GB/T 36270-2018Technical specification for monitoring and control system of microgrids (English PDF)

5.1 Power Supply

5.1.1 Energy management system for microgrids (voltage level. 10 kV and above) shall adopt dual power-supply; energy management system for microgrids (voltage level. 380 V) shall adopt single power-supply.

5.1.2 Microgrid monitoring and control system shall be equipped with uninterrupted power supply (UPS) that can maintain normal system operation for >= 2 h.

5.2 Computer Room

5.2.1 Microgrid monitoring and control system shall be installed through group screens and deployed in the control room and computer room in accordance with its functional division.

5.2.2 The structure of various screens and the layout of screens under microgrid monitoring and control system shall comply with stipulations in DL/T 5136.

5.2.3 The computer room shall be equipped with waterproofing, fireproofing and accident lighting facilities; its setting shall comply with stipulations in GB/T 2887.

5.2.4 Isolation and lightning protection measures adopted in the computer room shall comply with stipulations in GB/T 2887.

5.2.5 Grounding design of the computer room shall comply with stipulations in GB 50174.

5.3 Field and Environment

5.3.1 Maximum relative humidity

a) Daily average value. 95%.

b) Monthly average value. 90%.

5.3.2 Working environment and temperature

a) Outdoor. -25 °C ~ 55 °C.

b) Indoor. -5 °C ~ 45 °C.

7.2 Database Management

7.2.1 Microgrid monitoring and control system shall be equipped with the function of database maintenance, synchronization, back-up and recovery, etc.

7.2.2 Microgrid monitoring and control system shall provide unified real-time or quasi-real-time data interfaces to external sources; implement access control in accordance with the limit of authority and classification.

7.3 Human-computer Interface

7.3.1 Microgrid monitoring and control system can include, but shall not be limited to.

a) Real-time monitoring frame shall support system main wiring diagram, network diagram, geographical diagram, operating-condition diagram and communication network diagram, etc. The mode of diagram demonstration includes tendency chart, histogram and pie chart, etc.

b) It shall support multi-screen display, graphical multi-window, step-less zoom, roaming, hauling and hierarchical display, etc.

7.3.2 Microgrid monitoring and control system shall be equipped with graphical modeling tool that can facilitate graphic library integration; network topology management tool. It shall also support customized equipment primitive and interval

7.8 Authority Management

7.8.1 In users' authority management under microgrid monitoring and control system, personnel shall be provided with different authorities and validity periods in accordance with different job duties and natures, including hierarchical authority management, authority binding and configuration.

7.8.2 In microgrid monitoring and control system, hierarchical management shall be implemented in users' authority. Password setting and authority allocation can be executed; password limitation can be executed in accordance with the content of business.

7.8.3 All the operators logging in microgrid monitoring and control system shall be authorized; identity and authority authentication shall be executed. Stipulated system functions and scope of operation shall be adopted in accordance with the limit of authority.

7.9 Microgrid Operating Mode Control

7.9.1 Microgrid monitoring and control system shall be equipped with the function of microgrid-connect/grid-disconnected switching; the function of issuing mode switching instructions to certain devices, such as distributed power and grid-connected interface device, etc.

7.9.2 In normal grid-connect/grid-disconnected switching, microgrid monitoring and control system shall provide two optional modes. power-off switching and smooth switching.

7.9.3 In case of malfunction of the microgrid, microgrid monitoring and control system shall automatically switch from grid-connected operating control mode to grid-disconnected mode.

7.9.4 When microgrid switches from grid-disconnected operation to grid-connected operation after the malfunction recovers, microgrid monitoring and control system shall

8.3 System Timeliness

The requirements of system timeliness include.

a) The delay time from telemetry dead zone to the display in operating workstation is. <= 2 s.

b) The delay time from remote signal displacement to the display in operating station is. <= 2 s.

c) The duration of controlling and adjusting command transmission (from pushing the execution button to output). <= 1 s.

d) Response time of whole-frame dispatching.

1) Real-time frame. <= 2 s.

2) Other frames. <= 3 s.

e) Real-time data refresh cycle. <= 3 s.

f) Sequence of event (SOE). <= 2 ms.

8.4 System Resources

8.4.1 The requirements of CPU average load rate of various workstations include.

a) Under normal condition (within any 30 min). <= 30%.

b) During microgrid failures (within 10 s). <= 70%.

8.4.2 The requirements of network load rate include.

a) Under normal condition (within any 30 min). <= 20%.

b) During microgrid failures (within 10 s). <= 40%.

8.4.3 The requirements of capacity include.

a) Analog quantity. >= 8,000 points.

b) Status quantity. >= 10,000 points.

c) Remote control. >= 500 points. […]