CN106681173A - GTNET (giga-transceiver network communication) interface card and source network joint real-time simulation system - Google Patents
GTNET (giga-transceiver network communication) interface card and source network joint real-time simulation system Download PDFInfo
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Abstract
The invention provides a GTNET (giga-transceiver network communication) interface card and source network joint real-time simulation system, wherein a GTNET interface card comprises a data protocol converter, the data protocol converter is used for converting the format of data output by a network side RTDS (real-time digital simulator) system into one supported by an EMS (energy management system) and an AGC (automatic generation control) scheduling system. By using the system, the problem that data communication cannot be carried directly between the RTDS and EMS is solved, and an output interface of the RTDS is compatible with an input interface of the EMS.
Description
Technical Field
The invention relates to the technical field of real-time simulation between a regional power grid and various power supplies in an electric power system, in particular to a source-grid combined real-time simulation system.
Background
The related technology provides a source-grid combined real-time simulation system which is used for simulating faults of various power grids and various generator sets and the theoretical research of new energy characteristics and an analysis control method of a power system. The source network combined real-time simulation system respectively realizes simulation of a source side and a network side, and simulates a control center through a power grid Energy Management System (EMS) and an Automatic Generation Control (AGC) dispatching system. The network side RTDS system for realizing the network side simulation is connected with the EMS.
In the research process, it is found that, among the four protocols currently integrated on the GTNET interface card for connecting the network side RTDS system and the EMS, only the distributed network protocol (DNP3.0) is the only protocol available for remote communication, and theoretically, the EMS side is configured with the same type of protocol, but different manufacturers understand the protocols differently, so that the DNP3.0 protocols of the terminals on the two sides cannot be compatible at present. Therefore, data communication cannot be directly performed between the RTDS simulation system and the EMS.
Disclosure of Invention
The invention provides a combined real-time simulation system of a GTNET interface card and a source network, which at least solves the problem that data communication cannot be directly carried out between an RTDS simulation system and an EMS.
According to an aspect of the present invention, there is provided a network communication (GTNET) interface card, comprising: and the data protocol converter is used for converting the data format of the data output by the network side RTDS system into the data format supported by the EMS and the AGC scheduling system.
Optionally, the data protocol converter includes, connected in sequence: the device comprises a first data packing module, a first protocol interface function module, a data packet identification and extraction module, a second protocol interface function module and a second data packing module.
Optionally, the data protocol converter further includes: the system comprises a first data caching module and a second data caching module; wherein,
the first data cache module is respectively connected with the first data packaging module and the first protocol interface function module; the second data caching module is respectively connected with the second data packaging module and the second protocol interface function module.
According to another aspect of the present invention, there is provided a source-network-united real-time simulation system, including: a source side simulator cluster, a coordination server, a network side real-time digital simulator RTDS system, a power grid energy management system EMS and an automatic generation control AGC dispatching system, wherein,
each source side simulation machine in the source side simulation machine cluster is respectively connected with the coordination server; the coordination server is connected with the network side RTDS system; the network side RTDS system is respectively connected with the EMS and the AGC dispatching system through a GTNET interface card; the EMS and the AGC dispatching system establish communication connection;
the GTNET interface card comprises a data protocol converter, and the data protocol converter is used for converting the data format of the data output by the network side RTDS system into the data format supported by the EMS and the AGC scheduling system.
Optionally, the wind turbine simulator includes: the device comprises a wind model module, a wind machine model module, a transmission chain model module, a generator model module and a converter model module.
Optionally, the thermal power generating unit simulator includes: a unit dynamic model module and a coordination control system, wherein,
the unit dynamic model module comprises: the system comprises a boiler dynamic unit, a steam turbine dynamic unit and a generator dynamic unit;
the coordinated control system includes: the system comprises a boiler main control module, a steam turbine digital electro-hydraulic control DEH module and a frequency difference correction module.
Optionally, the hydroelectric generating set simulator includes: the device comprises an AGC module, an electronic regulator module, an actuating mechanism module, a water diversion and drainage module, a hydraulic generator set module and a measurement module.
