CN105929330B - A kind of determination method and system of generating set primary frequency regulation response time - Google Patents
A kind of determination method and system of generating set primary frequency regulation response time Download PDFInfo
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- CN105929330B CN105929330B CN201610233471.6A CN201610233471A CN105929330B CN 105929330 B CN105929330 B CN 105929330B CN 201610233471 A CN201610233471 A CN 201610233471A CN 105929330 B CN105929330 B CN 105929330B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/34—Testing dynamo-electric machines
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Abstract
The present invention relates to a kind of frequency modulation field of thermal power generation unit, in particular to a kind of determination method of frequency modulation response time.A kind of determination method of generating set primary frequency regulation response time includes the following steps: that (1) revolving speed official post unit is arranged in DCS control system and carries out primary frequency modulation movement；(2) unit primary frequency modulation test data is acquired by the data acquisition unit of DCS control system；(3) it is exported after storing collected test data by storage unit, forming curves figure；(4) it is labeled as moment T in the graph in the moment that primary frequency modulation action command issues0, the corresponding unit actual load of the point is Q；After primary frequency modulation action command issues, unit actual load changes (Pe is unit rated load) when Q exceeds Q ± 0.5%Pe, is denoted as moment T1.This method can accurately calculate the response time of primary frequency modulation test.
Description
Technical field
The present invention relates to a kind of frequency modulation field of thermal power generation unit, in particular to a kind of determination side of frequency modulation response time
Method.
Background technique
100MW and the above unit primary frequency regulation of power network performance test be electric system it is important relate to net pilot project, at present
The country has had the test method of specification, science to the test of Large-scale machine set primary frequency modulation performance, has issued and has implemented relevant examination
Directive/guide and control of acceptance are tested, but from the test guidance and control of acceptance that publication is implemented, we are it is seen that still lack to unit
The determination method of primary frequency modulation test response time unification, causing cannot be scientific, accurate when carrying out the test of unit primary frequency modulation
Calculating determine the response time, seriously affect to unit primary frequency modulation performance it is correct judgement and evaluation.It is therefore desirable to establish
A kind of calculating of generating set primary frequency regulation response time determines method, can make primary frequency modulation test specification and standardization, give
Dispatching of power netwoks provides the technical basis of standardization, for guaranteeing the stabilization of mains frequency, improves the safety of operation of power networks and steady
It is qualitative, promote the fast development of power grid to have great importance.
Summary of the invention
The present invention proposes the determination method and system of primary frequency modulation response time a kind of.
A kind of determination method of generating set primary frequency regulation response time of the present invention, it is characterised in that include the following steps:
(1) revolving speed official post unit primary frequency modulation unit is set in DCS control system and carries out primary frequency modulation movement；
(2) unit primary frequency modulation test data is acquired by the data acquisition unit of DCS control system；
(3) it is exported after storing collected test data by storage unit, forming curves figure；
(4) it is labeled as moment T0 in the graph in the moment that primary frequency modulation action command issues, the moment, T0 was corresponding
Unit actual load is Q；After primary frequency modulation action command issues, when unit actual load changes Q beyond Q ± 0.5%Pe, note
For moment T1, wherein Pe is unit rated load；
(5) the obtained primary frequency modulation response time: T=T1-T0.
Preferably, the rotational speed difference being arranged in DCS control system is between ± 4 r/min~± 11r/min.
It is further preferred that the rotational speed difference being arranged in DCS control system is ± 4 r/min.
It is further preferred that the rotational speed difference being arranged in DCS control system is ± 11 r/min.
It is further preferred that the rotational speed difference being arranged in DCS control system is ± 6r/min.
The method of the invention can accurately determine the unit primary frequency modulation response time, be determined using this method
Start time and terminal can accurately calculate the response time of primary frequency modulation test, by primary frequency modulation response time data and phase
After answering performance indicator to compare, it can be used as initial data and determine whether primary frequency modulation response time index is qualified, effectively improves machine
Group primary frequency modulation test efficiency.
