Signal measurement method for energy storage and frequency modulation system

A signal measurement method for energy storage and frequency modulation system, comprising following steps:

• step 1:
• receiving an AGC (Automatic Generation Control) frequency regulation instruction(s) from a balancing authority of a RTU (Remote Terminal Unit) with an energy management system under IEC 104 protocol;
• step 2:
• sending by the energy management system the AGC frequency regulation instruction(s) to a DCS (Distributed Control System) system and an energy storage PCS (Power Conditioning System) of (a) power generator unit(s);
• step 3:
• collecting voltage data signals and current data signals by (an) IO acquisition device(s) with the energy management system;
• step 4:
• multiplying the voltage data signals and the current data signals to get output signals of the power generator unit(s);
• step 5:
• collecting data signals at a direct current side of an energy storage system by the IO acquisition device(s) with the energy management system;
• step 6:
• collecting data signals at an alternating current side of the energy storage system by the IO acquisition device(s) with the energy management system;
• step 7:
• multiplying voltage data signals and current data signals to get output signals of the energy storage system;
• step 8:
• adding the output signals of the power generator unit(s) and the output signals of the energy storage system to get total output signals;
• and
• step 9:
• uploading the total output signals with the RTU to the balancing authority of a power grid as a feedback of the AGC frequency regulation instruction(s) with the energy management system;
• and
• wherein, a model of the IO acquisition device(s) is ADAM-6050-00;
• wherein the energy management system comprises (a) microgrid controller(s), an energy management server, a working station and network devices;
• communication is established between the microgrid controller(s) and the energy management server and the energy management server collects convergence ports on the microgrid controller(s) that report data, the microgrid controller(s) is/are connected with the working station by means of (a) local area network switch(es), and the microgrid controller(s), the energy management server and the working station communicate by (a) network device(s);
• wherein, the microgrid controller(s) is/are core secondary equipment integrating protection, safety and stability control, economic running control, electric quality monitoring and cloud interactive;
• as for protection, the microgrid controller(s) provide(s) a variety of alternating current and direct current protection functions including AC side of four quadrant power convertor protection, direct current bus protection, and direct current line protection;
• as for safety and stability control, the microgrid controller(s) is/are provided with a variety of safety and stability control functions such as grid-connected/islanded seamless transition, underfrequency and undervoltage load shedding, and high frequency and high voltage separation;
• as for economic running control, the microgrid controller(s) can utilize a variety of new energy economic running strategies such as load shifting, which can be combined with time of use pricing to realize optimal output of distributed energy, and improve general running economic efficiency;
• as for electric quality monitoring, the microgrid controller(s) can monitor online, record and transmits information of a plurality of energy quality indicators;
• and as for cloud interactive, the microgrid controller(s) support(s) plug and play described in (an) IEC61850 model(s), support(s) corresponding protocols of standard IEC60870-5;
• the energy management server communicates with the microgrid controller(s), collects the convergence ports of the microgrid controller(s) that report data, and receives at the same time connection and data processing of a plurality of microgrid controllers;
• a Web program publishing server is a server that deploys and publishes pages of an energy management and monitoring system, a client side computer requests a page program of the Web program publishing server by http and monitors in real time a system status with a Web client browser, the energy management server and the Web program publishing server can be the same server, a data center server is a server that promises subsequent system stability, and guarantees system reliability, when there are a large number of equipment and a lot of data processing tasks, the data center server is used for load balancing, to monitor all active equipment servers, when it is necessary to establish communication in case of centralized control demand, first of all apply to the data center server to obtain (an) equipment service end(s);
• secondly the data center server returns corresponding information of (a) current service end(s) according to the centralized control demand;
• and finally the centralized control establishes communication with the service end(s), and in the meantime, the data center server updates a status of the service end(s) (connected or interrupted) by heartbeat messages, and a usage rate of CPU and internal storage;
• main computers of the working station are to monitor system software running, loading by a browser and running a Web client side program for system monitoring;
• and
• the network devices are used for internal communication in the energy management system with one or more networks, data are transmitted by one or more internal networks, each port of the switch(es) is connected to an independent network segment, and one or more important network computers are directly connected to one or more ports of the switch(es).