Optionally, the nuclear power generating set simulator includes: the system comprises a neutron dynamic model module, a reactor core fuel and coolant temperature model module, a primary coolant pipeline model module, a steam generator model module, a coolant pump model module, a reactor power control system model module, a steam turbine model module and a steam turbine speed regulator model module.
Optionally, the photovoltaic power generation unit simulator includes: the device comprises a photovoltaic battery pack model module, a direct current-direct current DC-DC module, a direct current-alternating current DC-AC module, a filtering boosting module, an inverter control module and a maximum power tracking MPPT module.
Optionally, the network side RTDS system is connected to the coordination server through a GTFPGA interface card.
By adopting the GTNET interface card comprising the data protocol converter, the data protocol converter is used for converting the data format of the data output by the RTDS system at the network side into the data format supported by the EMS and the AGC dispatching system, thereby solving the problem that the RTDS simulation system and the EMS can not directly carry out data communication and realizing the compatibility of the output interface of the RTDS simulation system and the EMS input interface.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a block diagram of a source net federated real-time simulation system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a thermal power generating unit simulator according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a configuration of a hydroelectric generating set simulator in accordance with an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a nuclear power generating unit simulator according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a photovoltaic generator set simulator according to an embodiment of the invention;
FIG. 6 is a block diagram of a data protocol converter according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an alternative structure of a data protocol converter according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
In the embodiment, a source-network-united real-time simulation system is provided. Fig. 1 is a block diagram of a source network combined real-time simulation system according to an embodiment of the present invention, and as shown in fig. 1, the system includes: a source side simulator cluster 1, a coordination server 2, a network side real-time digital simulator RTDS system 3, a power grid energy management system EMS 4 and an automatic generation control AGC dispatching system 5, wherein,
each source side simulation machine in the source side simulation machine cluster 1 is respectively connected with the coordination server 2; the coordination server 2 is connected with the network side RTDS system 3; the network side RTDS system 3 is respectively connected with the EMS 4 and the AGC scheduling system 5; the EMS 4 establishes communication connection with the AGC dispatching system 5.
The RTDS provides various data interfaces for data exchange with peripheral devices. Because the conventional digital-to-analog conversion interface usually has insufficient channels and different accuracies, in order to realize the system-level closed loop between the RTDS and the EMS based on the Ethernet, the data input and output at the RTDS system side are realized by the RTDS/GTNET card.
The network side RTDS system 3 is connected to the EMS 4 and the AGC scheduling system 5 through a GTNET interface card 6. The GTNET interface card 6 includes: and the data protocol converter is used for converting the data format of the data output by the network side RTDS system 3 into the data format supported by the EMS 4 and the AGC scheduling system 5.
The system can simulate the dynamic characteristics of an actual unit by using thermal power, wind power, pumped storage and other source side simulators of the source side simulator cluster 1, the network side RTDS system 3 provides a modeling and simulation platform of an actual power grid, and the EMS 4 and the automatic generation control AGC dispatching system 5 can simulate a multistage dispatching center. The system can realize panoramic joint simulation among the source, the network and the multistage dispatching center, and provides conditions for the research of a new power grid dispatching mechanism after large-scale new energy is connected to the network.
The RTDS system has high parallel computing capability, expandability and various data interfaces, so that the RTDS system has a prospect in the aspects of large power grid operation analysis, closed-loop test experiments and the like, but due to factors such as model difference, scale limitation and the like, an RTDS simulation model is generally an equivalent system which is simplified aiming at an actual system according to a certain rule. Therefore, the existing RTDS hardware resources can be combined, firstly, on the premise of considering the dynamic characteristic of the reserved power grid, the reserved area and the grid structure of the power grid are determined, the equivalence of the grid part is carried out, and the external grid part is accessed in the form of an infinite power supply. And then modeling simulation of an actual power grid equivalent system is carried out on an RTDS simulation platform, and the network side RTDS system 3 is established by modifying parameters, selecting elements and the like, so that the simulation output of the RTDS is ensured to be consistent with the actual power grid.