The system of determining generating set primary frequency regulation response time of the present invention a kind of, including DCS control system, it is described
It include sequentially connected primary frequency modulation control unit, data acquisition unit, data storage cell, data point in DCS control system
Analyse unit and execution unit.
Preferably, comparator interconnected and trigger are equipped in the data analysis unit.
The system of determining generating set primary frequency regulation response time of the present invention a kind of, passes through primary frequency modulation control unit
Movement and data analysis unit analysis processing can effectively and accurately determine primary frequency modulation response starting time and end
The point time improves unit primary frequency modulation test efficiency precisely to judge whether the primary frequency modulation response time is normal, this system
Connection structure is simple, as a result export it is clear and easy to understand, it is high-efficient, can industrialized production.
Detailed description of the invention
Fig. 1 is the attachment structure schematic diagram of the system of generating set primary frequency regulation response time of the present invention.
1- primary frequency modulation control unit in figure；2- data acquisition unit；3- data storage cell；4- data analysis unit；
5- execution unit.
Specific embodiment
Embodiment 1.
A kind of determination method of generating set primary frequency regulation response time of the present invention, includes the following steps:
(1) the primary frequency modulation unit 1 that revolving speed official post unit is arranged in DCS control system carries out primary frequency modulation movement；
(2) unit primary frequency modulation test data is acquired by the data acquisition unit 2 of DCS control system；
(3) it is exported after storing collected test data by data storage cell 3, forming curves figure；
(4) it is labeled as moment T0 in the graph in the moment that primary frequency modulation action command issues, the moment corresponding machine
Group actual load is Q；After primary frequency modulation action command issues, (Pe is when unit actual load variation Q exceeds Q ± 0.5%Pe
Unit rated load), it is denoted as moment T1；
(5) the obtained primary frequency modulation response time: T=T1-T0.
Rotational speed difference described in the present embodiment is preferably ± 4 r/min.
When work, the rotational speed difference of ± 4 r/min is set first in DCS control system, makes unit primary frequency modulation list
Member 1 carries out primary frequency modulation movement and takes 5% according to speed governor droop, rated speed 3000 by taking rated load 600MW unit as an example
R/min, speed dead bend are the parameter setting of ± 2 r/min, and it is 4MW, primary frequency modulation actuating quantity that coefficient of frequency modulation, which is obtained by calculation,
For 8MW；Then data acquisition unit 2 acquires unit primary frequency modulation test data, exports after being stored by data storage cell 3,
Forming curves figure is denoted as time T0 when 1 primary frequency modulation action command of primary frequency modulation unit sending time instant in the graph,
When discovery unit actual load variation Q exceeds Q ± 0.5%Pe in the graph, it is denoted as moment T1, primary tune is obtained by calculation
The frequency response time: T=T1-T0.
The present embodiment setting speed difference is ± 4 r/min, primary frequency modulation actuating quantity can be made to reach 8MW, which can
So that curve graph generates biggish change in frequency modulation moment, it is more conducive to exchange the accurate determination of frequency response time beginning and end,
To realize the Accurate Determining to the primary frequency modulation response time.
Embodiment 2.
The present embodiment is substantially the same manner as Example 1, the difference is that rotational speed difference described in the present embodiment is ± 6 r/min.
When rotational speed difference is set as ± 6 r/min, by taking rated load 600MW unit as an example, 5% is taken according to speed governor droop,
Rated speed is 3000 r/min, and speed dead bend is the parameter setting of ± 2 r/min, and it is 4MW that coefficient of frequency modulation, which is obtained by calculation,
Primary frequency modulation actuating quantity is 16MW.
Embodiment 3.
The present embodiment is substantially the same manner as Example 1, the difference is that rotational speed difference described in the present embodiment is ± 11 r/min.
