopt the PMU frequency information to carry out the device of generating set primary frequency regulation, comprise the PMU device, it is characterized in that: also comprise frequency data crawl dispensing device, described frequency data crawl dispensing device is used for the frequency data of PMU device are resolved and are sent to DCS or the DEH of generating set, make generating set carry out primary frequency modulation according to the described frequency data that receive, the input of described frequency data crawl dispensing device connects the communication network between PMU device or PMU device and control centre, the output of described frequency data crawl dispensing device connects DCS or the DEH of generating set.
2. employing PMU frequency information according to claim 1 carries out the device of generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device is the simulation main website, the input of described simulation main website connects the communication network between PMU device or PMU device and control centre, and the output of simulation main website connects DCS or the DEH of generating set.
3. employing PMU frequency information according to claim 1 carries out the device of generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device comprises the mirror image switch and monitors main frame, the mouth that is mirrored of described mirror image switch connects a PMU device, mirror port connects monitors main frame, and the output of monitoring main frame connects DCS or the DEH of generating set.
4. employing PMU frequency information according to claim 1 carries out the device of generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device comprises Communication processing module and communication interface, the input of described Communication processing module connects the output of PMU device, and the output of Communication processing module connects DCS or the DEH of generating set by communication interface.
5. according to claim 2-4 described employing of arbitrary claim PMU frequency informations carry out the device of generating set primary frequency regulation, it is characterized in that: use the MODBUS communications protocol between the DCS of described frequency data crawl dispensing device and generating set or DEH.
6. adopt PMU device frequency information to carry out the method for generating set primary frequency regulation, it is characterized in that: comprise the following steps:
A: at first grasp dispensing device by frequency data and the PMU device is carried out the crawl of frequency data;
B: frequency data crawl dispensing device is sent to the data value that grabs DCS and the DEH of generating set;
C: generating set carries out the primary frequency modulation action in real time according to the described frequency data value that receives.
7. employing PMU frequency information according to claim 6 carries out the method for generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device is the simulation main website, the input of described simulation main website connects the communication network between PMU device or PMU device and control centre, and the output of simulation main website connects DCS or the DEH of generating set.
8. employing PMU frequency information according to claim 6 carries out the method for generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device comprises the mirror image switch and monitors main frame, the mouth that is mirrored of described mirror image switch connects a PMU device, mirror port connects monitors main frame, and the output of monitoring main frame connects DCS or the DEH of generating set.
9. employing PMU frequency information according to claim 6 carries out the method for generating set primary frequency regulation, it is characterized in that: described frequency data crawl dispensing device comprises Communication processing module and communication interface, the input of described Communication processing module connects the output of PMU device, and the output of Communication processing module connects DCS or the DEH of generating set by communication interface.
10. according to claim 7-9 described employing of arbitrary claim PMU frequency informations carry out the device of generating set primary frequency regulation, it is characterized in that: use the MODBUS communications protocol between the DCS of described frequency data crawl dispensing device and generating set or DEH.
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| CN2013100656001A CN103138401A (en) | 2013-03-01 | 2013-03-01 | Device and method for carrying out primary frequency modulation on generator unit by applying of power management unit (PMU) frequency information |
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| CN2013100656001A CN103138401A (en) | 2013-03-01 | 2013-03-01 | Device and method for carrying out primary frequency modulation on generator unit by applying of power management unit (PMU) frequency information |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107359624A (en) * | 2017-07-18 | 2017-11-17 | 国网新疆电力公司电力科学研究院 | The method for improving unit primary frequency modulation response precision |
| CN110190611A (en) * | 2019-06-04 | 2019-08-30 | 国网山东省电力公司 | The primary frequency modulation bearing calibration and system of grid cyclic wave change rate based on PMU |
| CN112510752A (en) * | 2020-11-10 | 2021-03-16 | 中国石油化工股份有限公司 | Method and device for automatic switching on and off of primary frequency modulation of self-contained generator set |
| CN114156910A (en) * | 2021-10-18 | 2022-03-08 | 华电国际电力股份有限公司莱城发电厂 | AGC load decoupling control method and automatic optimizing device based on signal homology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107359624A (en) * | 2017-07-18 | 2017-11-17 | 国网新疆电力公司电力科学研究院 | The method for improving unit primary frequency modulation response precision |
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| CN110190611A (en) * | 2019-06-04 | 2019-08-30 | 国网山东省电力公司 | The primary frequency modulation bearing calibration and system of grid cyclic wave change rate based on PMU |
| CN110190611B (en) * | 2019-06-04 | 2020-11-06 | 国网山东省电力公司 | PMU-based primary frequency modulation correction method and system for power grid cycle change rate |
| CN112510752A (en) * | 2020-11-10 | 2021-03-16 | 中国石油化工股份有限公司 | Method and device for automatic switching on and off of primary frequency modulation of self-contained generator set |
| CN114156910A (en) * | 2021-10-18 | 2022-03-08 | 华电国际电力股份有限公司莱城发电厂 | AGC load decoupling control method and automatic optimizing device based on signal homology |
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Application publication date: 20130605 |