The EMS 4 and the AGC scheduling system 5 serve as an analog control center in this embodiment, and receive real-time simulation data from the network-side RTDS system 3. In order to realize receiving and storing of RTDS simulation data by the substation, a network model of an actual power grid equivalent system can be built on the EMS 4, the network model comprises building of a network structure, inputting of equipment element parameters, setting of plant station data channel parameters and the like, and adjustment and verification of a subsequent EMS calculation model are executed, so that guarantee is provided for a dispatcher to make a correct decision by combining with high-level application software.
Optionally, the source-side simulator cluster 1 includes, but is not limited to, at least one of: the simulation system comprises one or more wind turbine generator system simulation machines, one or more thermal power generator system simulation machines, one or more hydroelectric generating set simulation machines, one or more nuclear power generator system simulation machines and one or more photovoltaic generating set simulation machines.
Optionally, the wind turbine simulator includes: the device comprises a wind model module, a wind machine model module, a transmission chain model module, a generator model module and a converter model module.
For example, the wind turbine generator simulation adopts a distributed simulation machine group design. The core object in the wind power plant is a wind turbine generator, and the wind turbine generator is divided into the following models according to different functions: the system comprises a wind model, a wind turbine model, a transmission chain model, a generator model and a converter module; in addition to the main module, there may be various auxiliary modules.
The wind turbine generator takes wind as motive power, and the wind speed directly determines the dynamic characteristics of the wind turbine generator. In the simulation system, in order to accurately describe the characteristics of randomness and intermittence of wind energy, the simulation system is simulated by four components: basic wind, gust wind, gradual wind and random wind. Interface data can also be read from wind power plant SIS data, so that the wind power simulator can simulate actual wind power change.
Fig. 2 is a schematic structural diagram of a thermal power generating unit simulator according to an embodiment of the present invention, and as shown in fig. 2, optionally, the thermal power generating unit simulator includes: the unit dynamic model module and coordinated control system, wherein, the unit dynamic model module includes: the system comprises a boiler dynamic unit, a steam turbine dynamic unit and a generator dynamic unit; the coordination control system includes: the system comprises a boiler main control module, a steam turbine digital electro-hydraulic control DEH module and a frequency difference correction module.
A thermal power generating unit simulation model established on a thermal power generating unit simulation machine is based on a simplified nonlinear control model, and the simulation of the main dynamic characteristics and the control scheme of the thermal power generating unit is realized. Compared with a simple speed regulator module, the thermal power generating unit simulation model provided by the embodiment increases the dynamic characteristics of the thermal power generating unit and the thermal power generating unit, and can reflect the regulation characteristics of the thermal power generating unit more truly. The simulation model can realize the simulation of the normal operation of the unit, the quick load shedding and other working conditions.
Fig. 3 is a schematic structural diagram of a hydroelectric generating set simulator according to an embodiment of the present invention, and as shown in fig. 3, optionally, the hydroelectric generating set simulator includes: the device comprises an AGC module, an electronic regulator module, an actuating mechanism module, a water diversion and drainage module, a hydraulic generator set module and a measurement module. The electronic regulator receives the set frequency, power and the load given signal of AGC system and realizes the closed-loop regulation of frequency and power, and the executing mechanism converts the output of the electronic regulator into the stroke deviation of the main servomotor according to certain characteristics, so as to control the set power and rotation speed.
Fig. 4 is a schematic structural diagram of a nuclear power plant simulator according to an embodiment of the present invention, and as shown in fig. 4, optionally, the nuclear power plant simulator includes: the system comprises a neutron dynamic model module, a reactor core fuel and coolant temperature model module, a primary loop average temperature model module, a steam generator model module, a hot wire temperature model module, a cold wire temperature model module, a reactor power control system model module, a steam turbine model module and a steam turbine speed regulator model module.
Fig. 5 is a schematic structural diagram of a photovoltaic generator set simulator according to an embodiment of the present invention, and as shown in fig. 5, optionally, the photovoltaic generator set simulator includes: the device comprises a photovoltaic battery pack model module, a direct current-direct current DC-DC module, a direct current-alternating current DC-AC module, a filtering boosting module, an inverter control module and a maximum power tracking MPPT module. The input of the photovoltaic generator set is the illumination intensity and the temperature, the input can be manually set, and the actual data of a photovoltaic power plant can also be used as the input, so that the photovoltaic simulator can simulate the power output change under the actual illumination and temperature conditions.