When rotational speed difference is set as ± 11 r/min, by taking rated load 600MW unit as an example, taken according to speed governor droop
5%, rated speed is 3000 r/min, and speed dead bend is the parameter setting of ± 2 r/min, and coefficient of frequency modulation, which is obtained by calculation, is
4MW, primary frequency modulation actuating quantity are 36MW.
Embodiment 4.
A kind of system of determining generating set primary frequency regulation response time described in the present embodiment, including DCS control system, institute
State includes sequentially connected primary frequency modulation control unit 1, data acquisition unit 2, data storage cell 3, number in DCS control system
According to analytical unit 4 and execution unit 5, wherein being equipped with comparator interconnected and trigger in the data analysis unit 4.
Under normal operating conditions, the primary frequency modulation control unit 1 of DCS control system, data acquisition unit 2, data storage
Unit 3, data analysis unit 4 and execution unit 5 are ± 4 r/min when inputting a rotational speed difference to primary frequency modulation control unit 1
When the pumping signal of~± 11r/min, data acquisition unit 2 is acquired the data information of actual load Q, then passes through number
It stores and exports according to storage unit 3；The pumping signal is sent to data analysis unit 4 simultaneously, by data analysis unit 4 by the letter
Number timing node generated is denoted as T0, when the comparator in data analysis unit 4 detects actual load Q beyond ± 0.5%Pe
When bound, which is denoted as T1 by trigger action, while triggering the movement of execution unit 5, is calculated by execution unit 5
Response time T=T1-T0.
Claims (7)
1. a kind of determination method of generating set primary frequency regulation response time, it is characterised in that include the following steps:
Revolving speed official post unit primary frequency modulation unit (1) is set in DCS control system and carries out primary frequency modulation movement；
Unit primary frequency modulation test data is acquired by the data acquisition unit (2) of DCS control system；
It is exported after collected test data is stored by data storage cell (3), forming curves figure；
It is labeled as moment T0 in the graph in the moment that primary frequency modulation action command issues, the moment corresponding unit actual negative
Lotus is Q；After primary frequency modulation action command issues, when unit actual load changes Q beyond Q ± 0.5%Pe, it is denoted as moment T1,
Wherein, Pe is unit rated load；
The obtained primary frequency modulation response time: T=T1-T0.
2. a kind of determination method of generating set primary frequency regulation response time as described in claim 1, it is characterised in that DCS control
The rotational speed difference being arranged in system is between ± 4 r/min~± 11r/min.
3. a kind of determination method of generating set primary frequency regulation response time as described in claim 1, it is characterised in that DCS control
The rotational speed difference being arranged in system is ± 4 r/min.
4. a kind of determination method of generating set primary frequency regulation response time as described in claim 1, it is characterised in that DCS control
The rotational speed difference being arranged in system is ± 11 r/min.
5. a kind of determination method of generating set primary frequency regulation response time as described in claim 1, it is characterised in that DCS control
The rotational speed difference being arranged in system is ± 6r/min.
6. utilizing a kind of a kind of generating set of the determination method of generating set primary frequency regulation response time as described in claim 1
The determination system of primary frequency modulation response time, it is characterised in that: including DCS control system, the DCS control system includes sequentially
It the primary frequency modulation control unit (1) of connection, data acquisition unit (2), data storage cell (3), data analysis unit (4) and holds
Row unit (1).
7. a kind of determination system of generating set primary frequency regulation response time as claimed in claim 6, it is characterised in that: the number
According in analytical unit (4) be equipped with comparator interconnected and trigger.
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| CN106646237B (en) * | 2017-02-22 | 2023-12-29 | 广州致远电子股份有限公司 | Transient response test method and device for CAN bus servo motor |
| CN110187270A (en) * | 2019-04-25 | 2019-08-30 | 河南茵格自动化设备有限公司 | Active primary frequency modulation Online Transaction Processing and method based on WAMS |
| CN111398726B (en) * | 2020-04-30 | 2021-12-28 | 南方电网电力科技股份有限公司 | Method, system and equipment for testing charging and discharging response time of energy storage frequency modulation system |
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