A photovoltaic generator set simulation model relates to the problem of variable step length. The power electronic element is a small step length element (step length is 2 mu s), the solar cell model and the three-phase alternating current power supply belong to large step length elements (step length is 50 mu s), and step length conversion is needed in connection.
Optionally, the network-side RTDS system is connected to the coordination server through a GTFPGA interface card.
Example 2
In the present embodiment, a GTNET interface card 6 is provided. The GTNET interface card 6 includes: and the data protocol converter is used for converting the data format of the data output by the network side RTDS system into the data format supported by the EMS and the AGC scheduling system.
Fig. 6 is a schematic structural diagram of a data protocol converter according to an embodiment of the present invention, and as shown in fig. 6, the data protocol converter includes, connected in sequence: the device comprises a first data packing module, a first protocol interface function module, a data packet identification and extraction module, a second protocol interface function module and a second data packing module.
Fig. 7 is a schematic diagram of an alternative structure of the data protocol converter according to the embodiment of the present invention, as shown in fig. 7, optionally, the data protocol converter further includes: the system comprises a first data caching module and a second data caching module; the first data cache module is respectively connected with the first data packaging module and the first protocol interface function module; and the second data cache module is respectively connected with the second data packaging module and the second protocol interface function module.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A GTNET interface card, comprising: and the data protocol converter is used for converting the data format of the data output by the network side RTDS system into the data format supported by the EMS and the AGC scheduling system.
2. The GTNET interface card of claim 1, wherein the data protocol translator comprises, connected in sequence: the device comprises a first data packing module, a first protocol interface function module, a data packet identification and extraction module, a second protocol interface function module and a second data packing module.
3. The GTNET interface card of claim 1, wherein the data protocol translator further comprises: the system comprises a first data caching module and a second data caching module; wherein,
the first data cache module is respectively connected with the first data packaging module and the first protocol interface function module; the second data caching module is respectively connected with the second data packaging module and the second protocol interface function module.
4. A source-network combined real-time simulation system, comprising: a source side simulator cluster, a coordination server, a network side real-time digital simulator RTDS system, a power grid energy management system EMS and an automatic generation control AGC dispatching system, wherein,
each source side simulation machine in the source side simulation machine cluster is respectively connected with the coordination server; the coordination server is connected with the network side RTDS system; the network side RTDS system is respectively connected with the EMS and the AGC dispatching system through a GTNET interface card; the EMS and the AGC dispatching system establish communication connection;
the GTNET interface card comprises a data protocol converter, and the data protocol converter is used for converting the data format of the data output by the network side RTDS system into the data format supported by the EMS and the AGC scheduling system.
5. The system of claim 4, wherein the wind turbine simulator comprises: the device comprises a wind model module, a wind machine model module, a transmission chain model module, a generator model module and a converter model module.
6. The system of claim 5, wherein the thermal power unit simulator comprises: a unit dynamic model module and a coordination control system, wherein,
the unit dynamic model module comprises: the system comprises a boiler dynamic unit, a steam turbine dynamic unit and a generator dynamic unit;
the coordinated control system includes: the system comprises a boiler main control module, a steam turbine digital electro-hydraulic control DEH module and a frequency difference correction module.
7. The system of claim 5, wherein the hydroelectric generating set simulator comprises: the device comprises an AGC module, an electronic regulator module, an actuating mechanism module, a water diversion and drainage module, a hydraulic generator set module and a measurement module.
8. The system of claim 5, wherein the nuclear power plant simulator comprises: the system comprises a neutron dynamic model module, a reactor core fuel and coolant temperature model module, a primary coolant pipeline model module, a steam generator model module, a coolant pump model module, a reactor power control system model module, a steam turbine model module and a steam turbine speed regulator model module.
9. The system of claim 5, wherein the photovoltaic generator set simulator comprises: the device comprises a photovoltaic battery pack model module, a direct current-direct current DC-DC module, a direct current-alternating current DC-AC module, a filtering boosting module, an inverter control module and a maximum power tracking MPPT module.
10. The system of claim 4, wherein the network-side RTDS system is connected to the coordination server via a GTFPGA interface card.
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